分别以天然气和丙烯为前驱体制备了C/C复合材料.考察了密度和密度分布,借助偏光显微镜观察了沉积炭的显微结构,研究表明,天然气制备的C/C复合材料的密度大于丙烯制备的C/C复合材料的密度;在前60h以天然气为前驱体时C/C复合材料的致密化速率比以丙烯为前驱体时低,60h后致密化速率发生逆转;以天然气为前驱体所得C/C复合材料的密度梯度小,结构为单一的粗糙层;而以丙烯为前驱体所得C/C复合材料的密度梯度大,结构为光滑层.
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