高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (6): 1002.

• 研究论文 • 上一篇    下一篇

以甲苯为前驱体化学液气相沉积法制备碳/碳复合材料

王兰英, 李贺军, 卢锦花, 白瑞成, 郭领军, 张秀莲   

  1. 西北工业大学碳/碳复合材料工程技术研究中心, 西安710072
  • 收稿日期:2004-10-19 出版日期:2005-06-10 发布日期:2005-06-10
  • 通讯作者: 李贺军(1957年出生),男,教授,博士生导师,主要从事碳碳复合材料制备、性能、仿真、模拟、抗氧化以及碳基生物医用复合材料研究.E-mail:lihejun@nwpu.edu.cn E-mail:lihejun@nwpu.edu.cn
  • 基金资助:

    国家自然科学杰出青年基金(批准号:50225210)资助.

Fabrication of Carbon/Carbon Composites by Chemical Liquid-vaporizedDeposition with Toluene as Precursors

WANG Lan-Ying, LI He-Jun, LU Jin-Hua, BAI Rui-Cheng, GUO Ling-Jun, ZHANG Xiu-Lian   

  1. Carbon-Carbon Composites Material Engineering and Technology Research Center, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2004-10-19 Online:2005-06-10 Published:2005-06-10

摘要: 以甲苯为前驱体利用化学液气相沉积法,采用碳布叠层作预制体,于950℃下沉积9h制备了密度为1.63g/cm3的碳/碳复合材料.用金相显微镜、扫描电子显微镜(SEM)和X射线粉末衍射(XRD)等手段对所得的材料进行了组织结构分析,并测定了其力学性能.实验结果表明,以甲苯为前驱体利用该方法可以制备组织结构比较均匀的碳/碳复合材料.用GC/MS气相色谱质谱联用仪对甲苯热分解产物(不挥发成分)进行了成分分析,提出了甲苯裂解制备碳/碳复合材料的初期热裂解机理和热缩聚机理.

关键词: 碳/碳复合材料, 化学液气相沉积法, 甲苯, 裂解机理

Abstract: Carbon-carbon composites with a density of 1.63 g/cm3 were prepared by chemical liquid vaporized deposition with toluene as the precursors and stratum carbon-cloth as the preform at 950 ℃ in 9 hours. Its microstructure, X-ray diffraction and mechanical properties were measured. The results indicate that the homogeneous materials can be prepared by chemical liquid vaporized deposition using toluene as the precursors. The ingredient of the recovered toluene was also analyzed with GC/MS. The possible mechanism of initial pyrolysis and polymeric process of toluene was discussed.

Key words: Carbon-carbon composites, Chemical liquid-vaporized deposition, Toluene, Cracking mechanism

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