Electromagnetic wave-absorbing properties of graphene nanoplatelets-calcium sulfoaluminate cement-based composites

Abstract

In this paper, graphene nanoplatelets [GNPs] in calcium sulfo-aluminate cement-based composites were prepared. The effects of graphene nanoplatelets content and sample thickness on the absorbing properties of composites were studied and the related mechanism was investigated. The experimental results have shown that the sample with a thickness of 25mm exhibited good electromagnetic wave [EMW] absorption, when the content of gra-phene nanoplatelets is 0.06%. The minimum reflectivity is-30.8 dB at 8.7 GHz, and the cumulative bandwidth [