Measurement of Effect of Ultrasonic Mixing on the Properties of Polyurethane Potting Compounds Doped With ZnO Nanoparticles

The main goal of an experimental measurement was to determine how ZnO nanoparticles added to polyurethane affected the composite's properties. According to the results of the experiment, the samples to which the ultrasonic needle was applied had visibly different dielectric properties. The frequency dependence of relative permittivity and dissipation factor was investigated in this study. A decrease of real permittivity and a shift of local relaxation peaks of dissipation factor with addition of ZnO was observed due to a lower mobility of polymer chains connected to nanoparticles. Polyurethane's glass transition temperature has shifted because of nanoparticle addition, according to DMA measurements.