摘要
采用等温CVI工艺制备出5种不同炭纳米纤维含量(质量分数分别为0,5%,10%,15%和20%)的炭/炭复合材料。发现添加炭纳米纤维的炭/炭复合材料具有很高的力学性能,在加入炭纳米纤维为5%时,相对于没有添加炭纳米纤维的炭/炭复合材料,弯曲强度增大了76．3%,弹性模量增大了55．5%,但添加量增大到20%时,强度和模量都逐渐降低。
Five carbon nanofibor （CNFs） reinforced carbon composites containing 0, 5%, 10%, 15% and 20% CNFs were prepared in order to investigate the effect of CNFs addition on the performance of C/C composites. The results show that the CNF- reinforced carbon composites exhibit higher mechanical properties than the composites without CNFs addition, the flexural strength of the composite with 5% of CNFs is increased by nearly 76. 3% and the flexural modulus is increased by nearly 55.5% compared to that of the composite containing no CNFs. Increasing the CNFs content to 20%, both the flexural strength and flexural modalus decrease from their maximum values at 5% loading.
出处
《炭素技术》
CAS
CSCD
2006年第4期1-5,共5页
Carbon Techniques
基金
北京大学工程研究院资助项目(204033)
教育部新世纪优秀人才资助计划(NCET-05-0195)
北京市科技计划项目(Y0404002040111)
中科院炭材料重点实验室开放基金项目(KFJJ0502)
关键词
炭/炭复合材料
炭纳米纤维
力学性能
Carbon/Carbon composite
carbon nanofibors
mechanical properties
