Comparison of Insulation Breakdown Properties of Epoxy Nanocomposites under Homogeneous and Divergent Electric Fields

• Published in: 2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena pp. 306 - 309
• Main Authors: Imai, T., Sawa, F., Ozaki, T., Inoue, Y., Shimizu, T., Tanaka, T.
• Format: Conference Proceeding
• Language: English; Japanese
• Published: IEEE 01.10.2006
• Subjects: Curing; Dielectrics and electrical insulation; Electric breakdown; Electric variables measurement; Electrodes; Epoxy resins; Gas insulation; Nanocomposites; Silicon compounds; Sulfur hexafluoride
• ISBN: 1424405467; 9781424405466
• ISSN: 0084-9162
• DOI: 10.1109/CEIDP.2006.311930

This paper focuses on the insulation properties of nanocomposites, which are evaluated under divergent and homogeneous electric fields. Epoxy nanocomposites were made by dispersing nano-fillers. Various kinds of nano-fillers were used, such as layered silicate, silica and titania. Insulation breakdown tests by needle-plate and plate-plate electrode configuration were conducted on the nanocomposites. The insulation properties of nanocomposites are superior to those of the base epoxy resin under a divergent electrical field. In particular, the nanocomposite containing TiO 2 nano-fillers shows unique properties. However, there was no significant difference between the base epoxy resin and the nanocomposites under homogeneous electric fields.