Issue 38, 2019

Graphene foam-embedded epoxy composites with significant thermal conductivity enhancement

Abstract

High thermal conductivity polymer composites at low filler loading are of considerable interest because of their wide range of applications. The construction of three-dimensional (3D) interconnected networks can offer a high-efficiency increase for the thermal conductivity of polymer composites. In this work, a facile and scalable method to prepare graphene foam (GF) via sacrificial commercial polyurethane (PU) sponge templates was developed. Highly thermally conductive composites were then prepared by impregnating epoxy resin into the GF structure. An ultrahigh thermal conductivity of 8.04 W m−1 K−1 was obtained at a low graphene loading of 6.8 wt%, which corresponds to a thermal conductivity enhancement of about 4473% compared to neat epoxy. This strategy provides a facile, low-cost and scalable method to construct a 3D filler network for high-performance composites with potential to be used in advanced electronic packaging.

Graphical abstract: Graphene foam-embedded epoxy composites with significant thermal conductivity enhancement

Supplementary files

Article information

Article type
Paper
Submitted
09 may 2019
Accepted
16 iyn 2019
First published
17 iyn 2019

Nanoscale, 2019,11, 17600-17606

Graphene foam-embedded epoxy composites with significant thermal conductivity enhancement

Z. Liu, Y. Chen, Y. Li, W. Dai, Q. Yan, F. E. Alam, S. Du, Z. Wang, K. Nishimura, N. Jiang, C. Lin and J. Yu, Nanoscale, 2019, 11, 17600 DOI: 10.1039/C9NR03968F

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