| 摘要 |
<p>PURPOSE:The titled composition, obtained by incorporating a liquid epoxy resin with a specific curing agent, spherical silica having the treated surface and curing accelerator in a specific proportion, having good molding operability and capable of giving cured articles having improved moisture resistance and heat-resistant impact resistance. CONSTITUTION:A liquid epoxy resin composition consisting of (A) 100pts.wt. liquid epoxy resin, preferably having 120-300 epoxy equivalent and 250-700 molecular weight, (B) 30-150pts.wt. preferably 50-100pts.wt. at least one curing agent selected from acid anhydrides and phenolic novolak resin, preferably methylhexahydrophthalic acid anhydride and the phenolic novolak resin preferably having 100-110 hydroxyl group equivalent, (C) 20-70vol%, based on the total composition, spherical silica having the surface treated with an alkoxysilane, preferably phenyltriethoxysilane and (D) 0.01-10pts.wt., preferably 0.1-5pts.wt. curing accelerator, preferably triphenylphosphine.</p> |
