| 摘要 |
PROBLEM TO BE SOLVED: To reduce the generation of the powder of resin, when a prepreg is cut, etc. SOLUTION: This method for producing a prepreg comprises impregnating a glass fiber substrate with (A) an epoxy resin varnish containing a two functional group-terminated linear epoxy resin having an epoxy equivalent of <=1500 in an amount of 50-100wt.% based on the epoxy resin and subsequently with (B) an epoxy resin varnish containing a two functional group-terminated linear epoxy resin having an epoxy equivalent of 1500-4000 in an amount of 40-100wt.% based on the epoxy resin. |
