CAJ | 학술논문

针对碳纤维在碳／碳烧蚀防热复合材料中应用的基础问题，论述了不同碳纤维结构、成分、表面特征，及其力学性能和热物理性能的高温演变规律，揭示了碳纤维灰分含量对碳纤维力学性能和热氧化性能的影响。确定了在碳／碳复合材料复合成型过程中，碳纤维结构受基体碳影响的变化规律和碳纤维表面特征对碳／碳材料宏观力学性能的影响。阐明了碳／碳复合材料中碳纤维的力学性能对纤维发生折断烧蚀的阻碍作用和通过控制碳／碳成型最高温度实现提高性能的途径。
침대탄섬유재탄／탄소식방열복합재료중응용적기출문제，논술료불동탄섬유결구、성분、표면특정，급기역학성능화열물이성능적고온연변규률，게시료탄섬유회분함량대탄섬유역학성능화열양화성능적영향。학정료재탄／탄복합재료복합성형과정중，탄섬유결구수기체탄영향적변화규률화탄섬유표면특정대탄／탄재료굉관역학성능적영향。천명료탄／탄복합재료중탄섬유적역학성능대섬유발생절단소식적조애작용화통과공제탄／탄성형최고온도실현제고성능적도경。
To resolve the basic application problems of carbon fibers in ablative heat protection composites, the high temperature revolution of the structures, elemental contents and surface features of carbon fibers were discussed and their mechanical and thermal physical properties were also given. The influence of ash content on the mechanical and anti-oxidation properties of carbon fibers was disclosed. The microstructure development of carbon fibers, influenced by carbon matrix, was determined during the formation process of C/C composites. The mechanical performance of C/C composite was influenced by the surface features of the carbon fibers used as the raw materials. The carbon fibers with high mechanical performance can prevent their fracture during ablation. By control the maximum heat-treat temperature during the man- ufacture of C/C composites, their mechanical performance can be increased.