Prepreg comprising structural fiber and matrix resin formulated from epoxys selected from the group consisting of polyglycidyl ethers of polycyclic bridged hydroxy-substituted polyaromatic compounds and N,N,N',N'-tetraglycidyl-bis(4-amino-3-ethylphenyl) methane with from about 6 to about 150 pbw, per hundred parts by weight of the epoxy resin components, of a solid aromatic diamine hardener insoluble in said composition in an amount effective to cure said epoxy resin exhibiting improved storage stability characteristics at room temperature.
预浸料,由结构纤维和基体
树脂配制而成,环氧
树脂选自多环桥接羟基取代的多芳香族化合物的聚
缩水甘油醚和 N,N,N',N'-四raglycidyl-bis(4-amino-3-ethylphenyl)methane、以每百份环氧
树脂组分重量计,加入不溶于所述组合物的固体芳香族二胺固化剂,其有效用量可固化所述环氧
树脂,使其在室温下具有更好的储存稳定性。