CN102030959A - A silane-crosslinked dynamically vulcanized thermoplastic elastomer - Google Patents
A silane-crosslinked dynamically vulcanized thermoplastic elastomer Download PDFInfo
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- CN102030959A CN102030959A CN2010106125290A CN201010612529A CN102030959A CN 102030959 A CN102030959 A CN 102030959A CN 2010106125290 A CN2010106125290 A CN 2010106125290A CN 201010612529 A CN201010612529 A CN 201010612529A CN 102030959 A CN102030959 A CN 102030959A
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- Prior art keywords
- silane
- thermoplastic elastomer
- dynamically vulcanized
- tert
- elastomer
- Prior art date
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Links
- 229920002725 thermoplastic elastomer Polymers 0.000 title claims abstract description 47
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910000077 silane Inorganic materials 0.000 claims abstract description 44
- 238000004132 cross linking Methods 0.000 claims abstract description 26
- 238000004073 vulcanization Methods 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 11
- 239000000806 elastomer Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000003963 antioxidant agent Substances 0.000 claims abstract 7
- 230000003078 antioxidant effect Effects 0.000 claims abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 3
- -1 pentaerythritol ester Chemical class 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 16
- 150000002978 peroxides Chemical class 0.000 claims description 14
- 239000003999 initiator Substances 0.000 claims description 13
- 239000001993 wax Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 229920001038 ethylene copolymer Polymers 0.000 claims description 9
- 239000004700 high-density polyethylene Substances 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 8
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 7
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 239000001632 sodium acetate Substances 0.000 claims description 7
- 235000017281 sodium acetate Nutrition 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 claims description 5
- 239000004702 low-density polyethylene Substances 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- URDOJQUSEUXVRP-UHFFFAOYSA-N 3-triethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CCO[Si](OCC)(OCC)CCCOC(=O)C(C)=C URDOJQUSEUXVRP-UHFFFAOYSA-N 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 4
- XQBCVRSTVUHIGH-UHFFFAOYSA-L [dodecanoyloxy(dioctyl)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC XQBCVRSTVUHIGH-UHFFFAOYSA-L 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims 2
- 239000008187 granular material Substances 0.000 claims 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical group [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims 2
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 claims 1
- FKWFEDQQDRUGMR-UHFFFAOYSA-N 2-prop-2-enoxyethoxysilane Chemical compound C(=C)COCCO[SiH3] FKWFEDQQDRUGMR-UHFFFAOYSA-N 0.000 claims 1
- QNRSKOMEMRENSK-UHFFFAOYSA-L C(C=C/C(=O)[O-])(=O)[O-].C(CCC)[Sn+2]CCCC.C(CCCCCCCCCCC)(=O)O Chemical compound C(C=C/C(=O)[O-])(=O)[O-].C(CCC)[Sn+2]CCCC.C(CCCCCCCCCCC)(=O)O QNRSKOMEMRENSK-UHFFFAOYSA-L 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 229920004889 linear high-density polyethylene Polymers 0.000 claims 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims 1
- 235000019799 monosodium phosphate Nutrition 0.000 claims 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 16
- 239000003112 inhibitor Substances 0.000 description 14
- 230000003647 oxidation Effects 0.000 description 14
- 238000007254 oxidation reaction Methods 0.000 description 14
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical class CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 11
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 8
- 229920001903 high density polyethylene Polymers 0.000 description 8
- 235000019260 propionic acid Nutrition 0.000 description 8
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 8
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 7
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229960004249 sodium acetate Drugs 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- MJHYUGSEWQDYHK-UHFFFAOYSA-N ethenyl-ethoxy-methoxysilane Chemical compound CCO[SiH](OC)C=C MJHYUGSEWQDYHK-UHFFFAOYSA-N 0.000 description 3
- 229940045641 monobasic sodium phosphate Drugs 0.000 description 3
- 239000005639 Lauric acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920003987 resole Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- MAHNFPMIPQKPPI-UHFFFAOYSA-N disulfur Chemical compound S=S MAHNFPMIPQKPPI-UHFFFAOYSA-N 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of thermoplastic elastomer materials, in particular to a silane crosslinked dynamic vulcanization thermoplastic elastomer and a preparation method thereof, wherein the silane crosslinked dynamic vulcanization thermoplastic elastomer comprises 27 to 75 weight percent of silane grafted elastomer, 20 to 70 weight percent of polyolefin resin, 0.1 to 0.3 weight percent of crosslinking catalyst, 0.5 to 2 weight percent of water producing agent, 0.1 to 0.5 weight percent of antioxidant and 0.2 to 0.5 weight percent of lubricant; and is prepared by a reactive double-screw extruder; the invention can overcome the influence of the traditional crosslinking system on the performance of the dynamically vulcanized thermoplastic elastomer.
Description
Technical field
The present invention relates to a kind of thermoplastic elastic material, particularly a kind of dynamic vulcanization thermoplastic elastomer with crosslinked with silicane.
Background technology
Dynamic vulcanization thermoplastic elastomer is in the seventies appearance in last century.Its notable feature be rubber phase in the screw mixes extrusion crosslinked and with tiny particles dispersed in thermoplastics, the working method of this analog thermoplastic elastomer available heat thermoplastic plastic is processed, and has the characteristic of rubber in very wide temperature range.Therefore, this class material has purposes widely in fields such as automobile, electronics, electrical equipment, building, packing.
In the prior art, the dynamic vulcanization thermoplastic elastomer preparation mainly concentrates on dynamic vulcanization method and prepares the EPDM/PP blending thermoplastic elastomer, three kinds of vulcanization systems generally commonly used: (1) sulfur sulfide system (2) peroxide vulcanizing system (3) phenolic resin vulcanization system.U.S. Mengshan all (Monsanto) is the company that obtains the dynamic vulcanization thermoplastic elastomer patent the earliest, and its U.S. Pat 4130535 and US4311628 are that linking agent prepares thermoplastic ethylene-propylene rubber/polyolefine elastomer with sulphur and resol respectively.What application number was that 200310106228.0 Chinese patent proposes is to be that linking agent prepares fire retardant EPT rubber/thermoplastic elastomer with resol.Application number is that 200710170562.0 Chinese patent proposes with the organo-peroxide is that linking agent prepares the elastomeric method of a kind of high quality dynamic vulcanization thermoplastic.Although more than various thermoplastic elastomers form and technology is distinguished to some extent, performance has their own characteristics each, yet, all these thermoplastic elastomers exist in the preparation extrusion owing to shear and blended energy and heat release are one of crosslinked or both cause part " hot spot ", cause the degraded of thermoplastic resin or rubber, undesirable reaction perhaps takes place, and causes the loss of the finished product performance.
Summary of the invention
In order to address the above problem, one of purpose of the present invention is, a kind of thermoplastic elastomer with the crosslinked with silicane preparation is provided, and can overcome traditional cross-linking system to the dynamic vulcanization thermoplastic elastomer Effect on Performance.
Another object of the present invention is, described process for preparation of thermoplastic elastomer with the crosslinked with silicane preparation is provided; This is invented, and not only preparation technology is simple, and with low cost.
The present invention is achieved through the following technical solutions:
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 27%～75%
Polyolefin resin 20%～70%
Crosslinking catalyst 0.1%～0.3%
Produce aqua 0.5%～2%
Oxidation inhibitor 0.1%～0.5%
Lubricant 0.2%～0.5%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio:
100 parts on ethylene copolymer elastomerics
0.5～5 part in silane
0.05～1 part of peroxide initiator
0.1～0.5 part in oxidation inhibitor
0.2～0.5 part of lubricant.
Described ethylene copolymer elastomerics is the one or more combination thing in ethylene-propylene rubber(EPR), terpolymer EP rubber, ethylene-octene copolymer or the ethylene-vinyl acetate copolymer.
Described silane is the one or more combination thing in vinyltrimethoxy silane, vinyltriethoxysilane, vinyl methoxy ethoxy silane or the methacryloxypropyl triethoxyl silane.
Described peroxide initiator is dicumyl peroxide, di-t-butyl peroxide, 2,5-dimethyl-2, the one or more combination thing in the 5-di-t-butyl hexane peroxide.
Described oxidation inhibitor is four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester or β-positive octadecanol esters of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid.
Described oxidation inhibitor is four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester or β-(3, the 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid respectively with the compound of 1～2: 1 ratio of three [2, the 4-di-tert-butyl-phenyl] phosphorous acid ester.
Described polyolefin resin is one or more the mixture in new LDPE (film grade), linear low density polyethylene, high density polyethylene(HDPE) or the polypropylene.
Described crosslinking catalyst is the one or more combination thing in dibutyl tin laurate, toxilic acid dibutyl tin, lauric acid toxilic acid dibutyl tin or the Bis(lauroyloxy)dioctyltin.
Described product aqua is one or more the mixture in sodium-acetate, SODIUM PHOSPHATE, MONOBASIC or the gypsum.
Described lubricant is one or more the mixture in paraffin, polyethylene wax or the Poly Propylene Wax.
The method for preparing thermoplastic elastomer through dynamic vulcanization of crosslinked with silicane comprises being prepared as follows step:
A, preparation silane grafting elastomerics, get ethylene copolymer elastomerics, silane, peroxide initiator, oxidation inhibitor and lubricant at first by weight, even through high-speed mixing, extruding pelletization in reactive twin screw extruder then, pellet after thorough drying silane grafting elastomerics;
The dynamic vulcanization thermoplastic elastomer of B, preparation crosslinked with silicane, get silane grafting elastomerics, polyolefin resin, crosslinking catalyst, product aqua, oxidation inhibitor and lubricant by weight, even through high-speed mixing, extruding pelletization in reactive twin screw extruder makes final thermoplastic elastomer then.
The length-to-diameter ratio L/D of described reactive twin screw extruder is more than 42, and extrusion temperature is: 120 ℃～160 ℃ of feeding sections, 180 ℃～190 ℃ of compression sections, 190 ℃～210 ℃ of homogenizing zones, 200 ℃～220 ℃ of machine head port mould parts.
The present invention is counted by weight percentage, and comprises silane grafting elastomerics 27%～75%, polyolefin resin 20%～70%, crosslinking catalyst 0.1%～0.3%, produces aqua 0.5%～2%, oxidation inhibitor 0.1%～0.5%, lubricant 0.2%～0.5%; And be prepared and get by reactive twin screw extruder; The present invention can overcome traditional cross-linking system to the dynamic vulcanization thermoplastic elastomer Effect on Performance; Avoid preparing in the extrusion and to exist, cause the drawback of the loss of the finished product performance owing to shear and blended energy and heat release are one of crosslinked or both cause part " hot spot ", cause the degraded of thermoplastic resin or rubber or undesirable reaction takes place.
Concrete embodiment
The present invention is described in further detail below in conjunction with embodiment, understands the present invention to help those skilled in the art.
Embodiment 1
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 30%; Polyolefin resin 68% (polyolefin resin is the composition of new LDPE (film grade) 2%, linear low density polyethylene 2%, high density polyethylene(HDPE) 10% and polypropylene 54%); Crosslinking catalyst 0.1%～0.3% (crosslinking catalyst is the composition of dibutyl tin laurate 0.1%, toxilic acid dibutyl tin 0.1% and lauric acid toxilic acid dibutyl tin 0.1%); Sodium-acetate 0.5%; Four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester 0.5%; Lubricant 0.5% (lubricant is the composition of paraffin 0.3%, polyethylene wax 0.1%, Poly Propylene Wax 0.1%).
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts in ethylene-propylene rubber(EPR); 0.5 part of vinyltrimethoxy silane; 1 part of peroxide initiator (peroxide initiator is 0.2 part of 0.2 part of a dicumyl peroxide, di-t-butyl peroxide, 2,5-dimethyl-2, the composition that the 5-di-t-butyl hexane peroxide is 0.6 part); 00.5 part in oxidation inhibitor (oxidation inhibitor is the compound of 2: 1 ratios of four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and three [2, the 4-di-tert-butyl-phenyl] phosphorous acid ester); 0.5 part of polyethylene wax.
The method for preparing thermoplastic elastomer through dynamic vulcanization of crosslinked with silicane comprises being prepared as follows step:
A, preparation silane grafting elastomerics, get ethylene copolymer elastomerics, silane, peroxide initiator, oxidation inhibitor and lubricant at first by weight, even through high-speed mixing, extruding pelletization in reactive twin screw extruder then, pellet after thorough drying silane grafting elastomerics;
The dynamic vulcanization thermoplastic elastomer of B, preparation crosslinked with silicane, get silane grafting elastomerics, polyolefin resin, crosslinking catalyst, product aqua, oxidation inhibitor and lubricant by weight, even through high-speed mixing, extruding pelletization in reactive twin screw extruder makes final thermoplastic elastomer then.
The length-to-diameter ratio L/D of described reactive twin screw extruder is more than 42, and extrusion temperature is: 160 ℃ of feeding sections, 180 ℃ of compression sections, 210 ℃ of homogenizing zones, 200 ℃ of machine head port mould parts; Screw speed is 400r/min
Embodiment 2
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 75%; Polypropylene 23%; Crosslinking catalyst 0.2% (crosslinking catalyst is the composition of dibutyl tin laurate 0.1% and toxilic acid dibutyl tin 0.1%); Produce aqua 1.5% (producing aqua is the composition of sodium-acetate 0.1%, SODIUM PHOSPHATE, MONOBASIC 0.1%, gypsum 1.3%); β-positive octadecanol the ester 0.1% of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid; Polyethylene wax 0.2%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts on ethylene copolymer elastomerics (the ethylene copolymer elastomerics is the composition of 80 parts of 20 parts of ethylene-octene copolymers and ethylene-vinyl acetate copolymers); 1 part of vinyltrimethoxy silane; 0.2 part of peroxide initiator (peroxide initiator is 0.1 part of di-t-butyl peroxide and 2,5-dimethyl-2, the composition that the 5-di-t-butyl hexane peroxide is 0.1 part); 0.2 part in oxidation inhibitor (oxidation inhibitor is the compound of 1: 1 ratio of the β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid and three [2, the 4-di-tert-butyl-phenyl] phosphorous acid ester); 0.3 part in paraffin.
The preparation method is with embodiment 1, and wherein, the extrusion temperature of described parallel dual-screw extruding machine is: 120 ℃ of feeding sections, and 200 ℃ of 190 ℃ of homogenizing zones in compression section, 220 ℃ of machine head port mould parts, screw speed is 100r/min.
Embodiment 3
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 27%; New LDPE (film grade) 70%; Bis(lauroyloxy)dioctyltin 0.3%; Sodium-acetate 2%; β-positive octadecanol the ester 0.4% of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid; Poly Propylene Wax 0.5%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts in ethylene-propylene rubber(EPR); 2 parts in vinyl methoxy ethoxy silane, 0.8 part of di-t-butyl peroxide; Four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] 0.1 part of pentaerythritol ester, 0.4 part in paraffin.
The preparation method is with embodiment 1, and wherein, the extrusion temperature of described parallel dual-screw extruding machine is: 130 ℃ of feeding sections, and 206 ℃ of 182 ℃ of homogenizing zones in compression section, 208 ℃ of screw speeds of machine head port mould part are 180r/min.
Embodiment 4
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 58%; High density polyethylene(HDPE) 40%; Dibutyl tin laurate 0.1%; SODIUM PHOSPHATE, MONOBASIC 0.5%; Four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester 0.5; Polyethylene wax 0.4%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts of ethylene-octene copolymers; 3 parts in vinyl methoxy ethoxy silane; 0.6 part of peroxide initiator (peroxide initiator is 0.3 part of di-t-butyl peroxide and 2,5-dimethyl-2, the composition that the 5-di-t-butyl hexane peroxide is 0.3 part); 0.4 part in oxidation inhibitor (compounds of 1.5: 1 ratios of the β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid and three [2, the 4-di-tert-butyl-phenyl] phosphorous acid ester); 0.2 part in paraffin.
The preparation method is with embodiment 1, and wherein, the extrusion temperature of described parallel dual-screw extruding machine is: 160 ℃ of feeding sections, and 215 ℃ of 185 ℃ of homogenizing zones in compression section, 202 ℃ of screw speeds of machine head port mould part are 200r/min.
Embodiment 5
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 70; New LDPE (film grade) 25.3%; Toxilic acid dibutyl tin 0.2%; Sodium-acetate 1%; Four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester 0.2%; Poly Propylene Wax 0.3%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts in ethylene-propylene rubber(EPR); 5 parts of methacryloxypropyl triethoxyl silanes; 0.05 part of dicumyl peroxide; 0.1 part of four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester; 0.2 part of ethylene waxes.
The preparation method is with embodiment 1, and wherein, the extrusion temperature of described parallel dual-screw extruding machine is: 160 ℃ of feeding sections, and 210 ℃ of 190 ℃ of homogenizing zones in compression section, 210 ℃ of screw speeds of machine head port mould part are 300r/min.
Embodiment 6
A kind of dynamic vulcanization thermoplastic elastomer of crosslinked with silicane comprises the following raw material that calculates by mass ratio:
Silane grafting elastomerics 40; High density polyethylene(HDPE) 67%; Toxilic acid dibutyl tin 0.3%; Sodium-acetate 2%; β-positive octadecanol the ester 0.5% of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid; Poly Propylene Wax 0.2%.
Wherein, described silane grafting elastomerics comprises the following raw material that calculates by mass ratio: 100 parts of ethylene-vinyl acetate copolymers; 5 parts of methacryloxypropyl triethoxyl silanes; 0.05 part of di-t-butyl peroxide; 0.1 part of the β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid; 0.2 part in paraffin.
The preparation method is with embodiment 1, and wherein, the extrusion temperature of described parallel dual-screw extruding machine is: 130 ℃ of feeding sections, and 202 ℃ of 190 ℃ of homogenizing zones in compression section, 218 ℃ of screw speeds of machine head port mould part are 350r/min.
The foregoing description is preferred embodiment of the present invention, is not to be used for limiting the scope of the present invention, so all equivalences of being done with described feature of claim of the present invention and principle change or modify, all should be included within the claim scope of the present invention.
The product that obtains after testing, the gained performance data sees Table 1.
Table 1
As can be seen from Table 1, the present invention has overcome traditional cross-linking system to the dynamic vulcanization thermoplastic elastomer Effect on Performance, and the performance perameter of each side is all relatively good.
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| CN102432943A (en) * | 2011-10-17 | 2012-05-02 | 佛山市日丰企业有限公司 | Elastomer composition, elastomer hose and preparation method of elastomer hose |
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| CN103172937B (en) * | 2013-04-11 | 2015-10-28 | 杭州恒标管业有限公司 | A kind of Silane Grafted PPR pipe PP Pipe Compound and preparation method thereof |
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