JP5657927B2 - サイドウォール用ゴム組成物及び空気入りタイヤ - Google Patents
サイドウォール用ゴム組成物及び空気入りタイヤ Download PDFInfo
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- JP5657927B2 JP5657927B2 JP2010140857A JP2010140857A JP5657927B2 JP 5657927 B2 JP5657927 B2 JP 5657927B2 JP 2010140857 A JP2010140857 A JP 2010140857A JP 2010140857 A JP2010140857 A JP 2010140857A JP 5657927 B2 JP5657927 B2 JP 5657927B2
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- 229920001971 elastomer Polymers 0.000 title claims description 79
- 239000005060 rubber Substances 0.000 title claims description 79
- 239000000203 mixture Substances 0.000 title claims description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 68
- 239000005062 Polybutadiene Substances 0.000 claims description 45
- 229920002857 polybutadiene Polymers 0.000 claims description 45
- 239000000377 silicon dioxide Substances 0.000 claims description 34
- 150000001875 compounds Chemical class 0.000 claims description 33
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 22
- 229910052717 sulfur Inorganic materials 0.000 claims description 22
- 239000011593 sulfur Substances 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- 125000002947 alkylene group Chemical group 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 125000003545 alkoxy group Chemical group 0.000 claims description 7
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 claims description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 4
- 125000000962 organic group Chemical group 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 125000004036 acetal group Chemical group 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 28
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- 239000000446 fuel Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 15
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- 238000000034 method Methods 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
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- 239000003795 chemical substances by application Substances 0.000 description 8
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- 238000004073 vulcanization Methods 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 6
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- 125000003118 aryl group Chemical group 0.000 description 5
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 5
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- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
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- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 3
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 2
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 2
- ZEUAKOUTLQUQDN-UHFFFAOYSA-N 6-(dibenzylcarbamothioyldisulfanyl)hexylsulfanyl n,n-dibenzylcarbamodithioate Chemical compound C=1C=CC=CC=1CN(CC=1C=CC=CC=1)C(=S)SSCCCCCCSSC(=S)N(CC=1C=CC=CC=1)CC1=CC=CC=C1 ZEUAKOUTLQUQDN-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 235000019482 Palm oil Nutrition 0.000 description 2
- 229920005683 SIBR Polymers 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 125000004104 aryloxy group Chemical group 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 125000000000 cycloalkoxy group Chemical group 0.000 description 2
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 2
- 229920003244 diene elastomer Polymers 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000002540 palm oil Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000008159 sesame oil Substances 0.000 description 2
- 235000011803 sesame oil Nutrition 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- 239000003981 vehicle Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- NILZPUMJDXSYEY-UHFFFAOYSA-N 1-(dimethoxymethylsilyl)-n,n-dimethylmethanamine Chemical compound COC(OC)[SiH2]CN(C)C NILZPUMJDXSYEY-UHFFFAOYSA-N 0.000 description 1
- DLOSDQIBVXBWTB-UHFFFAOYSA-N 1-[dimethyl(propyl)silyl]oxyethanamine Chemical compound CCC[Si](C)(C)OC(C)N DLOSDQIBVXBWTB-UHFFFAOYSA-N 0.000 description 1
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
- YZZWTUACUFQJLH-UHFFFAOYSA-N 2-(dibenzylcarbamothioyldisulfanyl)ethylsulfanyl n,n-dibenzylcarbamodithioate Chemical compound C=1C=CC=CC=1CN(CC=1C=CC=CC=1)C(=S)SSCCSSC(=S)N(CC=1C=CC=CC=1)CC1=CC=CC=C1 YZZWTUACUFQJLH-UHFFFAOYSA-N 0.000 description 1
- QGLPFLXXBPHSPJ-UHFFFAOYSA-N 2-(diethoxymethylsilyl)-N,N-diethylethanamine Chemical compound C(C)N(CC[SiH2]C(OCC)OCC)CC QGLPFLXXBPHSPJ-UHFFFAOYSA-N 0.000 description 1
- KATPBGHRCWDNAQ-UHFFFAOYSA-N 2-(diethoxymethylsilyl)-N,N-dimethylethanamine Chemical compound CN(CC[SiH2]C(OCC)OCC)C KATPBGHRCWDNAQ-UHFFFAOYSA-N 0.000 description 1
- NRUFUSDXXISNBI-UHFFFAOYSA-N 2-(dimethoxymethylsilyl)-N,N-diethylethanamine Chemical compound C(C)N(CC[SiH2]C(OC)OC)CC NRUFUSDXXISNBI-UHFFFAOYSA-N 0.000 description 1
- LJALELTXUDKZQX-UHFFFAOYSA-N 2-[dimethoxy(methyl)silyl]-n,n-dimethylethanamine Chemical compound CO[Si](C)(OC)CCN(C)C LJALELTXUDKZQX-UHFFFAOYSA-N 0.000 description 1
- IKBFHCBHLOZDKH-UHFFFAOYSA-N 2-chloroethyl(triethoxy)silane Chemical compound CCO[Si](CCCl)(OCC)OCC IKBFHCBHLOZDKH-UHFFFAOYSA-N 0.000 description 1
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- HBDDTIOFOIOOFL-UHFFFAOYSA-N 3-(diethoxymethylsilyl)-n,n-diethylpropan-1-amine Chemical compound CCOC(OCC)[SiH2]CCCN(CC)CC HBDDTIOFOIOOFL-UHFFFAOYSA-N 0.000 description 1
- GBCNIMMWOPWZEG-UHFFFAOYSA-N 3-(diethoxymethylsilyl)-n,n-dimethylpropan-1-amine Chemical compound CCOC(OCC)[SiH2]CCCN(C)C GBCNIMMWOPWZEG-UHFFFAOYSA-N 0.000 description 1
- YXADAMGEPNZUDS-UHFFFAOYSA-N 3-(dimethoxymethylsilyl)-N,N-diethylpropan-1-amine Chemical compound C(C)N(CCC[SiH2]C(OC)OC)CC YXADAMGEPNZUDS-UHFFFAOYSA-N 0.000 description 1
- ULRCHFVDUCOKTE-UHFFFAOYSA-N 3-[3-aminopropyl(diethoxy)silyl]oxybutan-1-amine Chemical compound NCCC[Si](OCC)(OCC)OC(C)CCN ULRCHFVDUCOKTE-UHFFFAOYSA-N 0.000 description 1
- RWWSGKAKVIHPHX-UHFFFAOYSA-N 3-[butoxy(dimethyl)silyl]propan-1-amine Chemical compound CCCCO[Si](C)(C)CCCN RWWSGKAKVIHPHX-UHFFFAOYSA-N 0.000 description 1
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- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- OTARVPUIYXHRRB-UHFFFAOYSA-N diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](C)(OCC)CCCOCC1CO1 OTARVPUIYXHRRB-UHFFFAOYSA-N 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- 125000005745 ethoxymethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])* 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- BSDJDVJJSQFGOW-UHFFFAOYSA-N n,n-diethyl-2-triethoxysilylethanamine Chemical compound CCO[Si](OCC)(OCC)CCN(CC)CC BSDJDVJJSQFGOW-UHFFFAOYSA-N 0.000 description 1
- QXQSYCPFYFZNGY-UHFFFAOYSA-N n,n-diethyl-2-trimethoxysilylethanamine Chemical compound CCN(CC)CC[Si](OC)(OC)OC QXQSYCPFYFZNGY-UHFFFAOYSA-N 0.000 description 1
- ZLDHYRXZZNDOKU-UHFFFAOYSA-N n,n-diethyl-3-trimethoxysilylpropan-1-amine Chemical compound CCN(CC)CCC[Si](OC)(OC)OC ZLDHYRXZZNDOKU-UHFFFAOYSA-N 0.000 description 1
- XQGKZMWBTSVYSS-UHFFFAOYSA-N n,n-diethyl-4-trimethoxysilylbutan-1-amine Chemical compound CCN(CC)CCCC[Si](OC)(OC)OC XQGKZMWBTSVYSS-UHFFFAOYSA-N 0.000 description 1
- WYMSENKWVCCQGJ-UHFFFAOYSA-N n,n-dimethyl-1-triethoxysilylmethanamine Chemical compound CCO[Si](CN(C)C)(OCC)OCC WYMSENKWVCCQGJ-UHFFFAOYSA-N 0.000 description 1
- DFVIRQNGJPSMQP-UHFFFAOYSA-N n,n-dimethyl-1-trimethoxysilylmethanamine Chemical compound CO[Si](OC)(OC)CN(C)C DFVIRQNGJPSMQP-UHFFFAOYSA-N 0.000 description 1
- XTOSZDRAGWRSBP-UHFFFAOYSA-N n,n-dimethyl-2-triethoxysilylethanamine Chemical compound CCO[Si](OCC)(OCC)CCN(C)C XTOSZDRAGWRSBP-UHFFFAOYSA-N 0.000 description 1
- AQIQPUUNTCVHBS-UHFFFAOYSA-N n,n-dimethyl-3-triethoxysilylpropan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCN(C)C AQIQPUUNTCVHBS-UHFFFAOYSA-N 0.000 description 1
- QIOYHIUHPGORLS-UHFFFAOYSA-N n,n-dimethyl-3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN(C)C QIOYHIUHPGORLS-UHFFFAOYSA-N 0.000 description 1
- QVUHBALXLZYVMB-UHFFFAOYSA-N n,n-dimethyl-4-triethoxysilylbutan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCCN(C)C QVUHBALXLZYVMB-UHFFFAOYSA-N 0.000 description 1
- UWUDIBKKKUZPQH-UHFFFAOYSA-N n,n-dimethyl-4-trimethoxysilylbutan-1-amine Chemical compound CO[Si](OC)(OC)CCCCN(C)C UWUDIBKKKUZPQH-UHFFFAOYSA-N 0.000 description 1
- 125000006606 n-butoxy group Chemical group 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- UMXXGDJOCQSQBV-UHFFFAOYSA-N n-ethyl-n-(triethoxysilylmethyl)ethanamine Chemical compound CCO[Si](OCC)(OCC)CN(CC)CC UMXXGDJOCQSQBV-UHFFFAOYSA-N 0.000 description 1
- KPIIDEIURMTGCD-UHFFFAOYSA-N n-ethyl-n-(trimethoxysilylmethyl)ethanamine Chemical compound CCN(CC)C[Si](OC)(OC)OC KPIIDEIURMTGCD-UHFFFAOYSA-N 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000010466 nut oil Substances 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000005767 propoxymethyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])[#8]C([H])([H])* 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000008165 rice bran oil Substances 0.000 description 1
- GPNLWUFFWOYKLP-UHFFFAOYSA-N s-(1,3-benzothiazol-2-yl)thiohydroxylamine Chemical compound C1=CC=C2SC(SN)=NC2=C1 GPNLWUFFWOYKLP-UHFFFAOYSA-N 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 229940052367 sulfur,colloidal Drugs 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- FPBXRRDHCADTAL-UHFFFAOYSA-N triethoxy(3-nitropropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC[N+]([O-])=O FPBXRRDHCADTAL-UHFFFAOYSA-N 0.000 description 1
- ASAOXGWSIOQTDI-UHFFFAOYSA-N triethoxy-[2-(2-triethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCSSSSCC[Si](OCC)(OCC)OCC ASAOXGWSIOQTDI-UHFFFAOYSA-N 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- QPPXVBLDIDEHBA-UHFFFAOYSA-N trimethoxy(3-nitropropyl)silane Chemical compound CO[Si](OC)(OC)CCC[N+]([O-])=O QPPXVBLDIDEHBA-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
R6−S−S−A−S−S−R7 (2)
(式(2)において、Aは分岐若しくは非分岐の炭素数2〜10のアルキレン基、R6及びR7は、同一若しくは異なって、チッ素原子を含む1価の有機基を表す。)
なお、ビニル含量(1,2−結合ブタジエン単位量)は、赤外吸収スペクトル分析法によって測定できる。
なお、シリカの窒素吸着比表面積は、ASTM D3037−81に準じてBET法で測定される値である。
本発明では、低燃費性の向上のためにフィラー(シリカ)の配合量を減らす必要が無いため(シリカの含有量を上記量とできるため)、強度が低下し、破壊強度が悪化することを防止できる。
R6−S−S−A−S−S−R7 (2)
(式(2)において、Aは分岐若しくは非分岐の炭素数2〜10のアルキレン基、R6及びR7は、同一若しくは異なって、チッ素原子を含む1価の有機基を表す。)
Aのアルキレン基としては、非分岐のアルキレン基が好ましい。
NR:RSS#3
BR1:宇部興産(株)製のBR130B(シス含量:96質量%)
BR2:住友化学(株)製の変性ブタジエンゴム(変性BR)(ビニル含量:15質量%、上記式(1)のR1、R2及びR3=−OCH3、R4及びR5=−CH2CH3、n=3の化合物により変性)
カーボンブラック:三菱化学(株)製のダイヤブラックN550(N2SA:42m2/g)
シリカ:Rhodia社製のZeosil1115MP(チッ素吸着比表面積(N2SA):115m2/g)
シランカップリング剤:デグッサ社製のSi69(ビス(3−トリエトキシシリルプロピル)テトラスルフィド)
プロセスオイル:ジャパンエナジー社製のプロセスX−140(芳香族系プロセスオイル)
ワックス:大内新興化学工業(株)製のサンノワックスN
老化防止剤:住友化学(株)製のアンチゲン6C(N−(1,3−ジメチルブチル)−N’−フェニル−p−フェニレンジアミン)
ステアリン酸:日油(株)製の椿
酸化亜鉛:三井金属鉱業(株)製の酸化亜鉛2種
硫黄:軽井沢硫黄(株)製の粉末硫黄
加硫促進剤CZ:大内新興化学工業(株)製のノクセラーCZ(N−シクロヘキシル−2−ベンゾチアゾリルスルフェンアミド)
KA9188:バイエル社製のVulcurenKA9188(1,6−ビス(N,N’−ジベンジルチオカルバモイルジチオ)ヘキサン)
表1に示す配合処方にしたがい、1.7Lバンバリーミキサーを用いて、硫黄、加硫促進剤、及びKA9188以外の材料を150℃の条件下で3分間混練りし、混練り物を得た。次に、得られた混練り物に硫黄、加硫促進剤、及びKA9188を添加し、オープンロールを用いて、50℃の条件下で5分間練り込み、未加硫ゴム組成物を得た。得られた未加硫ゴム組成物を170℃で12分間プレス加硫し、加硫ゴム組成物を得た。
得られた未加硫ゴム組成物をサイドウォール形状に成形して、他のタイヤ部材とはりあわせ、170℃で12分間25kgfの条件下で加硫することにより、試験用タイヤ(タイヤサイズ:195/65R15)を作製した。
得られた加硫ゴム組成物を80℃のオーブンで168時間熱劣化(老化)させた。得られたものを熱劣化サンプル(熱劣化後の耐屈曲亀裂性テストサンプル)とした。
JIS K6300に準じて、130℃で所定の未加硫ゴム組成物のムーニー粘度を測定した。測定結果を、比較例1を100として、下記計算式により指数表示した。指数が大きいほど粘度が低く、加工が容易であることを示す。
(ムーニー粘度指数)=(比較例1のムーニー粘度)/(各配合のムーニー粘度)×100
粘弾性スペクトロメーターVES((株)岩本製作所製)を用いて、温度70℃、初期歪み10%、動歪み2%の条件下で、各配合の加硫ゴム組成物のtanδを測定し、比較例1のtanδを100として、下記計算式により指数表示した。指数が大きいほど、転がり抵抗特性(低燃費性)が優れている。
(転がり抵抗指数)=(比較例1のtanδ)/(各配合のtanδ)×100
加硫ゴム組成物について、JIS K6251に準じて3号ダンベルを用いて引張り試験を実施し、破断強度(TB)を破断時伸び(EB)(%)を測定した。TB×EB/2の数値を破壊強度とした。比較例1の破壊強度を100として、下記計算式により指数表示した。指数が大きいほど破壊強度に優れる。
(破壊強度指数)=(各配合の破壊強度)/(比較例1の破壊強度)×100
試験用タイヤを車輌(国産FF2000cc)の全輪に装着してテストコースを実車走行し、ドライバーの官能評価により操縦安定性を評価した。その際に、10点を満点とし、比較例1の操縦安定性を6点としてそれぞれ相対評価を行った。数値が大きいほど、操縦安定性に優れることを示す。
加硫ゴム組成物を用い、JIS−K−6260「加硫ゴム及び熱可塑性ゴム−デマッチャ屈曲亀裂試験方法」に基づいてサンプルを作製し、屈曲亀裂成長試験を行い、70%伸張を100万回繰り返してサンプルを屈曲させた後、発生した亀裂の長さを測定した。
そして、比較例1の測定値(長さ)を100とし、下記計算式により指数表示した。指数が大きいほど、亀裂の成長が抑制され、耐屈曲亀裂性に優れることを示す。
(耐屈曲亀裂性指数)=(比較例1の測定値)/(各配合の測定値)×100
また、熱劣化サンプルを用いて同様の試験を行い、下記計算式により指数表示した。
指数が大きいほど、亀裂の成長が抑制され、熱劣化後の耐屈曲亀裂性(耐久性)に優れることを示す。
(熱劣化後の耐屈曲亀裂性指数)=(比較例1の測定値)/(各配合の測定値)×100
Claims (4)
- 下記式(1)で表される化合物により変性されたブタジエンゴムを含むゴム成分と、
チッ素吸着比表面積40〜125m2/gのシリカと、
硫黄と、
下記式(2)で表される化合物とを含み、
前記ゴム成分100質量%中の前記式(1)で表される化合物により変性されたブタジエンゴムの含有量は、5質量%以上、
前記ゴム成分100質量部に対して、前記シリカの含有量が30〜150質量部、前記硫黄の含有量が0.1〜20質量部、前記式(2)で表される化合物の含有量が0.2〜20質量部であるサイドウォール用ゴム組成物。
R6−S−S−A−S−S−R7 (2)
(式(2)において、Aは分岐若しくは非分岐の炭素数2〜10のアルキレン基、R6及びR7は、同一若しくは異なって、チッ素原子を含む1価の有機基を表す。) - 前記ゴム成分100質量部に対して、オイルの含有量が2〜25質量部である請求項1記載のサイドウォール用ゴム組成物。
- 前記ゴム成分がイソプレン系ゴムを含む請求項1又は2記載のサイドウォール用ゴム組成物。
- 請求項1〜3のいずれかに記載のゴム組成物を用いて作製したサイドウォールを有する空気入りタイヤ。
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JP5065651B2 (ja) * | 2006-10-30 | 2012-11-07 | 東洋ゴム工業株式会社 | タイヤサイドウォール用ゴム組成物 |
JP4638933B2 (ja) * | 2007-12-07 | 2011-02-23 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物 |
JP2009214700A (ja) * | 2008-03-10 | 2009-09-24 | Bridgestone Corp | ゴム組成物及びそれを用いた空気入りタイヤ |
JP4806438B2 (ja) * | 2008-10-08 | 2011-11-02 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
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