固体火箭技术2017，Vol.40Issue(2)：221-227,7.DOI:10.7673/j.issn.1006-2793.2017.02.016
针刺预制体参数对C/C复合材料力学性能的影响
Effect of needle-punched preform parameters on the mechanical properties of carbon/carbon composites
摘要
Abstract
Carbon fiber preforms were prepared and then densified to produce carbon/carbon composites using needle-punching and chemical vapor infiltration technique,respectively.The effects of the preform manufacturing parameters,including the needlepunched density and its depth,and the mass-to-area (M/A) ratio of short-cut fiber felt,on the mechanical properties of the composites were investigated.The relation between the mechanical properties of the composites and the bulk density of the preforms was also discussed.Results show that the tensile strength of the composites increase and thereafter decrease as the needle-punched density increased from 20 to 50 pin/cm2,while the interlaminar shear strength of the composites tends to increase.The tensile and interlaminar shear strengths exhibit an increasing tendency with the increase of needle-punched depth from 10 to 16 mm,whereas they reduce as the M/A ratio of short-cut fiber felt is increased from 100 to 300 g/m2.Both the tensile and interlaminar shear strengths are dominated by the preform density when only one parameter of the needle-punched density and its depth,and the M/A ratio was varied.The preform density could be employed as a key macro-parameter to predict the mechanical properties of the composites.关键词
C/C复合材料/针刺参数/针刺预制体/力学性能Key words
carbon/carbon composites/preform/needle-punched parameters/mechanical properties分类
航空航天引用本文复制引用
郑金煌,李贺军,崔红,张晓虎,邓海亮..针刺预制体参数对C/C复合材料力学性能的影响[J].固体火箭技术,2017,40(2):221-227,7.基金项目
National Natural Science Foundation of China (51202233) （51202233）
Equipment Advanced Research Foundation of China (9140A12060514HT43190) （9140A12060514HT43190）
