Epoxy resin composition and cured product thereof.

摘要

An epoxy resin composition comprising (a) a low-viscosity epoxy resin having a viscosity of not more than 100 poise at 25 DEG C which contains a tri- or tetrafunctional liquid aromatic epoxy resin, (b) a liquid curing agent selected from the group consisting of an imidazole compound, the combination of a liquid alicyclic acid anhydride and an imidazole compound, the combination of a liquid alicyclic amine and an imidazole compound, (c) a metal powder having an average particle size of not more than 125 mu m or an inorganic powder consisted of 50 parts or more by weight of a metal powder having an average particle size of not more than 125 mu m and less than 50 parts by weight of an inorganic filler other than a metal powder, whose average particle size is smaller than that of the metal powder, based on the total amount of the metal powder and the inorganic filler. The composition has satisfactory fluidity and provides a cured product having high strength, a small thermal expansion coefficient, excellent heat-resistance and satisfactory surface characteristics. The composition is useful for the production of a resin mold, etc.