摘要
以气相生长炭纤维含浸酚醛树脂后经炭化及石墨化处理 ,制成炭 炭复合材料。观察了不同纤维百分含量的复合材料在升温过程的微细结构及物性之变化 ,探讨了其强度及电性的变化 ,并以扫瞄式电子显微镜 (SEM )观察破断表面 ,观察各种复合材料经不同温度处理后之破坏行为。研究结果显示 ,以气相生长炭纤维所制复材经温度处理后 ,可以改善其抗弯强度及导电性 ,最佳纤维含量质量分数为 0 .5 %。超过此比率后 。
Carbon/carbon composites were prepared from vapor-grown carbon fiber (VGCF) and resol-type phenol-formaldehyde resin. The composites were heat-treated at 230 degreesC, 400 degreesC, 800 degreesC, 600 degreesC, 1000 degreesC, 1800 degreesC and 2 500 degreesC. The effect of pyrolysis on the microstructure, flexural strength, and electrical properties of the composites during the heat-treatment was studied. The flexural strength and conductivity of the composite reinforced with 0.5 w/% of VGCF were better than those of other samples.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
2002年第3期1-5,共5页
New Carbon Materials
基金
国科会NSC 89 2 2 16 E0 3 5 0 2 5~~
