Thermal and Electrical Properties of Hybrid Composites with Graphene and Boron Nitride Fillers
arXiv:1903.01025 · doi:10.1088/2053-1591/ab2215
Abstract
We report on the thermal and electrical properties of hybrid epoxy composites with graphene and boron nitride fillers. The thicknesses, lateral dimensions, and aspect ratios of each filler material were intentionally selected for geometric similarity to one another, in contrast to prior studies that utilized dissimilar filler geometries to achieve a "synergistic" effect. We demonstrate that the electrically-conductive graphene and electrically-insulating boron nitride fillers allow one to effectively engineer the thermal and electrical conductivities of their resulting composites. By varying the constituent fraction of boron nitride to graphene in a composite with ~44% total filler loading, one can tune the thermal conductivity enhancement from a factor of x15 to x35 and increase the electrical conductivity by many orders of magnitude. The obtained results are important for the development of next-generation thermal interface materials with controllable electrical properties necessary for applications requiring either electrical grounding or insulation.
arXiv comment32 pages; 5 figures
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Cited by in corpus (5)
- Thermal Properties of the Binary-Filler Composites with Few-Layer Graphene and Copper Nanoparticles
- Synthesis and Properties of Non-Curing Graphene Thermal Interface Materials
- Graphene Composites as Efficient Electromagnetic Absorbers in the Extremely High Frequency Band
- Unified Modeling and Experimental Realization of Electrical and Thermal Percolation in Polymer Composites
- Effect of graphene and carbon-nitride nanofillers on the thermal transport properties of polymer nanocomposites: A combined molecular dynamics and finite element study