WO2011059041A1 - 炭化ケイ素粉末組成物及びそれを用いる炭化ケイ素成形体の製造方法 - Google Patents
炭化ケイ素粉末組成物及びそれを用いる炭化ケイ素成形体の製造方法 Download PDFInfo
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- WO2011059041A1 WO2011059041A1 PCT/JP2010/070145 JP2010070145W WO2011059041A1 WO 2011059041 A1 WO2011059041 A1 WO 2011059041A1 JP 2010070145 W JP2010070145 W JP 2010070145W WO 2011059041 A1 WO2011059041 A1 WO 2011059041A1
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- Prior art keywords
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- silicon carbide
- composition
- curable silicone
- component
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- 239000000203 mixture Substances 0.000 title claims abstract description 165
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 150
- 230000001590 oxidative effect Effects 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- -1 methacryloyl group Chemical group 0.000 claims description 82
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 43
- 125000003342 alkenyl group Chemical group 0.000 claims description 42
- 229910052710 silicon Inorganic materials 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 22
- 150000001451 organic peroxides Chemical class 0.000 claims description 17
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 14
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims description 9
- 238000005238 degreasing Methods 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 8
- 238000006482 condensation reaction Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910000077 silane Inorganic materials 0.000 claims description 8
- 125000003700 epoxy group Chemical group 0.000 claims description 7
- 239000007809 chemical reaction catalyst Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 125000005372 silanol group Chemical group 0.000 claims description 6
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 5
- 239000004651 Radiation Curable Silicone Substances 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 238000001723 curing Methods 0.000 description 27
- 229920001577 copolymer Polymers 0.000 description 25
- 239000000047 product Substances 0.000 description 24
- 150000002430 hydrocarbons Chemical group 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 13
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 239000012535 impurity Substances 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000005470 impregnation Methods 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910004283 SiO 4 Inorganic materials 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 7
- 239000007983 Tris buffer Substances 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 6
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
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- 229910052760 oxygen Inorganic materials 0.000 description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- NTPLXRHDUXRPNE-UHFFFAOYSA-N 4-methoxyacetophenone Chemical compound COC1=CC=C(C(C)=O)C=C1 NTPLXRHDUXRPNE-UHFFFAOYSA-N 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- NYMPGSQKHIOWIO-UHFFFAOYSA-N hydroxy(diphenyl)silicon Chemical class C=1C=CC=CC=1[Si](O)C1=CC=CC=C1 NYMPGSQKHIOWIO-UHFFFAOYSA-N 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
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- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 3
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
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- 230000002411 adverse Effects 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 238000006459 hydrosilylation reaction Methods 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 125000003944 tolyl group Chemical group 0.000 description 3
- WXPWZZHELZEVPO-UHFFFAOYSA-N (4-methylphenyl)-phenylmethanone Chemical compound C1=CC(C)=CC=C1C(=O)C1=CC=CC=C1 WXPWZZHELZEVPO-UHFFFAOYSA-N 0.000 description 2
- KWEKXPWNFQBJAY-UHFFFAOYSA-N (dimethyl-$l^{3}-silanyl)oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)C KWEKXPWNFQBJAY-UHFFFAOYSA-N 0.000 description 2
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 2
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- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 description 2
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- GNKZMNRKLCTJAY-UHFFFAOYSA-N 4'-Methylacetophenone Chemical compound CC(=O)C1=CC=C(C)C=C1 GNKZMNRKLCTJAY-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
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- 125000002344 aminooxy group Chemical group [H]N([H])O[*] 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
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- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 2
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- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
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- VMFJVWPCRCAWBS-UHFFFAOYSA-N (3-methoxyphenyl)-phenylmethanone Chemical compound COC1=CC=CC(C(=O)C=2C=CC=CC=2)=C1 VMFJVWPCRCAWBS-UHFFFAOYSA-N 0.000 description 1
- AGKBXKFWMQLFGZ-UHFFFAOYSA-N (4-methylbenzoyl) 4-methylbenzenecarboperoxoate Chemical compound C1=CC(C)=CC=C1C(=O)OOC(=O)C1=CC=C(C)C=C1 AGKBXKFWMQLFGZ-UHFFFAOYSA-N 0.000 description 1
- OVSGBKZKXUMMHS-VGKOASNMSA-L (z)-4-oxopent-2-en-2-olate;propan-2-olate;titanium(4+) Chemical compound [Ti+4].CC(C)[O-].CC(C)[O-].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O OVSGBKZKXUMMHS-VGKOASNMSA-L 0.000 description 1
- QMTFKWDCWOTPGJ-KVVVOXFISA-N (z)-octadec-9-enoic acid;tin Chemical compound [Sn].CCCCCCCC\C=C/CCCCCCCC(O)=O QMTFKWDCWOTPGJ-KVVVOXFISA-N 0.000 description 1
- JYAQYXOVOHJRCS-UHFFFAOYSA-N 1-(3-bromophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(Br)=C1 JYAQYXOVOHJRCS-UHFFFAOYSA-N 0.000 description 1
- SKBBQSLSGRSQAJ-UHFFFAOYSA-N 1-(4-acetylphenyl)ethanone Chemical compound CC(=O)C1=CC=C(C(C)=O)C=C1 SKBBQSLSGRSQAJ-UHFFFAOYSA-N 0.000 description 1
- HDMHXSCNTJQYOS-UHFFFAOYSA-N 1-(4-prop-2-enylphenyl)ethanone Chemical compound CC(=O)C1=CC=C(CC=C)C=C1 HDMHXSCNTJQYOS-UHFFFAOYSA-N 0.000 description 1
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
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- DZZAHLOABNWIFA-UHFFFAOYSA-N 2-butoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCCCC)C(=O)C1=CC=CC=C1 DZZAHLOABNWIFA-UHFFFAOYSA-N 0.000 description 1
- ZCDADJXRUCOCJE-UHFFFAOYSA-N 2-chlorothioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(Cl)=CC=C3SC2=C1 ZCDADJXRUCOCJE-UHFFFAOYSA-N 0.000 description 1
- KLAMVBJBHNQYSB-UHFFFAOYSA-N 2-ethyl-1-phenylbutan-1-one Chemical compound CCC(CC)C(=O)C1=CC=CC=C1 KLAMVBJBHNQYSB-UHFFFAOYSA-N 0.000 description 1
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- KMSYDDGPKBBSNA-UHFFFAOYSA-N 3-ethyl-1-phenylpentan-1-one Chemical compound CCC(CC)CC(=O)C1=CC=CC=C1 KMSYDDGPKBBSNA-UHFFFAOYSA-N 0.000 description 1
- UGVRJVHOJNYEHR-UHFFFAOYSA-N 4-chlorobenzophenone Chemical compound C1=CC(Cl)=CC=C1C(=O)C1=CC=CC=C1 UGVRJVHOJNYEHR-UHFFFAOYSA-N 0.000 description 1
- DLGLWFGFEQRRCP-UHFFFAOYSA-N 6-chloro-1-nonylxanthen-9-one Chemical compound O1C2=CC(Cl)=CC=C2C(=O)C2=C1C=CC=C2CCCCCCCCC DLGLWFGFEQRRCP-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
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- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical group CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 description 1
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- 235000021355 Stearic acid Nutrition 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- GSCOPSVHEGTJRH-UHFFFAOYSA-J [Ti+4].CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O Chemical compound [Ti+4].CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O GSCOPSVHEGTJRH-UHFFFAOYSA-J 0.000 description 1
- NOZAQBYNLKNDRT-UHFFFAOYSA-N [diacetyloxy(ethenyl)silyl] acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)C=C NOZAQBYNLKNDRT-UHFFFAOYSA-N 0.000 description 1
- GPDWNEFHGANACG-UHFFFAOYSA-L [dibutyl(2-ethylhexanoyloxy)stannyl] 2-ethylhexanoate Chemical compound CCCCC(CC)C(=O)O[Sn](CCCC)(CCCC)OC(=O)C(CC)CCCC GPDWNEFHGANACG-UHFFFAOYSA-L 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- NBJODVYWAQLZOC-UHFFFAOYSA-L [dibutyl(octanoyloxy)stannyl] octanoate Chemical compound CCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCC NBJODVYWAQLZOC-UHFFFAOYSA-L 0.000 description 1
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical group CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 description 1
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000005083 alkoxyalkoxy group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- 125000001231 benzoyloxy group Chemical group C(C1=CC=CC=C1)(=O)O* 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- WBQJELWEUDLTHA-UHFFFAOYSA-M benzyl(triethyl)azanium;acetate Chemical compound CC([O-])=O.CC[N+](CC)(CC)CC1=CC=CC=C1 WBQJELWEUDLTHA-UHFFFAOYSA-M 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- RFVHVYKVRGKLNK-UHFFFAOYSA-N bis(4-methoxyphenyl)methanone Chemical compound C1=CC(OC)=CC=C1C(=O)C1=CC=C(OC)C=C1 RFVHVYKVRGKLNK-UHFFFAOYSA-N 0.000 description 1
- QULQXPOEZHJMQE-UHFFFAOYSA-N bis(6-chloro-1-hydroxycyclohexa-2,4-dien-1-yl)methanone Chemical compound C1=CC=CC(Cl)C1(O)C(=O)C1(O)C=CC=CC1Cl QULQXPOEZHJMQE-UHFFFAOYSA-N 0.000 description 1
- IOMSYMSQXIKSQG-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] 2-pentylpropanediperoxoate Chemical compound CC(C)(C)OOOC(=O)C(CCCCC)C(=O)OOOC(C)(C)C IOMSYMSQXIKSQG-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- HSVPRYWNEODRGU-UHFFFAOYSA-J butanoate;zirconium(4+) Chemical compound [Zr+4].CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O HSVPRYWNEODRGU-UHFFFAOYSA-J 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000006309 butyl amino group Chemical group 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000010538 cationic polymerization reaction Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- VEVVRTWXUIWDAW-UHFFFAOYSA-N dodecan-1-amine;phosphoric acid Chemical compound OP(O)(O)=O.CCCCCCCCCCCCN VEVVRTWXUIWDAW-UHFFFAOYSA-N 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 229940093858 ethyl acetoacetate Drugs 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 1
- VMESOKCXSYNAKD-UHFFFAOYSA-N n,n-dimethylhydroxylamine Chemical compound CN(C)O VMESOKCXSYNAKD-UHFFFAOYSA-N 0.000 description 1
- WHIVNJATOVLWBW-UHFFFAOYSA-N n-butan-2-ylidenehydroxylamine Chemical group CCC(C)=NO WHIVNJATOVLWBW-UHFFFAOYSA-N 0.000 description 1
- NCCHARWOCKOHIH-UHFFFAOYSA-N n-methylbenzamide Chemical group CNC(=O)C1=CC=CC=C1 NCCHARWOCKOHIH-UHFFFAOYSA-N 0.000 description 1
- NAQQTJZRCYNBRX-UHFFFAOYSA-N n-pentan-3-ylidenehydroxylamine Chemical group CCC(CC)=NO NAQQTJZRCYNBRX-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 125000005386 organosiloxy group Chemical group 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 150000003058 platinum compounds Chemical class 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- KRIOVPPHQSLHCZ-UHFFFAOYSA-N propiophenone Chemical compound CCC(=O)C1=CC=CC=C1 KRIOVPPHQSLHCZ-UHFFFAOYSA-N 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- LSZKGNJKKQYFLR-UHFFFAOYSA-J tri(butanoyloxy)stannyl butanoate Chemical compound [Sn+4].CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O LSZKGNJKKQYFLR-UHFFFAOYSA-J 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6269—Curing of mixtures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
- C01B32/977—Preparation from organic compounds containing silicon
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/571—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained from Si-containing polymer precursors or organosilicon monomers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/604—Pressing at temperatures other than sintering temperatures
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/723—Oxygen content
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/94—Products characterised by their shape
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- C—CHEMISTRY; METALLURGY
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/95—Products characterised by their size, e.g. microceramics
Definitions
- the present invention relates to a silicon carbide powder composition and a method for producing a silicon carbide molded body using the same.
- Silicon carbide ceramics are chemically stable at room temperature and high temperature, and have excellent mechanical strength at high temperature, and therefore are used as high temperature materials.
- Patent Document 1 a method for producing a silicon carbide molded body
- Patent Document 2 a method using a sintering aid such as boron
- Patent Document 2 a method of bringing molten silicon into contact with a molded body mainly composed of silicon carbide and carbon
- Patent Document 2 A method (Patent Document 2) is known in which SiO gas permeates through a molded body mainly composed of silicon carbide and carbon.
- the method using a sintering aid such as boron contaminates the silicon carbide sintered body obtained by an impurity element such as boron due to the sintering aid used, which is difficult to use in the field of semiconductor device manufacturing. is there.
- the method of bringing molten silicon into contact and the method of allowing the molded body to pass SiO 2 gas require an additional step to further process the obtained molded body, and a special apparatus for that is also required.
- the object of the present invention is to solve the above-mentioned problems of the prior art and provide a composition suitable for easily producing a high-purity silicon carbide molded body and a method for producing a high-purity silicon carbide molded body using the composition. There is to do.
- the present invention first provides a silicon carbide powder composition comprising a silicon carbide powder obtained by thermally decomposing a silicone cured product in a non-oxidizing atmosphere and an organic binder.
- the present invention secondly, The silicon carbide powder composition is molded to obtain a silicon carbide powder molded body, Degreasing the silicon carbide powder compact, Next, the degreased silicon carbide powder compact is fired in a non-oxidizing atmosphere.
- a method for producing a silicon carbide molded body including a step.
- the present invention A silicon carbide molded article obtained by the above production method is provided.
- the silicon carbide powder composition of the present invention does not need to contain a sintering aid, it can be highly purified at the preparation stage of the composition, and a molded body comprising a high-purity silicon carbide sintered body can be easily formed. Can be manufactured.
- silicon carbide is usually difficult to sinter, only a sintered body having a simple shape can be produced.
- a silicon carbide molded body having a complicated shape can be easily formed. Can be manufactured.
- room temperature means ambient temperature and can usually vary within a range of 10 to 35 ° C.
- the silicon carbide powder composition of the present invention contains a specific silicon carbide powder and an organic binder as essential components.
- Silicon carbide powder The silicon carbide powder used in the present composition is a silicon carbide powder obtained by firing a silicone cured product.
- the silicone cured product is obtained by curing a curable silicone composition, and known curable silicone compositions can be used.
- the curing mechanism of the curable silicone composition is not particularly limited, and any curable silicone composition can be used.
- organic peroxide curable, radiation curable reactivity, addition curing reaction type, condensation curable silicone composition and the like can be mentioned.
- an organic peroxide-curable and radiation-curable reactive silicone composition is advantageous, and the total content of impurity elements in the obtained silicon carbide powder is 1 ppm or less. , Preferably 0.5 ppm or less, and more preferably 0.1 ppm or less.
- the impurity element include Fe, Cr, Ni, Al, Ti, Cu, Na, Zn, Ca, Zr, Mg, and B, and the total content thereof can be suppressed as described above.
- organic peroxide curable silicone composition examples include a linear chain having an alkenyl group such as a vinyl group at one or both of a molecular chain terminal part (one terminal or both terminal) and a molecular chain non-terminal part.
- a silicone composition that cures by radical polymerization of an organopolysiloxane in the presence of an organic peroxide can be given.
- Examples of the radiation curable silicone composition include an ultraviolet curable silicone composition and an electron beam curable silicone composition.
- the ultraviolet curable silicone composition examples include a silicone composition that is cured by ultraviolet energy having a wavelength of 200 to 400 nm.
- the curing mechanism is not particularly limited.
- Specific examples thereof include an acryl silicone-based silicone composition containing an organopolysiloxane having an acryloyl group or a methacryloyl group and a photopolymerization initiator, a mercapto group-containing organopolysiloxane and an organopolysiloxane having an alkenyl group such as a vinyl group.
- Mercapto-vinyl addition polymerization type silicone composition containing photopolymerization initiator, addition reaction type silicone composition using the same platinum group metal catalyst as thermosetting addition reaction type, organopolysiloxane containing epoxy group And a cationic polymerization type silicone composition containing an onium salt catalyst, and any of them can be used as an ultraviolet curable silicone composition.
- any silicone composition that is cured by radical polymerization initiated by irradiating an electron beam to an organopolysiloxane having a radical polymerizable group can be used.
- the addition-curable silicone composition is cured by a reaction (hydrosilylation addition reaction) in the presence of the above-described linear organopolysiloxane having an alkenyl group, an organohydrogenpolysiloxane, and a platinum group metal catalyst.
- the silicone composition to be mentioned can be mentioned.
- condensation curable silicone composition for example, a silanol-blocked organopolysiloxane at both ends and an organohydrogenpolysiloxane or a hydrolyzable silane such as tetraalkoxysilane or organotrialkoxysilane and / or a partially hydrolyzed condensate thereof are used.
- Silicone compositions that are cured by reaction in the presence of a condensation reaction catalyst such as an organotin catalyst, or both ends are trialkoxy groups, dialkoxyorgano groups, trialkoxysiloxyethyl groups, dialkoxyorganosiloxyethyl groups, etc. Examples thereof include a silicone composition that is cured by reacting the blocked organopolysiloxane in the presence of a condensation reaction such as an organotin catalyst.
- a radiation curable silicone composition and an organic peroxide curable silicone composition are desirable from the viewpoint of avoiding contamination of impurity elements as much as possible.
- Organic peroxide curable silicone composition As an organic peroxide curable silicone composition, specifically, for example, (A) an organopolysiloxane containing at least two alkenyl groups bonded to a silicon atom; and (b) an organic peroxide and, as an optional component, (c) at least two hydrogen atoms bonded to the silicon atom (ie, SiH groups). Organohydrogenpolysiloxane contained in an amount of 0.1 to 2 mol of hydrogen atoms bonded to silicon atoms in the component (c) per mol of alkenyl groups in the total curable silicone composition And organic peroxide-curable silicone compositions.
- the organopolysiloxane of a component is a base polymer of an organic peroxide curable silicone composition.
- the degree of polymerization of the organopolysiloxane of component (a) is not particularly limited, and as component (a), liquid organopolysiloxanes at 25 ° C. to raw rubber-like organopolysiloxane can be used, but the average degree of polymerization is preferred.
- An organopolysiloxane of about 50 to 20,000, more preferably about 100 to 10,000, and still more preferably about 100 to 2,000 is preferably used.
- the organopolysiloxane of component (a) is basically composed of repeating diorganosiloxane units (R 1 2 SiO 2/2 units) from the viewpoint of easy availability of raw materials, both molecular chain terminals are blocked with triorganosiloxy groups (R 1 3 SiO 1/2) or hydroxy diorganosiloxy group ((HO) R 1 2 SiO 1/2 units), linear structure having no branch, Alternatively, although the molecular chain has a cyclic structure having no branch, consisting of repeating diorganosiloxane units, it may partially contain a branched structure such as a trifunctional siloxane unit or SiO 2 unit.
- R 1 is as defined in formula (1) described below.
- R 1 for example, the following average composition formula (1): R 1 a SiO (4-a) / 2 (1)
- R 1 represents the same or different unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms, and 50 to 99 mol% of R 1 represents alkenyl.
- A is a positive number in the range of 1.5 to 2.8, more preferably 1.8 to 2.5, and even more preferably 1.95 to 2.05.
- Organopolysiloxanes having at least two alkenyl groups in the molecule are used.
- R 1 examples include alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, and hexyl; aryl groups such as phenyl, tolyl, xylyl, and naphthyl; cyclopentyl A cycloalkyl group such as a cyclohexyl group; an alkenyl group such as a vinyl group, an allyl group, a propenyl group, an isopropenyl group, and a butenyl group; a part or all of the hydrogen atoms of these hydrocarbon groups are halogens such as fluorine, bromine, and chlorine A group substituted with an atom, a cyano group or the like, for example, a chloromethyl group, a chloropropyl group, a bromoethyl group, a trifluoropropyl group, a cyanoethyl group, and the like can be mentioned. From the viewpoint of
- R 1 are alkenyl groups (particularly alkenyl groups having preferably 2 to 8, more preferably 2 to 6 carbon atoms).
- the content of the alkenyl group is in the total organic group bonded to the silicon atom (that is, in the unsubstituted or substituted all monovalent hydrocarbon group represented by R 1 in the average composition formula (1)), preferably 50. It is ⁇ 99 mol%, particularly preferably 75 to 95 mol%.
- the organopolysiloxane as the component (a) has a linear structure, this alkenyl group is bonded to a silicon atom only in one of the molecular chain terminal and the non-molecular chain terminal, and both of them are silicon. It may be bonded to an atom.
- component (b) component is an organic peroxide used as a catalyst for accelerating the crosslinking reaction of component (a) in the organic peroxide-curable organopolysiloxane composition.
- component (b) conventionally known organic peroxides can be used as long as the crosslinking reaction of the component (a) can be promoted.
- benzoyl peroxide 2,4-dichlorobenzoyl peroxide, p-methylbenzoyl peroxide, o-methylbenzoyl peroxide, 2,4-dicumyl peroxide, 2,5- Examples include dimethyl-bis (2,5-t-butylperoxy) hexane, di-t-butylperoxide, t-butylperbenzoate, 1,1-bis (t-butylperoxycarboxy) hexane, and the like. However, it is not particularly limited to these.
- the amount of component (b) added is an effective amount as a catalyst for promoting the crosslinking reaction of component (a).
- the amount of the component (a) is preferably 0.1 to 10 parts by mass, more preferably 0.2 to 2 parts by mass with respect to 100 parts by mass of the component.
- the added amount is less than 0.1 parts by mass with respect to 100 parts by mass of component (a)
- the amount added is more than 10 parts by mass relative to 100 parts by mass of component (a)
- foaming derived from component (b) occurs, and the strength and heat resistance of the cured reaction product are adversely affected. Receive.
- component (c) The organohydrogenpolysiloxane of component (c), which is an optional component, has at least two hydrogen atoms (SiH groups) bonded to silicon atoms (usually 2 to 200), preferably three or more. (Usually 3 to 100).
- component alone can be cured by adding the component (b) and heating, but by adding the component (c), compared to the case of the component (a) alone, ) Since it easily reacts with the component, it can be cured at a lower temperature and in a shorter time.
- the molecular structure of component (c) is not particularly limited.
- any conventionally produced organohydrogenpolysiloxane such as linear, cyclic, branched, and three-dimensional network (resin-like) can be used as component (c).
- the SiH group is bonded to the silicon atom only in one of the molecular chain terminal and the non-molecular chain terminal, but is bonded to the silicon atom in both of them. Also good.
- the number of silicon atoms in one molecule (or the degree of polymerization) is usually 2 to 300, preferably about 4 to 150, and the organohydrogenpolysiloxane that is liquid at room temperature (25 ° C.) (C) It can use preferably as a component.
- R 2 for example, the following average composition formula (2): R 2 b H c SiO (4-bc) / 2 (2) (Wherein, R 2 is identical or different unsubstituted or substituted, containing no aliphatic unsaturated bond, a monovalent hydrocarbon group having carbon atoms 1 to 10, more preferably 1 ⁇ 8, b And c are preferably 0.7 ⁇ b ⁇ 2.1, 0.001 ⁇ c ⁇ 1.0, and 0.8 ⁇ b + c ⁇ 3.0, more preferably 1.0 ⁇ b ⁇ 2.0, (It is a positive number satisfying 0.01 ⁇ c ⁇ 1.0 and 1.5 ⁇ b + c ⁇ 2.5.)
- R 2 include the same groups as R 1 in the average composition formula (1) (excluding alkenyl groups).
- organohydrogenpolysiloxane represented by the above average composition formula (2) examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, tris ( Hydrogendimethylsiloxy) methylsilane, tris (hydrogendimethylsiloxy) phenylsilane, methylhydrogencyclopolysiloxane, methylhydrogensiloxane-dimethylsiloxane cyclic copolymer, both ends trimethylsiloxy group-blocked methylhydrogenpolysiloxane, both ends Trimethylsiloxy group-blocked methylhydrogensiloxane / dimethylsiloxane copolymer, both ends methylhydrogensiloxy group-blocked dimethylpolysiloxane, both ends methylhydrogensiloxy group-blocked methylhydro Polysiloxane / dimethylsiloxane copolymer, tri
- the amount of component (c) added is preferably 0 to 100 parts by weight, more preferably 0 to 50 parts by weight, per 100 parts by weight of component (a).
- the added amount is more than 100 parts by mass with respect to 100 parts by mass of component (a)
- foaming derived from component (c) occurs, and the strength and heat resistance of the cured reaction product are adversely affected. .
- UV curable silicone composition Specific examples of the ultraviolet curable silicone composition include, for example, an ultraviolet curable silicone composition containing (d) an ultraviolet reactive organopolysiloxane and (e) a photopolymerization initiator.
- the ultraviolet-reactive organopolysiloxane of (d) component normally acts as a base polymer in an ultraviolet curable silicone composition.
- the component (d) is not particularly limited, and is preferably an organopolysiloxane having at least 2, more preferably 2 to 20, and particularly preferably 2 to 10 UV-reactive groups in one molecule.
- a plurality of the ultraviolet curable groups present in the organopolysiloxane may be the same or different.
- the organopolysiloxane of component (d) is basically composed of repeating diorganosiloxane units (R 1 2 SiO 2/2 units) in the molecular chain (main chain).
- R 1 is as described in relation to the formula (1).
- the organopolysiloxane of component (d) has a linear structure, it has an ultraviolet-reactive group only at one of the molecular chain terminal and the part that is not the molecular chain terminal. However, it is preferable to have UV reactive groups at least at both ends of the molecular chain.
- Examples of the ultraviolet reactive group include alkenyl groups such as vinyl group, allyl group and propenyl group; alkenyloxy groups such as vinyloxy group, allyloxy group, propenyloxy group and isopropenyloxy group; acryloyl group and methacryloyl group.
- the viscosity of the organopolysiloxane is not particularly limited, but is 100 mPa.s at 25 ° C. s to 1,000,000 mPa.s s, preferably 200 to 500,000 mPa.s. s, more preferably 200 to 100,000 mPa.s. Particularly preferred is s.
- component (d) for example, the following general formula (3a);
- R 3 is the same or different, unsubstituted or substituted monovalent hydrocarbon group having no UV-reactive group, and R 4 is the same or different group having an UV-reactive group, R 5 is the same or different group having an ultraviolet reactive group, m is an integer of 5 to 1,000, n is an integer of 0 to 100, f is an integer of 0 to 3, g is an integer of 0 to 3, provided that f + g + n ⁇ 2] Or the following general formula (3b);
- R 3 , R 4 , R 5 , m, n, f, and g are as defined in the general formula (3a), h is an integer of 2 to 4, and i and j are each 1 Is an integer of ⁇ 3, where fi + gj + n ⁇ 2]
- an organopolysiloxane having at least two ultraviolet-reactive groups represented by the formula:
- R 3 is preferably the same or different, unsubstituted or substituted monovalent, monovalent carbon atoms having no UV-reactive group, preferably 1 to 20, more preferably 1 to 10 is still more preferably 1 to 8 monovalent hydrocarbon group.
- the monovalent hydrocarbon group represented by R 3 include alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, and hexyl groups; aryl such as phenyl, tolyl, xylyl, and naphthyl groups.
- a cycloalkyl group such as a cyclopentyl group, a cyclohexyl group or a cyclopentyl group; an aralkyl group such as a benzyl group or a phenylethyl group; a part or all of the hydrogen atoms bonded to these hydrocarbon groups are halogen atoms or cyano groups
- a group substituted with a carboxyl group such as a chloromethyl group, a chloropropyl group, a bromoethyl group, a trifluoropropyl group, a cyanoethyl group, and a 3-cyanopropyl group, preferably a methyl group and a phenyl group, More preferably, a methyl group is mentioned.
- the monovalent hydrocarbon group represented by R 3 may have one or more sulfonyl groups, ether bonds (—O—), carbonyl groups and the like in its skeleton.
- examples of the ultraviolet reactive group contained in R 4 and R 5 include alkenyl groups such as vinyl group, allyl group, propenyl group; vinyloxy group, allyloxy group, propenyloxy Group, alkenyloxy group such as isopropenyloxy group; aliphatic unsaturated group other than alkenyl group such as acryloyl group and methacryloyl group; mercapto group; epoxy group; hydrosilyl group and the like, preferably acryloyl group, methacryloyl group, An epoxy group and a hydrosilyl group are mentioned, More preferably, an acryloyl group and a methacryloyl group are mentioned.
- the group having an ultraviolet reactive group represented by R 4 and R 5 is, for example, a monovalent group having the ultraviolet reactive group exemplified above.
- Specific examples thereof include a vinyl group, an allyl group, 3 -Glycidoxypropyl group, 2- (3,4-epoxycyclohexyl) ethyl group, 3-methacryloxypropyl group, 3-acryloxypropyl group, 3-mercaptopropyl group, 2- ⁇ bis (2-methacryloxyethoxy) ) Methylsilyl ⁇ ethyl group, 2- ⁇ bis (2-acryloxyethoxy) methylsilyl ⁇ ethyl group, 2- ⁇ (2-acryloxyethoxy) dimethylsilyl ⁇ ethyl group, 2- ⁇ bis (1,3-dimethacryloxy-2) -Propoxy) methylsilyl ⁇ ethyl group, 2- ⁇ (1,3-dimethacryloxy-2-propoxy) dimethylsilyl ⁇ ethyl
- m is usually an integer of 5 to 1,000, preferably 10 to 800, more preferably 50 to 500, and n is usually 0 to 100, preferably Is an integer from 0 to 50, more preferably from 0 to 20, f is an integer from 0 to 3, preferably from 0 to 2, more preferably from 1 to 2, and g is from 0 to 3, preferably from 0 to 2.
- h is usually an integer of 2 to 4, preferably 2 or 3.
- i and j are each an integer of 1 to 3, preferably 1 or 2.
- organopolysiloxane represented by the general formulas (3a) and (3b) has at least two ultraviolet-reactive groups as described above, f + g + n ⁇ 2 in the formula (3a), and in the formula (3b) fi + gj + n ⁇ 2.
- organopolysiloxane represented by the above formulas (3a) and (3b) include the following.
- R 6 is 90 mol% methyl group and 10 mol% phenyl group
- the photoinitiator of (e) component has the effect
- the component (e) is not particularly limited, and specific examples thereof include acetophenone, propiophenone, benzophenone, xanthol, fluorin, benzaldehyde, anthraquinone, triphenylamine, 4-methylacetophenone, 3-pentylacetophenone, 4- Methoxyacetophenone, 3-bromoacetophenone, 4-allylacetophenone, p-diacetylbenzene, 3-methoxybenzophenone, 4-methylbenzophenone, 4-chlorobenzophenone, 4,4'-dimethoxybenzophenone, 4-chloro-4'-benzylbenzophenone 3-chloroxanthone, 3,9-dichloroxanthone, 3-chloro-8-nonylxanthone, benzo
- benzophenone, 4-methoxyacetophenone, 4-methylbenzophenone, diethoxyacetophenone, 1-hydroxycyclohexyl phenyl ketone and 2-hydroxy-2-methyl-1-phenylpropan-1-one are preferable, and diethoxyacetophene is more preferable.
- photopolymerization initiators may be used alone or in combination of two or more.
- the amount of the component (e) added is not particularly limited, but is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 3 parts by mass, and still more preferably with respect to 100 parts by mass of the component (d). Is 0.5 to 3 parts by mass. When this addition amount is within this range, it is easy to control the curing of the silicone composition.
- Addition curable silicone composition specifically, for example, (f) an organopolysiloxane containing at least two alkenyl groups bonded to a silicon atom, (G) Organohydrogenpolysiloxane containing at least two hydrogen atoms bonded to silicon atoms (i.e., SiH groups) The silicon atoms in this component (g) per mole of alkenyl groups in the total curable silicone composition And an addition curable silicone composition containing an amount of 0.1 to 5 moles of hydrogen atoms bonded to and (h) an effective amount of a platinum group metal catalyst.
- the organopolysiloxane of the (f) component is a base polymer of the addition-curable silicone composition and contains at least two alkenyl groups bonded to silicon atoms.
- a known organopolysiloxane can be used as the component (f).
- the weight average molecular weight of the organopolysiloxane of component (f) measured by gel permeation chromatography (hereinafter referred to as “GPC”) is preferably about 3,000 to 300,000 in terms of polystyrene.
- the viscosity of the organopolysiloxane of component (f) at 25 ° C. is 100 to 1,000,000 mPa.s.
- the organopolysiloxane of the component is basically from the viewpoint of easy availability of raw materials because the molecular chain (main chain) is a repeating diorganosiloxane unit (R 7 2 SiO 2/2 unit).
- R 7 is as described in relation to equation (4) described below.
- R 7 l SiO (4-1) / 2 (4) (Wherein R 7 is the same or different, unsubstituted or substituted monovalent hydrocarbon group having 1 to 10, more preferably 1 to 8, carbon atoms, and l is preferably 1.5 to 2.8, more preferably 1.8 to 2.5, and even more preferably a positive number in the range of 1.95 to 2.05), and at least two alkenyl groups in one molecule.
- the organopolysiloxane having is used.
- R 7 include the groups exemplified for R 1 in the average composition formula (1).
- R 7 are alkenyl groups (particularly alkenyl groups having preferably 2 to 8, more preferably 2 to 6 carbon atoms).
- the content of the alkenyl group is in the total organic group bonded to the silicon atom (that is, in the unsubstituted or substituted all monovalent hydrocarbon group represented by R 7 in the average composition formula (4)), preferably 50. It is ⁇ 99 mol%, particularly preferably 75 to 95 mol%.
- the organopolysiloxane of component (f) has a linear structure, this alkenyl group is bonded to a silicon atom only in one of the molecular chain terminal and the non-molecular chain terminal, and both of them are silicon.
- At least one alkenyl group is bonded to a silicon atom at the end of the molecular chain in view of the curing speed of the composition, the physical properties of the cured product, and the like.
- the organohydrogenpolysiloxane has at least two hydrogen atoms (SiH groups) bonded to silicon atoms (usually 2 to 200), preferably 3 or more (usually 3 to 100).
- the component (g) reacts with the component (f) and acts as a crosslinking agent.
- the molecular structure of the component (g) is not particularly limited.
- any conventionally produced organohydrogenpolysiloxane such as linear, cyclic, branched, and three-dimensional network (resinous) can be used as the component (b).
- the SiH group is bonded to the silicon atom only in one of the molecular chain terminal and the non-molecular chain terminal, but is bonded to the silicon atom in both of them. Also good.
- the number of silicon atoms in one molecule (or the degree of polymerization) is usually 2 to 300, preferably about 4 to 150, and the organohydrogenpolysiloxane that is liquid at room temperature (25 ° C.) (G) It can use preferably as a component.
- R 8 is a monovalent hydrocarbon group having 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms, having the same or different unsubstituted or substituted, aliphatic unsaturated bonds, and p And q are preferably 0.7 ⁇ p ⁇ 2.1, 0.001 ⁇ q ⁇ 1.0, and 0.8 ⁇ p + q ⁇ 3.0, more preferably 1.0 ⁇ p ⁇ 2.0, (It is a positive number satisfying 0.01 ⁇ q ⁇ 1.0 and 1.5 ⁇ p + q ⁇ 2.5.)
- R 8 include the groups exemplified for R 1 in the average composition formula (1) (excluding alkenyl groups).
- organohydrogenpolysiloxane represented by the above average composition formula (3) examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, tris ( Hydrogendimethylsiloxy) methylsilane, tris (hydrogendimethylsiloxy) phenylsilane, methylhydrogencyclopolysiloxane, methylhydrogensiloxane-dimethylsiloxane cyclic copolymer, both ends trimethylsiloxy group-blocked methylhydrogenpolysiloxane, both ends Trimethylsiloxy group-blocked methylhydrogensiloxane / dimethylsiloxane copolymer, both ends methylhydrogensiloxy group-blocked dimethylpolysiloxane, both ends methylhydrogensiloxy group-blocked methylhydro Polysiloxane / dimethylsiloxane copolymer, tri
- the amount of component (g) added is, in particular, per mole of alkenyl groups in the total curable silicone composition, in particular per mole of alkenyl groups bonded to silicon atoms in the total curable silicone composition.
- the amount of SiH groups in this component (g) is 0.1 to 5.0 moles, preferably 0.5 to 3.0 moles, more preferably 0.8 moles per mole of alkenyl groups bonded to silicon atoms.
- the amount is 8 to 2.0 mol.
- the ratio of the alkenyl group bonded to the silicon atom in the component (f) to the alkenyl group present in the total curable silicone composition is preferably 80 to 100 mol%, and more preferably 90 to 100 mol%.
- the amount of SiH in the component (g) is about 0.1 per mole of the alkenyl group in the component (f).
- the amount is 1 to 5.0 mol, preferably 0.5 to 3.0 mol, more preferably 0.8 to 2.0 mol.
- the added amount is such that the amount of SiH is less than 0.1 mol, it takes a long time to cure, which is economically disadvantageous.
- the amount added is such that the amount of SiH is more than 5.0 mol, foaming due to dehydrogenation reaction occurs in the cured reaction product, and the strength and heat resistance of the cured reaction product are adversely affected. Receive.
- the platinum group metal catalyst of the (h) component is used as a catalyst for promoting an addition curing reaction (hydrosilylation reaction) between the (f) component and the (g) component.
- a known platinum group metal catalyst can be used, but it is preferable to use platinum or a platinum compound.
- Specific examples of the component (h) include platinum black, platinous chloride, chloroplatinic acid, alcohol-modified products of chloroplatinic acid, and complexes of chloroplatinic acid with olefins, aldehydes, vinyl siloxanes, or acetylene alcohols. .
- the amount of component (h) added is an effective amount as a catalyst, and may be increased or decreased in a timely manner according to the desired curing reaction rate. Is in the range of 0.1 to 1,000 ppm, more preferably 0.2 to 100 ppm.
- condensation curable silicone composition specifically, for example, (I) an organopolysiloxane containing at least two silanol groups (that is, silicon atom-bonded hydroxyl groups) or silicon atom-bonded hydrolyzable groups, preferably at both ends of the molecular chain; (J) A hydrolyzable silane and / or a partially hydrolyzed condensate thereof as an optional component, and (k) a condensation curable silicone composition containing a condensation reaction catalyst as an optional component.
- Component is an organopolysiloxane containing at least two silanol groups or silicon atom-bonded hydrolyzable groups, and is a base polymer of a condensation curable silicone composition.
- the organopolysiloxane of component (i) is basically composed of repeating diorganosiloxane units (R 9 2 SiO 2/2 units) in terms of molecular chain (main chain). A chain structure in which both ends of the molecular chain are blocked with a triorganosiloxy group (R 9 3 SiO 1/2 ), a linear structure having no branches, or a molecular chain consisting of repeating diorganosiloxane units.
- R 9 represents an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms.
- examples of hydrolyzable groups other than silanol groups include acyl groups such as acetoxy group, octanoyloxy group, benzoyloxy group; dimethyl ketoxime group, methyl ethyl ketoxime group, diethyl Ketoxime groups such as ketoxime groups (ie, iminoxy groups); alkoxy groups such as methoxy groups, ethoxy groups, and propoxy groups; alkoxyalkoxy groups such as methoxyethoxy groups, ethoxyethoxy groups, and methoxypropoxy groups; vinyloxy groups, isopropenyloxy Groups, alkenyloxy groups such as 1-ethyl-2-methylvinyloxy group; amino groups such as dimethylamino group, diethylamino group, butylamino group and cyclohexylamino group; aminoxy groups such as dimethylaminoxy group and diethylaminoxy group ;
- hydrolyzable groups include, for example, trialkoxysiloxy groups, dialkoxyorganosiloxy groups, triacyloxysiloxy groups, diacyloxyorganosiloxy groups, triiminoxysiloxy groups (ie, triketoxime siloxy groups), diiminoxy groups
- Siloxy groups containing 2 or 3 hydrolyzable groups such as organosiloxy groups, trialkenoxysiloxy groups, dialkenoxy otsuganosyloxy groups, trialkoxysiloxyethyl groups, dialkoxyorganosiloxyethyl groups, or two Alternatively, it is desirable to be located at both ends of the molecular chain of the linear diorganopolysiloxane in the form of a siloxyalkyl group containing three hydrolyzable groups.
- Examples of the other monovalent hydrocarbon group bonded to the silicon atom include the same unsubstituted or substituted monovalent hydrocarbon groups as those exemplified for R 1 in the average composition formula (1).
- X is a hydrolyzable group other than the silanol group, a is 1, 2 or 3, and n and m are each an integer of 1 to 1,000] Is mentioned.
- component (i) examples include molecular chain both ends silanol-blocked dimethylpolysiloxane, molecular chain both ends silanol-blocked dimethylsiloxane / methylphenylsiloxane copolymer, molecular chain both ends silanol-blocked dimethylsiloxane / diphenylpolysiloxane.
- Siloxane copolymer trimethoxysiloxy group-capped dimethylpolysiloxane with molecular chain at both ends, trimethoxysiloxy group-capped dimethylsiloxane / methylphenylsiloxane copolymer with molecular chain at both ends, trimethoxysiloxy group-capped dimethylsiloxane / diphenyl Examples thereof include polysiloxane copolymers, 2-trimethoxysiloxyethyl group-capped dimethylpolysiloxane having both molecular chain ends. These can be used singly or in combination of two or more.
- hydrolysable silane of the (j) component and / or its partial hydrolysis-condensation product are optional components, and act as a curing agent.
- component (i) which is a base polymer is an organopolysiloxane containing at least two silicon-bonded hydrolyzable groups other than silanol groups in one molecule
- component (j) component is a condensation-curable silicone composition It can be omitted.
- a silane containing at least 3 silicon atom-bonded hydrolyzable groups in one molecule and / or a partial hydrolysis condensate thereof that is, at least one, preferably two or more hydrolysis products
- An organopolysiloxane in which a functional group remains is preferably used.
- Examples of the silane include a formula: R 10 r SiX 4-r (6) (Wherein R 10 is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms, X is a hydrolyzable group, and r is 0 or 1.) What is represented by these is used preferably.
- R 10 is particularly preferably an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group or a hexyl group; an aryl group such as a phenyl group or a tolyl group; an alkenyl group such as a vinyl group or an allyl group. can give.
- component (j) examples include, for example, methyltriethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, ethyl orthosilicate and the like, and partial hydrolysis condensates thereof. These can be used singly or in combination of two or more.
- the amount added is preferably 0.01 to 20 parts by mass, particularly preferably 0 with respect to 100 parts by mass of the component (i). 1 to 10 parts by mass.
- the storage stability and curing reaction rate of the composition of the present invention are particularly good when the amount added is within the above range.
- the condensation reaction catalyst of component (k) is an optional component, and the hydrolyzable silane and / or its partial hydrolysis-condensation product of component (j) is, for example, an aminoxy group, amino group, ketoxime group It is not necessary to use it when it has.
- the condensation reaction catalyst for component (k) include organic titanates such as tetrabutyl titanate and tetraisobropyrutitanate; diisopropoxybis (acetylacetonato) titanium, diisopropoxybis (ethylacetoacetate) titanium and the like.
- Organic titanium chelate compounds Organoaluminum compounds such as aluminum tris (acetylacetonate) and aluminum tris (ethylacetoacetate); organozirconium compounds such as zirconium tetra (acetylacetonate) and zirconium tetrabutyrate; dibutyltin dioctoate, Organotin compounds such as dibutyltin dilaurate and dibutyltin di (2-ethylhexanoate); tin naphthenate, tin oleate, tin butyrate, cobalt naphthenate, stearic acid Metal salts of organic carboxylic acids such as: amine compounds such as hexylamine and dodecylamine phosphate, and salts thereof; quaternary ammonium salts such as benzyltriethylammonium acetate; lower fatty acid salts of alkali metals such as potassium acetate and lithium
- the amount added is not particularly limited and may be an effective amount as a catalyst, but is preferably 0.01 to 20 parts by mass with respect to 100 parts by mass of component (i). Particularly preferred is 0.1 to 10 parts by mass.
- the component (k) it is economically advantageous from the viewpoint of curing time and curing temperature when the amount added is within the above range.
- a cured silicone is obtained by curing the above curable silicone composition.
- the curing conditions at this time are appropriately set according to the type of curable silicone composition to be used. Hereinafter, this point will be described.
- the temperature for curing the organic peroxide silicone composition is not particularly limited because the curing reaction depends on the impregnation rate or the amount of impregnation of the curable silicone composition, but is preferably 80 ° C. to 300 ° C., more preferably 150 ° C. ⁇ 250 ° C. Further, secondary curing may be performed as necessary, and the temperature condition at that time is preferably 120 ° C. or higher, more preferably 150 ° C. to 250 ° C. The curing time at this time is preferably 10 minutes to 48 hours, more preferably 30 minutes to 24 hours.
- UV curable silicone composition By irradiating the substrate impregnated with the ultraviolet curable silicone composition with ultraviolet rays, the photopolymerization initiator reacts, the curing reaction proceeds, and the ultraviolet curable silicone composition is cured.
- the ultraviolet irradiation conditions are not particularly limited because the curing reaction depends on the impregnation rate or the amount of impregnation, but an ultraviolet light emitting diode having an emission wavelength of 365 nm is used, and the illuminance is 5 to 500 mW / cm 2 , preferably 10 to 200 mW / cm 2 , light quantity 0.5-100 J / cm 2 , preferably.
- the temperature at that time is preferably 120 ° C. or higher, more preferably 150 ° C. to 250 ° C.
- the curing time at this time is preferably 10 minutes to 48 hours, more preferably 30 minutes to 24 hours.
- the hydrosilylation reaction proceeds and the addition-curable silicone composition is cured.
- the heating temperature at this time is not particularly limited because the curing reaction depends on the impregnation rate or the impregnation amount, but is preferably 80 to 300 ° C., more preferably 100 to 200 ° C. Further, secondary curing may be performed as necessary, and the temperature condition at that time is preferably 120 ° C. or higher, more preferably 150 ° C. to 250 ° C.
- the curing time at this time is preferably 10 minutes to 48 hours, more preferably 30 minutes to 24 hours.
- condensation curable silicone composition By heating the substrate impregnated with the condensation curable silicone composition, the condensation reaction proceeds, and the condensation curable silicone composition is cured.
- the temperature at which the condensation-curable silicone composition is cured is not particularly limited because the curing reaction depends on the impregnation rate or the amount of impregnation, but is preferably 80 ° C. to 300 ° C., more preferably 100 ° C. to 200 ° C. Further, secondary curing may be performed as necessary, and the temperature condition at that time is preferably 120 ° C. or higher, more preferably 150 ° C. to 250 ° C. The curing time at this time is preferably 10 minutes to 48 hours, more preferably 30 minutes to 24 hours.
- the silicone cured product obtained as described above is heat-treated in a non-oxidizing atmosphere to obtain the silicon carbide powder.
- This heat treatment is performed in a non-oxidizing atmosphere, preferably in an inert gas atmosphere.
- the inert gas include nitrogen gas, argon gas, helium gas and the like, and argon gas is particularly preferable for obtaining high-purity silicon carbide.
- the heat treatment is performed at a temperature exceeding 1500 ° C. and not more than 2200 ° C.
- the heating temperature is preferably 1600 ° C. or higher.
- the heating temperature is preferably 2100 ° C. or less, and more preferably 2000 ° C. or less.
- the heat treatment is usually performed by heating the silicone cured product from room temperature to raise the temperature, first performing heat treatment at 400 to 1500 ° C., then raising the temperature to a temperature range exceeding 1500 ° C., and heat treatment at that temperature. Can be done.
- the silicon carbide powder thus obtained may be further pulverized by a pulverizer such as a ball mill as necessary.
- Organic binder examples of the organic binder used in the composition of the present invention include methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and polyethylene glycol. Among these, methylcellulose is preferable.
- the blending amount of the organic binder is usually preferably 1 part by mass or more and more preferably 2 parts by mass or more with respect to 100 parts by mass of the silicon carbide powder. Further, the blending amount is preferably 10 parts by mass or less, and more preferably 8 parts by mass or less.
- composition of the present invention other components other than the silicon carbide powder and the organic binder, such as a plasticizer and a lubricant, are added as necessary unless the object and effect of the present invention are impaired. May be. In particular, there is no problem as long as it becomes carbon when the composition is baked. It does not specifically limit as a plasticizer, For example, glycerol etc. are mentioned.
- the lubricant is not particularly limited, and examples thereof include polyoxyalkylene compounds such as polyoxyethylene alkyl ether and polyoxypropylene alkyl ether. These optional components are generally desirably 5 parts by mass or less per 100 parts by mass of silicon carbide powder.
- the composition of the present invention does not need to contain a sintering aid.
- sintering aids include alumina and boron.
- Such a sintering aid has a problem that a silicon carbide sintered body obtained by an impurity element such as boron is contaminated and is difficult to use in the field of semiconductor device manufacturing.
- the composition of the present invention becomes a silicon carbide sintered body having a required shape and strength without adding such a sintering aid.
- composition of this invention can be prepared as mixed powder by dry-mixing the said silicon carbide powder and an organic binder, for example. If necessary, water or a mixed liquid obtained by mixing a plasticizer, a lubricant, and the like with water may be added to the mixture powder, and the resulting mixture may be mixed using a wet mixer. When the composition is subjected to press molding in the next step, the composition is dried and water is evaporated. In this case, the composition is preferably dried at a temperature of 80 to 150 ° C. for 1 to 10 hours.
- the above-mentioned wet composition can be used as a clay as it is, and the water content in the composition at that time is 8 to 30 parts by mass with respect to 100 parts by mass of the solid content. Is preferred.
- the method for producing the silicon carbide molded body of the present invention comprises: (1) The above silicon carbide powder composition is molded to obtain a silicon carbide powder molded body, (2) Degreasing the silicon carbide powder compact, (3) Next, the degreased silicon carbide powder compact is fired in a non-oxidizing atmosphere. Process.
- Step (1) Molding In the step, the composition is molded.
- the molding method for example, press molding and extrusion molding are preferable.
- Press molding can obtain a molded body having a desired shape, for example, by filling the mold with the dried composition and pressurizing the mold. Press molding is suitable for obtaining a compact having a complicated shape.
- press molding it is desirable to use the obtained molded body for CIP molding after performing normal press molding. That is, first, a required composition is subjected to normal press molding at room temperature and then depressurized. At this time, the pressure of the press is preferably 50 to 200 kgf / cm 2 . Next, the obtained molded body is pressed using a CIP molding machine (Cold Isostatic Press). CIP molding is performed on a rubber mold having the same mold as the above mold. A molded article can be placed and uniformly pressurized from above, below, left, and right with a medium such as water to obtain a high-density molded body, and the pressing pressure at this time is preferably 500 to 4000 kgf / cm 2 .
- Extrusion molding is suitable for continuously forming a rod-like, tubular or strip-like long article.
- the heating temperature of the electrothermal hot stove is preferably 80 to 500 ° C., particularly preferably 100 to 250 ° C., and the heating time may be selected in the range of 1 to 30 minutes.
- -Step (2) Degreasing treatment
- the molded composition is subjected to a degreasing treatment, and the organic binder is removed or thermally decomposed.
- the compact In a non-oxidizing atmosphere, the compact is heat-treated at a temperature in the range of 400 ° C. to 1500 ° C., preferably 600 ° C. to 1200 ° C.
- the degreasing treatment the molded body becomes inorganic. If the temperature of the heat treatment is too low, it is difficult to thermally decompose and remove the binder, and if the temperature is too high, deformation and melting occur when the furnace material of the heat treatment furnace is metal or alumina.
- This heat treatment is performed in a non-oxidizing atmosphere, preferably in an inert gas atmosphere.
- the inert gas include nitrogen gas, argon gas, helium gas and the like, and particularly economically advantageous nitrogen gas is preferable.
- Step (3) Firing treatment
- the molded body that has undergone the above degreasing treatment is fired at a higher temperature in a non-oxidizing atmosphere. Thereby, the integrated silicon carbide molded object produces
- the calcination is performed at a temperature exceeding 1500 ° C. and not more than 2200 ° C.
- the heating temperature is preferably 1600 ° C. or higher.
- the heating temperature is preferably 2200 ° C. or lower.
- a carbon furnace is suitable for this firing treatment, but when the temperature exceeds 2200 ° C., the carbon base material of the furnace material is severely decomposed.
- the silicon carbide molded body thus obtained contains a large amount of free carbon, it can be removed by heat-treating the silicon carbide molded body in air.
- the heat treatment may be performed at 400 ° C. to 1000 ° C. in the air.
- This silicone cured product is put into an alumina boat and heated in an atmosphere furnace in a nitrogen gas atmosphere at a temperature rising rate of 100 ° C./hour from room temperature to 1000 ° C. over about 10 hours. Held for hours. Thereafter, it was cooled to room temperature at a rate of 200 ° C./hour. As a result, a black inorganic powder substantially consisting of carbon, silicon and oxygen was obtained.
- this black inorganic powder is put into a carbon container, and in a carbon furnace, the temperature is increased to 2000 ° C. over 20 hours at a temperature increase rate of 100 ° C./hour in an argon gas atmosphere, and the 2000 ° C. is maintained for 2 hours. Then, it was cooled to room temperature at a rate of 200 ° C./hour. A green silicon carbide powder was thus obtained.
- Example 2 Manufacture of silicon carbide moldings 100 parts by mass of silicon carbide powder obtained in Example 1 and 3 parts by mass of methyl cellulose (trade name: Metroles, manufactured by Shin-Etsu Chemical Co., Ltd.) as an organic binder and planetary ball mill P-4 type (registered trademark, Fritsch Japan) (Made by Co., Ltd.) and mixed for 1 hour at room temperature. 20 parts by mass of water was added to the obtained mixed powder, and the mixture was put into a planetary mixer (registered trademark, a mixer manufactured by Inoue Seisakusho Co., Ltd.) and stirred at room temperature for 1 hour to obtain a clay. Thereafter, the kneaded material was heated at 105 ° C. for 5 hours to evaporate water, and a powdery raw material composition was obtained.
- a planetary mixer registered trademark, a mixer manufactured by Inoue Seisakusho Co., Ltd.
- This raw material composition was put into a mold and pressed at a pressure of 100 kgf / cm 2 for 5 minutes to obtain a sheet-like molded product having a length of 40 mm ⁇ width of 40 mm ⁇ thickness of 2 mm. Further, this molded product was put in a rubber mold and pressed for 1 hour at a pressure of 2000 kgf / cm 2 using a CIP molding machine, Dr. CIP (registered trademark, manufactured by Kobe Steel, Ltd.). The dimensions after CIP molding were 39 mm long ⁇ 39 mm wide ⁇ 2 mm thick.
- the molded product thus obtained was heated to 1000 ° C. in a nitrogen gas atmosphere and cooled to obtain a black inorganic molded product substantially composed of carbon, silicon and oxygen.
- the size of this inorganic molded product was 39 mm long ⁇ 39 mm wide ⁇ 2 mm thick, and the shape was almost the same as that before the heat treatment.
- this inorganic molded product was heated in an argon gas atmosphere, heated to 2000 ° C., heated at 2000 ° C., and then cooled to obtain a green silicon carbide molded product.
- the size of this silicon carbide molded product was 39 mm long ⁇ 39 mm wide ⁇ 2 mm thick, and the shape was almost the same as the inorganic molded product.
- Example 3 Manufacture of silicon carbide moldings 100 parts by mass of the silicon carbide powder obtained in Example 1 and 6 parts by mass of methylcellulose as an organic binder were mixed in the same manner as in Example 2. To the obtained mixed powder, 3 parts by mass of lubricating oil (trade name: UNILOVE, manufactured by NOF Corporation), 1 part by mass of glycerin (manufactured by Sigma Aldrich Japan Co., Ltd.) as a plasticizer, and 20 parts by mass of water are added. These were put into a planetary mixer (registered trademark, a mixer manufactured by Inoue Seisakusho Co., Ltd.) and stirred at room temperature for 1 hour to obtain a raw material composition as clay.
- lubricating oil trade name: UNILOVE, manufactured by NOF Corporation
- glycerin manufactured by Sigma Aldrich Japan Co., Ltd.
- water 20 parts by mass of water
- This raw material composition was put into an extrusion molding machine (trade name: FM-P20, manufactured by Miyazaki Tekko Co., Ltd.) and continuously extruded from a die having an outer diameter of 12 mm and an inner diameter of 9 mm.
- a pipe-shaped product having an outer diameter of 12 mm, an inner diameter of 9 mm, and a length of 10 mm was obtained.
- a green silicon carbide molded product was obtained.
- the silicon carbide molded product had an outer diameter of 11.5 mm ⁇ an inner diameter of 9 mm ⁇ 10 mm, which was very close to the size after the CIP molding, and the pipe shape was almost the same.
- Example 2 A raw material composition was prepared in the same manner as in Example 3, except that a commercially available silicon carbide powder (trade name: Shinano Random, manufactured by Shinano Denki Co., Ltd.) was used instead of the silicon carbide powder obtained in Example 3. This was prepared, formed into a pipe shape by an extruder, and degreased and fired. As a result, the shape of the pipe was not maintained and a fine powder product was obtained.
- a commercially available silicon carbide powder trade name: Shinano Random, manufactured by Shinano Denki Co., Ltd.
- the silicon carbide powder composition of the present invention is useful for easily producing a molded body having a complicated shape composed of a high-purity silicon carbide sintered body. Such a molded body is useful, for example, in the manufacture of semiconductor devices.
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Abstract
Description
本発明は、第二に、
上記の炭化ケイ素粉末組成物を成形して炭化ケイ素粉末成形体を得、
該炭化ケイ素粉末成形体を脱脂処理し、
次に、脱脂処理した炭化ケイ素粉末成形体を非酸化性雰囲気中で焼成処理する、
工程を含む炭化ケイ素成形体の製造方法を提供する。
本発明は、第三に、
上記の製造方法により得られる炭化ケイ素成形体を提供する。
本発明の炭化ケイ素粉末組成物は特定の炭化ケイ素粉末と有機バインダを必須の成分として含む。
・炭化ケイ素粉末:
本組成物に使用される炭化ケイ素粉末は、シリコーン硬化物を焼成して得られる炭化ケイ素粉末である。
有機過酸化物硬化性シリコーン組成物として、具体的には、例えば、
(a)ケイ素原子に結合したアルケニル基を少なくとも2個含有するオルガノポリシロキサン及び
(b)有機過酸化物及び任意成分として
(c)ケイ素原子に結合した水素原子(即ち、SiH基)を少なくとも2個含有するオルガノハイドロジェンポリシロキサン 全硬化性シリコーン組成物中のアルケニル基1モル当たり、本(c)成分中のケイ素原子に結合した水素原子の量が0.1~2モルとなる量
を含有する有機過酸化物硬化性シリコーン組成物があげられる。
(a)成分のオルガノポリシロキサンは、有機過酸化物硬化性シリコーン組成物のベースポリマーである。(a)成分のオルガノポリシロキサンの重合度は特に限定されず、(a)成分としては、25℃で液状のオルガノポリシロキサンから生ゴム状のオルガノポリシロキサンまで使用できるが、平均重合度が好ましくは50~20,000、より好ましくは100~10,000、更により好ましくは100~2,000程度のオルガノポリシロキサンが好適に使用される。また、(a)成分のオルガノポリシロキサンは、基本的には、原料の入手のしやすさの観点から、分子鎖がジオルガノシロキサン単位(R1 2SiO2/2単位)の繰返しからなり、分子鎖両末端がトリオルガノシロキシ基(R1 3SiO1/2)もしくはヒドロキシジオルガノシロキシ基((HO)R1 2SiO1/2単位)で封鎖された、分岐を有しない直鎖構造、又は分子鎖が該ジオルガノシロキサン単位の繰返しからなる、分岐を有しない環状構造を有するが、三官能性シロキサン単位やSiO2単位等の分岐状構造を部分的に含有してもよい。ここで、R1は下に説明する式(1)において定義の通りである。
R1 aSiO(4-a)/2 (1)
(式中、R1は同一又は異種の非置換もしくは置換の、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基を表し、R1の50~99モル%はアルケニル基であり、aは1.5~2.8、より好ましくは1.8から2.5、さらにより好ましくは1.95~2.05の範囲の正数である。)で示され、一分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサンが用いられる。
(b)成分は、有機過酸化物硬化性オルガノポリシロキサン組成物において(a)成分の架橋反応を促進するための触媒として使用される有機過酸化物である。(b)成分としては、(a)成分の架橋反応を促進することができる限り、従来公知の有機過酸化物を使用することができる。その具体例としては、ベンソイルパーオキサイド、2,4-ジクロロベンソイルパーオキサイド、p-メチルベンソイルパーオキサイド、o-メチルベンソイルパーオキサイド、2,4-ジクミルパーオキサイド、2,5-ジメチル-ビス(2,5-t-ブチルパーオキシ)へキサン、ジ-t-ブチルパーオキサイド、t-ブチルパーベンゾエート、1,1-ビス(t-ブチルパーオキシカルボキシ)へキサン等が挙げられるが特にこれらに限定されるものではない。
任意成分である(c)成分のオルガノハイドロジェンポリシロキサンは、ケイ素原子に結合した水素原子(SiH基)を少なくとも2個(通常2~200個)、好ましくは3個以上(通常3~100個)含有する。(a)成分単独でも(b)成分を添加し、加熱することで硬化させることが可能であるが、(c)成分を添加することで、(a)成分単独の場合と比べて、(a)成分と反応しやすいため、より低温かつ短時間で、硬化させることができる。(c)成分の分子構造は特に限定されず、例えば、線状、環状、分岐状、三次元網状(樹脂状)等の、従来製造されているいずれのオルガノハイドロジェンポリシロキサンも(c)成分として使用することができる。(c)成分が線状構造を有する場合、SiH基は、分子鎖末端及び分子鎖末端でない部分のどちらか一方でのみケイ素原子に結合していても、その両方でケイ素原子に結合していてもよい。また、1分子中のケイ素原子の数(又は重合度)が、通常、2~300個、好ましくは4~150個程度であり、室温(25℃)において液状であるオルガノハイドロジェンポリシロキサンが、(c)成分として好ましく使用できる。
R2 bHcSiO(4-b-c)/2 (2)
(式中、R2は同一又は異種の非置換もしくは置換の、脂肪族不飽和結合を含有しない、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基であり、b及びcは、好ましくは0.7≦b≦2.1、0.001≦c≦1.0、かつ0.8≦b+c≦3.0、より好ましくは1.0≦b≦2.0、0.01≦c≦1.0、かつ1.5≦b+c≦2.5を満足する正数である。)
で示されるオルガノハイドロジェンポリシロキサンが用いられる。上記R2としては、例えば、上記平均組成式(1)中のR1と同様の基(ただし、アルケニル基を除く。)が挙げられる。
紫外線硬化性シリコーン組成物として、具体的には、例えば
(d)紫外線反応性オルガノポリシロキサン、及び
(e)光重合開始剤
を含有する紫外線硬化性シリコーン組成物が挙げられる。
(d)成分の紫外線反応性オルガノポリシロキサンは、通常、紫外線硬化性シリコーン組成物においてベースポリマーとして作用する。(d)成分は、特に限定されず、好ましくは1分子中に少なくとも2個、より好ましくは2~20個、特に好ましくは2~10個の紫外線反応性基を有するオルガノポリシロキサンである。このオルガノポリシロキサン中に複数存在する前記紫外線硬化性基は、すべて同一でも異なっていてもよい。
又は下記一般式(3b);
で表される少なくとも2個の紫外線反応性基を有するオルガノポリシロキサンが挙げられる。
(e)成分の光重合開始剤は、前記(d)成分中の紫外線反応性基の光重合を促進させる作用を有する。(e)成分は特に限定されず、その具体例としては、アセトフェノン、プロピオフェノン、ベンゾフェノン、キサントール、フルオレイン、ベンズアルデヒド、アンスラキノン、トリフェニルアミン、4-メチルアセトフェノン、3-ペンチルアセトフェノン、4-メトキシアセトフェノン、3-ブロモアセトフェノン、4-アリルアセトフェノン、p-ジアセチルベンゼン、3-メトキシベンゾフェノン、4-メチルベンゾフェノン、4-クロロベンゾフェノン、4,4’-ジメトキシベンゾフェノン、4-クロロ-4’-ベンジルベンゾフェノン、3-クロロキサントン、3,9-ジクロロキサントン、3-クロロ-8-ノニルキサントン、ベンゾイン、ベンゾインメチルエーテル、ベンゾインブチルエーテル、ビス(4-ジメチルアミノフェニル)ケトン、ベンジルメトキシアセタール、2-クロロチオキサントン、ジエチルアセトフェノン、1-ヒドロキシクロロフェニルケトン、1-ヒドロキシシクロヘキシルフェニルケトン、2-メチル-(4-(メチルチオ)フェニル)-2-モルホリノ-1-プロパン、2,2-ジメトキシ-2-フェニルアセトフェノン、ジエトキシアセトフェノン及び2-ヒドロキシ-2-メチル-1-フェニルプロパン-1-オン等が挙げられ、好ましくは高純度の観点からベンゾフェノン、4-メトキシアセトフェノン、4-メチルベンゾフェノン、ジエトキシアセトフェノン、1-ヒドロキシシクロヘキシルフェニルケトン及び2-ヒドロキシ-2-メチル-1-フェニルプロパン-1-オンが挙げられ、より好ましくはジエトキシアセトフェノン、1-ヒドロキシシクロヘキシルフェニルケトン及び2-ヒドロキシ-2-メチル-1-フェニルプロパン-1-オンが挙げられる。これらの光重合開始剤は1種単独で用いても2種以上を併用してもよい。
付加硬化性シリコーン組成物として、具体的には、例えば
(f)ケイ素原子に結合したアルケニル基を少なくとも2個含有するオルガノポリシロキサン、
(g)ケイ素原子に結合した水素原子(即ち、SiH基)を少なくとも2個含有するオルガノハイドロジェンポリシロキサン 全硬化性シリコーン組成物中のアルケニル基1モル当たり、本(g)成分中のケイ素原子に結合した水素原子の量が0.1~5モルとなる量、及び
(h)白金族金属系触媒 有効量
を含有する付加硬化性シリコーン組成物が挙げられる。
(f)成分のオルガノポリシロキサンは、付加硬化性シリコーン組成物のベースポリマーであり、ケイ素原子に結合したアルケニル基を少なくとも2個含有する。(f)成分としては公知のオルガノポリシロキサンを使用することが出来る。ゲルパーミッションクロマトグラフィー(以下、「GPC」とする。)により測定された(f)成分のオルガノポリシロキサンの重量平均分子量はポリスチレン換算で好ましくは3,000~300,000程度である。さらに(f)成分のオルガノポリシロキサンの25℃に置ける粘度は、100~1,000,000mPa.sであることが好ましく、1,000~100,000mPa.s程度であることが特に好ましい。100mPa.s以下であると曳糸性が低く、繊維の細径化が困難となり、1,000,000mPa.s以上では取扱が困難となる。(f)成分のオルガノポリシロキサンは、基本的には、原料の入手のしやすさの観点から、分子鎖(主鎖)がジオルガノシロキサン単位(R7 2SiO2/2単位)の繰返しからなり、分子鎖両末端がトリオルガノシロキシ基(R7 3SiO1/2)で封鎖された、分岐を有しない直鎖状構造、又は分子鎖が該ジオルガノシロキサン単位の繰返しからなる、分岐を有しない環状構造を有するが、R7SiO3/2単位やSiO4/2単位を含んだ分岐状構造を部分的に有してもよい。ここで、R7は下に説明する式(4)に関して述べる通りである。
R7 lSiO(4-l)/2 (4)
(式中、R7は、同一又は異種の、非置換もしくは置換の、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基であり、lは好ましくは1.5~2.8、より好ましくは1.8から2.5、さらにより好ましくは1.95~2.05の範囲の正数である。)で示され、一分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサンが用いられる。上記R7としては、例えば、上記平均組成式(1)中のR1について例示した基が挙げられる。
(g)成分のオルガノハイドロジェンポリシロキサンは、ケイ素原子に結合した水素原子(SiH基)を少なくとも2個(通常2~200個)、好ましくは3個以上(通常3~100個)含有する。(g)成分は、(f)成分と反応し架橋剤として作用する。(g)成分の分子構造は特に限定されず、例えば、線状、環状、分岐状、三次元網状(樹脂状)等の、従来製造されているいずれのオルガノハイドロジェンポリシロキサンも(b)成分として使用することができる。(g)成分が線状構造を有する場合、SiH基は、分子鎖末端及び分子鎖末端でない部分のどちらか一方でのみケイ素原子に結合していても、その両方でケイ素原子に結合していてもよい。また、1分子中のケイ素原子の数(又は重合度)が、通常、2~300個、好ましくは4~150個程度であり、室温(25℃)において液状であるオルガノハイドロジェンポリシロキサンが、(g)成分として好ましく使用できる。
R8 pHqSiO(4-p-q)/2 (5)
(式中、R8は同一又は異種の非置換もしくは置換の、脂肪族不飽和結合を有しない、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基であり、p及びqは、好ましくは0.7≦p≦2.1、0.001≦q≦1.0、かつ0.8≦p+q≦3.0、より好ましくは1.0≦p≦2.0、0.01≦q≦1.0、かつ1.5≦p+q≦2.5を満足する正数である。)
で示されるオルガノハイドロジェンポリシロキサンが用いられる。上記R8としては、例えば、上記平均組成式(1)中のR1について例示した基(ただし、アルケニル基を除く。)が挙げられる。
また、該添加量が上記SiHの量が5.0モルより多くなる量であると該硬化反応物中に脱水素反応による発泡が生じてしまい、さらに該硬化反応物の強度及び耐熱性が悪影響を受ける。
(h)成分の白金族金属系触媒は、(f)成分と(g)成分との付加硬化反応(ヒドロシリル化反応)を促進させるための触媒として使用される。(h)成分としては、公知の白金族金属系触媒を用いることができるが、白金もしくは白金化合物を用いることがこのましい。(h)成分の具体例としては、白金黒、塩化第二白金、塩化白金酸、塩化白金酸のアルコール変性物、塩化白金酸とオレフィン、アルデヒド、ビニルシロキサン又はアセチレンアルコール類との錯体が挙げられる。
縮合硬化性シリコーン組成物として、具体的には、例えば、
(i)シラノール基(即ちケイ素原子結合水酸基)又はケイ素原子結合加水分解性基を少なくとも2個、好ましくは分子鎖両末端に含有するオルガノポリシロキサン、
(j)任意成分として、加水分解性シラン及び/又はその部分加水分解縮合物、ならびに
(k)任意成分として、縮合反応触媒
を含有する縮合硬化性シリコーン組成物が挙げられる。
(i)成分はシラノール基又はケイ素原子結合加水分解性基を少なくとも2個含有するオルガノポリシロキサンであり、縮合硬化性シリコーン組成物のベースポリマーである。(i)成分のオルガノポリシロキサンは、基本的には、原料の入手のしやすさの観点から、分子鎖(主鎖)がジオルガノシロキサン単位(R9 2SiO2/2単位)の繰返しからなり、分子鎖両末端がトリオルガノシロキシ基(R9 3SiO1/2)で封鎖された、分岐を有しない直鎖状構造、又は分子鎖が該ジオルガノシロキサン単位の繰返しからなる、分岐を有しない環状構造を有するが、分岐状構造を部分的に含有してもよい。ここで、R9は非置換もしくは置換の、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基を表す。
R1について例示したものと同じ非置換又は置換の一価炭化水素基が挙げられる。
が挙げられる。
(j)成分の加水分解性シラン及び/又はその部分加水分解縮合物は任意成分であり、硬化剤として作用する。ベースポリマーである(i)成分がシラノール基以外のケイ素原子結合加水分解性基を1分子中に少なくとも2個含有するオルガノポリシロキサンである場合には、(j)成分を縮合硬化性シリコーン組成物に添加するのを省略することができる。(j)成分としては、1分子中に少なくとも3個のケイ素原子結合加水分解性基を含有するシラン及び/又はその部分加水分解縮合物(即ち、少なくとも1個、好ましくは2個以上の加水分解性基が残存するオルガノポリシロキサン)が好適に使用される。
R10 rSiX4-r (6)
(式中、R10は非置換もしくは置換の、炭素原子数が1~10、より好ましくは1~8の一価炭化水素基、Xは加水分解性基、rは0又は1である。)で表されるものが好ましく用いられる。前記R10としては、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基等のアルキル基;フェニル基、トリル基等のアリール基;ビニル基、アリル基等のアルケニル基が特に好ましくあげられる。
(k)成分の縮合反応触媒は任意成分であり、上記(j)成分の加水分解性シラン及び/又はその部分加水分解縮合物が、例えば、アミノキシ基、アミノ基、ケトオキシム基を有する場合には使用しなくてもよい。(k)成分の縮合反応触媒としては、例えばテトラブチルチタネート、テトライソブロピルチタネート、等の有機チタン酸エステル;ジイソプロポキシビス(アセチルアセトナート)チタン、ジイソプロポキシビス(エチルアセトアセテート)チタン等の有機チタンキレート化合物;アルミニウムトリス(アセチルアセトナート)、アルミニウムトリス(エチルアセトアセテート)等の有機アルミニウム化合物;ジルコニウムテトラ(アセチルアセトナート)、ジルコニウムテトラブチレート等の有機ジルコニウム化合物;ジブチルスズジオクトエート、ジブチルスズジラウレート、ジブチルスズジ(2-エチルヘキサノエート)等の有機スズ化合物;ナフテン酸スズ、オレイン酸スズ、ブチル酸スズ、ナフテン酸コバルト、ステアリン酸亜鉛等の有機カルボン酸の金属塩;へキシルアミン、リン酸ドデシルアミン等のアミン化合物、及びその塩;ベンジルトリエチルアンモニウムアセテート等の4級アンモニウム塩;酢酸カリウム、硝酸リチウム等のアルカリ金属の低級脂肪酸塩;ジメチルヒドロキシルアミン、ジエチルヒドロキシルアミン等のジアルキルヒドロキシルアミン:グアニジル基含有有機珪素化合物等が挙げられる。これらは1種単独でも2種以上を組み合わせても使用することができる。
有機過酸化物硬化性シリコーン組成物を含浸した基材を加熱することでラジカル反応が進行し、硬化反応が進行し、有機過酸化物シリコーン組成物は硬化する。有機過酸化物シリコーン組成物を硬化させる温度は、硬化反応が硬化性シリコーン組成物の含浸率又は含浸量に依存するため、特に限定されないが、好ましくは80℃~300℃、より好ましくは150℃~250℃である。また、必要に応じて2次キュアを行ってもよく、その際の温度条件としては好ましくは120℃以上、より好ましくは150℃~250℃である。この際のキュア時間は好ましくは10分~48時間さらに好ましくは30分~24時間である。
紫外線硬化性シリコーン組成物を含浸した基材に、紫外線を照射することで、光重合開始剤が反応し、硬化反応が進行し、紫外線硬化性シリコーン組成物は硬化する。紫外線照射条件は、硬化反応が含浸率又は含浸量に依存するため、特に限定されないが、365nmに発光波長を持った紫外線発光ダイオードを用い、照度5~500mW/cm2、好ましくは10~200mW/cm2、光量0.5~100J/cm2、好ましくは.10~50J/cm2の条件で紫外線照射を行うことで硬化させることができる。また、必要に応じて2次キュアを行ってもよく、その際の温度は好ましくは120℃以上、より好ましくは150℃~250℃である。この際のキュア時間は好ましくは10分~48時間さらに好ましくは30分~24時間である。
付加硬化性シリコーン組成物を含浸した基材を加熱することで、ヒドロシリル化反応が進行し、付加硬化性シリコーン組成物は硬化する。この際の加熱温度としては、硬化反応が含浸率又は含浸量に依存するため、特に限定されないが、好ましくは80~300℃、より好ましくは100~200℃である。また、必要に応じて2次キュアを行ってもよく、その際の温度条件としては好ましくは120℃以上、より好ましくは150℃~250℃である。この際のキュア時間は好ましくは10分~48時間さらに好ましくは30分~24時間である。
縮合硬化性シリコーン組成物を含浸した基材を加熱することで縮合反応が進行し、縮合硬化性シリコーン組成物は硬化する。縮合硬化性シリコーン組成物を硬化させる温度は、硬化反応が含浸率又は含浸量に依存するため、特に限定されないが、好ましくは80℃~300℃、より好ましくは100℃~200℃である。また、必要に応じて2次キュアを行ってもよく、その際の温度条件としては好ましくは120℃以上、より好ましくは150℃~250℃である。この際のキュア時間は好ましくは10分~48時間さらに好ましくは30分~24時間である。
加熱処理は、通常、シリコーン硬化物を常温から加熱して昇温して行き、まず400~1500℃での加熱処理を行い、さらに1500℃を超える温度域に昇温してその温度で加熱処理を行えばよい。
本発明の組成物に用いられる有機バインダとしては、例えば、メチルセルロース、カルボキシメチルセルロース、ヒドロキシエチルセルロース、ポリエチレングリコール等が挙げられる。これらの中でも、メチルセルロースが好ましい。
該有機バインダの配合量は、通常、炭化ケイ素粉末100質量部に対して1質量部以上が好ましく、2質量部以上がより好ましい。また、配合量は10質量部以下が好ましく、8質量部以下がより好ましい。
本発明の組成物には、本発明の目的、効果を害さない限り、必要に応じて前記炭化ケイ素粉末及び有機バインダ以外の他の成分、例えば可塑剤、潤滑剤等を添加してもよい。特に、組成物を焼成した時に炭素になるものであれば差し支えない。可塑剤としては特に限定されず、例えばグリセリン等が挙げられる。潤滑剤としては特に限定されず、例えば、ポリオキシエチレンアルキルエーテル、ポリオキシプロピレンアルキルエーテル等のポリオキアルキレン系化合物が挙げられる。
これらの任意成分は一般に炭化ケイ素粉末100質量部当り5質量部以下であることが望ましい。
本発明の組成物は、例えば、上記炭化ケイ素粉末と有機バインダとを乾式混合することにより混合粉末として調製することができる。必要に応じて、該混合物粉末に水又は水に可塑剤、潤滑剤等を混合した混合液体を加え、得られる混合物を湿式混合機を用いて混合してもよい。
該組成物を次工程でプレス成形に供する場合には該組成物を乾燥し水を蒸発させる。この場合、組成物を80~150℃の温度で1~10時間乾燥することが好ましい。押出成形に供する場合には、上記の湿潤組成物をそのまま坏土として用いることができ、その際の組成物中の水分含有量は固形分100質量部に対し、8~30質量部であることが好ましい。
本発明の炭化ケイ素成形体の製造方法は、
(1)上記の炭化ケイ素粉末組成物を成形して炭化ケイ素粉末成形体を得、
(2)該炭化ケイ素粉末成形体を脱脂処理し、
(3)次に、脱脂処理した炭化ケイ素粉末成形体を非酸化性雰囲気中で焼成処理する、
工程を含む。
該工程において、前記組成物を成形する。成形方法としては、例えばプレス成形及び押出成形が好ましい。
プレス成形は、例えば、乾燥した前記組成物を金型に充填して、金型を加圧することにより、所望の形状を有する成形体を得ることが出来る。プレス成形は複雑な形状の成形体を得るのに適している。
前記湿潤組成物を坏土として押出成形機に投入し、該成形機のシリンダー内のスクリューを回転させ、組成物を連続的にダイから押出した後、ダイ出口近くに配置した長さ1~2mの中空の電熱式熱風炉を通過させる。これにより、所望の形状を有する成形体を得ることが出来る。押出成形は棒状、管状又は帯状の長尺物を連続的に成形するのに適している。この場合、電熱式熱風炉の加熱温度は80~500℃、特に100~250℃が好ましく、加熱時間は1~30分間の範囲で選択すればよい。
成形した組成物は脱脂処理に供され、有機バインダの除去又は熱分解が行われる。非酸化性雰囲気中において、該成形体を400℃~1500℃の範囲、好ましくは600℃~1200℃の温度で加熱処理することにより行われる。脱脂処理の結果、成形体は無機化する。該熱処理の温度が低すぎるとバインダの熱分解・除去が起こりにくく、温度が高すぎると熱処理炉の炉材が金属やアルミナの場合には変形、溶融が起こる。
上記の脱脂処理を経た成形体を非酸化性雰囲気下でさらに高温で焼成する。これにより、一体化した炭化ケイ素成形体が生成する。この焼成過程で炭化ケイ素粉末どうしの結合が起こり炭化ケイ素の一体化が進行するものと推測される。該焼成は1500℃を超え、2200℃以下の温度で行われる。この加熱の温度は1600℃以上が好ましい。また、該加熱の温度は2200℃以下が好ましい。この焼成処理にはカーボン炉が適するが、温度が2200℃を超えると炉材の炭素基材の分解が激しい。
(炭化ケイ素粉末の製造)
材料:
(A)下式で表される一分子中にアルケニル基を含有するジメチルポリシロキサン 100質量部、
(C)下式で表されるケイ素原子に結合する水素原子を有するジオルガノポリシロキサン 33質量部、
(炭化ケイ素成形体の製造)
実施例1で得られた炭化ケイ素粉末100質量部と有機バインダとしてメチルセルロース(商品名:メトローズ、信越化学工業(株)製)3質量部とを遊星型ボールミルP-4型(登録商標、フリッチュジャパン(株)製の粉砕混合機)の容器に入れ、室温にて一時間混合を行った。得られた混合粉に水20質量部を加え、混合物をプラネタリーミキサー(登録商標、井上製作所(株)製の混合機)に投入し、室温にて一時間攪拌して坏土を得た。その後、該坏土を105℃で5時間に渡って加熱し水分を蒸発させ、粉末状の原料組成物を得た。
(炭化ケイ素成形体の製造)
実施例1で得られた炭化ケイ素粉末100質量部と有機バインダとしてメチルセルロース6質量部とを実施例2と同様にして混合した。得られた混合粉に、潤滑油(商品名:ユニルーブ、日油(株)製)3質量部、可塑剤としてグリセリン(シグマアルドリッチジャパン(株)製)1質量部、及び水20質量部を加え、これらをプラネタリーミキサー(登録商標、井上製作所(株)製の混合機)に投入し、室温にて一時間攪拌して坏土である原料組成物を得た。
得られた炭化ケイ素成形体の一部を切りかいてサンプルとし、酸素分析装置(LECO社製、商品名:TC436)を用いて、酸素分析を行ったところ、酸素の含有量は0.2質量%以下であった。元素比はSi1C1.00であった。
元素比の測定と同様にして得られたサンプルをICP発光分析に供したところ、種々の元素の含有量について表1に示す結果が得られた。「<0.1」は測定限界である0.1ppm未満であったことを意味する。
(炭化ケイ素成形体の製造)
実施例1で得られた炭化ケイ素粉末の代わりに市販の炭化ケイ素粉末(商品名:シナノランダム、信濃電気精錬(株)製)を使用した以外は、実施例2と同様にして原料組成物を調製し、これをプレス成形し、そしてCIP成形に供した後、脱脂、焼成を行ったところ、微粉末状態であり、形状は保持していなかった。
実施例3で得られた炭化ケイ素粉末の代わりに市販の炭化ケイ素粉末(商品名:シナノランダム、信濃電気精錬(株)製)を使用した以外は、実施例3と同様にして原料組成物を調製し、これを押出成形機によりパイプ状に成形し、脱脂、焼成を行ったところ、パイプの形状が保持されず微粉末状態の生成物を得た。
Claims (23)
- シリコーン硬化物を非酸化性雰囲気中で加熱分解させて得られる炭化ケイ素粉末及び有機バインダを含む炭化ケイ素粉末組成物。
- 焼結助剤を含まない請求項1に係る炭化ケイ素粉末組成物。
- 炭化ケイ素成形体製造用坏土として用いられる請求項1に係る炭化ケイ素粉末組成物。
- 前記のシリコーン硬化物が、硬化性シリコーン組成物を硬化させたものである請求項1に係る炭化ケイ素粉末組成物。
- 前記硬化性シリコーン組成物が、有機過酸化物硬化性シリコーン組成物である請求項4に係る組成物。
- 前記有機過酸化物硬化性シリコーン組成物が、
(a)ケイ素原子に結合したアルケニル基を少なくとも2個含有するオルガノポリシロキサン及び
(b)有機過酸化物、及び、
(c)任意成分として、ケイ素原子に結合した水素原子を少なくとも2個含有するオルガノハイドロジェンポリシロキサン 全硬化性シリコーン組成物中のアルケニル基1モル当たり、本(c)成分中のケイ素原子に結合した水素原子の量が0.1~2モルとなる量
を含有する有機過酸化物硬化性シリコーン組成物
である請求項5に係る組成物。 - 前記硬化性シリコーン組成物が、放射線硬化性シリコーン組成物である請求項4に係る組成物。
- 前記の放射線硬化性シリコーン組成物が、
(d)紫外線反応性オルガノポリシロキサン、及び
(e)光重合開始剤
を含有する紫外線硬化性シリコーン組成物である請求項7に係る組成物。 - 前記の紫外線反応性基が、アルケニル基、アルケニルオキシ基、アクリロイル基、メタクリロイル基、メルカプト基、エポキシ基又はヒドロシリル基である請求項9に係る組成物。
- 前記の紫外線反応性基が、アルケニル基、アルケニルオキシ基、アクリロイル基、メタクリロイル基、メルカプト基、エポキシ基又はヒドロシリル基である請求項11に係る組成物。
- (e)成分が、(d)成分100質量部に対して0.01~10質量部含有される請求項8に係る組成物。
- 前記硬化性シリコーン組成物が、付加硬化性シリコーン組成物である請求項4に係る組成物。
- 該付加硬化性シリコーン組成物が、
(f)ケイ素原子に結合したアルケニル基を少なくとも2個含有するオルガノポリシロキサン、
(g)ケイ素原子に結合した水素原子を少なくとも2個含有するオルガノハイドロジェンポリシロキサン 全硬化性シリコーン組成物中のアルケニル基1モル当たり、本(g)成分中のケイ素原子に結合した水素原子の量が0.1~5モルとなる量、及び
(h)白金族金属系触媒 有効量
を含有する組成物である請求項14に係る組成物。 - 前記硬化性シリコーン組成物が、縮合硬化性シリコーン組成物である請求項4に係る組成物。
- 該縮合硬化性シリコーン組成物が、
(i)シラノール基又はケイ素原子結合加水分解性基を少なくとも2個含有するオルガノポリシロキサン、
(j)任意成分として、加水分解性シラン、その部分加水分解縮合物又はそれらの組み合わせ、ならびに
(k)任意成分として、縮合反応触媒
を含有する組成物である請求項16に係る組成物。 - 請求項1に記載の炭化ケイ素粉末組成物を成形して炭化ケイ素粉末成形体を得、
該炭化ケイ素粉末成形体を脱脂処理し、
次に、脱脂処理した炭化ケイ素粉末成形体を非酸化性雰囲気中で焼成処理する、
工程を含む炭化ケイ素成形体の製造方法。 - 前記の炭化ケイ素粉末成形体の脱脂処理を、非酸化性雰囲気中において400~1500℃の温度で加熱処理することにより行う請求項18に係る製造方法。
- 前記の脱脂処理した炭化ケイ素粉末成形体の焼成処理を、非酸化性雰囲気中において1500℃を超え、2200℃以下の温度で加熱処理することにより行う請求項18に係る製造方法。
- 前記の炭化ケイ素粉末組成物をプレス成形法により成形する請求項18に係る炭化ケイ素成形体の製造方法。
- 前記の炭化ケイ素粉末組成物を押出成形法により成形する請求項18に係る炭化ケイ素成形体の製造方法。
- 請求項18に記載の製造方法により得られる炭化ケイ素成形体。
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US13/505,467 US20120216708A1 (en) | 2009-11-12 | 2010-11-11 | Silicon carbide powder composition and method of producing silicon carbide molded product using same |
JP2011540543A JPWO2011059041A1 (ja) | 2009-11-12 | 2010-11-11 | 炭化ケイ素粉末組成物及びそれを用いる炭化ケイ素成形体の製造方法 |
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JP2007145665A (ja) | 2005-11-29 | 2007-06-14 | Tokai Konetsu Kogyo Co Ltd | 多孔質SiC焼結体の製造方法 |
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