| 摘要 |
PURPOSE:To obtain an electrical laminate of improved cracking resistance by impregnating bases with a silicone rubber-filled resin varnish and laminate- molding the impregnated bases. CONSTITUTION:A silicone rubber-filled resin varnish (B) is obtained by mixing a thermosetting resin varnish (a) (e.g., epoxy resin varnish) with 3-50wt.%, based on the resin content of component (a), liquid silicone rubber (b). A plurality of resin impregnated bases (A) obtained by impregnating bases (e.g., woven glass cloth) and drying them are laid upon each other, a metal foil is optionally to at least either of the outer surfaces, and the assemblage is laminate-molded under applied heat and pressure. |
