Graphene nanoplatelet (GNP)�epoxy composites were fabricated for the investigation of the dielectric permittivity and microwave absorption in a frequency range from 8 to 20 GHz. The intrinsically conductive GNP particles and polarized interfacial centers in the composites contribute to the enhancement of microwave absorption. A minimum reflection loss of -14.5 dB at 18.9 GHz is observed for the GNP�epoxy composites with 15 wt. % GNP loading, which is mainly attributed to the enhancement of electric conductivity and the charge multipoles at the polarized interfaces in the GNP�epoxy composites.

Graphene nanoplatelet-epoxy composites for enhanced microwave absorption

247th National Meeting (2014)

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