摘要
以环己烷为溶剂、苯乙烯和丁二烯为单体、n-BuLi为引发剂、二乙二醇二甲醚（2 G）为结构调节剂,通过活性负离子溶液聚合合成了高苯乙烯橡胶,研究了引发剂种类、聚合温度、2 G/n-BuLi（摩尔比）、苯乙烯/丁二烯（质量比）、相对分子质量及其分布对共聚橡胶力学性能的影响。结果表明,当苯乙烯/丁二烯为60/40、2 G/n-BuLi为1.0时,在（65±2）℃下可聚合得到力学性能较好的高苯乙烯橡胶,其数均分子量为15×104~20×104、分子量分布为1.40左右。
High styrene rubber was synthesized by living anionic solution polymerization with cyclohexane as solvent,styrene（St） and butadiene（Bd） as monomers,n-BuLi as initiator,diethylene glycol dimethyl ether（2 G） as structure regulator.The effects of initiator spicies,polymerization temperature,2 G/n-BuLi（mole ratio）,St/Bd（mass ratio）,relative molecular mass and its distribution on mechanical properties of high styrene rubber were studied.The results showed that the high styrene rubber with number-average molecular mass of 15×104-20×104,and its distribution of 1.40 could be obtained at polymerization temperature（65±2） ℃,St/Bd（mass ratio） 60/40,2 G/n-BuLi（mole ratio） 1.0,and the high styrene rubber had better mechanical properties under this conditions.
出处
《合成橡胶工业》
CAS
CSCD
2010年第2期92-96,共5页
China Synthetic Rubber Industry
基金
中国石油兰州石化公司资助项目(LZSH200606)
关键词
苯乙烯
丁二烯
正丁基锂
结构调节剂
高苯乙烯橡胶
负离子溶液聚合
styrene
butadiene
n-butyl lithium
structure regulator
high styrene rubber
anionic solution polymerization
