Patent ID: 7846853
Filing Date: 2010-12-07
Classification: H01B,Y10T

Abstract:
1. An electrical insulation system comprising: mica flakelets, wherein said mica flakelets have an average size range of 0.01 to 0.05 mm in their thinnest dimension; hexagonal boron nitride, wherein said hexagonal boron nitride has an average size range of 10 to 100 nm in their longest dimension; and a resin matrix; wherein said electrical insulation system comprises an electrical insulation composite comprising a mixture of said mica flakelets and said hexagonal boron nitride; wherein a ratio by weight of said hexagonal boron nitride to said mica flakelets in said electrical insulation composite is directly proportional to the average size of said hexagonal boron nitride compared to the average size of said mica flakelets, within an adjustment factor of 0.5 to 2; and wherein the ratio by weight of said hexagonal boron nitride to said mica flakelets in said electrical insulation composite is between 1:100 and 1:20 by weight.