以整体毡为增强体,丙烯和糠酮树脂为前驱体,采用分区CVI法和树脂浸渍/固化、炭化相结合的工艺制备了厚壁C/C复合材料,用CT机和偏光显微镜观察了材料的微观结构,并进行了热力学性能测试,结果与热梯度CVI法进行了对比.研究结果表明:分区CVI法制备的热解碳为光滑层结构,整体密度均匀,与热梯度CVI工艺相比,总CVI增密效率提高了近一半,特别是沉积后期,表现出明显的优势.同时,轴向压缩强度提高了28.5％；径向压缩强度提高了33.6％.线胀系数相当.通过研究认为,分区CVI法能很好的提高材料的增密效率和增密均匀性,降低成本,且材料最终具有优异的热力学性能.
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