阳离子-π动态交联高性能聚芳吲哚醚酮的构筑  

Construction of High-performance Crosslinked Poly(indole ether ketone)Driven by Cation-πInteraction

作　　者：周威远 梁倩倩 杨莉[1,2] 常冠军 ZHOU Weiyuan;LIANG Qianqian;YANG Li;CHANG Guanjun(State Key Laboratory of Environment-friendly Energy Materials&School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;National Engineering Technology Center for Insulation Materials,Mianyang 621010,China)

机构地区：[1]环境友好能源材料国家重点实验室,西南科技大学材料与化学学院,四川绵阳621010 [2]国家绝缘材料工程技术研究中心,四川绵阳621010

出　　处：《塑料工业》2024年第1期36-39,共4页China Plastics Industry

基　　金：国家自然科学基金(21973076);中央引导地方科技发展专项项目(2022ZYD0025);四川省杰出青年科技人才基金(2021JDJQ0033);中国工程物理研究院创新发展基金(CX20210039)。

摘　　要：玻璃化转变温度(Tg)和热稳定性是聚合物重要的物理性能,影响了材料的应用领域。交联被认为是提高Tg和热稳定性的重要方法之一。本文以4,4-二氟二苯酮和4-羟基吲哚为单体,通过亲核取代反应成功制备了线型聚芳吲哚醚酮(PINEK),并通过简易的浸泡碱性水溶液的方式实现了PINEK的阳离子-π动态交联。与传统的线型聚醚醚酮(PEEK)和PINEK相比,交联型聚芳吲哚醚酮(C-PINEK)表现出较高的Tg(Tg=251℃)和优异的热分解温度(Td=501℃)。The glass transition temperature and thermal stability were two important physical properties of polymers,which affected the application fields of the materials.Crosslinking was considered as one of the important methods to improve the glass transition temperature and thermal stability.Linear poly(indole ether ketone)(PINEK)had been obtained by the condensation polymerization of 4,4-difluoro diphenylmethanone with 4-hydroxyindole via nucleophilic substitution reaction.The cation-πcross-linked K-PINSU was prepared by soaking PINEK in alkaline aqueous solution.Comparing with the traditional linear poly(ether ether ketone)(PEEK)and PINEK,the K-PINSU shows higher glass transition temperature(Tg=251℃)and decomposition temperature(Td=501℃).

关 键 词：高性能聚合物 聚芳吲哚醚酮 阳离子-π作用 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]