JP3329599B2 - Anti-vibration rubber composition - Google Patents
Anti-vibration rubber compositionInfo
- Publication number
- JP3329599B2 JP3329599B2 JP27954194A JP27954194A JP3329599B2 JP 3329599 B2 JP3329599 B2 JP 3329599B2 JP 27954194 A JP27954194 A JP 27954194A JP 27954194 A JP27954194 A JP 27954194A JP 3329599 B2 JP3329599 B2 JP 3329599B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- vibration
- polymer
- copolymer
- rubber composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Vibration Prevention Devices (AREA)
- Springs (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】各種の振動及び騒音の防止用ゴム
防振ゴム組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber composition for preventing various vibrations and noises.
【０００２】[0002]
【従来の技術】従来より、振動及び騒音の防止のために
防振ゴムが使用され、各所で防振効果が図られている。
ほとんどの防振ゴムにおいて要求される特性としては、
低周波で高歪み領域ではｔａｎδが大きく、高周波で低
歪み領域では動倍率（動的弾性率と静的弾性率の比）が
低いことが理想的である。従って、防振ゴムのゴム材料
としてもｔａｎδが大きく、動倍率が低いものが求めら
れるが、ｔａｎδが大きいことと低動倍率であることは
二律背反の関係にあり、どちらかの特性を優先させた、
またはバランスさせたゴム材料を防振ゴム用に使用する
のが現状である。このような理想的な特性を得るために
エチレングリコール等の液体を封入する等の構造上で工
夫をしている。2. Description of the Related Art Anti-vibration rubbers have been used to prevent vibration and noise, and various places have achieved an anti-vibration effect.
The characteristics required for most rubber is
Ideally, tan δ is large in a low-frequency and high-strain region, and low in a high-frequency and low-strain region in a dynamic magnification (ratio between dynamic elastic modulus and static elastic modulus). Therefore, as the rubber material of the vibration-proof rubber, a material having a large tan δ and a low dynamic magnification is required, but the fact that the tan δ is large and the low dynamic magnification have a trade-off relationship, and one of the characteristics is prioritized. ,
Or at present, a balanced rubber material is used for vibration-proof rubber. In order to obtain such ideal characteristics, a device such as sealing a liquid such as ethylene glycol is devised.
【０００３】液体を封入して、上記理想的な特性を持た
せた防振ゴムは、構造が複雑になるため製造するのに手
間がかかり、部品数も増えるため非常に高価になる。ま
た、液体封入防振ゴムでは、液体の共振を利用してｔａ
ｎδを出している為、液体の共振の出る方向のみしか高
いｔａｎδの特性が得られないという欠点がある。[0003] Anti-vibration rubber having the above-mentioned ideal characteristics by enclosing a liquid has a complicated structure, which requires a lot of trouble to manufacture, and is very expensive due to an increase in the number of parts. In addition, in the liquid-filled anti-vibration rubber, ta is utilized by utilizing the resonance of the liquid.
Since nδ is provided, there is a drawback that high tan δ characteristics can be obtained only in the direction in which liquid resonance occurs.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記問題点
を改良して、ｔａｎδが大きく、しかも動倍率が低い防
振ゴム用として理想方向の特性を持つゴム材料を提供す
ることにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a rubber material having an ideal characteristic for a vibration-proof rubber having a large tan .delta.
【０００５】[0005]
【課題を解決するするための手段】本発明者らは、前記
課題を解決する為に鋭意検討を行った結果、イソブチレ
ンとパラメチルスチレンとの共重合物でパラメチルスチ
レンの一部を臭素化した共重合体を使用することによ
り、上記目的の防振ゴム組成物を得ることに成功し、本
発明を完成するに至ったのである。即ち、本発明の防振
ゴム組成物はイソブチレンとパラメチルスチレンとの共
重合物で、パラメチルスチレンの一部を臭素化した共重
合体を使用することを特徴とするものである。尚、上記
パラメチルスチレンの一部を臭素化した共重合体とは、
通常臭素の重量％が、前記ポリマー全体を１００重量％
とした場合に対して０．８〜２重量％程度臭素化された
ものである。Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a copolymer of isobutylene and paramethylstyrene partially brominated paramethylstyrene. By using the copolymer thus obtained, the anti-vibration rubber composition of the above object was successfully obtained, and the present invention was completed. That is, the vibration damping rubber composition of the present invention is a copolymer of isobutylene and paramethylstyrene, wherein a copolymer obtained by partially brominating paramethylstyrene is used. In addition, the copolymer obtained by brominating a part of the above paramethylstyrene,
Usually, the weight% of bromine is 100% by weight of the whole polymer.
About 0.8 to 2% by weight of the case where brominated.
【０００６】本発明のポリマーは、単独もしくはジエン
系ゴムとのブレンドにて効果が見られる。ブレンドする
ゴムとして、天然ゴム、ＩＲ、ＳＢＲ、ＢＲ等全てのジ
エン系ゴムで可能である。ブレンド比としては、特に制
限はないが、１０重量部未満であると本ポリマーの特徴
（高ロス低動倍）が明確に発現しない。又、防振ゴムと
しては、疲労性が良好であることが望まれるが、ジエン
系のブレンドゴムとして天然ゴムもしくはイソプレンゴ
ムを適用することにより疲労性を維持できる。The effect of the polymer of the present invention can be seen either alone or in a blend with a diene rubber. As a rubber to be blended, all diene rubbers such as natural rubber, IR, SBR, and BR can be used. The blend ratio is not particularly limited, but if it is less than 10 parts by weight, the characteristics (high loss and low dynamic magnification) of the present polymer will not be clearly exhibited. It is desired that the anti-vibration rubber has good fatigue properties, but the fatigue properties can be maintained by applying natural rubber or isoprene rubber as a diene-based blend rubber.
【０００７】本発明においては、上記ポリマーの他に通
常防振ゴム用の配合剤として使用される。例えば補強
剤、軟化剤、老化防止剤、加硫剤、加硫促進剤、加硫助
剤、分散剤、加工助剤等を適宜配合することが出来る。In the present invention, in addition to the above-mentioned polymer, it is usually used as a compounding agent for a vibration-proof rubber. For example, a reinforcing agent, a softening agent, an antioxidant, a vulcanizing agent, a vulcanization accelerator, a vulcanizing aid, a dispersant, a processing aid and the like can be appropriately compounded.
【０００８】以下、実施例、比較例を示して、本発明を
更に詳細を説明するが、本発明はこれらの実施例に何ら
限定されるものではない。Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.
【０００９】[0009]
【表１】 [Table 1]
【表２】 [Table 2]
【表３】 [Table 3]
【表４】 （注）ポリマー：「ＸＰ−５０・グレード８９−１」（エクソン化学社製）[Table 4] (Note) Polymer: “XP-50 grade 89-1” (manufactured by Exxon Chemical Co., Ltd.)
【００１０】表１、３の配合組成（配合単位：重量部）
に従い、防振ゴム組成物を調整した。この防振ゴム組成
物を加硫後におけるゴムの硬度、強伸度、静的弾性率、
損失係数、動倍率、疲労性を測定した結果を表２、４に
示す。Compositions shown in Tables 1 and 3 (composition unit: parts by weight)
To prepare a vibration-proof rubber composition. The hardness, strong elongation, static elastic modulus of rubber after vulcanizing this vibration-proof rubber composition,
Tables 2 and 4 show the results of measuring the loss coefficient, the dynamic magnification, and the fatigue property.
【００１１】上記硬度、強伸度、静的弾性率、損失係
数、動倍率、疲労性は下記の方法により測定した。 （１）硬度、強伸度 ＪＩＳ Ｋ６３０１により準拠して測定した。 （２）静的弾性率、損失係数、動倍率。 厚さ２ｍｍ、幅５ｍｍの試料を用いて測定する。静的弾
性率は１５％伸ばした時の応力から算出した。動倍率は
１５％伸ばした状態で周波数１５Ｈｚ、振幅２％及び周
波数１００Ｈｚ、振幅０．２％、それぞれの正弦的振幅
を加えた時の応力から算出した動的弾性率と静的弾性率
の比より求めた。損失係数は１５％伸ばした状態で周波
数１５Ｈｚ、振幅２％、及び周波数１００Ｈｚ、振幅
０．２％それぞれの正弦的振幅を加えた時の応力とおく
れ角から算出した。 （３）疲労性は、試験サンプルは、図２に示される防振
ゴム金具１（材質：ＳＰＣＣ−ＳＤ）に接着処理（ブラ
スト処理後、接着剤として下塗りケムロック２０５、上
塗りケムロック２２０、いずれもロード社製を塗布）を
行い、各ゴム組成物を用いて標準形状防振ゴムＡ（長さ
４０ｍｍ、直径３６ｍｍ）を加硫作成した。そのサンプ
ルを、図３のように２５℃雰囲気下で剪断方向に０±５
０％（３Ｈｚ）の定歪み繰り返し振幅を与え、１ｃｍの
クラック発生までの回数を評価した。The above hardness, high elongation, static elastic modulus, loss coefficient, dynamic magnification and fatigue were measured by the following methods. (1) Hardness and strong elongation Measured according to JIS K6301. (2) Static elastic modulus, loss coefficient, dynamic magnification. The measurement is performed using a sample having a thickness of 2 mm and a width of 5 mm. The static elastic modulus was calculated from the stress at the time of elongation by 15%. The dynamic magnification is the ratio of the dynamic elastic modulus to the static elastic modulus calculated from the stress when a sine amplitude is applied at a frequency of 15 Hz, an amplitude of 2%, and a frequency of 100 Hz, an amplitude of 0.2% in a state of being extended by 15%. I asked more. The loss coefficient was calculated from the stress and the declination angle when a sinusoidal amplitude of 15 Hz and an amplitude of 2% and a frequency of 100 Hz and an amplitude of 0.2% were applied in a state where the loss factor was extended by 15%. (3) For fatigue properties, the test sample was bonded to the anti-vibration rubber fitting 1 (material: SPCC-SD) shown in FIG. 2 (after blasting, both the undercoat Chemlock 205 and the topcoat Chemlock 220 were loaded as adhesives) Co., Ltd.) and vulcanized to form a standard-shaped anti-vibration rubber A (length 40 mm, diameter 36 mm) using each rubber composition. As shown in FIG. 3, the sample was placed in a 25 ° C. atmosphere in a shear direction of 0 ± 5.
A constant strain repetition amplitude of 0% (3 Hz) was given, and the number of times until a 1 cm crack occurred was evaluated.
【００１２】［実施例］実施例１〜５は、天然ゴムと前
記共重合体のブレンド比を変えたものである。比較例１
はポリマーを天然ゴム１００にした配合ゴムである。比
較例２〜６は、表１の配合の通り防振ゴム用として使用
される一般的な配合である。それぞれのゴムの特性は表
２に示す。また、それぞれのゴム材料の動倍率とｔａｎ
δとの関係を図１に示す。[Examples] In Examples 1 to 5, the blend ratio of the natural rubber and the copolymer was changed. Comparative Example 1
Is a compound rubber in which the polymer is natural rubber 100. Comparative Examples 2 to 6 are general formulations used for vibration-proof rubber as shown in Table 1. Table 2 shows the properties of each rubber. In addition, the dynamic magnification of each rubber material and tan
FIG. 1 shows the relationship with δ.
【００１３】防振ゴム材料としては、ｔａｎδが大き
く、動倍率が低いもの、即ち図１での右下の方向ものが
理想的である。前記共重合体をブレンドすることによ
り、ｔａｎδが大きく、動倍率が低い理想的な特性を示
している。この特徴は、前記共重合体のブレンド比を多
くすればする程顕著であり、前記共重合体のみの配合が
最もｔａｎδが大きく、動倍率が低くなっている。ま
た、比較例７、８は、ジエン系のブレンドゴムとしてＳ
ＢＲ、ＢＲをブレンドしたものである。動特性はｔａｎ
δが大きく動倍率が低い理想的なものになっているが、
疲労性はＮＲをブレンドした系（実施例３）に比べて劣
っている。従って、疲労性が厳しいところで使用する防
振ゴムへの適用はＮＲブレンドが適している。As a vibration-proof rubber material, a material having a large tan δ and a low dynamic magnification, that is, a material in the lower right direction in FIG. 1 is ideal. By blending the above-mentioned copolymer, tan δ is large, and an ideal characteristic with a low dynamic magnification is shown. This characteristic is more remarkable as the blend ratio of the copolymer is increased, and the blend of the copolymer alone has the largest tan δ and the lower dynamic magnification. Further, Comparative Examples 7 and 8 were obtained by using S as a diene-based blend rubber.
BR, BR blended. Dynamic characteristics are tan
Although δ is large and the dynamic magnification is low, it is ideal,
Fatigue is inferior to the NR blended system (Example 3). Therefore, NR blends are suitable for application to vibration-proof rubber used in places where fatigue is severe.
【００１４】[0014]
【発明の効果】以上により、防振ゴムとしてイソブチレ
ンとパラメチルスチレンとの共重合体でパラメチルスチ
レンの一部を臭素化した共重合体を用いることによりｔ
ａｎδが大きく動倍率の低い防振ゴム組成物が提供され
る。As described above, the use of a copolymer of isobutylene and p-methylstyrene in which a portion of p-methylstyrene is brominated as a vibration-isolating rubber allows t to be improved.
An anti-vibration rubber composition having a large an δ and a low dynamic magnification is provided.
【図１】通常及び本発明に係る各種防振ゴム用組成物の
動倍率／ｔａｎδ（実施例、比較例）を示す関係図。FIG. 1 is a relationship diagram showing dynamic magnification / tan δ (Examples and Comparative Examples) of various compositions for vibration damping rubbers according to the present invention.
【図２】各防振ゴム用組成物の疲労性測定試験サンプル
を示す防振ゴムの概略断面図である。FIG. 2 is a schematic cross-sectional view of a vibration-isolating rubber showing a test sample for measuring fatigue properties of each composition for a vibration-isolating rubber.
【図３】疲労試験方法を示す該略図である。FIG. 3 is a schematic view showing a fatigue test method.
１ 防振ゴム金具 ２ 防振用ゴム 1 Anti-vibration rubber bracket 2 Anti-vibration rubber
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ１６Ｆ 15/08 Ｆ１６Ｆ 15/08 Ｂ (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 23/22 C08L 7/00 C08L 9/00 C08L 23/28 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 identification code FI F16F 15/08 F16F 15/08 B (58) Investigated field (Int.Cl. 7 , DB name) C08L 23/22 C08L 7 / 00 C08L 9/00 C08L 23/28
Claims (4)
共重合物でパラメチルスチレンの一部を臭素化した共重
合体（ポリマー）を使用することを特徴とする防振ゴム
組成物。An anti-vibration rubber composition comprising a copolymer of isobutylene and paramethylstyrene, wherein a copolymer (polymer) obtained by partially brominating paramethylstyrene is used.
してなることを特徴とする請求項１記載の防振ゴム組成
物。2. The vibration-insulating rubber composition according to claim 1, wherein said polymer and a diene rubber are blended.
比が上記ポリマ−／ジエン系ゴム＝１０／９０〜１００
／０であることを特徴とする請求項１又は２項に記載の
防振ゴム組成物。3. The blend ratio of the polymer and the diene rubber is such that the polymer / diene rubber = 10/90 to 100.
3. The vibration-damping rubber composition according to claim 1, wherein
Ｒ）もしくはイソプレンゴム（ＩＲ）をブレンドしてな
ることを特徴とする請求項２乃至３記載の防振ゴム用組
成物。4. The natural rubber (N) is used as the diene rubber.
4. The composition for rubber vibration isolators according to claim 2, wherein R) or isoprene rubber (IR) is blended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27954194A JP3329599B2 (en) | 1994-11-14 | 1994-11-14 | Anti-vibration rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27954194A JP3329599B2 (en) | 1994-11-14 | 1994-11-14 | Anti-vibration rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08134269A JPH08134269A (en) | 1996-05-28 |
| JP3329599B2 true JP3329599B2 (en) | 2002-09-30 |
Family
ID=17612436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27954194A Expired - Lifetime JP3329599B2 (en) | 1994-11-14 | 1994-11-14 | Anti-vibration rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3329599B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI221851B (en) | 2000-04-05 | 2004-10-11 | Kaneka Corp | Vibration damper composition |
| EP2587107B1 (en) | 2010-08-25 | 2018-07-11 | Daikin Industries, Ltd. | Hose |
| CN103080616B (en) | 2010-08-25 | 2016-04-27 | 大金工业株式会社 | Sealing material |
| US9045614B2 (en) | 2010-08-25 | 2015-06-02 | Daikin Industries, Ltd. | Fluororubber composition |
| JP5720689B2 (en) | 2010-08-25 | 2015-05-20 | ダイキン工業株式会社 | Fluoro rubber composition |
| CN103080216B (en) | 2010-08-25 | 2016-01-20 | 大金工业株式会社 | Band |
| US8754161B2 (en) | 2010-08-25 | 2014-06-17 | Daikin Industries, Ltd. | Complex-shaped fluororubber formed product |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791423B2 (en) * | 1990-03-30 | 1995-10-04 | 信越化学工業株式会社 | Anti-vibration rubber |
| US5063268A (en) * | 1990-06-08 | 1991-11-05 | Exxon Chemical Patents Inc. | Composition for tire treads (E-235) |
| DE69124695T2 (en) * | 1990-07-18 | 1997-05-28 | Exxon Chemical Co | INTERIOR COMPOSITION OF A TIRE |
| JPH061882A (en) * | 1992-06-17 | 1994-01-11 | Yokohama Rubber Co Ltd:The | Rubber composition for sidewall |
| JPH06207051A (en) * | 1993-01-12 | 1994-07-26 | Bridgestone Corp | Vibrationproof rubber composition |
-
1994
- 1994-11-14 JP JP27954194A patent/JP3329599B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08134269A (en) | 1996-05-28 |
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