影响氯磺化聚乙烯/丁腈橡胶共混物耐热老化性能的因素  

Effective factors of heat aging resistance of chlorosulfonyl-polyethylene/acrylonitrile-butadiene rubber blends

作　　者：陈焜盛[1] 罗权焜[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《合成橡胶工业》2006年第5期360-363,共4页China Synthetic Rubber Industry

摘　　要：研究了氯磺化聚乙烯（CSM）和丁腈橡胶（NBR）的共混比、硫黄用量、炭黑、防老剂及软化剂诸因素对CSM／NBR共混物耐热老化性能的影响。结果表明，将CSM与NBR共混，可以改善NBR的耐热老化性能，当CSM／NBR共混比（质量比）为50／50时，耐热老化性能得到显著提高。适当减少硫黄用量，有利于保持较高的耐热老化性能，硫黄用量以0．25～0．75份为宜。炭黑用量对共混物的耐热老化性能有影响，随着炭黑N550用量的增加，老化后的力学性能保持率先增加后减小。防老刺NBC的耐热老化效果较好。软化剂选用邻苯二甲酸二丁酯或邻苯二甲酸二辛酯时，CSM／NBR共混物具有较好的耐热老化性能。The effect of ratio of chlorosulfonyl-polyethylene （CSM） and acrylonitrile-butadiene rubber （NBR） , sulfur, carbon black, antioxidant and softening agent on the heat aging resistance of CSM/NBR blends were investigated. The results showed that the heat aging resistance of NBR increased when CSM blends with it anti the mass ratio of CSM/NBR was 50/50. When the amount of sulfur was decreased, the heat aging resistance of the blends were better, the optimum amount was 0.25 - 0. 75 phr. The heat aging resistance increased first then decreased with the increase of amount of carbon black N 550. The heat aging resistance of CSM/NBR were better when the antioxidant NBC, the softening agent dibuty! phthalate or diocthl phthalate was used.

关 键 词：氯磺化聚乙烯 丁腈橡胶 共混物 耐热老化性能 

分 类 号：TQ330.14[化学工程—橡胶工业]