Dielectric properties of graphene nanoplatelets filled LDPE

Paper i proceeding, 2016

This work presents studies on electrical properties of nanocomposites of low density polyethylene (LDPE) filled with graphene nanoplatelets (GnP) of different content. As compared to pure LDPE, significant reductions of the conductivity are found for the composites at relatively low electric fields (below 20 kV/mm). A crossover effect is however seen at higher fields (above 20 kV/mm), where a strong field dependent non-linear behavior dominates, yielding higher conduction currents that increase with increasing filler content. Results of investigations of dielectric response confirm the differences found in polarization currents during the measurements of dc conductivity.