▎ 摘　　要

NOVELTY - Preparing graphene modified self-healing microcapsule coating, comprises e.g. (i) mixing melamine, urea, formaldehyde solution, adjusting the pH, stirring to obtain melamine-urea-formaldehyde mixed solution, mixing Tween-80, cyanuric acid triglycidyl epoxy resin (sic), and n-butanol, stirring, cooling, adding melamine-urea-formaldehyde mixed solution and resorcinol, adjusting the pH, stirring, cooling, filtering to obtain microcapsules, (ii) dissolving metal salt compounds and imidazole compounds in methanol respectively, ultrasonically dispersing, mixing, stirring, and washing and centrifuging, and drying to obtain latent curing agent, (iii) ultrasonically dispersing graphene oxide in tetrahydrofuran to obtain graphene oxide dispersion solution, heating, and (iv) respectively adding cyanuric acid triglycidyl epoxy resin (sic), latent curing agent, and microcapsules into graphene oxide dispersion solution, slowly stirring evenly, then adding curing agent, and curing. USE - The method is useful for preparing graphene modified self-healing microcapsule coating. ADVANTAGE - The graphene modified self-healing microcapsule coating: loads microcapsules and latent curing agent through the two-dimensional layered structure of graphene; has high tensile strength, high repair efficiency, uniform dispersion, strong adhesion, excellent mechanical properties and high recovery rate of mechanical properties after repair; is not easy to fall off; and realizes the application of epoxy resin composite coating in improving mechanical strength. DETAILED DESCRIPTION - Preparing graphene modified self-healing microcapsule coating, comprises (i) mixing 1.00-6.30 g melamine, 1.8-9.00 g urea, 2.70-13.48 g formaldehyde solution, adjusting the pH of the reaction system to 8-9 using triethanolamine, stirring at 60-80 degrees C for 0.5-2 hours to obtain melamine-urea-formaldehyde mixed solution, mixing 1.00-3.00 g Tween-80, 1.00-4.00 g cyanuric acid triglycidyl epoxy resin (sic), and 0.20-0.50 ml n-butanol, stirring at 70-80 degrees C for 1.5-2.5 hours, cooling to room temperature, adding melamine-urea-formaldehyde mixed solution and 2.00-3.00 g resorcinol, adjusting the pH to 3-4 using 0.1 mol/l dilute hydrochloric acid, stirring uniformly at 70-80 degrees C for 2-3 hours, cooling to room temperature after reacting, filtering the with acetone, absolute ethanol, and deionized water for 2-3 times to obtain microcapsules, (ii) dissolving 0.67-4.38 g metal salt compounds and 0.68-8.20 g imidazole compounds in 10-50 ml methanol respectively, ultrasonically dispersing, then mixing the two together, stirring at 25 degrees C for 12-24 hours, and washing and centrifuging the resulting solution, and drying at 50-70 degrees C for 12-24 hours to obtain latent curing agent, (iii) ultrasonically dispersing 100-300 mg graphene oxide in tetrahydrofuran to obtain 1-5 mg/ml graphene oxide dispersion solution, heating at 70-90 degrees C for 20-40 minutes, and (iv) respectively adding 5.00-8.00 g cyanuric acid triglycidyl epoxy resin (sic), 0.20-0.40 g of the latent curing agent prepared in step (ii), and 1.00-3.00 g of the microcapsules prepared in step (i) into the graphene oxide dispersion solution obtained in step (iii), slowly stirring evenly, then adding 1.20-2.00 g curing agent, curing at 25-40 degrees C for 1.5-3.0 hours, and curing at 80-100 degrees C for 1-2 hours to obtain final product. An INDEPENDENT CLAIM is also included for graphene modified self-healing microcapsule coating, obtained by above mentioned method.