碳纤维硅胶复合材料中碳纤维排列结构与导热性能研究  

Study on carbon fiber alignment structure and thermal conductivity in carbon fiber silicone composites

作　　者：陈宇迪[1] 邹涛[1] 赵瑾[1] 郭姝[1] 洪丽[1] 李嘉铭 Chen Yudi;Zou Tao;Zhao Jin;Guo Shu;Hong Li;Li Jiaming(Beijing Center for Physical and Chemical Analysis,Beijing 100089,China)

机构地区：[1]北京市理化分析测试中心,北京100089

出　　处：《分析仪器》2020年第5期111-116,共6页Analytical Instrumentation

摘　　要：通过对比不同工艺制备的碳纤维硅胶导热复合材料,研究不同工艺对复合材料导热性能的影响,并用扫描电镜观察碳纤维在硅胶基体中的结构与排列状态。研究结果表明,不同工艺制备的复合材料导热性能差异巨大,导热系数相差能达到百倍,通过扫描电镜可以看出不同工艺制备的复合材料中,碳纤维的结构有明显的差异,碳纤维轴向与导热方向一致时导热性能最好。因此如何控制碳纤维在复合材料中有序排列是提高导热性能的关键。The effects of different processes on the thermal conductivity of the composites were studied,and the structure and arrangement of carbon fibers in the silica gel matrix were observed with a scanning electron microscope.The research results showed that the thermal conductivity of composites prepared by different processes varied greatly,and the difference of thermal conductivity could reach one hundred times,the structure of carbon fibers was different obviously.The best thermal conductivity was consistent.Therefore,how to control the orderly arrangement of carbon fibers in composites is the key to improve thermal conductivity.

关 键 词：碳纤维 导热系数 导热复合材料 复合结构 

分 类 号：TN403[电子电信—微电子学与固体电子学] TB332[一般工业技术—材料科学与工程]