基体炭种类对C/C复合材料断裂韧性的影响  

Effect of different matrix on C/C composites fracture toughness

作　　者：杨柳[1] 姜韬[1] 韩明[2] 尹术帮[1] YANG Liu;JIANG Tao;HAN Ming;YIN Shu-bang(Xi＇ an Aerospace Composites Research Institute, Xi＇an 710025, China;Military Representative Office in the 210 Research Institute of China Aerospace Science and Industry Corporation, Xi ＇an 710065,China)

机构地区：[1]西安航天复合材料研究所,西安710025 [2]中国人民解放军驻210所军事代表室,西安710065

出　　处：《炭素》2018年第2期16-19,26,共5页Carbon

摘　　要：以针刺网胎/无纬布为预制体,采用CVD法和液相浸渍法制备了热解炭基、树脂炭基、沥青炭基C/C复合材料,并研究了这些材料的断裂韧性及其断裂机理。研究表明:沥青炭基C/C复合材料的XY向断裂韧性明显高于热解炭基和树脂炭基,其XY向和Z向分别达到4.54MPa·m^(1/2)和3.15 MPa·m^(1/2),表现为假塑性断裂;三种基体炭C/C复合材料的XY向断裂韧性均大于Z向。Pyrocarbon-matrix, resin-matrix, pitch-matrix C/C composites reinforced by non-woven cloth/network carbon felts were prepared by chemical vapor deposition（CVD） and liquid-phase impregnation. The fracture toughness and fracture mechanism of three kinds of carbon matrices C/C composites were investigated. The results show that fracture toughness of pitch-matrix C/C composites in the direction XY was higher than Pyrocarbon-matrix, resin-matrix C/C composites, the direction XY and the direction Z reached 4.54 MPa·m^（1/2） and 3.15 MPa·m^（1/2） respectively, showed pseudoplastic fracture obviously and the fracture toughness of the direction XY was higher than the direction Z.

关 键 词：C/C复合材料 基体炭 断裂韧性 

分 类 号：TQ165[化学工程—高温制品工业]