CN112795064A - Foaming material with silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure and preparation method thereof - Google Patents
Foaming material with silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure and preparation method thereof Download PDFInfo
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- CN112795064A CN112795064A CN202011599472.5A CN202011599472A CN112795064A CN 112795064 A CN112795064 A CN 112795064A CN 202011599472 A CN202011599472 A CN 202011599472A CN 112795064 A CN112795064 A CN 112795064A
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- ipn
- polymer network
- interpenetrating polymer
- rubber
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229920000642 polymer Polymers 0.000 title claims abstract description 46
- 229920003051 synthetic elastomer Polymers 0.000 title claims abstract description 41
- 239000005061 synthetic rubber Substances 0.000 title claims abstract description 41
- 238000005187 foaming Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title claims abstract description 34
- 239000000741 silica gel Substances 0.000 title claims abstract description 30
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 18
- 239000006229 carbon black Substances 0.000 claims abstract description 39
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 38
- 239000004945 silicone rubber Substances 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004088 foaming agent Substances 0.000 claims abstract description 22
- 229920002545 silicone oil Polymers 0.000 claims abstract description 22
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 20
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 20
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 18
- 239000003063 flame retardant Substances 0.000 claims abstract description 18
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004014 plasticizer Substances 0.000 claims abstract description 17
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 12
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008117 stearic acid Substances 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 239000004156 Azodicarbonamide Substances 0.000 claims description 15
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 15
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 15
- 239000006261 foam material Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 15
- 239000000178 monomer Substances 0.000 claims description 12
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 11
- -1 ethylene, propylene Chemical group 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims description 8
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 8
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 4
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 claims description 4
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 229920001897 terpolymer Polymers 0.000 claims description 4
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical group C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 claims description 3
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 3
- 150000001343 alkyl silanes Chemical class 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 3
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 239000010690 paraffinic oil Substances 0.000 claims description 2
- CWPKTBMRVATCBL-UHFFFAOYSA-N 3-[1-[1-[(2-methylphenyl)methyl]piperidin-4-yl]piperidin-4-yl]-1h-benzimidazol-2-one Chemical compound CC1=CC=CC=C1CN1CCC(N2CCC(CC2)N2C(NC3=CC=CC=C32)=O)CC1 CWPKTBMRVATCBL-UHFFFAOYSA-N 0.000 claims 1
- 239000011810 insulating material Substances 0.000 abstract description 7
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 235000019241 carbon black Nutrition 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 19
- 238000009413 insulation Methods 0.000 description 10
- 229920000459 Nitrile rubber Polymers 0.000 description 8
- 239000005662 Paraffin oil Substances 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 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 2
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 2
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920006602 NBR/PVC Polymers 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 150000004826 dibenzofurans Chemical class 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 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 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000004079 stearyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0019—Use of organic additives halogenated
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
-
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Abstract
The invention discloses a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure and a preparation method thereof. The foaming material with the Interpenetrating Polymer Network (IPN) structure of the silica gel synthetic rubber comprises, by weight, 10-40 parts of methyl vinyl silicone rubber, 5-20 parts of precipitated white carbon black, 0.5-6 parts of hydroxyl silicone oil, 0.025-0.5 part of a silane coupling agent, 60-90 parts of styrene butadiene rubber, 0-20 parts of ethylene propylene diene monomer rubber, 20-40 parts of a plasticizer, 30-60 parts of a flame retardant, 1-3 parts of an anti-aging agent, 3-10 parts of a filler, 1-5 parts of carbon black, 0.5-3 parts of stearic acid, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 15-40 parts of a foaming agent and 3-8 parts of a vulcanizing agent. The invention can solve the problem that the heat-insulating material is easy to break at low temperature.
Description
Technical Field
The invention belongs to the technical field of insulating materials, and particularly relates to a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure and a preparation method thereof.
Background
With the increasing demand and output of heat insulating materials in China in recent years, the rubber-plastic heat insulating materials are widely applied to heat insulation of various cold and hot medium pipelines and containers in the industries of central air conditioners, chemical engineering, buildings, vehicles, ships, electrical appliances and the like due to the excellent characteristics of light weight, softness, low heat conductivity coefficient, low temperature resistance, flame retardance and the like, thereby achieving the effect of reducing energy loss.
The existing rubber-plastic heat-insulating material mainly takes nitrile rubber and polyvinyl chloride (NBR/PVC) as main materials, and foaming is carried out by controlling the decomposition speed of vulcanization and foaming agent. For example, chinese invention patent CN104250388A discloses a flame retardant NBR/PVC rubber-plastic foam thermal insulation material composition, which mainly comprises the following components in parts by weight: 60-70 parts of nitrile rubber, 30-45 parts of PVC resin, 20-50 parts of flame retardant plasticizer, 4-7 parts of Ca/Zn heat stabilizer, 40-50 parts of flame retardant, 8-10 parts of azodicarbonamide, 2-4 parts of sulfur, 4-7 parts of sulfur accelerator, 2-6 parts of anti-aging agent and 25-40 parts of reinforcing agent. The processing procedure is complex, and the requirement on a vulcanization foaming device is high; because a sulfur vulcanization system is used and a large amount of micromolecular plasticizer is added, a large amount of smoke is easily generated, the environment is polluted, and the increasingly strict environmental protection requirements are not met.
In addition, the existing rubber-plastic heat-insulating material has the defects of large foaming aperture, easy hole breakage, easy hole opening and the like, so that the heat-insulating effect is poor; and the common rubber-plastic heat-insulating material is easy to age at low temperature to reduce or lose the heat-insulating effect, and even cracks and brittle are generated and broken at once. In the current general mode, the ethylene propylene diene monomer is added, and the flexibility and elasticity of the rubber plastic material in a low-temperature environment are improved by utilizing the characteristic that the ethylene propylene diene monomer can keep smooth in a wider temperature range. For example, CN103788430A discloses a low temperature resistant rubber-plastic foam thermal insulation material, specifically, 4-10% of butadiene rubber, ethylene-propylene-diene monomer, ethylene-vinyl acetate copolymer, etc. are added into 8-20% of nitrile rubber and 10-25% of polyvinyl chloride as low temperature resistant modifier, and 10-20% of dioctyl adipate or dioctyl sebacate, etc. are added as low temperature resistant plasticizer, and the prepared foam thermal insulation material still has good flexibility at-50 ℃.
CN11154193A discloses a flame-retardant elastic rubber-plastic heat-insulation board, which mainly comprises the following components in parts by weight: 40-80 parts of ethylene propylene diene monomer, 20-40 parts of styrene butadiene rubber, 5-10 parts of high styrene resin, 3-5 parts of vulcanization accelerator, 2-7 parts of activator, 15-20 parts of dinitrosopentamethylenetetramine serving as foaming agent, 1-3 parts of sulfur, 0.1-0.5 part of antioxidant and 40-60 parts of composite flame retardant. The ethylene propylene diene monomer and the styrene butadiene rubber can form a sea-island two-phase system, and can absorb a large amount of energy under the impact force, so that the toughness and elasticity of the material are improved.
The interpenetrating network polymer (IPN) is an elastomer formed by respectively crosslinking two or more than two polymers and penetrating mutually, and the polymer networks are mutually crossed, penetrated and mechanically entangled to play the roles of forced mutual compatibility and synergistic reaction, so that incompatible or semi-compatible high polymers can form physical interlocking, thereby effectively widening the glass transition region of the material.
The silica gel has small intermolecular acting force, good flexibility of molecular chains and low Mooney viscosity, and the styrene butadiene rubber has a rigid benzene ring structure and stronger intermolecular acting force than methyl vinyl silica gel molecules, so that the Mooney viscosity is high, which causes poor mixing compatibility of pure styrene butadiene rubber and pure methyl vinyl silica gel. In addition, due to the difference of molecular structures and the difference of vulcanization speeds, the methyl vinyl silicone rubber and the styrene-butadiene rubber are vulcanized to form independent crosslinking networks respectively. But the interface interaction between the methyl vinyl silica gel and the silicon dioxide particles can be enhanced, so that the molecular chains of the methyl vinyl silica gel and the styrene-butadiene rubber are more bonded on the surface of the silicon dioxide; and the compatibility of the silica gel and the styrene butadiene rubber is improved by using compatibilizers such as methyl silicone oil, hydroxyl silicone oil, paraffin oil and the like. The foaming thermal insulation material with the Interpenetrating Polymer Network (IPN) structure of the methyl vinyl silica gel and the synthetic rubber can be prepared by a specific compatibilization system and a rubber mixing process, and has good flexibility and elasticity under the low-temperature environment of-60 to-80 ℃.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a foam material with an Interpenetrating Polymer Network (IPN) structure of silicone rubber, which solves the problem that the insulation material is easy to break at low temperature; the invention also provides a preparation method of the foam material with the silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises, by weight, 10-40 parts of methyl vinyl silicone rubber, 5-20 parts of precipitated white carbon black, 0.5-6 parts of hydroxyl silicone oil, 0.025-0.5 part of a silane coupling agent, 60-90 parts of styrene butadiene rubber, 0-20 parts of ethylene propylene diene monomer, 20-40 parts of a plasticizer, 30-60 parts of a flame retardant, 1-3 parts of an anti-aging agent, 3-10 parts of a filler, 1-5 parts of carbon black, 0.5-3 parts of stearic acid, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 15-40 parts of a foaming agent and 3-8 parts of a vulcanizing agent.
The methyl vinyl silicone rubber has the characteristics of wide use temperature range, good elasticity which can be kept within the range of minus 80 ℃ to 250 ℃, small compression permanent deformation, excellent cold resistance and the like. The sulfidation is suitably carried out with peroxide or platinum catalysts.
The styrene-butadiene rubber is a copolymer of butadiene and styrene, can generate various reactions caused by double bonds, can be vulcanized by sulfur and peroxide, and has good heat resistance, wear resistance and aging resistance.
Furthermore, the molecular weight of the methyl vinyl silicone rubber is 40-70 ten thousand, wherein the vinyl content is 0.02% -2%.
Furthermore, the viscosity of the hydroxyl silicone oil is 5-50 cs, the hydroxyl content is 3% -10%, and the weight ratio of the hydroxyl silicone oil to the precipitated white carbon black is 10% -30%.
Furthermore, the average particle size of the precipitated white carbon black is 1-20 mu m, and the specific surface area is 100-250 m2/g。
Further, the silane coupling agent comprises at least one of an aminosilane coupling agent, a vinyl silane coupling agent and an alkyl silane coupling agent, and the weight part ratio of the silane coupling agent to the precipitated silica is 0.5-2.5%.
Further, the ethylene propylene diene monomer is a terpolymer obtained by reacting ethylene, propylene and a third monomer, wherein the third monomer is ethylidene norbornene or dicyclopentadiene, and the content of the third monomer is 0.1-8%. The ethylene propylene diene monomer rubber has a completely saturated main chain and has excellent characteristics of heat resistance, low temperature resistance, aging resistance, water resistance and the like.
Further, the plasticizer comprises at least one of methyl silicone oil, chlorinated paraffin, dioctyl adipate, dioctyl sebacate, dioctyl phthalate, naphthenic oil and paraffin oil. The plasticizer can reduce the Mooney viscosity of the styrene-butadiene rubber and the ethylene propylene diene monomer rubber and improve the compatibility with the methyl vinyl silicone rubber.
Further, the flame retardant comprises at least one of aluminum hydroxide, zinc borate or decabromodiphenylethane.
Wherein, the aluminum hydroxide contains crystal water, absorbs a large amount of heat at 300-350 ℃ to dehydrate, and reduces the actual temperature of the material; the aluminum hydroxide generates active aluminum oxide after dehydration, promotes dehydrogenation reaction, generates a protective carbon layer and reduces the smoke generation amount. The aluminum hydroxide is preferably nano aluminum hydroxide, the particle size is 10 nm-50 nm, and the specific surface area is 100m2More than g.
The zinc borate can form a glass titanium inorganic expansion coating, promote carbon formation, hinder escape of volatile combustible substances, and reduce smoke during combustion.
The decabromodiphenylethane does not generate toxic polybrominated dibenzodioxane (PBDO) and polybrominated dibenzofuran (PBDF) during thermal cracking or combustion, and does not cause harm to the environment.
Further, the foaming agent is Azodicarbonamide (AC), the gas forming amount is more than or equal to 200mL/g, and the average particle size is not more than 10 mu m.
The antioxidant comprises at least one of an antioxidant 1010 (pentaerythritol beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), an antioxidant 1076 (octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and an antioxidant 2246(2, 2-methylene-bis (4-methyl-6-tert-butylphenol)).
Further, the filler comprises at least one of talcum powder and kaolin.
Further, the carbon black comprises at least one of commercially available N550, N220, N330, N660 and pigment carbon black.
Further, the vulcanizing agent includes at least one of dicumyl peroxide, bis-penta (2, 5-dimethyl-2, 5-di (t-butylperoxy) hexane), bis-tetra (bis (2, 4-dichlorobenzoyl) peroxide), TBPB (t-butyl peroxybenzoate), BP (benzoyl peroxide).
Another object of the invention is achieved by:
the invention also provides a preparation method of the foam material with the silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises the following steps:
putting 10-40 parts of methyl vinyl silicone rubber, 5-20 parts of precipitated white carbon black, 0.5-6 parts of hydroxyl silicone oil and 0.025-0.5 part of silane coupling agent which are weighed into a kneading machine, kneading for 10-60 min at 60-120 ℃, and then carrying out vacuum heat preservation for 20-60 min at 150-180 ℃ to obtain a composition A;
putting weighed styrene butadiene rubber 60-90 parts, ethylene propylene diene monomer 0-20 parts, plasticizer 20-40 parts, flame retardant 30-60 parts, anti-aging agent 1-3 parts, filler 3-10 parts, carbon black 1-5 parts, stearic acid 0.5-3 parts, zinc oxide 3-8 parts and magnesium oxide 1-3 parts into an internal mixer, and internally mixing at 110-150 ℃ for 20-40 min to obtain a composition B;
putting the composition A into an internal mixer, internally mixing the composition A and the composition B for 20-60 min at 50-100 ℃, then adding 15-40 parts of foaming agent and 3-8 parts of vulcanizing agent into the internal mixer, continuously internally mixing for 10-30 min at 30-60 ℃, discharging, and milling to obtain a component C;
and (3) putting the component C into an extruder, conveying the extruded component C into a tunnel furnace for continuous foaming, and cooling after foaming to obtain the foaming material with the Interpenetrating Polymer Network (IPN) structure of the silica gel synthetic rubber.
Further, the temperature of the feeding section of the extruder is 20-40 ℃, and the pressure is 0.1-0.2 MPa; the plasticizing section is at 40-50 ℃ and 0.3-0.4 MPa; the head section is 50-70 ℃ and the pressure is 0.3-0.4 Mpa.
Further, the tunnel furnace is divided into six temperature zones, wherein the first zone is 130-140 ℃, the second zone is 140-150 ℃, the third zone is 150-160 ℃, the fourth zone is 160-170 ℃, the fifth zone is 170-180 ℃, and the sixth zone is 180-190 ℃.
Compared with the prior art, the foaming material with the Interpenetrating Polymer Network (IPN) structure of the silica gel synthetic rubber is an IPN structure, can keep lower heat conductivity coefficient and higher flexibility at 60 ℃ below zero for a long time, has the advantages of good heat preservation effect, aging resistance, flame retardance and the like, and can meet the heat preservation of various cold and hot medium pipelines and containers in the industries of central air conditioners, chemical industry, buildings, vehicles, ships, electric appliances and the like, thereby achieving the effect of reducing energy loss.
The preparation method of the invention can enable the foaming material with the silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure to have lower density, thereby improving the heat insulation performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the embodiments of the present application and features of the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example 1
The embodiment provides a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises, by weight, 10 parts of methyl vinyl silicone rubber, 5 parts of precipitated white carbon black, 0.5 part of hydroxy silicone oil, 0.025 part of a silane coupling agent, 60 parts of styrene-butadiene rubber, 0 part of ethylene propylene diene monomer, 20 parts of a plasticizer, 30 parts of a flame retardant, 1 part of an anti-aging agent, 3 parts of a filler, 1 part of carbon black, 0.5 part of stearic acid, 3 parts of zinc oxide, 1 part of magnesium oxide, 15 parts of a foaming agent and 3 parts of a vulcanizing agent.
Wherein the molecular weight of the methyl vinyl silicone rubber is 40-70 ten thousand, and the vinyl content is 0.02%. The viscosity of the hydroxyl silicone oil is 5cs, the hydroxyl content is 3%, and the weight ratio of the hydroxyl silicone oil to the precipitated white carbon black is 10%. The average particle diameter of the precipitated white carbon black is 1 mu m, and the specific surface area is 100m2(ii) in terms of/g. The silane coupling agent is amino silane coupling agent, and the weight ratio of the silane coupling agent to the precipitated white carbon black is 0.5%. The plasticizer comprises methyl silicone oil and chlorinated paraffin (52 #). The flame retardant comprises aluminum hydroxide, zinc borate and decabromodiphenylethane, wherein the aluminum hydroxide is nano aluminum hydroxide with the particle size of 10nm and the specific surface area of 100m2(ii) in terms of/g. The anti-aging agent is anti-aging agent 1010 (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) pentaerythritol propionate). The filler is talcum powder. The carbon blacks are commercially available as N550, N220, N330 and N660. The foaming agent is an AC foaming agent (azodicarbonamide), the gas forming amount is more than or equal to 200mL/g, and the average particle size is not more than 10 mu m. The sulfurizing agent is DCP (dicumyl peroxide).
Example 2
The embodiment provides a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises, by weight, 25 parts of methyl vinyl silicone rubber, 10 parts of precipitated white carbon black, 2 parts of hydroxy silicone oil, 0.25 part of a silane coupling agent, 75 parts of styrene butadiene rubber, 10 parts of ethylene propylene diene monomer, 300 parts of a plasticizer, 45 parts of a flame retardant, 2 parts of an anti-aging agent, 6 parts of a filler, 3 parts of carbon black, 2 parts of stearic acid, 5 parts of zinc oxide, 2 parts of magnesium oxide, 30 parts of a foaming agent and 5 parts of a vulcanizing agent.
Wherein the molecular weight of the methyl vinyl silicone rubber is 40-70 ten thousand, and the vinyl content is 0.1%. The viscosity of the hydroxyl silicone oil is 30cs, the hydroxyl content is 6%, and the weight ratio of the hydroxyl silicone oil to the precipitated white carbon black is 20%. The average particle diameter of the precipitated white carbon black is 10 mu m, and the specific surface area is 180m2(ii) in terms of/g. The silane coupling agent is vinyl silane coupling agent, and the weight ratio of the silane coupling agent to the precipitated white carbon black is 2.5%. The plasticizer comprises dioctyl adipate, dioctyl sebacate and dioctyl phthalate, the aluminum hydroxide is nanometer aluminum hydroxide with particle diameter of 30nm and specific surface area of 150m2(ii) in terms of/g. Flame retardants include aluminum hydroxide, zinc borate, and decabromodiphenylethane. The anti-aging agent is anti-aging agent 1076 (beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate). The filler is kaolin. The carbon black is N550, N220, N330, N660 and pigment carbon black which are sold on the market. The foaming agent is an AC foaming agent (azodicarbonamide), the gas forming amount is 300mL/g, and the average particle size is 8 mu m. The vulcanizing agent is bis-penta (2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane). The ethylene propylene diene monomer is terpolymer obtained by reacting ethylene, propylene and a third monomer, wherein the third monomer is ethylidene norbornene, and the content of the third monomer is 0.1%.
Example 3
The embodiment provides a foaming material with a silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises, by weight, 40 parts of methyl vinyl silicone rubber, 20 parts of precipitated white carbon black, 6 parts of hydroxy silicone oil, 0.5 part of a silane coupling agent, 90 parts of styrene butadiene rubber, 20 parts of ethylene propylene diene monomer, 40 parts of a plasticizer, 60 parts of a flame retardant, 3 parts of an anti-aging agent, 10 parts of a filler, 5 parts of carbon black, 3 parts of stearic acid, 8 parts of zinc oxide, 3 parts of magnesium oxide, 40 parts of a foaming agent and 8 parts of a vulcanizing agent.
Wherein the molecular weight of the methyl vinyl silicone rubber is 40-70 ten thousand, and the vinyl content is 2%. The viscosity of the hydroxyl silicone oil is 50cs, the hydroxyl content is 10%, and the weight ratio of the hydroxyl silicone oil to the precipitated white carbon black is 30%. The average particle diameter of the precipitated white carbon black is 20 mu m, and the specific surface area is 250m2(ii) in terms of/g. The silane coupling agent is alkyl silane coupling agent, silane coupling agent and precipitated white carbonThe weight ratio of black was 2.5%. Plasticizers include naphthenic and paraffinic oils. The flame retardant comprises aluminum hydroxide, zinc borate and decabromodiphenylethane, wherein the aluminum hydroxide is nano aluminum hydroxide with the particle size of 50nm and the specific surface area of 200m2(ii) in terms of/g. The anti-aging agent is anti-aging agent 2246(2, 2-methylene-bis (4-methyl-6-tert-butylphenol)). The filler is kaolin. The carbon black is N550, N220, N330, N660 and pigment carbon black which are sold on the market. The foaming agent is an AC foaming agent (azodicarbonamide), the gas forming amount is 350mL/g, and the average particle size is 8 mu m. The vulcanizing agent is bis-tetrakis (bis (2, 4-dichlorobenzoyl) peroxide). The ethylene propylene diene monomer is terpolymer obtained by reacting ethylene, propylene and a third monomer, wherein the third monomer is dicyclopentadiene, and the content of the third monomer is 8%.
Example 4
The embodiment provides a foaming material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure, which comprises, by weight, 20 parts of vinyl silicone rubber, 10 parts of precipitated white carbon black, 2 parts of hydroxyl silicone oil, 1510.5 parts of a silane coupling agent A, 80 parts of styrene butadiene rubber, 5 parts of methyl silicone oil, 30 parts of chlorinated paraffin oil, 30 parts of aluminum hydroxide, 10 parts of zinc borate, 4 parts of decabromodiphenylethane, 10102 parts of an anti-aging agent, 6 parts of talcum powder, 5503 parts of carbon black, 2 parts of stearic acid, 5 parts of zinc oxide, 2 parts of magnesium oxide, 25 parts of foaming agent azodicarbonamide, 5 parts of vulcanizing agent DCP, 1 part of TBPB and 2 parts of bis-tetra-2.
The foam material with the silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure is prepared by the following preparation method, and the method comprises the following steps:
s1, putting 20 parts of vinyl silicone rubber, 10 parts of precipitated white carbon black, 2 parts of hydroxyl silicone oil and 1510.5 parts of silane coupling agent into a kneader, kneading for 30min at 100 ℃, and then keeping for 60min under the condition of vacuumizing at 170 ℃ to obtain a composition A;
s2, putting 80 parts of styrene butadiene rubber, 5 parts of methyl silicone oil, 30 parts of chlorinated paraffin oil, 30 parts of aluminum hydroxide, 10 parts of zinc borate, 4 parts of decabromodiphenylethane, 10102 parts of anti-aging agent, 6 parts of talcum powder, 5503 parts of carbon black, 2 parts of stearic acid, 5 parts of zinc oxide and 2 parts of magnesium oxide into an internal mixer according to the weighed weight, and keeping the internal mixing temperature at 130 ℃ for 30min to obtain a composition B;
s3, putting the composition A into an internal mixer containing the composition B, and keeping the internal mixing temperature at 80 ℃ for 30 min; then adding 25 parts of azodicarbonamide serving as a foaming agent, 5 parts of DCP serving as a vulcanizing agent, 1 parts of TBPB, 1 parts of Biscarlet 2 parts of DCP, putting into an internal mixer, keeping the internal mixing temperature at 60 ℃ for 30min, discharging, and carrying out open mixing by using an open mill to obtain a component C, and cutting the component C into pieces with the width of 120 mm; a strip of 10mm in thickness;
s4, feeding the rubber strip into an extruder, and extruding a sheet blank through an extruder head die, wherein the feeding section of the extruder is 30 ℃, and the pressure is 0.15 MPa; the plasticizing section is at 45 ℃ and 0.35 MPa; the head section is at 55 ℃ and the pressure is 0.35 MPa; then entering a six-temperature zone controlled tunnel furnace for continuous foaming, wherein the first zone is 130 ℃, the second zone is 140 ℃, the third zone is 150 ℃, the fourth zone is 160 ℃, the fifth zone is 170 ℃ and the sixth zone is 190 ℃.
S5, cooling the product formed by foaming in the tunnel furnace by air cooling through a transmission mesh belt; and (4) feeding the cooled product to a cutting machine for cutting, adjusting an automatic meter counter, cutting according to the required size of the product, packaging and warehousing.
The obtained product is a foaming heat-insulating product with an Interpenetrating Polymer Network (IPN) structure of silica gel and synthetic rubber, and the physical property data of the product is listed in Table 2.
Example 5
The foamed material having a silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of the present example is different from example 1 in that:
changing 20 parts of vinyl silicone rubber to 30 parts; changing 10 parts of precipitated white carbon black into 15 parts; 2 parts of hydroxyl silicone oil is changed into 3 parts; changing 30 parts of chlorinated paraffin oil to 25 parts; 30 parts of aluminum hydroxide is changed to 35 parts; the amount of azodicarbonamide changed to 25 parts to 20 parts.
The same preparation method as that of example 1 was also adopted to prepare a foamed insulation product having an Interpenetrating Polymer Network (IPN) structure of silica gel and synthetic rubber, and the physical property data of the product is shown in Table 2.
Example 6
The foamed material having a silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of the present example is different from example 1 in that:
80 parts of styrene butadiene rubber is changed into 70 parts; changing 0 part of ethylene propylene diene monomer to 10 parts; the amount of azodicarbonamide was changed to 30 parts.
The preparation method of this example differs from that of example 1 in that:
in the preparation method of the embodiment, the temperatures of the six temperature zones are respectively: the first zone is 125 ℃, the second zone is 140 ℃, the third zone is 155 ℃, the fourth zone is 165 ℃, the fifth zone is 180 ℃ and the sixth zone is 190 ℃.
The physical property data of the foamed thermal insulation product with the Interpenetrating Polymer Network (IPN) structure of the silica gel and the synthetic rubber prepared by the method are listed in Table 2.
Comparative example 1
The present comparative example provides a foam material having an Interpenetrating Polymer Network (IPN) structure of silicone rubber synthetic rubber, prepared by a method comprising:
s1, putting 40 parts of nitrile rubber, 30 parts of polyvinyl chloride, 40 parts of dioctyl phthalate, 12 parts of chlorinated paraffin oil, 30 parts of aluminum hydroxide, 10 parts of zinc borate and N5503 parts of carbon black into an internal mixer, carrying out internal mixing at 140 ℃, discharging, and carrying out open mixing by an open mill to slice the mixture into material No. 1. The thickness of the film is 10mm, the width is 600mm, the length is 800mm, and the film is stacked after being cooled;
s2, respectively putting 30 parts of azodicarbonamide serving as a foaming agent and 15 parts of nitrile rubber into an internal mixer for internal mixing at 120 ℃, discharging, and rolling into a foaming agent film serving as a No. 2 material through an open mill. The thickness of the film is 10mm, the width is 600mm, the length is 800mm, and the film is stacked after being cooled.
S3, mixing 3 parts of zinc oxide, 1 part of stearic acid, 1 part of sulfur, 0.2 part of accelerator DPTT, 0.5 part of accelerator M, 6 parts of talcum powder, 2 parts of anti-aging agent and 15 parts of nitrile rubber, and rolling into a vulcanization acceleration rubber sheet by an internal mixer and an open mill to obtain a No. 3 material. The thickness of the film is 10mm, the width is 600mm, the length is 800mm, and the film is stacked after being cooled.
S4, uniformly mixing and rolling the material No. 1, the material No. 2 and the material No. 3 according to the weight required by the formula in an open mill, and cutting the mixture into pieces with the width of 120mm after the mixture is milled by the open mill; strips 10mm thick.
S5, feeding the adhesive tape into an extruder, and extruding a sheet blank through an extruder head die, wherein the feeding section of the extruder is 40 ℃, and the pressure is 0.2 MPa; the plasticizing section is at 45 ℃ and 0.4 MPa; the head section is at 40 deg.C and the pressure is 0.5 MPa. Then entering a six-temperature zone controlled tunnel furnace for continuous foaming, wherein the first zone is 120 ℃, the second zone is 130 ℃, the third zone is 140 ℃, the fourth zone is 150 ℃, the fifth zone is 160 ℃, the sixth zone is 170 ℃ and the sixth zone is 180 ℃.
Carrying out air cooling on a product formed by foaming in the tunnel furnace through a transmission mesh belt; and feeding the cooled product to a cutting machine for cutting. The physical property data of the obtained product are shown in Table 2.
Comparative example 2
A foamed insulation product was prepared using the method of comparative example 1, except that:
70 parts of nitrile rubber is changed into 70 parts of nitrile rubber, 30 parts of polyvinyl chloride is changed into 30 parts of chlorinated polyethylene, 12 parts of chlorinated paraffin oil is changed into 10 parts of chlorinated paraffin oil, 10 parts of zinc borate is changed into 6 parts of zinc borate, and 6 parts of talcum powder is changed into 4 parts of talcum powder.
The physical property data of the obtained product are shown in table 2.
Comparative example 3
The foamed material having an Interpenetrating Polymer Network (IPN) structure of silicone rubber synthetic rubber of the present comparative example was the same as in example 4, but the preparation process was different from that of example 4, and the preparation process of the present comparative example included the following steps:
s1, same as S1 of example 4;
s2, same as S2 of example 4;
s3, same as S3 of example 4;
s4, feeding the rubber strip into an extruder, and extruding a sheet blank through an extruder head die, wherein the feeding section of the extruder is 30 ℃, and the pressure is 0.15 MPa; the plasticizing section is at 45 ℃ and 0.35 MPa; the head section is at 55 ℃ and the pressure is 0.35 MPa; then entering a four-temperature zone controlled tunnel furnace for continuous foaming, wherein the first zone is 130 ℃, the second zone is 150 ℃, the third zone is 170 ℃ and the fourth zone is 190 ℃.
S5 is the same as S5 in example 4.
The obtained product is a foaming heat-insulating product with an Interpenetrating Polymer Network (IPN) structure of silica gel and synthetic rubber, and the physical property data of the product is listed in Table 2.
Comparative example 4
The foamed material having an Interpenetrating Polymer Network (IPN) structure of silicone rubber synthetic rubber of the present comparative example was the same as in example 4, but the preparation process was different from that of example 4, and the preparation process of the present comparative example included the following steps:
s1, same as S1 of example 4;
s2, same as S2 of example 4;
s3, same as S3 of example 4;
s4, feeding the rubber strip into an extruder, and extruding a sheet blank through an extruder head die, wherein the feeding section of the extruder is 30 ℃, and the pressure is 0.15 MPa; the plasticizing section is at 45 ℃ and 0.35 MPa; the head section is at 55 ℃ and the pressure is 0.35 MPa; then entering a seven-temperature zone controlled tunnel furnace for continuous foaming, wherein the first zone is 130 ℃, the second zone is 140 ℃, the third zone is 150 ℃, the fourth zone is 160 ℃, the fifth zone is 170 ℃, the sixth zone is 180 ℃ and the seventh zone is 190 ℃.
S5 is the same as S5 in example 4.
The obtained product is a foaming heat-insulating product with an Interpenetrating Polymer Network (IPN) structure of silica gel and synthetic rubber, and the physical property data of the product is listed in Table 2.
Table 1 shows the kinds and weight proportions of the components in the examples and comparative examples
TABLE 2 physical Properties of the foamed insulation articles of the examples and comparative examples
From table 2, it can be seen that:
(1) the density of the foamed insulation products of examples 4 to 6 of the present invention was 50 parts/cm3And the product prepared from the foaming material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure is durable at ultralow temperature, good in heat insulation effect and long in service life.
(2) Comparing comparative example 3 with example 4, the density of the foamed insulation product of comparative example 3 is 80 parts/cm because of the different preparation process3At-60 ℃, the thermal conductivity of the article of comparative example 3 is higher than that of example 4 and lower than that of comparative examples 1 and 2; the rebound resilience of the article of comparative example 3 is lower than that of example 4 and higher than that of comparative examples 1 and 2. This may be due to the higher density of the article. Because the higher density indicates that the material is not foamed sufficiently and is not foamed well, and the air gaps contained in the material are less, the material has higher thermal conductivity and lower rebound resilience, which indicates that the quantity of temperature zones continuously foamed in a tunnel furnace in the preparation process has influence on the performance of the product (finished product).
(3) Comparing comparative example 4 with example 4, it can be seen from table 2 that increasing the number of temperatures does not significantly increase the performance of the article, so that it is not preferable to increase the number of temperatures in view of the production cost.
In addition, the preparation method has the advantages of simple process and high production efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. The foaming material with the Interpenetrating Polymer Network (IPN) structure of the silica gel synthetic rubber is characterized by comprising, by weight, 10-40 parts of methyl vinyl silicone rubber, 5-20 parts of precipitated white carbon black, 0.5-6 parts of hydroxyl silicone oil, 0.025-0.5 part of a silane coupling agent, 60-90 parts of styrene butadiene rubber, 0-20 parts of ethylene propylene diene monomer, 20-40 parts of a plasticizer, 30-60 parts of a flame retardant, 1-3 parts of an anti-aging agent, 3-10 parts of a filler, 1-5 parts of carbon black, 0.5-3 parts of stearic acid, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 15-40 parts of a foaming agent and 3-8 parts of a vulcanizing agent.
2. The foam material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) according to claim 1, wherein the molecular weight of the methyl vinyl silicone rubber is 40 to 70 ten thousand, and the vinyl content is 0.02 to 2 percent.
3. The foam material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of claim 1, wherein the hydroxyl silicone oil has a viscosity of 5 to 50cs and a hydroxyl content of 3 to 10%, wherein the weight ratio of the hydroxyl silicone oil to the precipitated silica is 10 to 30%.
4. The foam material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of claim 1, wherein the precipitated silica has an average particle size of 1 to 20 μm and a specific surface area of 100 to 250m2/g。
5. The foam material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of claim 1, wherein the silane coupling agent comprises at least one of aminosilane coupling agent, vinyl silane coupling agent and alkyl silane coupling agent, and the weight ratio of the silane coupling agent to the precipitated silica is 0.5-2.5%.
6. The foam material with the silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of claim 1, wherein the ethylene propylene diene monomer is a terpolymer obtained by reacting ethylene, propylene and a third monomer, wherein the third monomer is ethylidene norbornene or dicyclopentadiene, and the content of the third monomer is 0.1-8%.
7. The foam with silicone rubber synthetic rubber Interpenetrating Polymer Network (IPN) structure of any of claims 1-6, wherein the plasticizer comprises at least one of methyl silicone oil, chlorinated paraffin, dioctyl adipate, dioctyl sebacate, dioctyl phthalate, naphthenic oil, paraffinic oil.
8. The foam material having a silicone rubber synthetic rubber interpenetrating polymer network structure (IPN) according to any one of claims 1 to 6, wherein the flame retardant comprises at least one of aluminum hydroxide, zinc borate or decabromodiphenylethane.
9. The foam material having an Interpenetrating Polymer Network (IPN) of silicone rubber according to any of claims 1 to 6, wherein the foaming agent is azodicarbonamide, the foaming amount is 200mL/g or more, and the average particle size is not more than 10 μm.
10. The foam with silicone rubber synthetic rubber interpenetrating polymer network structure (IPN) of any of claims 1-6, wherein the vulcanizing agent comprises at least one of dicumyl peroxide, bis-di-penta, bis-di-tetra, TBPB, BP.
11. A method for preparing a foam material with a silica gel synthetic rubber Interpenetrating Polymer Network (IPN) structure is characterized by comprising the following steps:
putting 10-40 parts of methyl vinyl silicone rubber, 5-20 parts of precipitated white carbon black, 0.5-6 parts of hydroxyl silicone oil and 0.025-0.5 part of silane coupling agent which are weighed into a kneading machine, kneading for 10-60 min at 60-120 ℃, and then carrying out vacuum heat preservation for 20-60 min at 150-180 ℃ to obtain a composition A;
putting weighed styrene butadiene rubber 60-90 parts, ethylene propylene diene monomer 0-20 parts, plasticizer 20-40 parts, flame retardant 30-60 parts, anti-aging agent 1-3 parts, filler 3-10 parts, carbon black 1-5 parts, stearic acid 0.5-3 parts, zinc oxide 3-8 parts and magnesium oxide 1-3 parts into an internal mixer, and internally mixing at 110-150 ℃ for 20-40 min to obtain a composition B;
putting the composition A into an internal mixer, internally mixing the composition A and the composition B for 20-60 min at 50-100 ℃, then adding 15-40 parts of foaming agent and 3-8 parts of vulcanizing agent into the internal mixer, continuously internally mixing for 10-30 min at 30-60 ℃, discharging, and milling to obtain a component C;
and (3) putting the component C into an extruder, conveying the extruded component C into a tunnel furnace for continuous foaming, and cooling after foaming to obtain the foaming material with the Interpenetrating Polymer Network (IPN) structure of the silica gel synthetic rubber.
12. The method of preparing a foam material having an Interpenetrating Polymer Network (IPN) of silicone rubber synthetic rubber according to claim 11, wherein,
the temperature of the feeding section of the extruder is 20-40 ℃, and the pressure is 0.1-0.2 MPa; the plasticizing section is at 40-50 ℃ and 0.3-0.4 MPa; the head section is 50-70 ℃ and the pressure is 0.3-0.4 Mpa.
13. The method of preparing a foam material having an Interpenetrating Polymer Network (IPN) of silicone rubber synthetic rubber according to claim 11, wherein,
the tunnel furnace is divided into six temperature zones, wherein the first zone is 130-140 ℃, the second zone is 140-150 ℃, the third zone is 150-160 ℃, the fourth zone is 160-170 ℃, the fifth zone is 170-180 ℃, and the sixth zone is 180-190 ℃.
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