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Polymer nanocomposites, in which nanometer-sized inorganic fillers are dispersed homogeneously, have a dynamic area of research and development with the capability of shaping the future of industry. The superior insulating properties of this advanced material may lead to provide downsizing, longer operation time, and environmental harmony for power apparatuses. Since previous IEEJ Technical Report (No. 1051) was published, subsequent research for practical application has been actively conducted in the U.S., Europe and Asia. Reflecting such situation, the present report encompasses the latest progress in the investigation of fundamental properties and fabrication techniques and in the technology of polymer nanocomposite dielectrics applied to insulation for power apparatuses and cables. As regards basic research, several dielectric properties of polymer nanocomposites and their underlying mechanisms are comprehensively reviewed. Some models and investigations of resin/nanofiller interfacial phenomena, which play an important role in the dielectric properties, are also interpreted. Material properties are evaluated for application to power apparatuses such as substation equipment, high-voltage dc cables, magnet wires, circuit devices such as capacitors, and the like. Recent progress in power apparatuses using nanocomposites is described together with newly launched products. This report will effectively provide a wide range of information from tutorial overviews to analysis and synthesis engineering of detailed data to researchers and engineers interested in not only nanocomposites but also innovative insulating materials. |
