EPOXY RESIN COMPOSITION FOR IMPREGNATION AND FILM CAPACITOR PREPARED BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a compsn. which gives a cured item having a long pot life, good impregnation properties, and a good balance among heat resistance, moisture resistance, and electrical insulating properties by compounding a liq. alicyclic epoxy resin, a low-viscosity cycloalkylene glycol diglycidyl ether, a liq. polycarboxylic anhydride curative, and a cure accelerator contg. an diazabicycloundecence compd. ;SOLUTION: 100 pts.wt. liq. alicyclic epoxy resin is compounded with 10-40 pts.wt. low-viscosity cycloalkylene glycol diglycidyl ether, 110-160 pts.wt. liq. polycarboxylic anhydride curative, and 3-7 pts.wt. cure accelerator contg. at least 50wt.% diazabicycloundecene compd. For example, the epoxy resin is liq. at 10-35°C, and the diglycidyl ether has a viscosity of 100cP or lower at 25°C. Pref. the curative is methyltetrahydrophthalic anhydride.;COPYRIGHT: (C)1998,JPO