C/C复合材料飞机刹车盘的结构与性能

Structure and properties of carbon/carbon composite materials for aircraft brake discs

采用企业、行业及国家相关标准的试验方法,对超码复合材料公司,英国Dunlop公司,法国CarbonIn-dusty公司,美国B.F.Goodrich、ALS公司等生产的9种C/C复合材料飞机刹车盘的物理、力学、热学、摩擦磨损的性能特征,以及中南大学生产的C/C复合材料刹车盘的有关性能,进行了对比分析。结果表明,选择适宜的炭纤维预制体结构,控制热解炭基体微观结构为光学粗糙层结构,合理的热处理温度是获得高性能炭刹车盘材料的关键。我国拥有自主知识产权研发的大型民机炭刹车盘在高摩擦特性方面获得了重大突破,已用于波音757-200型飞机,实现了国内C/C复合材料具有里程碑意义的第四个重大突破。

Mechanical, physical, thermal, frictional and wear properties of nine carbon/carbon composite materials as aircraft brake discs made by the Chaoma composite material company, Dunlop, Carbon Industry company, B. F. Goodrich, ALS and South-middle University were characterized and compared. Correlation of raw materials and processing parameters by which they were made with their performance was also investigated. Results indicated that an optimum structure of the carbon fiber preform, heat treat temperature, and controlled pyrolysis to form a carbon matrix with a rough laminar microstructure are the key factors to obtain carbon brake disc materials with excellent properties. Homemade carbon brake discs of high quality for large civil aircraft, such as the Boeing 757-200, could be regarded as a breakthrough in the carbon/carbon materials field in China.