聚三唑树脂的催化固化及其复合材料制备与性能

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (8): 35-40.

聚三唑树脂的催化固化及其复合材料制备与性能

许建文, 万里强^*, 张存超, 郭冰

华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海 200237

收稿日期:2014-03-14 出版日期:2014-08-28 发布日期:2021-09-13
通讯作者: 万里强,wanliqiang@163.com。
作者简介:许建文(1988-),男,硕士,主要从事耐高温树脂以及复合材料制备及性能研究相关工作。本文作者还有黄发荣。
基金资助:
上海市重点学科资助(B502)

PREPARATION AND PROPERTIES OF CARBON FIBERS REINFORCED PTA COMPOSITES UNDER CATALYTIC CURING PROCESS

XU Jian-wen, WAN Li-qiang^*, ZHANG Cun-chao, GUO Bing

Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2014-03-14 Online:2014-08-28 Published:2021-09-13

摘要/Abstract

摘要： 为了降低固化温度,简化固化工艺,在聚三唑树脂(PTA)体系中加入三苯基磷溴化亚铜作为催化剂,根据催化剂的用量与凝胶时间的关系,确定催化剂用量为最少单体摩尔量的3‰。在催化条件下,按照50℃/6h+100℃/2h+150℃/2h的固化程序模压制备复合材料(C-PTA/T300B),研究了催化剂对复合材料玻璃化转变温度(T_g)、热稳定性(T_d5)和力学性能的影响。结果表明,与未催化复合材料(PTA/T300B)相比,在力学性能保持不变的前提下,C-PTA-T300B复合材料的固化温度降低了30℃,后处理工艺得到极大简化;T_g提高了21℃;空气中T_d5提高了10℃,氮气中T_d5提高了5℃。

关键词: 聚三唑树脂, 催化剂, 低温固化, 成型工艺优化

Abstract: To reduce the curing temperature and simplify the curing process, bromotris (triphenylphosphine) copper (Ⅰ) was added into the polytriazole resin system (PTA) as the catalyst. According to the relationship between the amount of catalyst and the gel time of PTA, the amount of catalyst was determined to be as 3‰ of the least molar amount of the monomer. Under catalytic conditions, PTA composites reinforced by T300B carbon fiber (C-PTA/T300B) were prepared in the curing process of 50℃/6h+100℃/2h+150℃/2h. The influences of catalyst to the glass transition temperature (T_g), 5%-weight-loss temperature (T_d5) and mechanical properties of C-PTA/T300B composites were studied. Compared with the non-catalytic PTA composites reinforced by T300B carbon fiber (PTA/T300B), the results showed that to aehieve same mechanical properties, the curing temperature of C-PTA-T300B composites decreased 30℃, which greatly simplifies the after-treatment process. Moreover, the T_g was 21℃ enhanced, and the T_d5 was 21℃ and 5℃ promoted in air and N₂ environment, respectively.

Key words: polytriazole resin, catalyst, low temperature curing, molding process optimum

中图分类号:

TB332

许建文, 万里强, 张存超, 郭冰. 聚三唑树脂的催化固化及其复合材料制备与性能[J]. 复合材料科学与工程, 2014, 0(8): 35-40.

XU Jian-wen, WAN Li-qiang, ZHANG Cun-chao, GUO Bing. PREPARATION AND PROPERTIES OF CARBON FIBERS REINFORCED PTA COMPOSITES UNDER CATALYTIC CURING PROCESS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(8): 35-40.

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