高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

苯乙炔封端的BTDA系列酰亚胺预聚体的研究

饶先花, 党国栋, 周宏伟, 邓勇强, 路迎宾, 陈春海, 吴忠文
   

  1. 吉林大学化学学院, 麦克德尔米德实验室, 长春 130012
  • 收稿日期:2005-10-17 修回日期:1900-01-01 出版日期:2006-09-10 发布日期:2006-09-10
  • 通讯作者: 陈春海

Phenylethynyl End-capped Polyimide Oligomers Derived from BTDA

RAO Xian-Hua, DANG Guo-Dong, ZHOU Hong-Wei, DENG Yong-Qiang, LU Ying-Bin, CHEN Chun-Hai, WU Zhong-Wen   

  1. Alan G. MacDiarmid Institiute, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2005-10-17 Revised:1900-01-01 Online:2006-09-10 Published:2006-09-10
  • Contact: CHEN Chun-Hai

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被引次数

30

摘要： 合成了具有苯侧基的二胺单体1,4-双(4'-氨基苯氧基)-2-(苯基)苯(p-TPEQ), 并与3,3',4,4'-苯酮四羧酸二酐(BTDA)进行缩聚反应, 分别以4-苯乙炔苯酐(PEPA)和4-苯乙炔-1,8-萘二甲酸酐(PENA)作为封端剂, 合成了两个系列的苯乙炔封端的酰亚胺预聚体. DSC测试结果表明, 此类预聚体具有比PETI-5更宽的加工窗口; 利用所合成的预聚体制成了具有较高热分解温度热固性交联PI薄膜. 结果表明, PI预聚体加工性能良好, 其交联后具有优异的力学和热学性能; 同时PEPA封端的预聚体树脂具有比PENA封端的树脂更为优异的综合性能.

关键词: 聚酰亚胺, 预聚体, 苯乙炔, 3,3’,4,4’-苯酮四羧酸二酐, 1,4-双(4’-氨基苯氧基)-2-(苯基)苯

Abstract:

A diamine monomer[2,5-bis(4-aminophenoxy)biphenyl(p-TPEQ)] was synthesized by four-step routes, and 4-(1-phenyl ethynyl)-1,8-naphthalic anhydride(PENA) was synthesized and characterized as well. Two series of phenylethynyl\|terminated imide oligomers were prepared by reacting BTDA with p-TPEQ, and end-capped with 4-phenylethynylphthalic anhydride(PEPA) or P
ENA. The thermal curing processes of the oligomers were investigated by FTIR, differential scanning calorimetry. As a result of undergoing a complex reaction of the phenylethynyl in the heating run, Tg increased with the increase of content of
phenylethynyl. The obtained imide oligomers were molded into films. The cured films exhibited excellent mechanical properties and thermo-oxidative stability. All the results indicate that the incorporation of p-TPEQ monomer can increase the solubility and processing ability of the oligomers.

Key words: Polyimide, Oligomer, Phenylethyne, 3,3’,4,4’-Benzophenone-tetracarboxylic dianhydride(BTDA), 1,4-Bis(4’-aminophenoxy)-2-phenylbenzene(p-TPEQ)

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