烯丙基三甲氧基硅烷封端溶聚丁苯橡胶的合成  

Synthesis of allyltrimethoxysilane end-capped solution polymerized styrene-butadiene rubber

作　　者：杨潇寒 王文恒 廖明义 王雪[2] YANG Xiao-han;WANG Wen-heng;LIAO Ming-yi;WANG Xue(College of Transportation Engineering,Dalian Maritime University,Dalian 116026,China;Yanshan Branch of Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 102500,China)

机构地区：[1]大连海事大学交通运输工程学院,辽宁大连116026 [2]中国石化北京北化院燕山分院,北京102500

出　　处：《合成橡胶工业》2022年第1期13-16,共4页China Synthetic Rubber Industry

摘　　要：以丁二烯和苯乙烯为单体、正丁基锂为引发剂、双四氢糠丙烷为结构调节剂、1,1-二苯基乙烯为"盖帽剂"、烯丙基三甲氧基硅烷(TIOS)为封端剂,采用负离子聚合法合成了TIOS封端的溶聚丁苯橡胶(SSBR)。采用凝胶渗透色谱和核磁共振波谱表征了封端前后SSBR的结构和分子量及其分布,考察了封端反应时间、反应温度、TIOS用量及SSBR分子量对封端效率的影响。结果表明,封端反应时间为30 min、反应温度为60℃、TIOS与正丁基锂摩尔比为2.0及SSBR相对分子质量约为60000时封端效率较高。Allyltrimethoxysilane(TIOS)terminating solution polymerized styrene-butadiene rubber(SSBR)was synthesized by using butadiene and styrene as monomers,n-butyllithium(n-BuLi)as initiator,2,2-di(2-tetrahydrofuryl)propane as structure regulator,1,1-diphenylethylene as a capping agent and TIOS as end-capping agent via anionic polymerization.The structure,molecular weight and its distribution of SSBR-TIOS before and after terminating were characterized by proton nuclear magnetic resonance spectroscopy and gel permeation chromatography,respectively.The effects of reaction time and temperature,TIOS amount and SSBR molecular weight on the terminating efficiency were investigated.The results showed that the terminating efficiency reached the highest value when the functionalized time was 30 min,reaction temperature was 60℃,molar ratio of TIOS to n-BuLi was 2.0 and molecular weight of SSBR was about 60000.

关 键 词：溶聚丁苯橡胶 烯丙基三甲氧基硅烷 负离子聚合 封端效率 微观结构 

分 类 号：TQ333.1[化学工程—橡胶工业]