▎ 摘　　要

NOVELTY - Preparing self-cleaning coating agent, comprises (1) contacting sodium silicate, nano zinc oxide, nano copper oxide, graphene, sulfur and water, curing, finally drying and crushing to obtain antifouling auxiliary, and (2) mixing acrylic resin emulsion, white carbon black, silane coupling agent, capsaicin, cobalt naphthenate, organic solvent and antifouling auxiliary to obtain self-cleaning coating agent. USE - The agent is useful for applying on water heater exhaust pipe (claimed). ADVANTAGE - The method is simple and easy to obtain raw material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for self-cleaning coating agent produced by the above method.