Electrical insulating resin composition for partial-discharge resistance
AssigneesSumitomo Seika Chemicals Co., Ltd., National Institute of Advanced Industrial Science and Technology, Shizuoka Institute of Science and Technology
InventorsNoriyuki Hayashizaka, Kazunori Kawasaki, Masayuki Yamashita, Takeo Ebina, Takahiro Ishida, Satomi Hattori
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Abstract
An object of the present invention is to provide an improved partial discharge-resistant electrical insulating resin composition that can inhibit deterioration of an insulator due to partial discharge. The partial discharge-resistant electrical insulating resin composition of the present invention comprises boehmite alumina and a resin.
Claims13
A partial discharge-resistant electrical insulating resin composition comprising boehmite alumina and a resin, wherein the boehmite alumina is nanoparticles having an average particle diameter of 20-500 nm in an amount of 0.1 to 30 wt %, wherein the resin is a polyimide resin, wherein the boehmite alumina has a shape of plate-like particles and an aspect ratio (length/width) of 2 to 35, and wherein the boehmite alumina is dispersed in the resin by using boehmite alumina dispersed in an organic solvent or water during mixing of the boehmite alumina with the resin.
Dependencies are inferred from the claim text.