华南理工大学学报(自然科学版) ›› 2003, Vol. 31 ›› Issue (9): 62-65.

• 材料科学与工程 • 上一篇    下一篇

碳纤维增强 TLCP 复合材料的结构与性能

宁 平1 胡 健2 易 岚3 夏 林1   

  1. 1.华南理工大学 材料科学与工程学院‚广东 广州5106402.华南理工大学 制浆造纸工程国家重点实验室‚广东 广州510640;3.广州市公安消防局‚广东 广州510660
  • 出版日期:2003-09-20 发布日期:2022-05-20
  • 作者简介:宁平(1953-)‚男‚副教授‚主要从事高分子 材料改性及复合材料的研究

Structure and Properties of Carbon Fibre-Reinforced TLCP Composites

Ning Ping 1 Hu Jian 2 Yi Lan 3 Xia Lin 1    

  1. 1.College of Material Science &Engineering‚South China Univ.of Tech.‚Guangzhou510640‚China; 2.State Key Laboratory of Pulp and Paper Engineering‚South China Univ.of Tech.‚Guangzhou510640‚China; 3.Bureau of Guangzhou Public Security &Fire‚Guangzhou510660‚China
  • Online:2003-09-20 Published:2022-05-20

摘要: 用不同类型的碳纤维(CF)增强热致性液晶聚合物(TLCP)制备了高性能复合材 料;探讨了纤维含量、纤维类型对复合材料力学性能和微观结构的影响.实验结果表明‚ CF(连续纤维)/TLCP 复合材料的拉伸强度最大可达385MPa‚比纯液晶材料提高60%; 弯曲强度最大为242MPa‚冲击强度达到29912J·m -2‚布氏硬度为20‚热变形温度高达 203℃.CF/TLCP 复合材料的力学性能受纤维类型的影响‚连续碳纤维布增强的复合材料 各项力学性能指标高于短切碳纤维增强复合材料.扫描电镜结果证实了液晶聚合物在加 工过程中沿纤维方向发生自取向‚形成了微纤结构‚具有自增强作用.

关键词: 热致性液晶聚合物, 纤维增强复合材料, 碳纤维

Abstract: The preparation of carbon fibre-reinforced thermotropic liquid crystallic polymer(TLCP) composites has been reported.Influence of fibre content‚fibre style on the mechanical properties and microstructure of the composites are discussed.The experiments show that the tensile strength of CF(continuous fibre)/TLCP composites reached385 MPa‚the flexural strength was about242MPa‚the impact strength got to29912J·m -2‚the Brinell hardness went as high as20‚and the heat distortion temperature was more than203℃.The results demonstrate that the machanical properties of the composites are influenced by fibres style‚and the machanical properties of CF(continuous fibre)/TLCP composites are higher than that of CF(chopped fibre)/TLCP compo-sites.The SEM photographs show that TLCP molecules orientated along the direction of fibre and formed micro fibre structure during the fabrication‚and the properties of the composites increased obviously.

Key words: thermotropic liquid crystallic polymer, fibre-reinforced composites, carbon fibre

中图分类号: