摘要
采用不含碱金属离子的氧化还原复合引发体系,以丙烯腈为第一单体,衣康酸为共聚单体,使用水相沉淀聚合法制备碳纤维用聚丙烯腈。研究了不同复合引发剂,单体配比,聚合反应温度和引发剂氧还比的改变对共聚反应的影响。结果表明,在不影响转化率的同时,以过硫酸铵和亚硫酸铵组成的复合引发体系反应温度比单引发剂至少降低了1/3,得到的聚合物热性能有明显提高。
Acrylonitrile and itaconic acid copolymer,which is used in carbon fiber,was synthesized by the continuous aqueous deposited polymerization using composite redox initiator.The effect of different composite initiator,monomer ratio,polymerization temperature and initiator ratio on the copolymerization were investigated.From the results,it showed that using ammonium persulfate and ammonium sulfite to be composite initiator,the copolymerization temperature was reduced by a third when the conversion rate remains the same.The composite initiator has a positive effect on the thermal performance of polymer.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第3期501-504,共4页
Journal of Functional Materials
基金
国家自然科学基金重点资助项目(10979006)
关键词
丙烯腈
衣康酸
水相沉淀聚合
复合引发剂
acrylonitrile
itaconic acid
aqueous deposited polymerization
composite initiator
