复合调节体系对合成溶聚丁苯橡胶的反应动力学及微观结构的影响  

Effect of complex modifiers on polymerization kinetics and microstructure in synthesis of solution-polymerized styrene-butadiene rubber

作　　者：王雪[1,2] 刘慧玲[2] 徐炜[1,2] 吴丝竹[1] 张立群[1] 李传清[2] 王足远[2] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中国石化北京化工研究院燕山分院,北京102500

出　　处：《合成橡胶工业》2010年第6期424-428,共5页China Synthetic Rubber Industry

基　　金：中国石油化工股份有限公司资助项目(407060)

摘　　要：以正丁基锂为引发剂、环己烷/己烷为溶剂,采用间歇聚合工艺对丁二烯与苯乙烯进行共聚反应,合成了溶聚丁苯橡胶(SSBR),考察了不同调节体系[四氢呋喃(THF)、THF/三乙胺、THF/叔丁氧基钾、THF/叔戊氧基钾]和引发温度对反应动力学和SSBR微观结构的影响。结果表明,在单一调节体系或二元调节体系下合成的SSBR中始终存在一定量的苯乙烯微嵌段,无法制备全无规型SSBR。Solution-polymerized styrene-butadiene rubber（SSBR） was synthesized by batch copolymerization with n-BuLi as initiator,cyclohexane/hexane as solvent,and effect of different polar regulator system[tetrahydrofuran（THF）,THF/Et3N,THF/t-BuOK or THF/t-AmOK],and initiation temperature on polymerization kinetics and the microstructure of SSBR were investigated.The results showed that there were always some styrene micro-block in copolymer chains with single or binary regulator system,and the perfect random SSBR could not be prepared by the batch polymerization.

关 键 词：溶聚丁苯橡胶 间歇聚合 复合调节体系 反应动力学 微观结构 

分 类 号：TQ333.1[化学工程—橡胶工业]