▎ 摘　　要

NOVELTY - Preparing graphene modified flame retardant waterborne polyurethane coating and adhesive comprises e.g. adding ammonium molybdate, nano silver and 1,5-naphthalene disulfonic acid to terephthalic acid and deionized water, stirring, then reacting, filtering and washing in water, and drying to obtain metal-organic frameworks (MOFs), ammonium molybdate, nano silver, the mass ratio of 1,5-naphthalene disulfonic acid, terephthalic acid and deionized water, adding dimethyl phosphite to the reaction vessel, then adding sodium methoxide and heating until all the sodium methoxide is dissolved, adding acrylamide separately, triallyl isocyanurate, allyl triisopropyl silane and acryl hydroxamic acid, diethyl malonate, cooling, keep stirring and reacting to obtain intermediate, adding MOFs and hydroxylated graphene to the intermediate, reacting, then adding 2,5-dihydroxy-3,6-dinitro 1,4-benzoquinone and propionyl chloride, dopamine and p-aminobenzenesulfonamide. USE - The method is useful for preparing graphene modified flame retardant waterborne polyurethane coating and adhesive. ADVANTAGE - The method: has outstanding efficacy in improving the two important indicators of flame retardancy and antistatic of polyurethane coatings and adhesives. DETAILED DESCRIPTION - Preparing graphene modified flame retardant waterborne polyurethane coating and adhesive comprises (i) adding ammonium molybdate, nano silver and 1,5-naphthalene disulfonic acid to terephthalic acid and deionized water, stirring at 50-60 degrees C for 30-60 minutes, then reacting at 180-200 degrees C for 2-3 hours, filtering and washing in water, and drying to obtain metal-organic frameworks (MOFs), ammonium molybdate, nano silver, the mass ratio of 1,5-naphthalene disulfonic acid, terephthalic acid and deionized water is (120-140):(6-7):(16-34):200:600; (ii) adding dimethyl phosphite to the reaction vessel, then adding sodium methoxide and heating to 75-95 degrees C after all the sodium methoxide is dissolved, adding acrylamide separately, triallyl isocyanurate, allyl triisopropyl silane and acryl hydroxamic acid, diethyl malonate, cooling to 50-70 degrees C, keep stirring and reacting for 2-5 hours to obtain intermediate, adding MOFs and hydroxylated graphene obtained in step (i) to the intermediate, reacting at 60-90 degrees C for 0.5-1.5 hours, then adding 2,5-dihydroxy-3,6-dinitro 1,4-benzoquinone and propionyl chloride, dopamine and p-aminobenzenesulfonamide, carrying out polymerization reaction at 60-70 degrees C for 1-2 hours to obtain flame retardant MOFs complex, dimethyl phosphite, sodium methoxide, acrylamide, triallyl isocyanurate, allyl triisopropyl silane, acryl hydroxamic acid, diethyl malonate, MOFs, hydroxylated graphene, 2,5-dihydroxy-3,6-dinitro-1,4-benzoquinone to propionyl chloride, dopamine and p-aminobenzenesulfonamide is 600:(12-18):(650-850):(1-7):(4-7 ):(1-6):(2-3):(32-46):(0.5-1):(1-2):(0.2-0.4):(2-7):(0.5-0.8); (iii) adding the coupling agent, dispersant and water to the flame-retardant MOFs compound prepared in step (ii), and emulsifying the flame-retardant MOFs dispersion liquid by shear; (iii) mixing polymer polyol, isocyanate and dibutyltin dilaurate at 50-60 degrees C, reacting for 1-2 hours, then heating to 75-85 degrees C, adding polyol chain extender, performing flame retardant MOFs dispersion and water, continuously reactning at 80-90 degrees C for 1-2 hours to prepare polyurethane coating and adhesive, the mass ratio of polymer polyol, isocyanate and dibutyltin dilaurate in a mass ratio of (25-28):10:0.2, and the added amount of polyol chain extender is 0.26-0.38 times the mass of isocyanate, the added amount of flame retardant MOFs dispersion is 0.5-0.8 times the mass of isocyanate, and the added amount of water is 1.2 times the mass of isocyanate.