高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (1): 145.

• 论文 • 上一篇    下一篇

刚性链嵌段共聚物的研究(Ⅲ)──PEEK/HTA有规嵌段共聚物的合成与性能

曹俊奎, 苏文成, 周文胜, 周凤岐, 吴忠文   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1993-01-16 修回日期:1993-06-08 出版日期:1994-01-24 发布日期:1994-01-24
  • 通讯作者: 曹俊奎,53岁,副教授
  • 作者简介:曹俊奎,53岁,副教授
  • 基金资助:

    国家自然科学基金

Studies on the Rigid-Rigid Block Copolymers(Ⅲ)──Synthesis and Properties of PEEK/HTA Block Copolymers

CAO Jun-Kui, SU Wen-Cheng, ZHOU Wen-Sheng, ZHOU Feng-Qi, WU Zhong-Wen   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1993-01-16 Revised:1993-06-08 Online:1994-01-24 Published:1994-01-24

摘要: 采用PEEK和HTA齐聚物的溶液缩聚法制备了HTA含量不同的刚性链嵌段共聚物系列样品,用IR、DSC、TGA、WAXD和动态粘弹谱等手段对共聚物进行表征并研究了热性能和结晶行为。结果表明,该组成范围的共聚物未发生微相分离,共聚物的结晶结构与PEEK相同,结晶度随HTA含量增加而迅速下降。含HTA37.24%的共聚物Tg=183℃,比纯PEEK高40℃。新型嵌段共聚物的熔点稍低于PEEK,具有良好的力学性能。

关键词: 聚醚醚酮/含联苯聚芳醚砜共聚物, 刚性嵌段共聚物, 热性能, 结晶行为

Abstract: A series of rigid-rigid block copolymers composed of poly(etheretherketone)(PEEK) and poly(arylethersulfone) with biphenyl structure(HTA) were synthesized by polycondensation.The characterization,thermal properties and crystallization behaviour of the block copolymers were investigated by DSC,TGA,WAXD,and dynamic viscoelastic measurement.The results show that for the copolymers no phase separation is observed.The copolymers are crystalline polymers similar to PEEK,the crystallinity measured by DSC decreases obviously with increasing HTA content.The Tg of the copolymer containing 37.24%HTA is 183℃,and is 40℃ higher than that of pure PEEK. The melting point of the copolymer is nearly as high as that of pure PEEK.The PEEK/HTA copolymers have very good high temperature mechanical property.

Key words: PEEK/HTA copolymer, Rigid-rigid block copolymer, Thermal property, Crystallization behaviour

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