EPDM胶料的性能研究Ⅰ.炭黑补强EPDM胶料

Study on Properties of EPDM Compound Ⅰ Black reinforced EPDM Compound

研究了炭黑品种、用量和硅烷偶联剂Ｓｉ６９的使用等因素对炭黑补强ＥＰＤＭ胶料静态和动态性能的影响，并通过扫描电子显微镜分析了硫化胶的阿克隆磨耗表面，而且使用经改造的固特里奇压缩疲劳实验机测试了胶料内部的动态生热。研究结果表明：炭黑补强ＥＰＤＭ胶料生热较低，耐热老化性能较好，老化后动态性能有明显的改善；使用硅烷偶联剂Ｓｉ６９处理的炭黑，可显著降低胶料的动态生热；与ＳＢＲ载重轮胎胎面胶相比，ＥＰＤＭ胶料具有回弹性好、动态生热较小及老化后性能保持率较高的优点。

The influence of the carbon black kind and level as well as the usage of silane coupling agent Si69 on the static and dynamic properties of black reinforced EPDM was studied.The abrasion surface from Akron test was analysed with SEM and the dynamic heat build up in EPDM compound was measured with improved Goodrich compression fatigue tester.The results showed that the black reinforced EPDM compound possessed lower heat build up,higher heat resistance and significantly improved dynamic properties after ageing;the dynamic heat build up decreased significantly by using the carbon black treated with the silane coupling agent Si69;the EPDM compound had better resilience,lower dynamic heat build up and higher property retention after ageing when compared with the SBR truck tread compound,thus it was suitable to the rubber goods that worked dynamically at high temperature.