Preparation of graphene/aligned carbon nanotube array composite films for thermal packaging applications
Journal article, 2019

Vertically aligned carbon nanotube arrays (VACNTs) have been successfully achieved by CVD. The carbon nanotubes were almost triple-walled. Furthermore, the graphene/VACNT composite films have been prepared as thermal interface materials, using photolithographic and densification processes. Compared with pure epoxy resin, the longitudinal thermal conductivity of the composite films was obviously improved, which confirmed that VACNTs provided additional longitudinal heat transfer channels in the films. Furthermore, their longitudinal thermal conductivity was largely dependent on the distribution of VACNTs. The transversal thermal conductivity of the composite film with a pattern size of 300 mu m was about seven times higher than that of pure epoxy resin. This indicated that graphene provided additional horizontal heat transfer channels to achieve the enhancement of transversal thermal conductivity in composite films. (C) 2019 The Japan Society of Applied Physics

Author

Bo Shan

Shanghai University

Guangjie Yuan

Shanghai University

Haohao Li

Shanghai University

Johan Liu

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Shanghai University

Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

0021-4922 (ISSN)

Vol. 58 SHHH01

Subject Categories

Ceramics

Textile, Rubber and Polymeric Materials

Composite Science and Engineering

DOI

10.7567/1347-4065/ab1bd0

More information

Latest update

10/24/2019