BuLi/TMEDA体系合成SIBR  

Synthesis of SIBR in the presence of BuLi/TMEDA

作　　者：王启飞[1] 王妮妮[1] 史工昌[1] 廖明义[2] 商宜美[3] 于国柱[3] 梁爱民[3] 

机构地区：[1]大连理工大学化工学院高分子材料系,辽宁大连116012 [2]大连海事大学机电与材料学院,辽宁大连116026 [3]中国石化股份有限公司北京燕山分公司研究院,北京102500

出　　处：《弹性体》2005年第5期11-14,共4页China Elastomerics

基　　金：中国石油化工股份有限公司科研项目

摘　　要：以正丁基锂(BuLi)为引发剂,四甲基乙二胺(TMEDA)为结构调节剂,四氯化锡为偶联剂合成出了星型锡偶联SIBR。采用IR、GPC、DSC、DMA等仪器对合成的SIBR的微观结构、分子量大小及分布、玻璃化转变温度和动态力学性能进行了分析测试。研究结果表明,合成的SIBR随着TMEDA/Li的增大,tans1,4-Bd和1,4-Ip结构含量明显减少,3,4-Ip和总1,2结构含量明显增多;SIBR样品0℃的tanδ值增加非常明显,60℃的tanδ值均低于0.12。物理机械性能测试表明,合成的样品符合胎面胶的要求,且动态力学性能能够满足高性能胎面胶的需求。The star-shaped styrene-butadiene-isoprene（SIBR）was synthesized with n-BuLi as initiator, coclohexane as solvent, TMEDA（N, N, N＇, N＇-tetramethylethylene diamine）as polar modifier and SnCl4 as coupling agent. The microstructure, molecular weight, molecular weight distribution, glass transition temperature and dynamic properties of synthesized SIBR were characterized by IR, GPC, DSC, DMA. The results showed that with the increase of TMEDA, the content of tans1,4-Bd and 1,4-Ip decreased clearly, the content of 3,4-Ip and the total content of 1,2 increased dramatically, and tanδ（0℃ ）value increased obviously and all tanδ（60℃; ）value were lower than 0.12. The mechanical properties of SIBR fit to the requests of tire tread,and dynamic properties of SIBR prospect potential application of high performance tires.

关 键 词：SIBR TMEDA 微观结构 物理机械性能 动态力学性能 

分 类 号：TQ333.9[化学工程—橡胶工业]