摘要
试验研究常规补强剂(炭黑、白炭黑)、蒙脱土(原土、有机蒙脱土)和不饱和羧酸盐(甲基丙烯酸锌、甲基丙烯酸镁)三类补强剂对氢化丁腈橡胶胶料物理性能和热空气老化性能的影响,并用扫描电镜、透射电镜和热重分析等方法对其微观结构进行表征。结果表明,常规补强剂分散均匀,胶料有较好的物理性能,但耐热空气老化性能差;不饱和羧酸盐在橡胶基体中发生交联接枝反应,补强效果最佳,胶料耐热空气老化性能明显提高;有机改性后的蒙脱土分散性和胶料的物理性能大幅度提高,耐热空气老化性能优异。
The effects of conventional reinforcing agents（carbon black and silica）,montmorillonite （original and OMMT） and salts of unsaturated carboxylic acids（zinc methacrylate and magnesium methacrylate） on the physical properties and hot air aging property of HNBR compounds were investigated,and the microstructure was characterized by SEM,TEM and TGA. The results showed that the conventional reinforcing agents could be dispersed uniformly in rubber matrix, and provided better physical properties but poor air aging property; the reinforcement effect of salts of unsaturated carboxylic acids was the best because of the crosslinking grafted reaction in rubber matrix, and the air aging property increased obviously; the dispersion of MMT and physical properties of HNBR compounds were significantly enhanced by organic modification on MMT, and meanwhile, the composites had excellent hot air aging property.
出处
《橡胶工业》
CAS
北大核心
2008年第2期69-74,共6页
China Rubber Industry
基金
国家自然科学基金资助项目(50573021)
