| 摘要 |
PURPOSE:To obtain the title composition excellent in thermal cycling shock resistance, heat resistance and moisture resistance, by mixing a polyepoxy compound with a novolac phenolic resin, an inorganic filler, a polyether sulfone and a cure accelerator. CONSTITUTION:100 pts.wt. polyfunctional epoxy compound (A) (e.g., novolac epoxy resin) is mixed with a novolac phenolic resin (B) of an unreacted monomer content <=0.5% in such an amount as to give 0.8-1.2 equivalents of OH groups per equivalent of the epoxy groups of component A, 50-80wt.% inorganic filler (C) (e.g., CaCO3), 0.1-15wt.% polyether sulfone (D) of a mean particle diameter of 1-100mum, 0.1-5 pts.wt. cure accelerator (E) (e.g., 2- methylimidazole) and, optionally, a colorant, a mold release, flame retardant, a coupling agent, etc., (F). |
