纺织高校基础科学学报2023，Vol.36Issue(6)：30-37,8.DOI:10.13338/j.issn.1006-8341.2023.06.005
含萘环热致液晶聚芳酯的合成及热处理
Synthesis and thermal treatment of liquid crystal polyarylates containing naphthalene rings
摘要
Abstract
To reveal the influence of naphthalene ring to properties of polyarylate,different pro-portions of HBA/HNA liquid crystal polyarylates containing naphthalene ring were prepared by two-step melt polymerization of acetylated monomers 4-acetoxy-benzoic acid(ABA)and 6-ace-toxy-2-naphthoic acid(ANA).The structure and properties of liquid crystal polyarylates contai-ning naphthalene ring were analyzed.To investigate the effect of heat treatment on the melting and crystallization behavior of liquid crystal polyarylates containing naphthalene rings,liquid crystal polyarylates containing naphthalene rings were heat-treated at 300℃.The results showed that the naphthalene ring monomer HNA can disrupt the linear structure of the molecular chain and effectively reduce the melting point of polyarylates;Different proportions of liquid crystal polyarylates containing naphthalene ring exhibited different melting and crystallization behaviors after heat-treatment.The melting point and crystallization temperature of B70-N30 polyarylate gradually increase with the extension of heat-treatment time(melting point gradually increases from 213.1℃ to 277.6℃),while B90-N10 polyarylate showed the opposite trend(melting point gradually decreases from 311.6℃ to 290.1℃),indicating that B70-N30 polyarylate has better adjustable and controllable melting temperature.关键词
液晶聚芳酯/萘环/热处理/熔融结晶行为Key words
liquid crystal polyarylate/naphthalene ring/heat-treatment/melting and crystalliza-tion behavior分类
轻工纺织引用本文复制引用
陈宇锋,王旭东,黄铄涵,罗艇,邵群,王燕萍,夏于旻..含萘环热致液晶聚芳酯的合成及热处理[J].纺织高校基础科学学报,2023,36(6):30-37,8.基金项目
国家重点研发计划项目(2021YFB3700105) （2021YFB3700105）
