▎ 摘　　要

NOVELTY - An asphalt modifier comprises 20-30 pts. wt. graphene, 10-15 pts. wt. carbon nanotubes, 4-8 pts. wt. dopamine, 15-25 pts. wt. vegetable oil polyol, 30-40 pts. wt. polytetrafluoroethylene fiber and 1-3 pts. wt. stabilizer. USE - Asphalt modifier. ADVANTAGE - The modifier has excellent compatibility with respect to asphalt, and adhesion with asphalt. The durability and adding phenomenon of the asphalt can be improved. The segregation phenomenon can be effectively prevented. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the asphalt modifier, which involves dispersing 20-30 pts. wt. graphene in water, ultrasonically treating for 10-20 minutes, adding dopamine hydrochloride, treating at 30-60 degrees C for 2-4 hours, freeze-drying, crushing to produce modified graphene, dispersing 30-40 pts. wt. polytetrafluoroethylene fiber in absolute ethanol, adding 10-15 pts. wt. carbon nanotubes to the absolute ethanol, stirring at 800-1200 rpm for 30-40 minutes, performing vacuum filtration, volatilizing ethanol to obtain modified polytetrafluoroethylene fiber, mixing modified graphene, modified polytetrafluoroethylene fiber, 15-25 pts. wt. vegetable oil polyol and 1-3 pts. wt. stabilizer.