【摘要】 改善对位芳纶(PPTA)性能的有效方法是在聚合体系中加入第三、第四单体进行共缩聚改性。该文主要介绍了在聚合物主链上引入柔性结构单元、稠环芳烃、芳杂环等刚性结构单元,取代对苯、间苯结构、N取代结构、二炔类结构、超支化结构等改性方法的研究现状,并评价了各种方法的改性效果。更多还原

【Abstract】 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 introducing flexible structures, rigid structures,substituted p-or o-phenyle,dialkine structures,N substituted structures,hyperbranched structures into the main chain was described.The effects of modification by various methods were also evaluated.更多还原