Prepreg, fiber-reinforced composite material, tubular body made of fiber-reinforced composite material, golf club shaft, and fishing rod

Abstract

An object of the present invention is to provide a prepreg containing a resin composition which has an excellent elastic modulus and heat resistance, and which also has an excellent appearance including weather resistance and transparency, as well as to provide a fiber-reinforced composite material, a tubular fiber-reinforced composite material, a golf club shaft and a fishing rod, using the prepreg, and having excellent mechanical properties, heat resistance and appearance. As means to achieve the above-mentioned object, the present invention provides a prepreg including reinforcing fibers and a resin composition, wherein the resin composition contains the following component [A] to component [D]: component [A]: a novolac type epoxy resin; component [B]: an oxazolidone type epoxy resin; component [C]: one or both of a sorbitol type epoxy resin and a glycerol type epoxy resin; and component [D]: dicyandiamide; and wherein the resin composition satisfies the following requirement (1) to requirement (5): requirement (1): the content of the component [A] is from 20 to 50 parts by mass, with respect to 100 parts by mass of the total epoxy resin; requirement (2): the content of the component [B] is from 10 to 40 parts by mass, with respect to 100 parts by mass of the total epoxy resin; requirement (3): the content of the component [C] is from 10 to 40 parts by mass, with respect to 100 parts by mass of the total epoxy resin; requirement (4): the resin composition contains a total of 40 parts by mass or more of the component [B] and the component [C], in 100 parts by mass of the total epoxy resin; and requirement (5): the resin composition does not contain a component [E] which is a glycidylamine type epoxy resin, or in cases where the resin composition contains the component [E], the content thereof is 10 parts by mass or less with respect to 100 parts by mass of the total epoxy resin.

Dependencies are inferred from the claim text.