In order to improve the thermal shock and ablation resistance of high thermal conductivity carbon/carbon composites, carbon nanotubes (CNTs) were introduced by electrophoretic deposition. After modification, the flexural strength of the composites increases by 53.0% due to the greatly strengthened interfaces. During thermal shock between 1100 °C and room temperature for 30 times, the strength continues to increase, attributed to the weakened interfaces in favor of fiber and CNT pull-out. By introducing CNTs at interfaces, thermal conductivity of the composites along the fiber axial direction decreases and that along the fiber radial direction increases. As the thermal shock process prolongs, since the carbon structure integrity of CNT and matrix in the modified composites is improved, the conductivity increases whatever the orientation is, until the thermal stress causes too many defects. As for the anti-ablation performance, the mass ablation rates of the CNT-modified composites with fibers parallel to and vertical to the flame decrease by 69.6% and 43.9% respectively, and the difference in the mass ablation rate related with fiber orientations becomes much less. Such performance improvement could be ascribed to the reduced oxidative damage and the enhanced interfaces.

为了改善高热导率碳/碳复合材料的热冲击和抗烧蚀性，通过电泳沉积引入了碳纳米管（CNT）。改性后，由于界面大大增强，复合材料的弯曲强度提高了53.0％。在1100°C和室温之间的热冲击下进行30次后，强度继续增加，这归因于界面变弱，有利于纤维和CNT的拔出。通过在界面处引入CNT，复合物沿纤维轴向的导热率降低，而沿纤维径向的导热率提高。随着热冲击过程的延长，由于改性复合材料中CNT和基体的碳结构完整性得到改善，因此无论取向如何，电导率都会增加，直到热应力导致太多缺陷为止。至于抗烧蚀性能，具有平行于和垂直于火焰的纤维的CNT改性复合材料的质量烧蚀率分别降低了69.6％和43.9％，并且与纤维取向有关的质量烧蚀率的差异变得很大。减。这种性能的提高可以归因于减少的氧化损伤和增强的界面。