摘要
提高ＥＰＤＭ的混炼温度（大于１３０℃），加入少量活性剂，再加入甲基乙烯基硅橡胶（ＶＭＱ）的共混工艺，与常温共混工艺相比，增加了ＥＰＤＭ与ＶＭＱ的相容性。实验结果表明，该工艺使共混胶胶相结构细微均匀，减小了ＥＰＤＭ与ＶＭＱ硫化速度的差距，降低了共混硫化胶的ｔｇδ，提高了硫化胶的拉伸强度、定伸应力和体积电阻率，降低了永久变形和压缩永久变形。加入偶联剂，效果则更好。
The compatibility between ethylene propylene dienemonomer(EPDM)and vinyl methyl silicon rubber(VMQ)was improved by increasing the temperature(more than l30 ℃)of EPDM,adding a little amount of active agent and then incorporating VMQ.The results showed that the technique accelerated the curing speed of EPDM,decreased the loss tangent of the blend,the phase structure was fine and homogeneous.Tensile strenf the vulcanizate increased,permanentset and compression set decreased.The effect of this technique was obviously improved by adding silicon coupling agent.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1996年第3期171-173,共3页
China Synthetic Rubber Industry
关键词
乙丙橡胶
甲基乙烯基
硅橡胶
共混
EPDM
ethylene propylene dienemonomer
vinyl methyl silicon rubber
blend
compatibility
