应用化学 ›› 1996, Vol. 0 ›› Issue (2): 57-60.

• 研究论文 • 上一篇    下一篇

聚醚醚酮酮(PEEKK)-含联苯聚醚醚酮酮(PEBEKK)共聚物的TgTm转变

张宏放1, 莫志深1, 那辉2, 吴忠文2   

  1. 1. 中国科学院长春应用化学研究所 长春 130022;
    2. 吉林大学化学系 长春
  • 收稿日期:1995-08-30 修回日期:1995-11-27 出版日期:1996-04-10 发布日期:1996-04-10
  • 基金资助:
    国家自然科学基金

Transformation of Tg and Tm for PEEKK-PEBEKK Copolymers with Various Biphenyl Content

Zhang Hongfang1, Mo Zhishen1, Na Hui2, Wu Zhongwen2   

  1. 1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
    2. Department of Chemistry, Jilin University, Changchun
  • Received:1995-08-30 Revised:1995-11-27 Published:1996-04-10 Online:1996-04-10

摘要: 不同联苯含量的PEEKK-PEBEKK共聚物的DSC结果表明,随着联苯含量的增加,共聚物的玻璃化转变温度Tg几逐渐升高;共聚物的熔点Tm明显地依赖于联苯含量,当联苯含量nB=0.35时,Tm值最4小。热处理可以显着地改善共聚物的结晶性,并出现熔融重结晶双峰。

关键词: 含联苯聚醚醚酮酮共聚物, TgTm转变, DCS, 热处理

Abstract: Transformational behaviour of Tg and Tm for PEEKK-PEBEKK copolymers with various biphenyl content was studied by using DSC. Results revealed that the glass transition temperature Tg for the copolymers gradually increased with increasing biphenyl content nB. The melting points Tm of the copolymers obviously depended on nB. Tm value was minimum when nB=0.35. Heat behaviour of the copolymers could be markedly changed by heat treatment. Behaviour of double melting peak for the copolymer resulted from the crystal melting and the recrystallization was also studied.

Key words: poly (ether ether Ketone ketone)-poly (ether biphenyl ether ketone ketone) copolymer, transformation of Tg and Tm, DSC, heat treatment