【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6.16×10¹⁴Ω·cm 下降到1.54×10⁷Ω·cm,表面电阻率从2.59×10¹⁶Ω下降到5.74×10⁹Ω;而 PE-HD/EVA/CF 复合体系中体积电阻率从1.91×10¹³Ω·cm 下降到3.27×10⁸Ω·cm,表面电阻率从5.72×10¹⁵Ω下降到6.18×10⁸Ω,表明加入 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。更多还原

【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 resistivities decreased from 6.16×10¹⁴Ω·cm to 1.54×10⁷Ω·cm and from 2.59×10¹⁶Ω to 5.74×10⁹Ω,respectively.For the system of PE-HD/ EVA/CF those values decreased from 1.91×10¹³Ω·cm to 3.27×10⁸Ω·cm,and from 5.72×10¹⁵Ω to 6.18×10⁸Ω,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 de- gree of orientation of CF increased with increasing its content,the volume and surface resistivities along the machine direction decreased more obviously.更多还原