▎ 摘　　要

NOVELTY - Method for preparing polyurethane-modified graphene microchips comprises (i) adding graphene oxide and polyol into a three-necked flask, stirring and mixing, and simultaneously performing high-temperature vacuum dehydration; (ii) high-temperature vacuum dehydrating, mixing and stirring, stopping heating, controlling the reaction temperature to cool to room temperature, and gradually adding isocyanate, monitoring the reaction temperature, adjusting the addition rate according to the reaction temperature, and controlling the reaction temperature to less than T degrees C; and (iii) adding isocyanate, reacting for 10-30 minutes, controlling the reaction temperature within the range of 75-85 degrees C by heating in an oil bath, stirring the reaction for 1.5-3 hours, and using a filter to filter and encapsulate to complete the preparation of polyurethane modified graphene microchips. USE - The method is useful for preparing polyurethane-modified graphene microchips. ADVANTAGE - The microchip greatly improves the corrosion resistance of the coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for polyurethane-modified graphene microchip prepared by the above mentioned method.