Charge injection and polarization in ethylene-propylene copolymer (EPDM) probed with the thermal pulse technique

摘要

The authors report measurements of injected charge and polarization in ethylene-propylene copolymer (EPDM) with and without alumina filter using the thermal pulse method, following the application of high voltage. It is found that homocharge injection occurs from both electrodes with more positive homocharge than negative homocharge. Dipolar-like polarization was induced by the applied voltage in specimens containing filler.