▎ 摘　　要

NOVELTY - Preparing modified hydroxypropyl silicone oil comprises (1) ultrasonically dispersing the nano silicon dioxide in liquid cage octaepoxy silsesquioxane, then dropping the mixed solution of 2, 2-dimethylol butyric acid and oxidized graphene ethanol solution, stirring while heating reaction, (2) adding dopamine, sodium phthalate into the product obtained in step (1), continuously heating and reacting under the inert atmosphere, then adding dopamine-coated nano silicon dioxide and hydroxypropyl silicone oil, and continuously reacting to obtain modified hydroxypropyl silicone oil. USE - The silicone oil is useful for anti-graffiti and anti-pollution coating, in household and wall decoration applications. ADVANTAGE - The silicone oil has excellent anti-pollution performance, wear resistance, strength and weather resistance, and improved cross-linking density.