摘要
研究了硫化剂、相容剂、白炭黑以及共混工艺和共混比对甲基乙烯基硅橡胶（ＭＶＱ）／ＥＰＤＭ共混物力学性能和微观形态的影响。结果表明，用过氧化二异丙苯或双２５作硫化剂，用量分别在２．０～２．５和１．５～２．０份时共混物性能较佳；相容剂用量在２０份以下时，共混物的拉伸强度等力学性能随相容剂Ａ用量增大而提高，分散相尺寸减小，分布均匀；高补强透明白炭黑的补强效果显著，且白炭黑应先分别混入１１０－８ＭＶＱ和ＥＰＤＭ；高温混炼优于低温混炼；
The influences of the curing system,compatibilizer,silica as well as the blending technique and blending ratio on the mechanical properties and micro morphology of MVQ/EPDM blend were investigated The results showed that a blend with better properties could be obtained when 2 0～2 5 phr of DCP or 1 5～2 0 phr of 2,5 dimethyl 2,5 di(tert butyl peroxy) hexane was used as curing agent;the physical properties,such as tensile strength,of the blend increased,the discontinuous phase decreased in size and dispersed more uniformly as the level of the compatibilizer increased up to 20 phr;the high effective transparent reinforcing silica was suitable for the blend to get good reinforcement when it was separately added to 110 8 MVQ and EPDM previously;it was better to mix the blend at the elevated temperature than at the low temperature;and the physical properties of the blend increased as the EPDM proportion increased
出处
《橡胶工业》
CAS
北大核心
1997年第5期263-267,共5页
China Rubber Industry
关键词
甲基乙烯基
硅橡胶
共混物
力学性
乙丙橡胶
MVQ,EPDM,blend,mechanical property,compatibilizer,micro morphology
