星型嵌段共聚丁苯抗冲透明树脂的合成

潘广勤

摘　要：研究了以丁基锂为引发剂，在环己烷溶剂中合成抗冲及透明性颇佳的星型丁二烯－苯乙烯共聚嵌段树脂(简称为ITPS)主要的影响因素。结果表明以正丁基锂为引发剂制备的ITPS透明性好；偶合剂用甲基三甲氧基硅烷可以达到偶合效率、力学性能及透明性三者兼顾；m(丁二烯)/m(苯乙烯)＝20／80所合成ITPS的各项性能最佳；四氢呋喃的加入使聚丁二烯分子链段中的反1，4－结构明显减少，1，2－结构增加，且ITPS的弯曲强度与其用量成正比；后处理方式和组合防老剂可以分别使ITPS透光率提高16.6%及11.1%。
关键词：星型嵌段树脂；丁二烯－苯乙烯共聚；丁基锂；偶合剂；四氢呋喃；组合防老剂；力学性能；透光率
分类号：TQ333.1　文献标识码：A
文章编号：1005-3174(2001)01-0025-04

Synthesis of a star-type block butadiene-styrene copolymerization resin with impact and transparent behavior by n-butyl lithium initiator

PAN Guang-qin（Latex center of Lanzhou Chemical Industry Corporation,CNPC，Lanzhou　730060,China）　

Abstract：The influence of t-butyl and n-butyl lithium initiator,butadiene and styrene ratio,coupler,butylenes oxide,mixed protective agent and fine treat on synthesis of star-type block butadiene-styrene copolymerization resin with transparent and impact(abbreviation as ITPS) were discussed.The result shows that the transparent of ITPS was fairly good by n-butyl lithium initiator;the best balance on couple rate,mechanics and transparent of ITPS was achieved by methyl-trimethoxysilicone coupler;ITPS properties were optimum that butadiene and styrene ratio equals 20/80;the effect of butylenes oxide were remarkable on tran-1,4 and vinyl structure of polybutadiene.Besides,16.6% and 11.1% transparent of ITPS were increased respectively by fine treatment and mixed protective agent.
Keywords：star-type block resin;butadiene-styrene copolymerixation;butyl lithium;butylenes oxide;impact and transparent;coupler and protectant;mechanics property

参考文献：

［1］Preparation of alkenyl aromatic monomer butadiene rubber and preparation of impact resistant resin therefrom［P］.USP 4 362 849，1982.
［2］Clear impact resistant thermoplastic star-block copolymers［P］.USP 4 346 198,1982.
［3］Transparent impact polystyrene plastics of multiple block copolymers［P］.GB 1 415 717,1978.
［4］Resinous branched block copolymers［P］.USP 3 639 517，1972.
［5］Carbon dioxide and water treatment of coupled lithium initiated polymer［P］.USP 3 801 520，1974.
［6］苏联化学手册(Ⅱ).

收稿日期：2000年12月11日

出版日期：2001年2月1日