Electrical insulating material

Details Electrical insulating material Electrical insulating material

H - Electricity

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H01G 4/22 (2006.01) C08J 9/00 (2006.01) C08J 9/26 (2006.01) C08J 9/28 (2006.01) H01B 3/42 (2006.01) H01B 3/44 (2006.01)

Patent

CA 1037670

ABSTRACT OF THE DISCLOSURE Electrically insulating materials are provided comprising an insulating oil impregnated film of porous macro-molecular material which has an inter-filmplane orientation structure, a major part of the porous material consisting of a crystalline, synthetic macro-molecular material, said porous material having a pore volume of 5 to 50%, and a mean pore diameter of 0.01 to 1 micron, the volume of pores having a pore diameter of 10 microns or less being 90% of the volume of all the pores. It has been found that an extremely high break-down strength is attainable with the electrically insulating materials of the present invention, giving them very wide applicability in insulation technology.

183056

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