低相对分子质量端羟基丁苯橡胶的合成、表征及应用  

Synthesis,characterization and application of hydroxyl-terminated poly(butadiene-styrene) rubber with low relative molecular mass

作　　者：齐永新[1,2] 柏海见[1,2] 易建军[2] 郝爱[2] 陈继明[2] 赵小龙[3] 刘栓祥[3] 王福善[3] 李彦峰[1] 

机构地区：[1]兰州大学化学化工学院,兰州730000 [2]中国石油兰州石化公司研究院,兰州730060 [3]中国石油兰州石化公司,兰州730060

出　　处：《合成橡胶工业》2012年第6期413-416,共4页China Synthetic Rubber Industry

基　　金：中国石油科技资助项目(2000503-1)

摘　　要：采用自由基溶液聚合法合成了低相对分子质量端羟基聚丁二烯-苯乙烯橡胶(HTBS),通过傅里叶变换红外光谱表征了HTBS的微观结构,并研究了用其制得聚合物材料的力学性能。结果表明,采用部分连续加入引发剂方式制备的HTBS分子量分布较窄;当HTBS的结合苯乙烯质量分数为16%～26%时,顺式-1,4-结构和反式-1,4-结构质量分数为53%～61%,1,2-结构质量分数为20%～24%;由HTBS制得的聚氨酯弹性体和聚氨酯防水涂料具有较好的力学性能,另外HTBS可有效提高聚苯乙烯树脂的扯断伸长率。The hydroxyl-terminated poly（butadiene-styrene） rubber（HTBS） with low relative molecular mass was prepared by radical solution polymerization,the microstructure of HTBS was characterized by Fourier transform infrared spectroscopy,and the mechanical properties of polymer materials prepared with HTBS was studied.The results showed that the molecular weight distribution of HTBS was narrow by partly continuous adding mode of initiator.Mass fration of cis-1,4-unit and trans-1,4-unit in HTBS was 53%-61%,and 1,2-units 20%-24% when mass fraction of bound styrene in HTBS was 16%-26%.The polyurethane elastomer and polyurethane waterproof material prepared with HTBS exhibited good mechanical properties,and HTBS could improve the elongation at break of polystyrene resin.

关 键 词：自由基溶液聚合 端羟基聚丁二烯-苯乙烯橡胶 微观结构 力学性能 

分 类 号：TQ333.1[化学工程—橡胶工业]