▎ 摘　　要

NOVELTY - Biodegradable low-surface-energy graphene antifouling coating material is prepared by adding graphene-grafted polycaprolactone macroinitiator, copper bromide and 2,2-bipyridine to reactor, passing nitrogen, adding perfluorohexyl ethyl methacrylate, heating mixture at 85-100 degrees C, magnetically stirring mixture until the dark brown viscous liquid is formed in the system, precipitating polymerization product with methanol after completing reaction, suction filtering mixture and vacuum-drying mixture at 60 degrees C for 72 hours. USE - Preparation of biodegradable low-surface-energy graphene antifouling corrosion-resistant coating material used for ship, offshore oil platform and underwater pipeline. ADVANTAGE - The method enables preparation of biodegradable graphene coating material with low surface energy and excellent compatibility, degradation characteristics, corrosion resistance with respect to seawater, mechanical property and antifouling property by environmentally-friendly method. DETAILED DESCRIPTION - Bishydroxy functional graphene is prepared by modified Hummers method and by adding sodium dodecyl benzene sulfonate to obtained graphene oxide, ultrasonically mixing mixture to obtain graphene oxide gel, adding graphene oxide gel having concentration of 70 %mass to container to form graphene oxide aqueous suspension, adding hydrazine hydrate under vigorous stirring, reacting mixture at 75-90 degrees C in water bath for 5-6 hours, cooling mixture to room temperature, filtering and washing mixture with ethanol for predetermined times, drying mixture to obtain pure reduced graphene, adding graphene, 2,2'-bishydroxybenzaldehyde and N-glycine to dimethylformamide, ultrasonically treating mixture for 10-30 minutes, evenly dispersing mixture, reacting mixture at 110-120 degrees C in oil bath for 5-6 days, centrifugally mixing mixture, washing mixture with anhydrous ethanol and drying mixture. Graphene-grafted polycaprolactone is prepared by weighing epsilon -caprolactone, hydroxylated graphene, stannous octoate and 30 mL anhydrous toluene to reactor, heating mixture at 110-130 degrees C for 20-24 hours, reacting mixture, filtering mixture, dissolving crude product in methanol, adding small amount of concentrated hydrochloric acid in methanol, filtering mixture, washing mixture with dichloromethane and methanol and drying product under vacuum. Graphene-grafted polycaprolactone macroinitiator is synthesized by dispersing graphene-grafted polycaprolactone in dichloromethane, ultrasonically mixing mixture, dripping triethylamine, stirring mixture in ice bath for 10-30 minutes, dripping alpha -bromoisobutyryl bromide, continuously stirring mixture in ice bath for 4-6 hours and stirring mixture at room temperature for 40-48 hours. Biodegradable low-surface-energy graphene antifouling coating material is prepared by adding graphene-grafted polycaprolactone macroinitiator, copper bromide and 2,2-bipyridine to reactor, passing nitrogen, adding perfluorohexyl ethyl methacrylate, heating mixture at 85-100 degrees C, magnetically stirring mixture until the dark brown viscous liquid is formed in the system, precipitating polymerization product with methanol after completing reaction, suction filtering mixture and vacuum-drying mixture at 60 degrees C for 72 hours.