Graphene Fluoride Assembled Polyurethane Foam In Epoxy Composites to Achieve High Thermal Conductivity and Electrical Insulation
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Effective heat dissipation from electronic devices has become one of the most pressing issues. Herein, we developed the thermally conducting yet electrically insulating graphene fluoride (GF) based epoxy composites. A cyclic assembly deposition approach was used to coat GF on the cell walls of polyurethane foam (PUF), followed by the PUF@GF foam was compressed immersed in epoxy resin. Notably, with 8.04 vol% GF loading, the fabricated 3D GF epoxy composites had a thermal conductivity of 9.68 W/mK, corresponding to the thermal conductivity enhancement of 4994% in comparison to that of the neat epoxy. This approach demonstrates a cost-effective method for fabricating thermoconductive composites with electrical insulation that could be used in electronic applications for heat dissipation. The research was supported by a grant from the Academic Research Program of Korea National University of Transportation in 2022. Composites Part A 149 106585 (2021).