BPDA/ODA体系微支化交联聚酰亚胺薄膜制备与性能研究  

Preparation and Properties of BPDA/ODA Polyimide Films with Micro-branched Crosslinked Structure

作　　者：韩书豪 周涵 王健华 齐胜利[1] 田国峰[1] 武德珍[1] HAN Shuhao;ZHOU Han;WANG Jianhua;QI Shengli;TIAN Guofeng;WU Dezhen(Key Laboratory of Carbon Fiber and Functional Polymers,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《绝缘材料》2021年第11期94-99,共6页Insulating Materials

基　　金：国家自然科学基金资助项目(51773007);中央高校基本科研业务费专项资金项目(XK1802-2)。

摘　　要：以三官能度的1,3,5-三(4-氨基苯氧基)苯(TAPOB)为交联剂,在3,3′,4,4′-联苯四甲酸二酐(BPDA)和4,4′-二氨基二苯醚(ODA)体系聚酰亚胺(PI)薄膜中构建微支化交联结构,制备出一系列具有不同TAPOB含量的PI薄膜,研究了TAPOB含量对薄膜力学性能、热力学性能、介电性能和吸水率的影响。结果表明:TAPOB的引入可明显提高BPDA/ODA体系PI薄膜的综合性能,交联结构的存在有利于提高薄膜的力学性能、降低热膨胀系数(CTE)和吸水率,微支化结构则对降低介电常数有一定的作用。Taking 1,3,5-tri(4-aminophenoxy)benzene(TAPOB)as crosslink agent,a micro-branched crosslinked structure was constructed in 3,3′,4,4′-biphenyltetracarboxylic dianhydride(BPDA)and 4,4′-diaminodiohenyl ether(ODA)polyimide(PI)film,and a series of PI films with different TAPOB content were prepared.The effects of TAPOB content on the mechanical properties,thermomechanical properties,dielectric properties,and water absorption were studied.The results show that the addition of TAPOB can improve the comprehensive properties of BPDA/ODA PI films significantly.The existence of crosslinked structure is conductive to improve the mechanical properties,decrease the coefficient of thermal expansion(CTE)and water absorption of the film,and the micro-branched structure has a certain effect on reducing the dielectric constant.

关 键 词：聚酰亚胺 薄膜 微支化 交联 

分 类 号：TM215.3[一般工业技术—材料科学与工程] TQ323.7[电气工程—电工理论与新技术]