| 摘要 |
PROBLEM TO BE SOLVED: To obtain a mica tape with its insulation layer being free from voids by coating and impregnating laminated mica foils with a composition containing an epoxy resin and an organometallic salt, coating a backing material with a composition containing a normally liquid epoxy resin and a plurality of specified curing agents, and laminating the laminated mica foils with the backing material. SOLUTION: Laminated mica foils are coated and impregnated with a composition containing an epoxy resin and an organometallic salt (e.g. zinc octoate). Separately, a backing material is coated at ordinary temperature with a composition containing a normally liquid epoxy resin, a first curing agent being a normally curing liquid amine type curing agent (e.g. hydrogenated diaminodiphenylmethane), and a second curing agent being a microencapsulated highly reactive curing agent or the microencapsulated curing agent (e.g. imidazole) and/or one obtained by pulverizing a normally solid latent curing agent. The laminated mica foils are laminated with the backing material. |
