WO2014181657A1 - 熱伝導性シリコーン組成物及びその硬化物 - Google Patents
熱伝導性シリコーン組成物及びその硬化物 Download PDFInfo
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- WO2014181657A1 WO2014181657A1 PCT/JP2014/060943 JP2014060943W WO2014181657A1 WO 2014181657 A1 WO2014181657 A1 WO 2014181657A1 JP 2014060943 W JP2014060943 W JP 2014060943W WO 2014181657 A1 WO2014181657 A1 WO 2014181657A1
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- 239000000203 mixture Substances 0.000 title claims abstract description 80
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 73
- -1 methacryloyl group Chemical group 0.000 claims abstract description 41
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 claims abstract description 30
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 28
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011231 conductive filler Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims abstract description 5
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 5
- 125000005369 trialkoxysilyl group Chemical group 0.000 claims abstract description 5
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- 125000000217 alkyl group Chemical group 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 150000001282 organosilanes Chemical class 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 2
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 2
- 150000002903 organophosphorus compounds Chemical class 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 4
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 15
- 239000002245 particle Substances 0.000 description 13
- 150000002430 hydrocarbons Chemical group 0.000 description 12
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 11
- 238000001723 curing Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 9
- 238000013329 compounding Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 8
- 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 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 125000000962 organic group Chemical group 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 239000004205 dimethyl polysiloxane Substances 0.000 description 5
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000003710 aryl alkyl group Chemical group 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 150000001721 carbon Chemical group 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910021485 fumed silica Inorganic materials 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 125000006165 cyclic alkyl group Chemical group 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 2
- 238000004438 BET method Methods 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- 125000003944 tolyl group Chemical group 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- 125000004973 1-butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000006039 1-hexenyl group Chemical group 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- DSVRVHYFPPQFTI-UHFFFAOYSA-N bis(ethenyl)-methyl-trimethylsilyloxysilane;platinum Chemical compound [Pt].C[Si](C)(C)O[Si](C)(C=C)C=C DSVRVHYFPPQFTI-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 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
- 125000005998 bromoethyl group Chemical group 0.000 description 1
- OTJZCIYGRUNXTP-UHFFFAOYSA-N but-3-yn-1-ol Chemical compound OCCC#C OTJZCIYGRUNXTP-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 150000008282 halocarbons Chemical group 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 125000002801 octanoyl group Chemical group C(CCCCCCC)(=O)* 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000005429 oxyalkyl group Chemical group 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 150000003058 platinum compounds Chemical class 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011995 wilkinson's catalyst Substances 0.000 description 1
- UTODFRQBVUVYOB-UHFFFAOYSA-P wilkinson's catalyst Chemical compound [Cl-].C1=CC=CC=C1P(C=1C=CC=CC=1)(C=1C=CC=CC=1)[Rh+](P(C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)P(C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 UTODFRQBVUVYOB-UHFFFAOYSA-P 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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- H01L23/00—Details of semiconductor or other solid state devices
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
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Definitions
- the present invention relates to a thermally conductive silicone composition and a cured product thereof that have an adhesive force that can follow an IC package with large warpage and that does not lose its softness even when left at high temperatures.
- the structure of a semiconductor device which is currently mainstream is composed of an IC package and a heat radiator for releasing heat from the surface of the IC package. Then, the heat conductive silicone composition is poured between the IC package (heat generating element) and the heat radiating element to heat and cure, thereby filling the micro unevenness existing on the surface of the IC package or the heat radiating element, A radiator is connected (Patent Document 1).
- the thermally conductive silicone composition is very useful because it is soft and hard, and is difficult to cause stress on the IC package and is difficult to cause a pumping out phenomenon.
- Patent Document 2 discloses a thermally conductive silicone composition which has a high boiling point solvent and achieves high thermal conductivity.
- Patent Document 3 describes a method of adding silicone oil to a thermally conductive silicone composition in order to obtain a cured product having high thermal conductivity and softness.
- the present inventors tried to add an adhesion aid to the composition in order to solve the above problems.
- the thermally conductive silicone composition to which the adhesion aid is added is left at a high temperature, the softness of the thermally conductive silicone composition is lost, resulting in stress on the IC package, resulting in the worst failure. A problem arises.
- an object of the present invention is to provide a thermally conductive silicone composition that gives a cured product that does not give stress to an IC package even when left at high temperatures.
- the present inventors When the present inventors poured a liquid heat conductive silicone grease composition between a heating element and a heat dissipation body and cured it, the obtained cured product has adhesiveness, so that even if the substrate warps greatly, it follows it. In addition, even if left at high temperature, the initial flexibility was not lost, so it was considered that the IC package was not stressed.
- the present inventors have added an organohydrogenpolysiloxane having a structure represented by the following formula (3) to the heat conductive silicone composition, The present inventors have found that a cured product that can be adhered to a substrate without losing the initial flexibility even when left at high temperature and can maintain reliability can be obtained.
- the present invention is A silicone composition having a viscosity of 10 to 1,000 Pa ⁇ s at 25 ° C., (A) 100 parts by mass of an organopolysiloxane having at least two alkenyl groups in one molecule and a kinematic viscosity at 25 ° C. of 10 to 100,000 mm 2 / s, (B) Organohydrogenpolysiloxane represented by the following general formula (1) (In the formula (1), n and m are positive integers satisfying 10 ⁇ n + m ⁇ 100 and 0.01 ⁇ n / (n + m) ⁇ 0.3, and R 1 are independently of each other.
- R 4 is a group having a group selected from an epoxy group, an acryloyl group, a methacryloyl group, an ether group, and a trialkoxysilyl group, which is bonded to a silicon atom via a carbon atom or a carbon atom and an oxygen atom.
- R 3 s are independently of each other an alkyl group having 1 to 6 carbon atoms.
- a value, [Total number of Si—H groups derived from component (C) and (D)] / [Number of Si—H groups derived from component (B)] is a value in the range of 1 to 10
- [( C) Silicone composition, wherein the number of Si—H groups derived from component] / [number of Si—H groups derived from component (D)] is a value in the range of 1 to 10, and the composition Provided is a semiconductor device provided with a cured product obtained by curing.
- the thermally conductive silicone composition of the present invention has better adhesion to the substrate than the existing thermally conductive silicone composition, so that it can follow the cured product without peeling even in an IC package with large warpage. In addition, it is possible to maintain flexibility even when stored at high temperatures. Therefore, a highly reliable semiconductor device can be provided.
- the organopolysiloxane (A) component is an organopolysiloxane having at least two alkenyl groups bonded to silicon atoms in one molecule.
- the organopolysiloxane has a kinematic viscosity at 25 ° C. of 10 to 100,000 mm 2 / s, preferably 100 to 50,000 mm 2 / s.
- the kinematic viscosity is lower than the above lower limit, the storage stability of the composition is deteriorated.
- the extensibility of the composition obtained when dynamic viscosity becomes larger than the said upper limit is worsened, it is not preferable.
- the organopolysiloxane in the present invention may be any organopolysiloxane that has at least two alkenyl groups bonded to a silicon atom in one molecule and has the above viscosity, and a known organopolysiloxane may be used.
- the organopolysiloxane may be linear or branched, and may be a mixture of two or more having different viscosities.
- the kinematic viscosity of the organopolysiloxane is a value at 25 ° C. measured with an Ostwald viscometer.
- the alkenyl group has 2 to 10 carbon atoms, preferably 2 to 8 carbon atoms, and examples thereof include a vinyl group, an allyl group, a 1-butenyl group, and a 1-hexenyl group. Among these, a vinyl group is preferable from the viewpoint of ease of synthesis and cost.
- the alkenyl group may be present at either the terminal or the middle of the molecular chain of the organopolysiloxane, but in terms of flexibility, it is preferably present only at both terminals.
- the organic group capable of bonding to the silicon atom other than the alkenyl group is preferably a monovalent hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms.
- the monovalent hydrocarbon group include an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group and a dodecyl group, an aryl group such as a phenyl group, a 2-phenylethyl group, and a 2-phenylpropyl group.
- Aralkyl groups such as groups, fluorocarbon groups, bromoethyl groups, chloromethyl groups, 3,3,3-trifluoro in which some or all of the hydrogen atoms of these hydrocarbon groups are substituted with halogen atoms such as chlorine, fluorine, bromine, etc.
- halogen-substituted monovalent hydrocarbon groups such as propyl group.
- 90% or more is preferably a methyl group from the viewpoint of ease of synthesis and cost.
- dimethylpolysiloxane having both ends blocked with dimethylvinylsilyl groups.
- the organohydrogenpolysiloxane (B) component is an organohydrogenpolysiloxane represented by the following general formula (1).
- n and m satisfy 10 ⁇ n + m ⁇ 100, preferably 20 ⁇ n + m ⁇ 80, and n / (n + m) is a value in the range of 0.01 to 0.3, preferably 0 A positive integer with a value in the range of .05 to 0.2.
- the value of n / (n + m) is smaller than the lower limit, the composition cannot be reticulated by crosslinking.
- n / (n + m) is larger than the above upper limit value, the residual amount of unreacted Si—H groups increases after the initial curing, and excessive crosslinking reaction proceeds with time due to moisture and the like, and the cured product is flexible This is not preferable because the property is lost.
- R 1 is independently an alkyl group having 1 to 6 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group. Among them, 90% or more is preferably a methyl group from the viewpoint of ease of synthesis and cost.
- organohydrogenpolysiloxane represented by the above formula (1) examples include the following compounds.
- Organohydrogenpolysiloxane Component (C) is an organohydrogenpolysiloxane represented by the following general formula (2).
- p is a positive integer of 5 to 1000, preferably a positive integer of 10 to 100. If the value of p is smaller than the above lower limit value, the organohydrogenpolysiloxane tends to be a volatile component, so it is not preferable to use it for an electronic component. On the other hand, if the value of p is larger than the above upper limit value, the viscosity of the organohydrogenpolysiloxane becomes high and the handling becomes difficult.
- R 2 is independently an alkyl group having 1 to 6 carbon atoms.
- the alkyl group include a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group. Of these, 90% or more is preferably a methyl group from the viewpoint of ease of synthesis and cost.
- organohydrogenpolysiloxane represented by the above formula (2) examples include the following compounds.
- the component (D) is an organohydrogenpolysiloxane represented by the following general formula (3).
- k is a positive integer of 2 to 10, preferably a positive integer of 2 to 6, more preferably a positive integer of 2 to 4, and particularly preferably 2.
- R is independently a hydrogen atom or R 4 , provided that two of the groups represented by R are hydrogen atoms.
- R 4 is a group having a group selected from an epoxy group, an acryloyl group, a methacryloyl group, an ether group, and a trialkoxysilyl group, which is bonded to a silicon atom via a carbon atom or a carbon atom and an oxygen atom. is there.
- the organohydrogenpolysiloxane has only one hydrogen atom bonded to a silicon atom, the organohydrogenpolysiloxane can react with the alkenyl group in the component (A) to form a crosslinked structure. Disappear. Moreover, it is not preferable that the organohydrogenpolysiloxane has 3 or more hydrogen atoms bonded to silicon atoms because the obtained cured product becomes hard and reliability cannot be ensured.
- R 3 is independently an alkyl group having 1 to 6 carbon atoms.
- R 3 include a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group. Among them, 90% or more is preferably a methyl group from the viewpoint of ease of synthesis and cost.
- R 4 examples include epoxy group-containing organic groups such as 3-glycidoxypropyl group, 3-glycidoxypropylmethyl group, 3-glycidoxyethyl group, and 3,4-epoxycyclohexylethyl, methacryloxy (Meth) acryloyl group-containing organic groups such as propyl group, methacryloxypropylmethyl group, methacryloxyethyl group, acryloxypropyl group, acryloxypropylmethyl group, acryloxyethyl group, methoxysilylpropyl group, methoxysilylpropylmethyl group
- Trialkoxysilyl group-containing organic groups such as methoxysilylethyl group, triethoxysilylpropyl group, triethoxysilylpropylmethyl group, and triethoxysilylethyl group, and oxyalkyl groups, alkyloxyalkyl groups, perfluorooxyalkyl groups , Par And ether-containing organic groups
- organohydrogenpolysiloxanes represented by the above formula (3) a compound represented by the following formula (4) is particularly preferable.
- R 3 and R 4 are as described above
- organohydrogensiloxane represented by the above formula (4) examples include the following compounds.
- the blending amount of the component (B), the component (C), and the component (D) is derived from the component (B), the component (C), and the component (D) with respect to the number of alkenyl groups derived from the component (A).
- the ratio of the number of Si—H groups that is, [the total number of Si—H groups derived from the (B) component, the (C) component, and the (D) component] / [the number of alkenyl groups derived from the (A) component]
- the amount is a value in the range of 0.6 to 1.5, preferably a value in the range of 0.7 to 1.4.
- the cured product cannot take a sufficient network structure, and the necessary hardness cannot be obtained after curing. Also, if the number of Si—H groups is larger than the above upper limit, unreacted Si—H groups remain in the cured product, and an excessive crosslinking reaction occurs due to moisture or the like, so that the cured product becomes hard over time. This is not preferable because flexibility is lost.
- the component (B), the component (C), and the component (D) include [the total number of Si—H groups derived from the component (C) and the component (D)] / [Si—H derived from the component (B).
- the number of groups] is a value in the range of 1 to 10, preferably in the range of 1.2 to 5, and [the total number of Si—H groups derived from the component (C)] / [(D
- the number of Si—H groups derived from the component] is 1 to 10, preferably 1.2 to 5.
- the component (D) when the blending ratio of the component (C) to the component (D) is smaller than the above lower limit value, the component (D) has a group in the side chain that is more easily hydrolyzed than the component (C). Heat resistance may be inferior, which is not preferable. Further, when the blending ratio of the component (C) to the component (D) is larger than the above upper limit, the effect of the present invention, that is, the effect of imparting flexibility and adhesiveness that can withstand high temperature conditions to the cured product is sufficiently obtained. I can't get it.
- a heat conductive filler (E) component is a filler mix
- the heat conductive filler a conventionally known heat conductive filler can be used.
- the heat conductive fillers may be used alone or in combination of two or more.
- the thermally conductive filler preferably has a thermal conductivity of 10 W / m ° C. or higher. A thermal conductivity of less than 10 W / m ° C. is not preferable because the thermal conductivity of the silicone composition itself becomes small.
- the average particle size of the thermally conductive filler is 0.1 to 100 ⁇ m, preferably 0.5 to 90 ⁇ m. If the average particle size is smaller than the lower limit, it does not become a grease and has poor extensibility. Further, if the average particle size is larger than the above upper limit value, the uniformity of the heat dissipating grease becomes poor, which is not preferable.
- the average particle diameter can be measured as a volume average value D 50 (that is, a particle diameter or a median diameter when the cumulative volume is 50%) in particle size distribution measurement by a laser light diffraction method. Further, the shape of the filler may be indefinite, spherical or any shape.
- the amount of the thermally conductive filler is in the range of 400 to 3000 parts by mass, preferably in the range of 450 to 2500 parts by mass, with respect to 100 parts by mass of the component (A). If the amount of the heat conductive filler is less than the above lower limit value, the desired heat conductivity cannot be imparted to the cured product. On the other hand, if the amount of the heat conductive filler exceeds the above upper limit, the composition may not be in the form of grease and may have poor extensibility.
- the component is a platinum group metal catalyst.
- the catalyst may be any catalyst that can promote the addition reaction between the alkenyl group in component (A) and the Si—H group in component (B), component (C), and component (D).
- a conventionally known catalyst may be used. Among these, a catalyst selected from platinum and a platinum compound is preferable.
- the catalyst examples include platinum group metals such as platinum (including platinum black), rhodium and palladium, H 2 PtCl 4 ⁇ nH 2 O, H 2 PtCl 6 ⁇ nH 2 O, NaHPtCl 6 ⁇ nH 2 O, KHPtCl 6 ⁇ nH 2 O, Na 2 PtCl 6 ⁇ nH 2 O, K 2 PtCl 4 ⁇ nH 2 O, PtCl 4 ⁇ nH 2 O, PtCl 2 , Na 2 HPtCl 4 ⁇ nH 2 O (where n in the formula Is an integer of 0 to 6, preferably 0 or 6.), such as platinum chloride, chloroplatinic acid and chloroplatinate, alcohol-modified chloroplatinic acid, chloroplatinic acid and olefin complex, platinum black, A platinum group metal such as palladium supported on a carrier such as alumina, silica or carbon, rhodium-olefin
- the blending amount of the component (F) is an effective amount as a catalyst, and may be any amount as long as the reaction of the component (A) with the components (B), (C) and (D) can proceed. What is necessary is just to adjust suitably according to a cure rate.
- the amount is preferably in the range of 0.1 to 500 ppm, preferably 1 to 400 ppm, based on the weight of the component (A) in terms of mass in terms of platinum group metal atoms. This is because if the amount of the catalyst is smaller than the lower limit, there is no effect as a catalyst, and even if the amount exceeds the upper limit, no improvement in the curing rate can be expected.
- reaction control agent A component is a reaction control agent.
- the reaction control agent is blended in order to suppress the progress of the hydrosilylation reaction at room temperature and extend the shelf life and pot life.
- Any reaction control agent may be used as long as it can suppress the catalytic activity of the platinum group metal catalyst (F), and a known reaction control agent can be used.
- acetylene compounds such as 1-ethynyl-1-cyclohexanol and 3-butyn-1-ol, various nitrogen compounds, organic phosphorus compounds, oxime compounds, and organic chloro compounds can be used. Among them, acetylene alcohol that is not corrosive to metals is preferable.
- the blending amount of the component (G) is 0.01 to 1 part by mass, preferably 0.05 to 0.9 part by mass with respect to 100 parts by mass of the component (A). If the blending amount of the reaction control agent is smaller than the lower limit, sufficient shelf life and pot life may not be obtained. Moreover, since the sclerosis
- the reaction control agent can be used after being diluted with an organic solvent such as toluene, xylene, and isopropyl alcohol in order to improve dispersibility in the silicone resin.
- composition of the present invention further comprises the following formula (5): R 5 a R 6 b Si (OR 7 ) 4-ab (5)
- the organosilane represented by these can be mix
- R 5 is independently a monovalent hydrocarbon group having 6 to 15 carbon atoms.
- the monovalent hydrocarbon group include alkyl groups such as hexyl group, octyl group, nonyl group, decyl group, dodecyl group, and tetradecyl group. If the carbon number of R 5 is smaller than the lower limit, the wettability with the filler is not sufficient, and if it is larger than the upper limit, the organosilane is solidified at room temperature. Low temperature characteristics are degraded.
- a is an integer of 1 to 3
- b is an integer of 0 to 2
- a + b is an integer of 1 to 3.
- a is preferably 1, and b is preferably 0 or 1.
- R 6 independently of each other is a saturated or unsaturated monovalent hydrocarbon group having 1 to 8 carbon atoms.
- the monovalent hydrocarbon group include alkyl groups such as methyl group, ethyl group, propyl group, hexyl group and octyl group, cycloalkyl groups such as cyclopentyl group and cyclohexyl group, and alkenyl groups such as vinyl group and allyl group.
- Aryl groups such as phenyl group and tolyl group, aralkyl groups such as 2-phenylethyl group and 2-methyl-2-phenylethyl group, 3,3,3-trifluoropropyl group, 2- (nanofluorobutyl) ethyl And halogenated hydrocarbon groups such as 2- (heptadecafluorooctyl) ethyl group and p-chlorophenyl group. Of these, a methyl group and an ethyl group are preferable.
- R 7 is each independently a monovalent hydrocarbon group having 1 to 6 carbon atoms.
- the monovalent hydrocarbon group include alkyl groups such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group. These may be one kind or a mixture of two or more kinds. In particular, a methyl group and an ethyl group are preferable.
- organosilane represented by the above formula (5) examples include the compounds shown below.
- C 6 H 13 Si (OCH 3 ) 3, C 10 H 21 Si (OCH 3 ) 3 , C 12 H 25 Si (OCH 3 ) 3 , C 12 H 25 Si (OC 2 H 5 ) 3 , C 10 H 21 Si (CH 3 ) (OCH 3 ) 2 , C 10 H 21 Si (C 6 H 5 ) (OCH 3 ) 2 , C 10 H 21 Si (CH 3 ) (OC 2 H 5) 2, C 10 H 21 Si (CH CH 2) (OCH 3) 2, C 10 H 21 Si (CH 2 CH 2 CF 3) (OCH 3) 2
- the compounding amount of the organosilane is 0.01 to 30 parts by mass, preferably 10 to 25 parts by mass with respect to 100 parts by mass of the component (A).
- the compounding amount of the organosilane is less than the above lower limit value, there is a possibility that the wettability cannot be sufficiently given to the composition.
- composition of the present invention further comprises the following formula (6):
- the organosilane represented by these can be mix
- R 8 independently of each other is an unsubstituted or substituted monovalent hydrocarbon group having 1 to 18 carbon atoms, preferably 1 to 10 carbon atoms.
- the monovalent hydrocarbon group include a linear alkyl group, a branched alkyl group, a cyclic alkyl group, an alkenyl group, an aryl group, an aralkyl group, and an alkyl halide.
- the linear alkyl group include a methyl group, an ethyl group, a propyl group, a hexyl group, and an octyl group.
- Examples of the branched alkyl group include isopropyl group, isobutyl group, tert-butyl group, 2-ethylhexyl group and the like.
- Examples of the cyclic alkyl group include a cyclopentyl group and a cyclohexyl group.
- Examples of the alkenyl group include a vinyl group and an allyl group.
- Examples of the aryl group include a phenyl group and a tolyl group.
- Examples of the aralkyl group include 2-phenylethyl group and 2-methyl-2-phenylethyl group.
- halogenated alkyl group examples include 3,3,3-trifluoropropyl group, 2- (nonafluorobutyl) ethyl group, 2- (heptadecafluorooctyl) ethyl group and the like.
- R 8 is preferably a methyl group or a phenyl group.
- R 9 independently of one another is an alkyl group, alkoxyalkyl group, alkenyl group, or acyl group having 1 to 5 carbon atoms.
- the alkyl group include a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, and those exemplified above for R 8 can be mentioned.
- the alkoxyalkyl group include a methoxyethyl group and a methoxypropyl group.
- the acyl group include an acetyl group and an octanoyl group.
- R 9 is preferably an alkyl group, and particularly preferably a methyl group or an ethyl group.
- q is an integer of 5 to 100, preferably an integer of 10 to 80.
- c is an integer of 1 to 3, preferably 3.
- organopolysiloxane represented by the above formula (6) examples include the following compounds.
- the compounding amount of the organopolysiloxane is preferably 0.01 to 200 parts by mass, more preferably 0.01 to 150 parts by mass with respect to 100 parts by mass of the component (A). If the amount of the organopolysiloxane is less than the above lower limit, sufficient wettability may not be imparted. Moreover, even if it makes the compounding quantity more than the said upper limit, the effect which provides wettability will not increase and it is uneconomical.
- the composition of the present invention may further contain (J) fine silica powder.
- silica fine powder By blending silica fine powder, shape maintaining property can be imparted to the composition.
- silica fine powder conventionally known silica fine powder added to the silicone grease composition may be used, and among them, surface-treated fumed silica is preferably used. The surface treatment improves the dispersibility with respect to the components (A) to (D), so that it can be uniformly dispersed in the composition.
- the shape of the cured product obtained by curing the composition is maintained by the interaction between the surface-treated fumed silica or the interaction between the surface-treated fumed silica and the components (A) to (D). Sex can be imparted.
- chlorosilane, silazane, siloxane and the like are effective.
- Specific examples of the surface treatment agent include methyltrichlorosilane, dimethyldichlorosilane, trimethylchlorosilane, hexamethyldisilazane, octamethylcyclotetrasiloxane, ⁇ , ⁇ -trimethylsilyldimethylpolysiloxane, and the like.
- the silica fine powder preferably has a specific surface area (BET method) of 50 m 2 / g or more, particularly preferably 100 m 2 / g or more.
- a specific surface area (BET method) of the silica fine powder is preferably 500 m 2 / g or less, particularly 300 m 2 / g or less because the shape maintainability is high.
- the compounding amount of the silica fine powder is in the range of 0.1 to 100 parts by weight, preferably 1 to 80 parts by weight, more preferably 1 to 60 parts by weight with respect to 100 parts by weight of component (A).
- Part range If the blending amount is less than the lower limit, it may not be possible to maintain the shape maintainability of the cured product. Moreover, when there are more compounding quantities than the said upper limit, since the hardened
- additives known as additives for silicone grease may be added as long as the object of the present invention is not impaired.
- the additive include hindered phenol antioxidants, reinforcing properties such as calcium carbonate, non-reinforcing fillers, and polyethers as thixotropy improvers.
- colorants such as a pigment and dye, as needed.
- the method for producing the silicone composition of the present invention is not particularly limited, and may be a conventionally known method.
- (A) component and (E) component are taken into a gate mixer (Inoue Seisakusho Co., Ltd., trade name: Planetary Mixer), and (H) component and (I) component are added as necessary, at 70 ° C. Mix by heating for 1 hour. After cooling the mixture, component (G) is added and mixed at room temperature for 15 minutes. Thereafter, the component (F) is further added and mixed at room temperature for 15 minutes so as to be uniform. Then, (B) component, (C) component, and (D) component are added, and it obtains by mixing for 15 minutes at room temperature.
- a gate mixer Inoue Seisakusho Co., Ltd., trade name: Planetary Mixer
- the silicone composition of the present invention has a viscosity at 25 ° C. of 10 to 1,000 Pa ⁇ s, preferably 50 to 300 Pa ⁇ s.
- the silicone composition of the present invention is packed in a commercially available syringe and applied to the surface of an IC package or a heat radiator. For this reason, if the viscosity is lower than the lower limit, liquid dripping occurs during application, which is not preferable. On the other hand, if the viscosity is higher than the above upper limit value, the coating efficiency is deteriorated, which is not preferable.
- the viscosity of the composition is a value measured at 25 ° C. using a Malcolm viscometer (type PC-1T).
- the silicone composition of the present invention has a hardness measured by Asker C (for low hardness) manufactured by Kobunshi Keiki Co., Ltd., by curing the composition. Preferably it has 60 or less.
- the curing conditions for the silicone composition of the present invention are not particularly limited, and the same conditions as those for conventionally known silicone gels can be used.
- the silicone composition of the present invention can also be cured by heat generated from the IC package after being dispensed. Further, after dispensing, it may be positively heated and cured.
- the heat curing conditions are preferably 0.1 to 3 hours, more preferably 0.5 to 2 hours at a temperature in the range of 80 to 200 ° C., more preferably 90 to 180 ° C.
- the silicone composition of the present invention can be satisfactorily adhered to the IC package after curing, can maintain a stable flexibility over time, and does not peel off from the substrate. Further, the cured product obtained by curing the silicone composition of the present invention can follow the adhesiveness even in an IC package having a much larger warp than the cured product of the existing silicone grease composition, and Flexibility can be maintained even when stored at high temperatures. Therefore, a highly reliable semiconductor device can be provided.
- B-1 Organohydrogenpolysiloxane represented by the following formula
- B-2 Organohydrogenpolysiloxane represented by the following formula
- the thermal conductive fillers shown in the following (1) to (6) were mixed so as to have the composition described in Table 1 below, and a 5 liter gate mixer (Inoue Manufacturing Co., Ltd.). (Product name: 5 liter planetary mixer) and mixed for 15 minutes at room temperature to obtain E-1 to E-4.
- Table 1 shows the average particle diameters of E-1 to E-4.
- Aluminum powder with an average particle size of 15 ⁇ m (2) Alumina powder with an average particle size of 70 ⁇ m (3) Alumina powder with an average particle size of 40 ⁇ m (4) Alumina powder with an average particle size of 10 ⁇ m (5) An average particle size of 1.0 ⁇ m Alumina powder (6) Zinc oxide powder with average particle size of 1.0 ⁇ m
- Component (G) 50% toluene solution of 1-ethynyl-1-cyclohexanol
- Component (J) fumed silica having a BET specific surface area of 120 m 2 / g and hydrophobized surface treatment with dimethyldichlorosilane
- silicone composition (A) component is put into a 5 liter gate mixer (trade name: 5 liter planetary mixer, manufactured by Inoue Seisakusho Co., Ltd.), (E) a thermally conductive filler, and (H) an organo if necessary Silane and (I) organopolysiloxane were added in the amounts shown in Table 2 or Table 3 below, and the mixture was heated and mixed at 70 ° C. for 1 hour.
- (G) the reaction control agent was added in the blending amounts shown in Table 2 or Table 3, and mixed at room temperature for 15 minutes.
- the catalyst was further added at the blending amount shown in Table 2 or Table 3, and mixed at room temperature for 15 minutes so as to be uniform.
- the component (B), the component (C), and the component (D) were added in the blending amounts shown in Table 2 or Table 3, and mixed at room temperature for 15 minutes so as to be uniform.
- the thermal conductivity of the thermal conductivity silicone composition at 25 ° C. was measured using a hot disk method thermophysical property measuring apparatus TPA-501 manufactured by Kyoto Electronics Industry Co., Ltd.
- the absolute viscosity at 25 ° C. was measured using a viscosity Malcolm viscometer (type PC-1T).
- the hardness of the cured product was measured using Asker C (for low hardness) manufactured by Flexible Polymer Instruments Co., Ltd., and the flexibility over time was evaluated. Specifically, the silicone composition is poured into a 10 mm thick mold, heated at 150 ° C. for 1 hour to form a 10 mm thick sheet-like rubber molded product, and then returned to 25 ° C., and the initial hardness of the cured product is measured. did. Then, after leaving it to stand at a temperature of 150 ° C. for 1000 hours, the temperature was returned to 25 ° C. and the hardness of the cured product was measured.
- the cured product obtained from the thermally conductive silicone composition of the present invention has better adhesion to the substrate than the existing thermally conductive silicone composition, the cured product can be peeled off even in an IC package with large warpage. And can maintain flexibility even when stored at high temperatures. Therefore, a highly reliable semiconductor device can be provided.
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Abstract
Description
25℃で粘度10~1,000Pa・sを有するシリコーン組成物であって、
(A)1分子中に少なくとも2個のアルケニル基を有し、25℃での動粘度10~100,000mm2/sを有するオルガノポリシロキサン 100質量部、
(B)下記一般式(1)で示されるオルガノハイドロジェンポリシロキサン
(C)下記一般式(2)で示されるオルガノハイドロジェンポリシロキサン
(D)下記一般式(3)で示されるオルガノハイドロジェンポリシロキサン
(E)熱伝導性充填材 400~3,000質量部
(F)白金族金属系触媒 触媒量、及び
(G)反応制御剤 0.01~1質量部
を含有し、
上記(B)成分、(C)成分、及び(D)成分の配合量が、
[(B)成分、(C)成分、及び(D)成分由来のSi-H基の合計個数]/[(A)成分由来のアルケニル基の個数]が0.6~1.5の範囲にある値であり、
[(C)成分及び(D)成分由来のSi-H基の合計個数]/[(B)成分由来のSi-H基の個数]が1~10の範囲にある値であり、かつ
[(C)成分由来のSi-H基の個数]/[(D)成分由来のSi-H基の個数]が1~10の範囲にある値である量である、シリコーン組成物、及び該組成物を硬化して得られた硬化物を備える半導体装置を提供する。
(A)成分は、ケイ素原子に結合したアルケニル基を1分子中に少なくとも2個有するオルガノポリシロキサンである。該オルガノポリシロキサンは、25℃における動粘度10~100,000mm2/s、好ましくは100~50,000mm2/sを有するのが良い。動粘度が上記下限値より低いと組成物の保存安定性が悪くなる。また、動粘度が上記上限値より大きくなると得られる組成物の伸展性が悪くなるため好ましくない。本発明における該オルガノポリシロキサンは、ケイ素原子に結合したアルケニル基を1分子中に少なくとも2個有し、且つ上記粘度を有するものであればよく、公知のオルガノポリシロキサンを使用すればよい。該オルガノポリシロキサンは、直鎖状でも分岐状でもよく、また異なる粘度を有する2種以上の混合物でも良い。本発明においてオルガノポリシロキサンの動粘度はオストワルド粘度計により測定した25℃での値である。
(E)成分は、本発明の組成物に熱伝導性を付与するために配合する充填材である。該熱伝導性充填材は、従来公知の熱伝導性充填材を使用することができる。例えば、アルミニウム粉末、銅粉末、銀粉末、ニッケル粉末、金粉末、アルミナ粉末、酸化亜鉛粉末、酸化マグネシム粉末、窒化アルミニム粉末、窒化ホウ素粉末、窒化珪素粉末、ダイヤモンド粉末、カーボン粉末、インジウム、及びガリウムなどが挙げられる。上記熱伝導性充填材は1種単独であるいは2種以上を混ぜ合わせて使用してもよい。また、本発明において熱伝導性充填材は熱伝導率10W/m℃以上を有するのが好ましい。熱伝導率が10W/m℃より小さいと、シリコーン組成物の熱伝導率そのものが小さくなるため好ましくない。
(F)成分は白金族金属系触媒である。触媒は、(A)成分中のアルケニル基と(B)成分、(C)成分、及び(D)成分中のSi-H基との間の付加反応を促進することができるものであればよく、従来公知の触媒を使用すればよい。中でも、白金および白金化合物から選ばれる触媒が好ましい。該触媒としては、例えば、白金(白金黒を含む)、ロジウム、パラジウム等の白金族金属単体、H2PtCl4・nH2O、H2PtCl6・nH2O、NaHPtCl6・nH2O、KHPtCl6・nH2O、Na2PtCl6・nH2O、K2PtCl4・nH2O、PtCl4・nH2O、PtCl2、Na2HPtCl4・nH2O(但し、式中のnは0~6の整数であり、好ましくは0又は6である。)等の塩化白金、塩化白金酸及び塩化白金酸塩、アルコール変性塩化白金酸、塩化白金酸とオレフィンとのコンプレックス、白金黒、パラジウム等の白金族金属を、アルミナ、シリカ、カーボン等の担体に担持させたもの、ロジウム-オレフィンコンプレックス、クロロトリス(トリフェニルフォスフィン)ロジウム(ウィルキンソン触媒)、塩化白金、塩化白金酸又は塩化白金酸塩とビニル基含有シロキサンとのコンプレックス等が挙げられる。これらの白金族金属系触媒は、単独で使用しても2種以上を組み合わせて使用しても良い。
(G)成分は反応制御剤である。該反応制御剤は、室温でのヒドロシリル化反応の進行を抑え、シェルフライフ、ポットライフを延長させるために配合する。反応制御剤としては、上記(F)白金族金属系触媒の触媒活性を抑制することができるものであればよく、公知の反応制御剤を使用することができる。例えば、1-エチニル-1-シクロヘキサノール、3-ブチン-1-オール等のアセチレン化合物、各種窒素化合物、有機りん化合物、オキシム化合物、及び有機クロロ化合物等が使用できる。その中でも、金属への腐食性の無いアセチレンアルコールが好ましい。
本発明の組成物は、さらに下記式(5)
R5 aR6 bSi(OR7)4-a-b (5)
で表されるオルガノシランを配合することができる。これにより、充填材とシリコーン成分との濡れ性を向上させることができる。
C6H13Si(OCH3)3、
C10H21Si(OCH3)3、
C12H25Si(OCH3)3、
C12H25Si(OC2H5)3、
C10H21Si(CH3)(OCH3)2、
C10H21Si(C6H5)(OCH3)2、
C10H21Si(CH3)(OC2H5)2、
C10H21Si(CH=CH2)(OCH3)2、
C10H21Si(CH2CH2CF3)(OCH3)2
本発明の組成物は、さらに(J)シリカ微粉末を配合することができる。シリカ微粉末を配合することで、形状維持性を組成物に付与することができる。シリカ微粉末は、シリコーングリース組成物に添加される従来公知のシリカ微粉末を使用すればよく、中でも表面処理されている煙霧質シリカが好適に用いられる。表面処理することにより(A)~(D)成分に対する分散性が向上するため、組成物中に均一に分散することが可能となる。また、表面処理された煙霧質シリカ同士の相互作用、または表面処理された煙霧質シリカと(A)~(D)成分との相互作用により、組成物を硬化して得られる硬化物に形状維持性を付与することができる。
・A-1:両末端がジメチルビニルシリル基で封鎖され、25℃における動粘度が600mm2/sのジメチルポリシロキサン
・A-2:両末端がジメチルビニルシリル基で封鎖され、25℃における動粘度が30000mm2/sのジメチルポリシロキサン
下記(1)~(6)に示す熱伝導性充填材を下記表1に記載する組成となるように混合し、5リットルゲートミキサー(井上製作所(株)製、商品名:5リットルプラネタリミキサー)を用いて室温にて15分間混合してE-1~E-4を得た。E-1~E-4の各平均粒径を表1に記載する。
(1)平均粒径15μmのアルミニウム粉末
(2)平均粒径70μmのアルミナ粉末
(3)平均粒径40μmのアルミナ粉末
(4)平均粒径10μmのアルミナ粉末
(5)平均粒径1.0μmのアルミナ粉末
(6)平均粒径1.0μmの酸化亜鉛粉末
C10H21Si(OCH3)3
5リットルゲートミキサー(井上製作所(株)製、商品名:5リットルプラネタリミキサー)に(A)成分を入れ、(E)熱伝導性充填材、必要に応じて(H)オルガノシラン、及び(I)オルガノポリシロキサンを下記表2または表3に示す配合量で加え、70℃で1時間加熱混合した。次に、(G)反応制御剤を表2または表3に示す配合量で加え、室温にて15分間混合した。その後、さらに(F)触媒を表2または表3に示す配合量で加え、均一になるように室温にて15分間混合した。最後に、(B)成分、(C)成分、及び(D)成分を、表2または表3に示す配合量で加え、均一になるように室温にて15分間混合した。
シリコーン組成物の25℃における熱伝導率を、京都電子工業株式会社製ホットディスク法熱物性測定装置TPA-501を用いて測定した。
マルコム粘度計(タイプPC-1T)を用い、25℃における絶対粘度を測定した。
JIS K 6249に従いせん断引張接着強さを測定した。具体的には、アルミニウムからなる幅25mmの長方形状の細片の片末端2枚の間に、厚さ2mmとなるようにシリコーン組成物層を挟んで張り合わせ(接着面積:25mm×10mm=2.5cm2)、150℃×1時間の硬化条件で硬化させて試験片を作成した。この試験片の両端を、引張り試験機により速度50mm/分で引張り、せん断強度を測定した。
高分子計器(株)社製AskerC(低硬さ用)を使用して、硬化物の硬度を測定し、経時での柔軟性を評価した。具体的には、10mm厚の型にシリコーン組成物を流し込み、150℃で1時間加熱して、厚み10mmのシート状のゴム成形物を形成した後25℃に戻し、硬化物の初期硬度を測定した。その後、温度150℃の条件下に1000時間放置した後25℃に戻し、硬化物の硬度を測定した。
Claims (7)
- 25℃で粘度10~1,000Pa・sを有するシリコーン組成物であって、
(A)1分子中に少なくとも2個のアルケニル基を有し、25℃での動粘度10~100,000mm2/sを有するオルガノポリシロキサン 100質量部、
(B)下記一般式(1)で示されるオルガノハイドロジェンポリシロキサン
(C)下記一般式(2)で示されるオルガノハイドロジェンポリシロキサン
(D)下記一般式(3)で示されるオルガノハイドロジェンポリシロキサン
(E)熱伝導性充填材 400~3,000質量部
(F)白金族金属系触媒 触媒量、及び
(G)反応制御剤 0.01~1質量部
を含有し、
上記(B)成分、(C)成分、及び(D)成分の配合量が、
[(B)成分、(C)成分、及び(D)成分由来のSi-H基の合計個数]/[(A)成分由来のアルケニル基の個数]が0.6~1.5の範囲にある値であり、
[(C)成分及び(D)成分由来のSi-H基の合計個数]/[(B)成分由来のSi-H基の個数]が1~10の範囲にある値であり、かつ
[(C)成分由来のSi-H基の個数]/[(D)成分由来のSi-H基の個数]が1~10の範囲にある値である量である、シリコーン組成物。 - 反応制御剤が、アセチレン化合物、窒素化合物、有機りん化合物、オキシム化合物、及び有機クロロ化合物より選択される、請求項1または2に記載のシリコーン組成物。
- (H)下記式(5)で示されるオルガノシランを(A)成分100質量部に対して0.01~30質量部となる量で更に含む、請求項1~3のいずれか1項に記載のシリコーン組成物
R5 aR6 bSi(OR7)4-a-b (5)
(式(5)中、R5は、互いに独立に、炭素数6~15の一価炭化水素基であり、R6は、互いに独立に、炭素数1~8の、飽和または不飽和の一価炭化水素基であり、R7は、互いに独立に、炭素数1~6の一価炭化水素基であり、aは1~3の整数であり、bは0~2の整数であり、但しa+bは1~3である)。 - (J)シリカ微粉末を(A)成分100質量部に対して0.1~200質量部となる量で更に含む、請求項1~5のいずれか1項記載のシリコーン組成物。
- 請求項1~6のいずれか1項記載のシリコーン組成物を硬化して得られた硬化物を備えた半導体装置。
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US20160096984A1 (en) | 2016-04-07 |
CN105164208B (zh) | 2017-09-19 |
RU2015152054A (ru) | 2017-06-13 |
JP2014218564A (ja) | 2014-11-20 |
JP5843368B2 (ja) | 2016-01-13 |
CN105164208A (zh) | 2015-12-16 |
EP2995651A4 (en) | 2016-12-21 |
KR20160006689A (ko) | 2016-01-19 |
EP2995651A1 (en) | 2016-03-16 |
US9481818B2 (en) | 2016-11-01 |
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