▎ 摘　　要

NOVELTY - Preparing polyacrylate functionalized graphene modified polyurethane composite coating, comprises e.g. (i) adding mixed solution of dichloromethane containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and carbon tetrachloride to react into mixed solution of hydroxyethyl acrylate and triethylamine, (ii) placing butyl acrylate, ethyl acrylate, acrylic acid, acrylate-based phosphaphenanthrene derivatives, benzoyl peroxide and 2,2,6,6-tetramethyl-1-piperidine oxide in reaction flask, and polymerizing, (iii) dissolving graphene oxide and (2,2,6,6-tetramethylpiperidin-1-yl)oxy terminal phosphaphenanthrenyl acrylate in toluene solvent, and reacting, centrifugal washing and drying, and (iv) adding (2,2,6,6-tetramethylpiperidin-1-yl)oxy-terminated phosphaphenanthrene acrylate grafted graphene, emulsifier, aqueous defoamer, aqueous leveling agent, and fat-soluble antioxidant. USE - The method is useful for preparing polyacrylate functionalized graphene modified polyurethane composite coating. ADVANTAGE - The polyacrylate functionalized graphene modified polyurethane composite coating increases service life of flame retardant coatings; and has increased crosslinking density and improved mechanical properties of composite coatings. DETAILED DESCRIPTION - Preparing polyacrylate functionalized graphene modified polyurethane composite coating, comprises (i) adding mixed solution of dichloromethane containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and carbon tetrachloride to react into mixed solution of hydroxyethyl acrylate and triethylamine to obtain acrylate phosphaphenanthrene derivatives (C18H17O5P), (ii) placing butyl acrylate, ethyl acrylate, acrylic acid, acrylate-based phosphaphenanthrene derivatives, benzoyl peroxide and 2,2,6,6-tetramethyl-1-piperidine oxide in reaction flask, carrying out the polymerization reaction under argon atmosphere to obtain (2,2,6,6-tetramethylpiperidin-1-yl)oxy terminal phosphaphenanthrenyl acrylate, (iii) dissolving graphene oxide and (2,2,6,6-tetramethylpiperidin-1-yl)oxy terminal phosphaphenanthrenyl acrylate in a toluene solvent, and reacting under argon atmosphere, centrifugal washing and drying to obtain phosphaphenanthrenyl acrylate grafted graphite alkene, and (iv) adding (2,2,6,6-tetramethylpiperidin-1-yl)oxy-terminated phosphaphenanthrene acrylate grafted graphene, emulsifier, aqueous defoamer, aqueous leveling agent, fat-soluble antioxidant, stirring to obtain polyacrylate functionalized graphene modified polyurethane composite coating.