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碳纤维上原位生长碳纳米管对C/C复合材料弯曲性能的影响
  • ISSN号：1000-3851
  • 期刊名称：《复合材料学报》
  • 时间：0
  • 分类：TB332[一般工业技术—材料科学与工程]
  • 作者机构：[1]西北工业大学材料科学与工程学院,凝固技术国家重点实验室,西安710072
  • 相关基金：基金项目：国家自然科学基金（50832004）;西北工业大学凝固技术国家重点实验室科研基金（25-TZ-2009）
作者： 文诗琦, 李克智[1], 宋强[1]
关键词： 碳纳米管, 碳, 碳复合材料, 原位生长, 弯曲性能, 微观结构, carbon nanotube, carbon/carbon composite, in-situ growth, flexural property, microstructure
中文摘要：

以碳毡为基底原位生长了碳纳米管（CNTs），借助化学气相渗透制备了CNTs-C/C复合材料。研究了催化剂含量对碳纳米管生长的影响以及不同含量碳纳米管对C/C复合材料弯曲性能的影响。结果表明：催化剂对CNTs产量影响较大，且含量越多，生成的CNTs量越大；原位生长CNTs引入的催化剂会导致CNTs-C/C复合材料弯曲性能变差；CNTs的加入改变了热解碳的沉积行为，诱导了球状和锥状小尺寸热解碳的形成，减少了微裂纹的出现。适量CNTs能提高C/C复合材料的弯曲强度和模量，并改善材料的断裂行为。

英文摘要：

The carbon nanotubes （CNTs） were in-situ grown on carbon fiber felts and the hybrid felts were densified by chemical vapor infiltration （CVI） to prepare CNTs-C/C composites.The effects of catalyst content on the growth of CNTs and the effects of CNT content on the flexural properties of CNTs-C/C composites were investigated. The results show that catalyst content has a great influence on the yield of CNTs. More CNTs were obtained with the catalyst content increasing. The catalysts used for CNT growing deteriorate the flexural properties of C/C composites. The CNTs changes the infiltration behaviors of pyrocarbons and induces the formation of abundant small-sized spherical or cone-shaped pyrocarbons, which inhibits the formation of annular cracks in pyrocarbon matrix. The CNTs with a suitable content can increase the flexural strength and modulus and improve the fracture behavior of C/C composites.

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C/C复合材料疲劳特性及强韧化机理研究
期刊论文 79 会议论文 11 专利 2
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期刊信息
  • 《复合材料学报》
  • 中国科技核心期刊
  • 主管单位:工业和信息化部
  • 主办单位:北京航空航天大学 中国复合材料学会
  • 主编：益小苏
  • 地址：北京海淀区学院路37号
  • 邮编：100083
  • 邮箱：
  • 电话：010-82316907
  • 国际标准刊号：ISSN：1000-3851
  • 国内统一刊号：ISSN：11-1801/TB
  • 邮发代号:80-413
  • 获奖情况:
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  • 被引量:17731