Reinforcement material, method for manufacturing reinforcement material, method for manufacturing composite material, and composite material

Abstract

To provide a reinforcement material that has a sufficient amount of functional groups on the surface and exhibits excellent surface adhesion so as to be able to composite with a resin. In order to solve the above issue, the present disclosure provides a reinforcement material that is a continuous fiber and has a total acidic functional group concentration on the surface of the reinforcement material of 0.4 mmol/g or more and 4.0 mmol/g or less.

Dependencies are inferred from the claim text.