Abstract
Heat conducting gel sheets were fabricated with graphene nano-particles (GNPs) filler which was prepared by ball-milling method. The thermal conductivity of GNPs gel sheets (GNPs-GS) with 10 wt.% reaching 0.38 W/(m⋅K) at [Formula: see text] increased by 90% compared with the pure gel sheets (Pure-GS). The conduction of heat-sink device which was made of GNPs-GS with 10 wt.% is much faster than the one which was made of Pure-GS. FE-SEM images show that the GNPs are layered and uniformly distributed in the matrix, which demonstrated the actual exfoliation of GNPs in the process of ball-milling. This handy and cost-efficient method of ball-milling to exfoliate GNPs and further for fabricating heat conducting gel sheets is a feasible program in industrial production.
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