以三种沥青作为基体前驱体,实验室自制的AR中间相沥青基纤维为增强体,通过500℃热压成型,随后经炭化和石墨化处理制备出一维炭/炭(C/C)复合材料.研究了前驱体沥青种类和热处理温度对复合材料导热性能的影响,并采用扫描电子显微镜和偏光显微镜对其石墨化样品的形貌和微观结构进行表征.结果表明;C/C复合材料在沿纤维轴向的室温热扩散系数和导热率均随热处理温度的升高而逐渐增大;由AR沥青作为基体前驱体所制备的C/C复合材料具有更加明显的沿纤维轴向取向的石墨层状结构以及最好的导热性能,其3000℃石墨化样品沿纤维轴向的室温热扩散系数和导热率分别达到594.5 mm2/s和734.4 W/(m.K).
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