▎ 摘　　要

NOVELTY - Preparing heat-resistant aqueous sizing agent for carbon fiber involves adding reduction-oxidation graphene-magnetic particle to the polyamic acid aqueous dispersion, subjecting to ultrasonic dispersion treatment to obtain the finished product. USE - Method for preparing heat-resistant aqueous sizing agent for carbon fiber (claimed). ADVANTAGE - The method enables in preparing heat-resistant aqueous sizing agent for carbon fiber, which has excellent heat resistance and is environment-friendly, and is suitable for polyimide, polyether sulfone, polyetheretherketone, and has high temperature resistant engineering plastic.