High thermal conductivity and low electrical conductivity tailored in carbon nanotube (carbon black)/polypropylene (alumina) composites

详细信息    查看全文

• 作者：Ruijie Xu ; Minyi Chen ; Feng Zhang ; Xiaorui Huang ; Xiaogang Luo ; Caihong Lei ; ^{lch528@gdut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Shengguo Lu ; Xiaoqing Zhang
• 关键词：Polymer-matrix composites (PMCs) ; Hybrid composites ; Electrical properties ; Thermal properties
• 刊名：Composites Science and Technology
• 出版年：2016
• 出版时间：14 September 2016
• 年：2016
• 卷：133
• 期：Complete
• 页码：111-118
• 全文大小：2687 K

文摘

In this paper, a stellated carbon filler (S-filler) through passivation of the surfaces of carbon nanotubes and carbon black (CNTs/CB) was fabricated, and the corresponding thermal conductive composites of polypropylene (blended with alumina) (PP/Al₂O₃) incorporated with S-filler were fabricated. When adding 15 wt% S-filler, the composite shows an DC electrical resistivity as high as 8.34 × 10¹¹ Ω cm and high thermal conductivity about 0.68 W/m·k. The composite using the new carbon filler as hybrid part shows a higher thermal conductivity and electric insulation. The rheological test also shows that the percolation network is not formed by the S-filler. This work offers a novel route for the design of thermally conductive, but electrically insulative composites with polymer as a matrix.