In order to reduce the content of conductive filler and improve the smoothness of semiconductive shielding layer of power cable, Graphene was used as a better kind of conductive filler to replace a part of carbon black (CB). In the meantime, in order to improve the consistency between the graphene and ethylene-vinyl acetate copolymer (EVA), γ-methacryloxypropyl trimethoxy silane (KH570) was used to modify the graphene. The result shows that modified reduced graphene oxide (MrGO) has a better compatibility and dispersability with EVA matrix. A qualified composite can be obtained only by adding 6% of MrGO and 10% of CB, compared with traditional semiconductive shielding material, the conductive filler content of which has been reduced greatly. In addition, this kind of new material has a good mechanical, electrical, thermal properties.
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