表面改性自金属化技术制备表面导电热固性聚酰亚胺复合材料  

Preparation of surface conductive thermosetting polyimide composites by surface modification self-metallization process

作　　者：张嘉阳 倪洪江 龚明 李军 张代军 陈祥宝 ZHANG Jiayang;NI Hongjiang;GONG Ming;LI Jun;ZHANG Daijun;CHEN Xiangbao(Beijing Institute of Aeronautical Materials,Aero Engine Corporation of China,Beijing 100095,China;National Key Laboratory of Advanced Composites,Beijing 100095,China)

机构地区：[1]中国航空发动机集团有限公司北京航空材料研究院,北京100095 [2]先进复合材料国防科技重点实验室,北京100095

出　　处：《复合材料学报》2021年第10期3247-3254,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51803201)。

摘　　要：采用碱刻蚀/离子交换的方法对碳纤维增强热固性聚酰亚胺基复合材料进行了表面自金属化,制备了表面覆银导电聚酰亚胺复合材料。表征了聚酰亚胺复合材料表面酰亚胺五元环开环程度随碱液刻蚀条件的变化,研究了碱液刻蚀、酸洗、离子源和离子交换时间对复合材料表面导电性和力学性能的影响。当碱液刻蚀5 h、离子交换9 h时,热固性聚酰亚胺复合材料表面方块电阻可达0.26Ω·sq^(-1),且基本力学性能得到保持。Carbon fiber reinforced thermosetting polyimide composites were surface self-metallized by alkali modification/ion exchange method, and silver-coated conductive polyimide composites were prepared. The degree of ring-cleavage reaction of imide five-membered rings on the surface of polyimide composites was characterized as a function of alkali modification conditions. The effects of alkali modification, acid washing, ion source and ion exchange time on the surface conductivity and mechanical properties of polyimide composites were investigated.When modify in alkali solution for 5 h and ion exchange for 9 h, the surface resistance of thermosetting polyimide composites can reach 0.26 Ω·sq^(-1), and the basic mechanical properties are maintained.

关 键 词：热固性聚酰亚胺复合材料 金属化 碱刻蚀 导电性 力学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]