中国塑料 ›› 2008, Vol. 22 ›› Issue (07): 27-31 .DOI: 10.19491/j.issn.1001-9278.2008.07.005

• 材料与性能 • 上一篇    下一篇

碳纤维分布状态对PE-HD/EVA/CF复合材料导电性能的影响

许国志,岑菌,叶小军,李洁涛   

  1. 北京工商大学材料科学与工程系,北京l00037
  • 收稿日期:2008-04-02 修回日期:1900-01-01 出版日期:2008-07-26 发布日期:2008-07-26

Effect of CF Distribution on Conductivity of PE-HD/EVA/CF Blends

XU Guo-zhi,CEN Yin,YE Xiao-jun,LI Jie-tao   

  1. Department of Materials Science and Engineering, Beijing Technology and Business University, Beijing 100037, China
  • Received:2008-04-02 Revised:1900-01-01 Online:2008-07-26 Published:2008-07-26
  • Contact: XU Guo-zhi

摘要: 采用硅烷偶联剂KH560对碳纤维(CF)进行了处理,并探讨了CF含量对PE-HD/CF以及PE-HD/EVA/CF复合材料导电性能的影响。结果表明,随着CF含量的增加,PE-HD/CF体系的体积电阻率从6.16x10^14Ω*cm下降到1.54x10^7Ω*cm,表面电阻率2.59x10^16Ω,下降到5.74x10^9Ω;而PE-HD/EVA/CF复合体系中体积电阻率从1.91x10^13Ω*cm下降到3.27xlO^15Ω*cm,表面电阻率从5.72x10^15Ω,下降到6.18x1O^8Ω表明加人EVA有利于提高复合体系的导电性能。当CF含量为5份时,复合材料的体积电阻率达到最小值。研究还表明,随着CF含量的增加,CF沿着外力方向出现很明显的取向,沿着CF取向方向材料的体积电阻率和表面电阻率均有所下降。

关键词: 高密度聚乙烯, 乙烯一酷酸乙烯共聚物, 碳纤维, 取向, 导电性能, 导电聚合物

Abstract: The effect of carbon fiber contents on the conductivity of PE-HD based blends was studied.For the system of PE-HD/CF, the volume and surface resistivitics decreased from 6.16x10^14Ω*cm to 1.54x10^7Ω*cm and from 2.59x10^16Ωto5.74x10^9Ω, respectively. For the system of PE-HD/EVA/CF those values decreased from 1.91x10^13Ω*cm to 3.27xlO^15Ω*cm, and from 5.72x10^15Ω to 6.18x1O^8Ω, respectively. It showed that the addition of EVA could improve the conductivity of the composites. When the loading of CF was 5 phr, the volume resistivity exhibited a minimum. The degrey of orientation of CF increased with increasing its content, the volume and surface resistivitics alongthe machine direction decreased more obviously.

Key words: high density polyethylene;ethylene-vinyl acetate copolymer, carbon fiber;orientation;conductivity;conductive polymer