新型乙炔封端聚酰亚胺的制备及性能

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (7): 1445.

新型乙炔封端聚酰亚胺的制备及性能

杜影, 党国栋, 胡南滔, 周宏伟, 陈春海

吉林大学化学学院, 麦克德尔米德实验室, 长春 130012

收稿日期:2008-11-28 出版日期:2009-07-10 发布日期:2009-07-10
通讯作者: 陈春海, 男, 博士, 教授, 主要从事特种工程塑料研究. E-mail: cch@jlu.edu.cn
基金资助:
国家“八六三”计划(批准号: 2007AA03A231)资助.

Preparation and Characterization of Acetylene-terminated Polyimide

DU Ying, DANG Guo-Dong, HU Nan-Tao, ZHOU Hong-Wei, CHEN Chun-Hai*

Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, China

Received:2008-11-28 Online:2009-07-10 Published:2009-07-10
Contact: CHEN Chun-Hai. E-mail: cch@jlu.edu.cn
Supported by:
国家“八六三”计划(批准号: 2007AA03A231)资助.

摘要/Abstract

摘要：

用双酚A型二醚二酐(BPADA)和3-乙炔基苯胺(m-APA)进行缩聚反应合成了乙炔基封端的聚酰亚胺预聚体, 并对预聚体的熔体黏度、稳定性和热性能等进行研究. 结果表明, 此类预聚体具有较宽的加工窗口和较低的加工温度, 适合模压成型工艺制备树脂基复合材料. 预聚体经250 ℃固化后显示了优异的热性能, 动态力学分析显示其玻璃化转变温度为363 ℃, 在氮气和空气气氛下5%热失重温度分别为490和492 ℃.

关键词: 聚酰亚胺; 预聚体; 双酚A型二醚二酐; 3-乙炔基苯胺

Abstract:

A new acetylene-terminated pre-polyimide was synthesized from 2,2-bis[4-(3,4-dicarboxyphenoxy) phenyl] propane dianhydride(BPADA) and 3-ethynylaniline(APA). The crosslinking behavior of the prepolymer was studied by differential scanning calorimetry and infrared measurements. The prepolymer bearing isopropylidene moiety exhibits a much lower melt viscosity at low temperature, and thus provides a wider processing window. The polyimide film cured at 250 ℃ had a glass transition temperature(T_g) at 363 ℃(tanδ). The thermal properties of the cured films were also evaluated. TGA curves show that the temperatures of 5% weight loss(T_d5) of the cured film are 490 ℃ in nitrogen and 492 ℃ in air.

Key words: Polyimide; Prepolymer; 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl] propane dianhydride; 3-Ethynylaniline(m-APA)

TrendMD:

杜影, 党国栋, 胡南滔, 周宏伟, 陈春海. 新型乙炔封端聚酰亚胺的制备及性能. 高等学校化学学报, 2009, 30(7): 1445.

DU Ying, DANG Guo-Dong, HU Nan-Tao, ZHOU Hong-Wei, CHEN Chun-Hai*. Preparation and Characterization of Acetylene-terminated Polyimide. Chem. J. Chinese Universities, 2009, 30(7): 1445.