RESIN COMPOSITION FOR ELECTRIC INSULATION, CURED PRODUCT THEREOF, METHODS FOR MANUFACTURING SAME, AND HIGH-VOLTAGE DEVICES AND ELECTRIC POWER TRANSMISSION AND DISTRIBUTION DEVICES USING SAME

摘要

The present invention is aimed at enhancing dispersibility of filler, maintaining uniform low-thermal-expansion properties and mechanical strength, enhancing insulation characteristics, especially treeing resistivity, of a resin composition or a cured resin product, and enhancing the reliability of a high voltage apparatus, a power transmission and distribution apparatus or the like to which the resin composition or the cured resin product is applied. An insulating resin composition contains an insulating resin 1 as a matrix, a large particle diameter filler 2, and a small particle diameter filler 3 smaller in particle diameter than the large particle diameter filler 2, the large particle diameter filler 2 and the small particle diameter filler 3 being dispersed in the insulating resin 1, wherein the insulating resin 1 and the large particle diameter filler 2 has an affinity for each other, whereas the insulating resin 1 and the small particle diameter filler 3 have no affinity for each other.