硅烷化改性乳聚丁苯橡胶的制备及动态性能研究

摘要

The silane modified ESBR(Si-ESBR) was prepared by reaction processing method and using NaH as activating agent and Et3SiCl as modifier, and the dynamic properties of Si-ESBR were studied. The optimum reaction condition was as follows:ESBR 50 g,NaH 0. 04 mol,Et3SiCl 0. 04 mol,reaction time after adding NaH 15 min, reaction time after adding Et3SiCl 15 min, reaction temperature 80 ℃. With the modification, the Payne effect of Si-ESBR decreased significantly, the filler network improved effectively,and the dynamic energy loss decreased.%采用反应加工方法,以氢化钠(NaH)作活性剂、三乙基氯硅烷(Et3SiCl)作改性剂制备硅烷化改性乳聚丁苯橡胶(Si-ESBR),并对其动态性能进行研究.Si-ESBR最佳改性条件为:ESBR 50 g,NaH 0.04 mol,Et3SiCl 0.04mol,加入NaH后的反应时间 15 min,加入Et3SiCl后的反应时间 15 min,反应温度80℃.ESBR硅烷化改性后胶料的Payne效应明显降低,填料的网络化效应得到改善,动态能量损耗减小.