Effect of ZnO nanoparticles on the dielectric properties of polyurethane and epoxy resins

This study aims to present the influence of Zinc Oxide (ZnO) filler on dielectric properties two types commercial potting compounds. For this purpose, methods spectroscopy were used measure changes in responses polyurethane and epoxy by 1.0 wt. % ZnO over frequency temperature range, respectively. Two representatives mixtures (VUKOL 022 EPOXYLITE 3750 LV), that are commercially industry for filling cavities all kinds (construction electrical equipment), investigation. The nanoparticles LV caused an increase, VUKOL a decrease real permittivity compared pure matrix. Its was most likely presence highly immobile chains interfacial regions around nanoparticles. shift low relaxation maximum higher frequencies nanocomposite base affected smaller local electric field double layers