赵建国,李克智,李贺军,孙国栋,王闯

• 1:西北工业大学材料学院复合材料系
• 2:西北工业大学材料学院复合材料系
• 3:西北工业大学材料学院复合材料系
• 4:西北工业大学材料学院复合材料系

摘要(Abstract)：

利用热膨胀仪测定了炭/炭复合材料从室温到1300℃的热膨胀系数,研究了热处理温度、炭纤维取向和环境温度对炭/炭复合材料热膨胀性能的影响。结果表明由于热解炭是以层状的方式围绕炭纤维生长,所以其热膨胀各向异性,垂直于纤维方向的热膨胀大于平行于纤维方向的热膨胀。随着热处理温度的升高,炭/炭复合材料中具有乱层石墨结构的晶体有序度增加,石墨化度增大,石墨片层间的范德华作用力增强,热膨胀系数减小。随着环境温度的升高热膨胀系数先增大后减小,在1200℃有最大值。

关键词(KeyWords)： 炭/炭复合材料;热膨胀系数(CTE);热处理;热解炭;炭纤维

Abstract:

Keywords:

基金项目(Foundation): 国家“973”项目(2006CB600908)

作者(Author): 赵建国,李克智,李贺军,孙国栋,王闯

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