Vertical alignment of copper nanowires network and the effect of copper nanowires aspect ratio on the thermal conductivity of epoxy composites
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In this work, the vertical alignment of copper nanowires (CuNWs) network was prepared by the support of cellulose nanofiber via the ice-templating method. Also, the thermal conductivity of epoxy composites was investigated basing on the effect of aspect ratio (A/R) of CuNWs. The thermal conductivity of epoxy composites reached the highest value of 0.79 Wm-1K-1 at 1.12 vol% of CuNWs loading in the case of high A/R, which corresponded to an enhancement of 365% as compared to that of the pure epoxy. To demonstrate the application of epoxy composites in heat dissipation, the change of surface temperature on a hot plate as a function of heating time was recorded by using an infrared camera. This study provides an insight into the fabrication of thermally conductive composites with the potential to be applied in thermal dissipating materials of electronic devices.