摘要
改善PPTA性能的有效方法是在聚合体系中加入第三、四单体,进行共缩聚。文中介绍了在主链中引入芳香醚类结构,取代对苯和间苯结构,萘基、蒽基、联苯基等刚性结构,脂肪族柔性结构,杂环结构及二炔类结构和N取代结构等的改性研究现状,并评价了各种方法的改性效果。
Copolycondensation by adding third or fourth monomer into the polymerization system is an efficient way to improve the properties of PPTA. Status of research on modification of PPTA by ieading the rigid structures such as aromatic ether, substituted p-or o-phenyl, naphthyl, anthryl and biphenytyl, flexible structures of aliphatic groups and structures of heterocyclics anddiacetylenics etc. into the main chain was described. The effects of modification by vatious methcds were also evaluated.
出处
《现代化工》
CAS
CSCD
北大核心
1992年第6期12-15,24,共5页
Modern Chemical Industry
关键词
缩聚
改性
纤维
芳纶
aromatic polyamid, copolycondensation, fibre, modification
