申请人:Hakuta Takashi
公开号:US20050154132A1
公开(公告)日:2005-07-14
The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor. The automobile weatherstrip, hose, rubber vibration insulator, belt, sealing material, expanded product, covered electric wire, electric wire joint, electric insulating part and household rubber product according to the invention comprise the above-mentioned rubber composition. The rubber composition has a high crosslinking rate and excellent productivity to produce crosslinked rubber molded products, is capable of undergoing hot-air crosslinking such as HAV or UHF and is capable of providing crosslinked rubber molded products having excellent compression set resistance, strength properties, heat resistance, weathering resistance and abrasion resistance.
本发明的可交联橡胶组合物可通过热空气进行交联,其中的热空气交联橡胶板在使用HB铅笔硬度测试时表面没有划痕,并且在经过150°C的热处理22小时后,其压缩回弹率不超过70%。该橡胶组合物包括一种乙烯/α-烯烃/非共轭聚烯随机共聚物橡胶,其中包含一种特定的含有乙烯基末端的诺博烯化合物,一种具有至少两个SiH基团的化合物,以及必要时包括铂族元素的加成反应催化剂和反应抑制剂。根据本发明的汽车密封条、软管、橡胶减震器、皮带、密封材料、膨胀制品、覆盖电线、电线接头、电绝缘件和家用橡胶制品包括上述橡胶组合物。该橡胶组合物具有高交联速率和优异的生产力,可生产交联橡胶成型产品,能够经受HAV或UHF等热空气交联,并能够提供具有优异的压缩回弹性、强度性能、耐热性、耐候性和耐磨性的交联橡胶成型产品。