▎ 摘　　要

NOVELTY - A food contact-type PTFE composite coating comprises 30-70 %mass PTFE, 10-20 %mass triethylamine, 10-20 %mass hydroxyl polymer, 2-10 %mass mica, 2-10 %mass diethylene glycol butyl ether, 1-5 %mass graphene oxide and balance amount of solvent. USE - The food contact-type PTEE composite coating is useful for cooking utensils, preferably a non-stick pan (claimed). ADVANTAGE - The food contact-type PTFE composite coating has excellent friction resistance and wear resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the food contact-type PTTE composite coating, which involves: (1) preprocessing and removing impurities on the surface of a substrate; (2) spraying the food contact-type PTEE composite coating on the surface of the substrate; and (3) placing the substrate coated with the composite coating into a heating device, heating and curing, and then cooling to room temperature to obtain the product.