ELECTRICAL INSULATION PAPER AND STATIONARY INDUCTION ELECTRIC DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an electrical insulation paper having mechanical characteristics, electric insulation characteristics and impregnation property of an insulation oil the same as those of the conventional electrical insulation paper and having more excellent durability and heat resistance than those of the conventional one by a simple process.SOLUTION: The electrical insulation paper is used in a state that it is impregnated in an electrical insulation oil and has a paper substrate composed mainly of cellulose, an adsorption layer adsorbed and formed on the whole surface of the paper substrate and a moisture barrier layer formed by chemically bonding to the adsorption layer. The moisture barrier layer includes an amphipathic molecule having in one molecule both a hydrophobic hydrocarbon group and a hydrophilic functional group. The amphipathic molecule is chemically bonded to the adsorption layer through the hydrophilic functional group and the hydrophobic hydrocarbon group covers the surface of the paper substrate.