Currently, among technological advancements, conventional materials such as metals and alloys are being replaced by polymers in such fields as biological muscles, automobiles, aerospace, storage devices, and electronics due to tremendous advances in polymer materials. Dielectric permittivity is one of the key factors for increasing the capability of smart material devices based on dielectric materials such as sensors, actuators, energy conversions, and energy storages. To improve the performance of a polymer, a variety of methods is available in order to increase the dielectric constant and conductivity of polymer materials. The incorporation of inorganic fillers such as metals, metal oxides, carbon black, and ceramics is a well-established approach to improve the thermal, electrical, and mechanical properties of a pure polymer matrix. In fact, dielectric improvements can also be achieved with conductive fillers; increment of the dielectric constant is interesting due to a part of free charges’ contribution and interfacial polarization. The conductive fillers based on carbon families such as carbon black (CB), carbon nanotubes (CNTs), and graphene nanosheets (GRN) are a group of selected fillers, which were used to enhance the dielectric properties of electroactive polymers. This chapter presents the electrical and dielectric properties of tailored PVDF-HFP composites with the incorporation of graphene. This study will reveal and discuss graphene polymer composites based on the significant parameters governing their electrical behavior, including the enhancement of their dielectric properties with the combination of graphene and electron beam irradiation.
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