JP5459156B2 - 防振ゴム組成物及び防振ゴム - Google Patents
防振ゴム組成物及び防振ゴム Download PDFInfo
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- JP5459156B2 JP5459156B2 JP2010207746A JP2010207746A JP5459156B2 JP 5459156 B2 JP5459156 B2 JP 5459156B2 JP 2010207746 A JP2010207746 A JP 2010207746A JP 2010207746 A JP2010207746 A JP 2010207746A JP 5459156 B2 JP5459156 B2 JP 5459156B2
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- peroxide
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- JUIBLDFFVYKUAC-UHFFFAOYSA-N [5-(2-ethylhexanoylperoxy)-2,5-dimethylhexan-2-yl] 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C(CC)CCCC JUIBLDFFVYKUAC-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
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- 125000000217 alkyl group Chemical group 0.000 description 1
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- RJNQAWYDOFQOFG-UHFFFAOYSA-N benzoyl 3-methylbenzenecarboperoxoate Chemical compound CC1=CC=CC(C(=O)OOC(=O)C=2C=CC=CC=2)=C1 RJNQAWYDOFQOFG-UHFFFAOYSA-N 0.000 description 1
- GONOPSZTUGRENK-UHFFFAOYSA-N benzyl(trichloro)silane Chemical compound Cl[Si](Cl)(Cl)CC1=CC=CC=C1 GONOPSZTUGRENK-UHFFFAOYSA-N 0.000 description 1
- YFRNYWVKHCQRPE-UHFFFAOYSA-N buta-1,3-diene;prop-2-enoic acid Chemical compound C=CC=C.OC(=O)C=C YFRNYWVKHCQRPE-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- NSGQRLUGQNBHLD-UHFFFAOYSA-N butan-2-yl butan-2-yloxycarbonyloxy carbonate Chemical compound CCC(C)OC(=O)OOC(=O)OC(C)CC NSGQRLUGQNBHLD-UHFFFAOYSA-N 0.000 description 1
- BXIQXYOPGBXIEM-UHFFFAOYSA-N butyl 4,4-bis(tert-butylperoxy)pentanoate Chemical compound CCCCOC(=O)CCC(C)(OOC(C)(C)C)OOC(C)(C)C BXIQXYOPGBXIEM-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- SPTHWAJJMLCAQF-UHFFFAOYSA-M ctk4f8481 Chemical compound [O-]O.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-M 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- VZFUCHSFHOYXIS-UHFFFAOYSA-N cycloheptane carboxylic acid Natural products OC(=O)C1CCCCCC1 VZFUCHSFHOYXIS-UHFFFAOYSA-N 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000018109 developmental process Effects 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
- 150000001993 dienes Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 229940067592 ethyl palmitate Drugs 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009472 formulation Methods 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
- 125000005843 halogen group Chemical group 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- RQFLGKYCYMMRMC-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O.CCCCCCCCCCCCCCCCCC(O)=O RQFLGKYCYMMRMC-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 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
- 239000010734 process oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 description 1
- YPVDWEHVCUBACK-UHFFFAOYSA-N propoxycarbonyloxy propyl carbonate Chemical compound CCCOC(=O)OOC(=O)OCCC YPVDWEHVCUBACK-UHFFFAOYSA-N 0.000 description 1
- BTAXGNQLYFDKEF-UHFFFAOYSA-N propyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCC BTAXGNQLYFDKEF-UHFFFAOYSA-N 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- NMOALOSNPWTWRH-UHFFFAOYSA-N tert-butyl 7,7-dimethyloctaneperoxoate Chemical compound CC(C)(C)CCCCCC(=O)OOC(C)(C)C NMOALOSNPWTWRH-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 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
- 238000003878 thermal aging Methods 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
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Landscapes
- Vibration Prevention Devices (AREA)
- Springs (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
[1]ゴム成分として天然ゴム(NR)とエチレン・プロピレン・ジエンゴム(EPDM)とを、質量比でNR/EPDM=70/30〜45/55の割合で含むと共に、加硫剤として過酸化物を含み、かつ共架橋剤として、(A)アクリル酸亜鉛又はメタクリル酸亜鉛、及び(B)シトラコンイミド化合物を含むことを特徴とする防振ゴム組成物。
[2](B)シトラコンイミド化合物がビスシトラコンイミド類である[1]記載の防振ゴム組成物。
[3]ゴム成分100質量部に対する(A)アクリル酸亜鉛又はメタクリル酸亜鉛の配合量をX質量部、(B)シトラコンイミド化合物の配合量をY質量部、共架橋剤の総質量部をX+Y=Z質量部としたとき、
0.5≦X≦4.0
0.5≦Y≦6.0
5.0≦Z≦7.0
を満たす[1]又は[2]記載の防振ゴム組成物。
[4][1]、[2]又は[3]記載のゴム組成物を硬化させてなる防振ゴム。
下記表1に示す配合組成で混練しJISに準拠したサンプル形状に加硫し、硬度(Hd)、引張伸び(Eb)、引張強さ(Tb)、耐熱性(熱老化試験)、圧縮永久歪み(%)、静バネ定数(Ks)、動倍率(Kd/Ks)を下記JIS規格に準拠して測定を行い評価した。その結果を表1に記載した。
JIS K 6253(タイプA)に準拠
[引張伸び(Eb)]
JIS K 6251に準拠した。Ebが400%以上であると「良好」と判断した。
[引張強さ(Tb)]
JIS K 6251に準拠した。Tbが10MPa以上であると「良好」と判断した。
[耐熱性(熱老化試験)]
JIS K 6257に準拠し、120℃,96時間の条件下に試験片を放置した後、上記硬度(Hd)、引張伸び(Eb)、引張強さ(Tb)を測定した。
また、硬度(Hd)については変化値ΔHdを、引張伸び(Eb)及び引張強さ(Tb)については保持率(%)を示した。Eb保持率の目標値を90%以上,Tb保持率の目標値を80%以上とした。
[圧縮永久歪み]
JIS K 6262に準拠した。圧縮永久歪み(CS)25%以内を目標値とした。
[静バネ定数(Ks),動バネ定数(Kd)及び動倍率(Kd/Ks)]
JIS K 6385に準拠し、Kdは100Hzで測定した。動倍率(Kd/Ks)は1.4以内を目標値とした。
(1)NR:天然ゴム、「RSS#1」
(2)EPDM:JSR製の「EP96」、ENB含量 6.0質量%、エチレン含量 66質量%(ポリマー成分:30phr,オイル成分:15phr)
(3)FT級カーボンブラック:旭カーボン製「アサヒサーマル」
(4)老化防止剤:2,2,4−トリメチル−1,2−ジヒドロキノリン重合体、大内新興化学工業(株)製の「ノクラック224」
(5)過酸化物:ジ(2−t−ブチルパーオキシイソプロピル)ベンゼン、日油社製「ペロキシモンF−40」
(6)アクリル酸亜鉛(ZA):サートマー社製の「SR633」
(7)ビスシトラコンイミド類:1,3−ビス(シトラコンイミドメチル)ベンゼン「PERKALINK 900」(フレキシス社製)
これに対して、比較例1は、低動倍率は良好ではあったが、耐クリープ性(圧縮永久歪み)には劣っていた。比較例2は、共架橋剤としてシトラコンイミド化合物を単独で配合した例ではあるが、引張り物性の目標値をクリアーすることができなかった。
Claims (4)
- ゴム成分として天然ゴム(NR)とエチレン・プロピレン・ジエンゴム(EPDM)とを、質量比でNR/EPDM=70/30〜45/55の割合で含むと共に、加硫剤として過酸化物を含み、かつ共架橋剤として、(A)アクリル酸亜鉛又はメタクリル酸亜鉛、及び(B)シトラコンイミド化合物を含むことを特徴とする防振ゴム組成物。
- (B)シトラコンイミド化合物がビスシトラコンイミド類である請求項1記載の防振ゴム組成物。
- ゴム成分100質量部に対する(A)アクリル酸亜鉛又はメタクリル酸亜鉛の配合量をX質量部、(B)シトラコンイミド化合物の配合量をY質量部、共架橋剤の総質量部をX+Y=Z質量部としたとき、
0.5≦X≦4.0
0.5≦Y≦6.0
5.0≦Z≦7.0
を満たす請求項1又は2記載の防振ゴム組成物。 - 請求項1、2又は3記載のゴム組成物を硬化させてなる防振ゴム。
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