Dielectric and Microwave Properties of Graphene Nanoplatelets /Carbon Black Filled Natural Rubber Composites

Abstract

Natural rubber (NR) based nanocomposites containing a constant amount (50 phr) of standard furnace carbon black and graphene nanoplatelets (GNP) in concentrations from 1 to 5 phr have been prepared. Their dielectric (d ielectric permittiv ity, dielectric loss) and microwave propert ies (coefficients of absorption and reflect ion of the electro magnetic waves and electromagnetic interference shielding effectiveness) have been investigated in the 1-12 GHz frequency range. The results achieved allow us to reco mmend GNP as second filler for natural rubber based composites to afford specific absorbing properties.