SIZING AGENT FOR CARBON FIBERS AQUEOUS DISPERSION OF SIZING AGENT FOR CARBON FIBERS AND CARBON FIBER BUNDLE TO WHICH SIZING AGENT ADHERES

摘要

A sizing agent for carbon fibers comprising a component (A), a component (B), and a component (C), wherein the component (A) is a component (A-1), a component (A-2), and a component (A-) 3) at least one selected from the group consisting of, the component (A-1) is a urethane compound having a structure of formula (1-1) in the molecule, and the component (A-2) is a molecule is an ester compound having a structure represented by formula (1-2) in, the component (A-3) is an amide compound having a structure of formula (1-3) in a molecule, and the component (B) is a formula It is an epoxy compound selected from the group consisting of an epoxy compound represented by (2), an epoxy compound represented by Formula (3), and an epoxy compound represented by Formula (4), wherein the component (C) is a bisphenol-type epoxy compound Phosphorus, sizing agent for carbon fiber.