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    • 4. 发明授权
    • Rubber composition, vibration-isolating rubber and vibration-isolating mount
    • 橡胶组合物,防震橡胶和隔振安装座
    • US06812288B2
    • 2004-11-02
    • US10329536
    • 2002-12-27
    • Naokazu KobayashiToshihiro TadakiKeisuke Tsukimawashi
    • Naokazu KobayashiToshihiro TadakiKeisuke Tsukimawashi
    • C08L900
    • C08L9/00C08L7/00C08L9/06C08L19/006C08L21/00C08L2666/08
    • The present invention provides a rubber composition that provides excellent vibration-isolating properties, a vibration isolating rubber formed from the rubber composition and a vibration-isolating mount. The rubber composition contains 5 to 40 parts by weight of a styrene-butadiene-based copolymer rubber, having a weight-average molecular weight of 200,000 or less and a glass transition temperature of −35° C. or higher; and 95 to 60 parts by weight of a diolefin-based rubber, having a weight-average molecular weight exceeding 200,000 and a glass transition temperature of −20° C. or lower; where the weight are based on 100 parts by weight of the total amount of both. A vibration-isolating rubber comprising this composition has a performance relationship between a dynamic-to-static modulus ration (Kd/Ks), which is a ratio of a dynamic spring constant (Kd) to a static spring constant (Ks), and a loss factor (tan &dgr;), as shown by the equation (1): Kd/Ks≦20 tan &dgr;−1.8 (1). This vibration-isolating rubber is used for a vibration-isolating mount.
    • 本发明提供了一种提供优异的隔振性能的橡胶组合物,由橡胶组合物形成的防振橡胶和防振安装件。 橡胶组合物含有5〜40重量份的苯乙烯 - 丁二烯类共聚物橡胶,其重均分子量为200,000以下,玻璃化转变温度为-35℃以上。 和95〜60重量份的二烯烃类橡胶,其重均分子量超过200,000,玻璃化转变温度为-20℃以下; 其中重量基于两者的总量的100重量份。 包含该组合物的隔振橡胶具有动态 - 静态模量比(Kd / Ks)与动态弹簧常数(Kd)与静态弹簧常数(Ks)之比的性能关系,以及 损耗因子(tanδ),如等式(1)所示:Kd / Ks <= 20tanδ-1.8(1)。 该隔振橡胶用于防振安装。