碳纤维增强酚醛树脂/石墨复合材料双极板的性能  

Properties of Carbon Fiber Reinforced PF Resin/Graphite Composite Bipolar Plate

作　　者：王彦明[1] 王威强[2] 李爱菊[3] 阴强[3] 夏利刚[3] 敖海勇[3] 童佳佳[3] 

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]山东大学机械工程学院,山东济南250061 [3]山东大学 材料液态结构及其遗传性教育部重点实验室工程陶瓷山东省重点实验室,山东济南250061

出　　处：《机械工程材料》2006年第7期4-6,10,共4页Materials For Mechanical Engineering

摘　　要：研究了碳纤维表面处理方法及其含量对碳纤维增强酚醛树脂／石墨复合材料导电性能与力学性能的影响。结果表明：空气氧化处理碳纤维表面形成微孔和刻蚀沟槽,容易形成应力集中,复合材料的强度不高；空气加液相氧化处理填充了碳纤维表面的微裂纹,对复合材料有一定的补强作用；液相氧化处理有利于提高碳纤维表面活性以及碳纤维的均匀分散性,使材料表现出较好的力学性能与导电性能；随碳纤维含量增多,材料电导率变小,材料强度开始增大,达到最大值后材料强度下降。对碳纤维进行液相氧化处理,碳纤维含量在3％～4％时复合材料的力学性能与导电性能最好。The influences of carbon fiber surface treatment and content on mechanical and conducting properties of carbon fiber reinforced PF resin/graphite composite were studied. Gas-phase oxidation treatment resulted in distribution of some micro-pores and ditches at the carbon fiber surface and led to stress concentration therefore, the composite strength was not high. Gas-phase plus liquid-phase oxidation treatment resulted in filling up of micro-pores at the carbon fiber surface and thus reinforced the composite. Liquid-phase oxidation treatment improved the carbon fiber surface activity and uniformly and thus the composite showed better mechanical and conducting property. As carbon fiber content increased, the conducting property decreased; the composite strength increased at first, then failed down. When carbon fiber was liquid-phase oxidation treated and its content was 3%- 4%, the composite had the best mechanical and conducting properties.

关 键 词：酚醛树脂/石墨复合材料 双极板 碳纤维 表面处理 

分 类 号：TM911.4[电气工程—电力电子与电力传动]