摘要
介绍丁基橡胶(IIR)以及卤化丁基橡胶(XIIR)热降解、老化和稳定化的研究进展。在不同温度下,IIR和XIIR的热降解产物不同。老化温度不同,老化机理不同。热、氧、臭氧和光加速IIR和XIIR的老化进程,其老化降解主要是分子主链断裂,尤其是丙烯基基团断裂。对IIR和XIIR进行结构改性、添加稳定剂、优化硫化体系、使用新型填料与三元乙丙橡胶并用可提高IIR和XIIR的稳定性。
The research progress of thermal degradation,aging and stabilization of butyl rubber(IIR) and halogenated butyl rubber(XIIR) was introduced. At different temperatures,the thermal degradation products and aging mechanism were different. The aging process could be accelerated by heat,oxygen,ozone and light. The main mechanism of aging process was the breakage of the main molecular chain,particularly,the cleavage of acryl group. The heat stability of IIR and XIIR could be improved by structure modification,addition of stabilizers,optimization of vulcanization system,use of novel fillers,and blending with EPDM rubber.
作者
张国杰
王清才
周志峰
张又文
赵天琪
ZHANG Guojie;WANG Qingcai;ZHOU Zhifeng;ZHANG Youwen;ZHAO Tianqi(Beijing Rubber Industry Research and Design Institute Co.,Ltd,Beijing 100143,China)
出处
《橡胶科技》
2019年第1期5-10,共6页
Rubber Science and Technology
关键词
丁基橡胶
卤化丁基橡胶
热降解
老化
稳定化
butyl rubber
halogenated butyl rubber
thermal degradation
aging
stabilization
