1-丁烯聚合中氢气对聚合物的影响  

Effects of Hydrogen in Polybutene-1 on Polymer

作　　者：许春生[1] 邵华锋[1] 姚薇[1] 黄宝琛[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《化学推进剂与高分子材料》2009年第5期44-46,共3页Chemical Propellants & Polymeric Materials

摘　　要：以TiCl4-MgCl2、Al(Et)3为催化体系合成了高等规聚1-丁烯(iPB),考察了氢气用量对聚1-丁烯结构和性能的影响。结果表明,在相同的聚合条件下,氢气能很好地降低聚合物的黏均相对分子质量(—Mη),通过控制聚合时加入氢气的量可以合成出不同加工用途的聚1-丁烯;同时—Mη的大小对聚1-丁烯的力学性能影响很大,不同—Mη的聚1-丁烯可以有3种不同的应力-应变曲线(脆性屈服、突然韧性屈服、慢慢韧性屈服)。High isotactic polybutene-1 （iPB） was synthesized by using TiCl4-MgCl2, Al（Et）3 as catalyst system. Effects of hydrogen quantity On the structure and properties of polybutene-1 were investigated. The results show that hydrogen can well reduce the viscosity average relative molecular mass（Mη） of the polymer under the same polymerization condition. Polybutene-1 for different uses in processing can be synthesized by controlling addition quantity of hydrogen in the polymerization, the Mη has great effects on the mechanical properties of polybutene-1, and polybutene-1 with different Mη may have three different types of stress-strain curves （brittle yield, abruptly ductile yield and slowly ductile yield）.

关 键 词：氢气 聚l一丁烯 黏均相对分子质量 力学性能 

分 类 号：O631.3[理学—高分子化学]