Nanocomposites for Electrical Power Applications - (PPT)

摘要

By reduction of the size of filler particles their specific surface area increases. The interphase forming around filler particles can take a remarkable percentage in nanocomposites. Changed electrical properties in nanocomposites are attributed to the interphase. Different models exist for the description of the interphase. Increased partial discharge (PD) and treeing resistance in nanocomposites are attributed to - Nanoscale segmentation effect; - Permittivity difference effect; - Coupling agent effect; - Nano filler pile-up effect. For nanocomposites an electrical breakdown strength similar or even better than for neat epoxy resin can be achieved (in contrast to microcomposites). Possible applications of epoxy nanocomposites are - Transmission and distribution apparatus; - Generator winding insulation; - Insulation for Power Electronic Devices.