| abstract |
The object of the present invention is to provide an epoxy resin composition and a cured product therefrom having excellent toughness, high flexural modulus, and high flexural strength, without deteriorating heat resistance. The present invention relates to an epoxy resin composition containing a polyol (A) having a hydroxyl value of 130 to 600 mgKOH/g, an epoxy resin (B), an amine curing agent (C), and a toughener (D), wherein the epoxy resin composition satisfies the following numerical formulas (1) and (2) when a total amount of the polyol (A), the epoxy resin (B), the amine curing agent (C), and the toughener (D) is 100 % by weight; wherein in the following numerical formulas, Wp represents % by weight of the polyol (A), and Wt represents % by weight of the toughener (D).0.1≦Wt2/Wp≦8.00.1≦Wp≦8.0 |