The relationship between dielectric properties and nanoparticle dispersion of nano-SILICA/Epoxy composites

The effect of nano-fillers on dielectric properties of Epoxy has been studied for years. However, with the same nano-particles component, there are some conflicting reports regarding the effect of nano-particles on the dielectric properties of composites. The different processing will result in different dispersion of nano-particles and different dielectric properties of composites as a result of the agglomerate and distribution of nano-particle. Here we investigate the relationship between dielectric properties and nano-particle dispersions of nano-Silica/Epoxy composites. The dielectric properties including permittivity, corona-resistance, breakdown strength and dispersion are quantitative analyzed by Image J and mathematical method. Some rules are discovered between dielectric properties and nano-particle dispersion.