Preparation and dielectric properties of Al-flake/PVDF composites

Al-flake/poly(vinylidene)fluoride(PVDF) composite was prepared by ball-milling process with ethanol, which used PVDF and Al as matrix and filler, respectively. The dielectric properties of the Al-flake/PVDF composites with different volume fractions of Al were studied, the surface morphologies of the samples were examined by SEM and the elements of the samples were analysed by EDS. The results show that the addition of Al-flake not only can increase the dielectric constant, but also has a low loss tangent and high breakdown field strength, which demonstrate that Al-flake/PVDF composites can be used in the electronic industry.