Possibilities of modification of polymer/SiO2 composite by various types of carrier

The main aim of this paper is to describe possibilities of modification of polymer insulating materials by various types of carrier. The major problem of currently used insulation system is their inhomogeneous structure. Therefore, there is an efforts to develop material that is macroscopically homogeneous. New composite materials are created using nano-particles silica (~1 wt %) and epoxy type of resin. Polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and fabric with micrometric thicknesses were chosen as carrier for this research. Composites were created by using a mixing method, in which a nano-fillers were applied to the epoxy resin and applied on PET, PEN or glass fabric carrier component. The dissipation factor, volume resistivity, dielectric strength and polarization indexes were measured to determine the electrical insulating properties.