短炭纤维/树脂炭复合材料导热系数与石墨化度之间的关系

材料工程, 2003, (9): 18-21. doi: 10.3969/j.issn.1001-4381.2003.09.005

短炭纤维/树脂炭复合材料导热系数与石墨化度之间的关系

张福勤 ^1, , 黄启忠 ^2, , 黄伯云 ^3, , 熊翔 ^4,

1.中南大学粉末冶金国家重点实验室,长沙,410083

2.中南大学粉末冶金国家重点实验室,长沙,410083

3.中南大学粉末冶金国家重点实验室,长沙,410083

4.中南大学粉末冶金国家重点实验室,长沙,410083

基金项目: 国家工业性试验项目(计高技1998-1871)

关键词：树脂炭 , C/C复合材料 , 石墨化度 , 导热系数

Relationship between Thermal Conductivity and Graphitization Degree of a Chopped Carbon Fiber/Resin-derived Carbon Composite

采用脉冲激光闪光法和XRD,分析了一种中间相沥青基短炭纤维/树脂炭复合材料的导热系数与石墨化度之间的关系,建立了两者之间的定量数学模型,并运用声子导热机制对其机理进行了探讨.结果表明,复合材料在平行于层面方向的室温导热系数约为垂直方向的6倍,但均随石墨化度的升高、石墨微晶尺寸的增大而逐渐升高,两个方向导热系数λ与石墨化度g之间关系分别符合公式:λ=53.78+0.28exp(g/13.75)及λ=4.95+0.94exp(g/25.22).

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短炭纤维/树脂炭复合材料导热系数与石墨化度之间的关系

Relationship between Thermal Conductivity and Graphitization Degree of a Chopped Carbon Fiber/Resin-derived Carbon Composite

参考文献