ELECTRICAL INSULATION PROPERTY IMPROVER AND RESIN COMPOSITION IMPROVED IN ELECTRICAL INSULATION PROPERTY

摘要

PROBLEM TO BE SOLVED: To provide a silicate-based electrical insulation properties improver having an electrical insulation properties improving action more excellent than that of a calcined clay. SOLUTION: The electrical insulation properties improver has a silicic acid content (in terms of SiO2) of 90% by weight or more, and comprises silicate particles with a chemical constitution ratio expressed by formula (1):SiO2-nAl2O3(wherein, n is a number of 0.001-0.01). COPYRIGHT: (C)2004,JPO&NCIPI