【摘要】 用过氧化环已酮-硫酸亚铁引发体系,同时连续加入氯丁二烯单体和引发剂,乳液聚合得到端羧基液体聚氯丁二烯,经IR和NMR证明氯丁二烯单元以反1,4-结构,头-尾方式相连接。这种液体橡胶对环氧树脂有一定增韧效果。更多还原

【Abstract】 Liquid carboxyl-terminated polychloroprene(CTCP) was synthesized by means of emu-lsion polymerization using cyclohexone peroxide(CHPO)-ferrous sulfate as redox initia-tor.During polymerization process,chloroprene and CHPO solution were added to the rea-ction mixture continually. The results of IR and NMR determination of CTCP indcatethat chloroprene units are mainly of trans 1,4-structure and connecte each other in thehead-to-tail form. Epoxy resin could be toughened by this liquid rubber in certainextent.更多还原