PREPREG AND MOLDING PRODUCT THEREOF

To provide prepreg having high thermostability and high mechanical strength, and giving excellent damping properties, and a molded body (fiber reinforced composite) obtained from the prepreg, the prepreg is formed by impregnating a reinforced fiber having an elastic modulus of 100 to 900 GPa with an epoxy resin composition including the following Components A to D so as to have a resin content within a range of 25 to 50 mass%: Component A: an epoxy resin having an oxazolidone ring structure in a molecule thereof; Component B: an epoxy resin that is liquid at 30°C; Component C: a diblock copolymer having a B-M structure, wherein M is a block including at least 50 mass% of methyl methacrylate, B is a block immiscible with the epoxy resins and the block M, a glass transition temperature of the block B being 20°C or lower; and Component D: dicyandiamide, or an amine curing agent that is a derivative of dicyandiamide.