JP2005097414A - 耐酸性に優れた加硫用ゴム組成物およびその加硫ゴム材料 - Google Patents
耐酸性に優れた加硫用ゴム組成物およびその加硫ゴム材料 Download PDFInfo
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- JP2005097414A JP2005097414A JP2003332724A JP2003332724A JP2005097414A JP 2005097414 A JP2005097414 A JP 2005097414A JP 2003332724 A JP2003332724 A JP 2003332724A JP 2003332724 A JP2003332724 A JP 2003332724A JP 2005097414 A JP2005097414 A JP 2005097414A
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- Prior art keywords
- rubber
- acid resistance
- acid
- vulcanization
- rubber composition
- Prior art date
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 61
- 239000005060 rubber Substances 0.000 title claims abstract description 60
- 239000002253 acid Substances 0.000 title claims abstract description 54
- 239000000203 mixture Substances 0.000 title claims abstract description 36
- 238000004073 vulcanization Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title claims description 13
- 239000004636 vulcanized rubber Substances 0.000 title claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims description 18
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 6
- 229930185605 Bisphenol Natural products 0.000 claims description 5
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 5
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- 150000002736 metal compounds Chemical class 0.000 claims description 5
- HAZJTCQWIDBCCE-UHFFFAOYSA-N 1h-triazine-6-thione Chemical class SC1=CC=NN=N1 HAZJTCQWIDBCCE-UHFFFAOYSA-N 0.000 claims description 4
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical class OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
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- 230000000052 comparative effect Effects 0.000 description 13
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- 239000007864 aqueous solution Substances 0.000 description 11
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- 239000000370 acceptor Substances 0.000 description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 8
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- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
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- 150000008117 polysulfides Polymers 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 4
- 229920001897 terpolymer Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
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- 241001441571 Hiodontidae Species 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
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- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- GKIPXFAANLTWBM-UHFFFAOYSA-N epibromohydrin Chemical compound BrCC1CO1 GKIPXFAANLTWBM-UHFFFAOYSA-N 0.000 description 2
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- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
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- 229910017604 nitric acid Inorganic materials 0.000 description 2
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- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 2
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- 229910052717 sulfur Inorganic materials 0.000 description 2
- 150000004867 thiadiazoles Chemical class 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- JAEZSIYNWDWMMN-UHFFFAOYSA-N 1,1,3-trimethylthiourea Chemical compound CNC(=S)N(C)C JAEZSIYNWDWMMN-UHFFFAOYSA-N 0.000 description 1
- BIGYLAKFCGVRAN-UHFFFAOYSA-N 1,3,4-thiadiazolidine-2,5-dithione Chemical compound S=C1NNC(=S)S1 BIGYLAKFCGVRAN-UHFFFAOYSA-N 0.000 description 1
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
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- BGTGTLIFRSYPQQ-UHFFFAOYSA-N 1-(diethylamino)-3-sulfanyl-2,4-dihydrotriazine-5-thiol Chemical compound CCN(CC)N1NN(S)CC(S)=C1 BGTGTLIFRSYPQQ-UHFFFAOYSA-N 0.000 description 1
- ZPOXOMHDDJHWEB-UHFFFAOYSA-N 1-(hexylamino)-3-sulfanyl-2,4-dihydrotriazine-5-thiol Chemical compound CCCCCCNN1NN(S)CC(S)=C1 ZPOXOMHDDJHWEB-UHFFFAOYSA-N 0.000 description 1
- FAVUIKIZSWDVTG-UHFFFAOYSA-N 1-anilino-3-sulfanyl-2,4-dihydrotriazine-5-thiol Chemical compound N1N(S)CC(S)=CN1NC1=CC=CC=C1 FAVUIKIZSWDVTG-UHFFFAOYSA-N 0.000 description 1
- INQXGZFDGDSRIF-UHFFFAOYSA-N 1h-quinoxaline-2-thione Chemical compound C1=CC=CC2=NC(S)=CN=C21 INQXGZFDGDSRIF-UHFFFAOYSA-N 0.000 description 1
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- PYSZASIZWHHPHJ-UHFFFAOYSA-L calcium;phthalate Chemical compound [Ca+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O PYSZASIZWHHPHJ-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
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- 238000000354 decomposition reaction Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 1
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- ZXSBDSGRQIWJPM-UHFFFAOYSA-N dimethylcarbamothioic s-acid Chemical class CN(C)C(S)=O ZXSBDSGRQIWJPM-UHFFFAOYSA-N 0.000 description 1
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- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- OFHMODDLBXETIK-UHFFFAOYSA-N methyl 2,3-dichloropropanoate Chemical compound COC(=O)C(Cl)CCl OFHMODDLBXETIK-UHFFFAOYSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- RLRHPCKWSXWKBG-UHFFFAOYSA-N n-(2-azaniumylethyl)carbamate Chemical compound NCCNC(O)=O RLRHPCKWSXWKBG-UHFFFAOYSA-N 0.000 description 1
- ATPFMBHTMKBVLS-UHFFFAOYSA-N n-[6-(cinnamylideneamino)hexyl]-3-phenylprop-2-en-1-imine Chemical compound C=1C=CC=CC=1C=CC=NCCCCCCN=CC=CC1=CC=CC=C1 ATPFMBHTMKBVLS-UHFFFAOYSA-N 0.000 description 1
- JFOJYGMDZRCSPA-UHFFFAOYSA-J octadecanoate;tin(4+) Chemical compound [Sn+4].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O JFOJYGMDZRCSPA-UHFFFAOYSA-J 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 150000002924 oxiranes Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000004714 phosphonium salts Chemical group 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert-Butyl hydroperoxide Substances CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- AUZONCFQVSMFAP-UHFFFAOYSA-N tetraethylthiuram disulfide Natural products CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- XWKBMOUUGHARTI-UHFFFAOYSA-N tricalcium;diphosphite Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])[O-].[O-]P([O-])[O-] XWKBMOUUGHARTI-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
【解決手段】(a)エピハロヒドリン系ゴム、(b)湿式法シリカ、(c)非鉛系受酸剤、および(d)加硫剤からなり、(b)湿式法シリカの配合量が、エピハロヒドリン系ゴム100重量部に対して、15〜35重量部であることを特徴とする耐酸性に優れた加硫用ゴム組成物、あるいは更に(e)多価アルコールを配合する耐酸性に優れた加硫用ゴム組成物。
【選択図】なし
Description
(b)湿式法シリカの配合量が、エピハロヒドリン系ゴム100重量部に対して、15〜35重量部であることを特徴とする耐酸性に優れた加硫用ゴム組成物、あるいは更に(e)多価アルコールを配合することを特徴とする耐酸性に優れた加硫用ゴム組成物、これらの組成物を加硫してなる加硫ゴム材料、ならびに該加硫ゴム材料よりなる自動車用ゴム部品に関する。
酸性水溶液の酸の種類は特に限定されるものではないが、例えば蟻酸、酢酸、クエン酸などの有機酸や、塩酸、硝酸、硫酸、亜硫酸、炭酸などの無機酸、あるいはこれらの酸の2種以上の混合物が挙げられる。また酸性水溶液としては例えば、濃度1N以下の有機酸及び/または無機酸の水溶液で温度40〜90℃の酸水溶液である。したがってこのエピハロヒドリン系ゴム製品は酸性水溶液と接液するようなゴム部材、例えば各種ホース、異形押出製品、型物製品、ガスケット、パッキンなどの用途に極めて有用である。
(比較例3参照)
MgXZnYAlZ(OH)(2(X+Y)+3Z-2)CO3・wH2O (3)
[式中、xとy はそれぞれx+y=1〜10の関係を有する0〜10の実数、zは1〜5の実数、wは0〜10の実数をそれぞれ示す]で表わされる。一般式(5)で表されるハイドロタルサイト類の例として、
Mg4.5 Al2 (OH)13CO3 ・3.5H2 O
Mg4.5 Al2 (OH)13CO3
Mg4 Al2 (OH)12CO3 ・3.5H2 O
Mg6 Al2 (OH)16CO3 ・4H2 O
Mg5 Al2 (OH)14CO3 ・4H2 O
Mg3 Al2 (OH)10CO3 ・1.7H2 O
Mg3 ZnAl2 (OH)12CO3 ・wH2 O
Mg3 ZnAl2 (OH)12CO3
等を挙げることができる。
下記表1に示す配合で各材料をニーダーおよびオープンロールで混練し、未加硫ゴムシートを作製した。得られた未加硫ゴムシートを用い、JIS K6300に定めるムーニースコーチ試験を行った。また同じく得られた未加硫ゴムシートを170℃で15分プレス加硫し、2mm厚の一次加硫物を得た。さらにこれをエア・オーブンで150℃で2時間加熱し、二次加硫物を得た。得られた二次加硫物を用い、JIS K 6251に準じて引張試験(常態物性)を、JIS K 6258に準じて耐酸性試験の評価を行った。
表3の配合により実施例1と同様にして各試験を行い得られた結果を表4に示す。
なお圧縮永久歪試験は、得られた未加硫ゴムシートを試験片作製用金型を用いて170℃で20分プレス加硫し、直径約29mm、高さ約12.5mmの円柱状試験片一次加硫物を得た。さらにこれをエア・オーブンで150℃で2時間加熱し二次加硫物を得た。得られた二次加硫物を用い、JIS K 6262記載の方法に準じて試験を行った。
表5の配合により実施例1と同様にして各試験を行い、得られた結果を表6に示す。耐水性試験で使用した酸水溶液の組成は下記の通りである。
蟻酸14ml、酢酸15ml、塩酸1ml、硝酸11ml、硫酸1mlに純水を加えて1000mlとした酸水溶液を原液とし、この原液12.5mlを純水で1000mlに希釈したものを耐酸性試験用の酸水溶液とした。
Claims (8)
- (a)エピハロヒドリン系ゴム、(b)湿式法シリカ、(c)非鉛系受酸剤、および(d)加硫剤からなり、
(b)湿式法シリカの配合量が、エピハロヒドリン系ゴム100重量部に対して、15〜35重量部であることを特徴とする耐酸性に優れた加硫用ゴム組成物。 - 更に(e)多価アルコールを配合することを特徴とする請求項1に記載の耐酸性に優れた加硫用ゴム組成物。
- (e)多価アルコールが、グリコール誘導体、グリセリン誘導体およびペンタエリスリトール誘導体よりなる群から選ばれたものである請求項2に記載の耐酸性に優れた加硫用ゴム組成物。
- 受酸剤が非鉛系の金属化合物および/または無機マイクロポーラス・クリスタルであることを特徴とする請求項1〜3のいずれかに記載の耐酸性に優れた加硫用ゴム組成物。
- 受酸剤がマグネシア、炭酸カルシウム、消石灰、生石灰および合成ハイドロタルサイトよりなる群から選ばれたものである請求項1〜3のいずれかに記載の耐酸性に優れた加硫用ゴム組成物。
- 加硫剤がチオウレア類、キノキサリン類、メルカプトトリアジン類およびビスフェノール類よりなる群から選ばれたものであることを特徴とする請求項1〜5のいずれかに記載の耐酸性に優れた加硫用ゴム組成物。
- 請求項1〜6のいずれかに記載の加硫用ゴム組成物を加硫してなる耐酸性に優れた加硫ゴム材料。
- 請求項7に記載の加硫ゴム材料よりなる耐酸性に優れた自動車用ゴム部品。
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