Short Interval Measurement of Transit Space Charge Distribution and Electrical Breakdown in Polymer Film in High Temperature Region

摘要

Investigation of space charge distribution up to electrical breakdown is important for understanding electrical breakdown phenomena of polymeric insulating materials. Using the short interval pulsed electroacoustic method, a space charge distribution was measured on a 100μm thick low-density polyethylene (LDPE) film in high temperature region. In this paper, we report the change of the space charge distribution it thinks to influence the electrical breakdown phenomena at 90℃ in LDPE film was measured.