EPOXY RESIN COMPOSITION, PREPREG, AND ROLL MADE OF RESIN REINFORCED WITH REINFORCING FIBERS

摘要

An epoxy resin composition giving a cured resin plate which, after 60 hour standing at 150 DEG C and at the saturated vapor pressure, has a water absorption of 3.5 % by weight or lower; a prepreg which comprises the epoxy resin composition and reinforcing fibers; and a fiber-reinforced resin roll which is 1) a laminate comprising fiber-reinforced resin layers each comprising reinforcing fibers and a matrix resin, wherein the matrix resin is a resin composition giving a cured resin plate which, after 60 hour standing at 150 DEG C and at the saturated vapor pressure, has a water absorption of 3.5 % by weight or lower; or 2) a laminate comprising (i) at least one fiber-reinforced resin layer comprising long reinforcing fibers having an elastic modulus of 600 SIMILAR 800 Gpa and a resin composition and (ii) at least one fiber-reinforced resin layer comprising long reinforcing fibers having an elastic modulus of 140 SIMILAR 300 Gpa and a resin composition.