JPWO2016159257A1 - 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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- JPWO2016159257A1 JPWO2016159257A1 JP2017510202A JP2017510202A JPWO2016159257A1 JP WO2016159257 A1 JPWO2016159257 A1 JP WO2016159257A1 JP 2017510202 A JP2017510202 A JP 2017510202A JP 2017510202 A JP2017510202 A JP 2017510202A JP WO2016159257 A1 JPWO2016159257 A1 JP WO2016159257A1
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- 235000021313 oleic acid Nutrition 0.000 description 1
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- 239000005022 packaging material Substances 0.000 description 1
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- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
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- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 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
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
[1]天然ゴム、または天然ゴムとジエン系合成ゴムとの混合物を主成分として含むゴム成分と、ビスマレイミドと、ベンゼン環を有するジチオカルバミン酸金属塩とを含有することを特徴とする防振ゴム組成物。
[2]ゴム成分の全てが天然ゴムからなる[1]記載の防振ゴム組成物。
[3]天然ゴムとジエン系合成ゴムとの混合物を主成分とし、天然ゴム(A)とジエン系ゴム混合物(B)との配合比率(A)/(B)が90/10〜40/60である[1]記載の防振ゴム組成物。
[4]上記のベンゼン環を有するジチオカルバミン酸金属塩が、ジベンジルジチオカルバミン酸亜鉛塩またはN−エチル−N−フェニルジチオカルバミン酸亜鉛塩である[1]、[2]又は[3]記載の防振ゴム組成物。
[5]上記ビスマレイミドの配合量が、ゴム成分100質量部に対して、0.2〜10質量部である[1]〜[4]のいずれか1項記載の防振ゴム組成物。
[6]上記ジチオカルバミン酸金属塩の配合量が、ゴム成分100質量部に対して、0.2〜5質量部である[1]〜[5]のいずれか1項記載の防振ゴム組成物。
[7]上記ゴム組成物中に硫黄を含有する[1]〜[6]のいずれか1項記載の防振ゴム組成物。
[8]上記[1]〜[7]のいずれか1項記載のゴム組成物を硬化させてなる防振ゴム。
本発明の防振ゴム組成物は、ゴム成分としては、天然ゴム(NR)、または天然ゴムとジエン系ゴムとを混合したものを主成分とするものである。
下記表1に示す配合組成で混練し、実施例1〜7及び比較例I〜VIの各々の防振ゴム組成物を所定の条件で所定の形状に加硫硬化させ、成型物を作製した。この成形物を本発明の防振ゴムの評価体とした。得られた成形物について、硬度(Hd)、引張伸び(Eb)、引張強さ(Tb)、引張応力(Md100)、耐熱性(熱老化試験)、圧縮永久歪み(CS)、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。また、熱老化後の静バネ定数(Ks)及び静バネ変化率については下記の試験内容により、測定を行い、評価した。その結果を表1に併記する。
JIS K 6253(タイプA)に準拠
[引張伸び(Eb)]
JIS K 6251に準拠した。
[引張強さ(Tb)]
JIS K 6251に準拠した。
[引張応力(Md100)]
JIS K 6251に準拠して、伸びが100%のときの応力(Md100)を求めた。
[耐熱性(熱老化試験)]
JIS K 6257に準拠し、100℃,96時間の熱老化条件下で行い、それぞれ試験片を放置した後、上記引張伸び(Eb)、引張強さ(Tb)、及び引張応力(Md100)をそれぞれ測定し、また、これらの変化率を求めた。変化率の定義は、熱老化前の試験片の各物性値に対する熱老化後の試験片の各物性値の比であって、例えば引張伸び(Eb)の保持率では(熱老化後のEb/熱老化前のEb)となる。保持率は1に近い程、熱老化による変化がないことを意味し、従って、耐熱性に優れていることを示す。
[圧縮永久歪み]
100℃,72時間の加熱温度条件の下、圧縮永久歪み試験をJIS K 6262に準拠して実施した。
[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。また、静バネ定数(Ks)及び動倍率(Kd/Ks)の評価では、直径30mm×高さ30mmの円柱状の試料を作製した。
[熱老化後の静バネ定数(Ks)、及び静バネ変化率]
100℃,250時間の加熱温度条件の下で行い、それぞれ試験片を放置した後、静バネ定数(Ks)を測定した。静バネ定数(Ks)の変化率の定義は、熱老化前の試験片の各物性値に対する熱老化後の試験片の各物性値の比、即ち、熱老化後のKs/熱老化前のKsとなる。変化率は1に近い程、熱老化による変化がないことを意味し、耐熱性に優れていることを示す。
・天然ゴム(NR):「RSS#4」
・ブタジエンゴム:JSR社製「BR01」
・旭カーボン社製「旭 #65」
新日本理化社製「ステアリン酸50S」
亜鉛華
ハクスイテック社製「3号亜鉛華」
ワックス(WAX)
精工化学社製「サンタイト S」
老化防止剤:6C
大内新興化学工業社製 N−フェニル−N’−(1,3−ジメチルブチル)−p−フェニレンジアミン、「ノクラック NS−6」
ナフテンオイル
SUN REFINING AND MARKETING COMPANY 「Sunthene4240」
硫黄
鶴見化学社製「粉末硫黄」
大内新興化学工業社製 N,N’−m−フェニレンビスマレイミド、「バルノックPM」)
川口化学工業社製「アクセル TMT−PO」
加硫促進剤 CZ
大内新興化学工業社製「ノクセラー CZ−G」
大内新興化学工業社製「ノクセラ― PZ」
ジチオカルバミン酸金属塩 BZ
大内新興化学工業社製「ノクセラ― BZ」
ジチオカルバミン酸金属塩 PX
大内新興化学工業社製「ノクセラ― PX」
ジチオカルバミン酸金属塩 ZTC
大内新興化学工業社製「ノクセラ― ZTC」
ジチオカルバミン酸金属塩 ZP
大内新興化学工業社製「ノクセラ― ZP」
実施例1〜7は、各比較例に比べて、熱老化後の静バネ変化率が小さく、耐熱性が良好であり、且つ、圧縮永久歪みが低くなると共に、動倍率が低く防振性能を良好に得ることができる。
これに対して、比較例Iは、圧縮永久歪みが大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。
比較例IIは、圧縮永久歪みが大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。
比較例IIIは、圧縮永久歪みが大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。また、比較例III−2は、熱老化後の引張伸び(Eb)が小さくなり、耐熱性に劣る。
比較例IVは、圧縮永久歪みが大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。また、比較例IVは、熱老化後の引張伸び(Eb)が小さくなり、耐熱性に劣る。
比較例Vは、圧縮永久歪みが非常に大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。
比較例VIは、圧縮永久歪みが大きくなり、動倍率が大きくなると共に、熱老化後の静バネ変化率が大きく、耐熱性の悪化が見られる。
Claims (8)
- 天然ゴム、または天然ゴムとジエン系合成ゴムとの混合物を主成分として含むゴム成分と、ビスマレイミドと、ベンゼン環を有するジチオカルバミン酸金属塩とを含有することを特徴とする防振ゴム組成物。
- ゴム成分の全てが天然ゴムからなる請求項1記載の防振ゴム組成物。
- 天然ゴムとジエン系合成ゴムとの混合物を主成分とし、天然ゴム(A)とジエン系ゴム混合物(B)との配合比率(A)/(B)が90/10〜40/60である請求項1記載の防振ゴム組成物。
- 上記のベンゼン環を有するジチオカルバミン酸金属塩が、ジベンジルジチオカルバミン酸亜鉛塩またはN−エチル−N−フェニルジチオカルバミン酸亜鉛塩である請求項1、2又は3記載の防振ゴム組成物。
- 上記ビスマレイミドの配合量が、ゴム成分100質量部に対して、0.2〜10質量部である請求項1〜4のいずれか1項記載の防振ゴム組成物。
- 上記ジチオカルバミン酸金属塩の配合量が、ゴム成分100質量部に対して、0.2〜5質量部である請求項1〜5のいずれか1項記載の防振ゴム組成物。
- 上記ゴム組成物中に硫黄を含有する請求項1〜6のいずれか1項記載の防振ゴム組成物。
- 請求項1〜7のいずれか1項記載のゴム組成物を硬化させてなる防振ゴム。
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PCT/JP2016/060715 WO2016159257A1 (ja) | 2015-04-01 | 2016-03-31 | 防振ゴム組成物及び防振ゴム |
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EP (1) | EP3279250B1 (ja) |
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JP7133119B1 (ja) * | 2021-10-29 | 2022-09-07 | 住友理工株式会社 | ゴムの混練方法 |
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US3904592A (en) * | 1972-11-13 | 1975-09-09 | Frederick H Sexsmith | Urethane-maleimide system for cross-linking unsaturated elastomers |
US5151142A (en) * | 1986-01-13 | 1992-09-29 | Bridgestone Corporation | Heavy duty pneumatic radial tires using rubber reinforcing fiber cords with improved adhesion |
JPH01278543A (ja) * | 1988-04-30 | 1989-11-08 | Sanshin Chem Ind Co Ltd | ゴム組成物 |
US5191028A (en) * | 1989-01-12 | 1993-03-02 | Tokai Rubber Industries, Ltd. | Rubber composition comprising diene rubber material and vulcanization accelerators |
JP2897836B2 (ja) * | 1990-03-08 | 1999-05-31 | 株式会社ブリヂストン | 防振ゴム用ゴム組成物 |
FR2723374A1 (fr) * | 1994-08-03 | 1996-02-09 | Michelin & Cie | Composition de caoutchouc depourvue de precusseur de nitrosamine cancerigene et servant de gomme de liaison |
ES2269099T3 (es) * | 1999-02-05 | 2007-04-01 | Bridgestone Corporation | Mezcla de caucho y cubierta neumatica. |
JP2001049033A (ja) * | 1999-08-10 | 2001-02-20 | Bridgestone Corp | ゴム組成物及び空気入りタイヤ |
JP4622619B2 (ja) * | 2005-03-28 | 2011-02-02 | 東海ゴム工業株式会社 | 防振ゴム組成物 |
US7566748B2 (en) * | 2005-12-19 | 2009-07-28 | The Goodyear Tire & Rubber Company | Pneumatic tire having a rubber component containing N, N′-(m-phenylene) bismaleimide and zinc dibenzyl dithiocarbamate |
BR112013027611A2 (pt) * | 2011-04-28 | 2017-02-14 | Bridgestone Corp | método para fabricar uma composição de borracha |
FR2974809B1 (fr) * | 2011-05-06 | 2013-05-03 | Michelin Soc Tech | Pneumatique dont la bande de roulement comporte un sbr emulsion a haut taux de trans. |
KR101977349B1 (ko) * | 2017-11-16 | 2019-05-10 | 금호타이어 주식회사 | 비공기입 타이어 제작방법 |
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