▎ 摘　　要

NOVELTY - Modified graphene-enhanced impact-resistant polyurea coating comprises A component and B component. The volume ratio of A component:B component is 1:1. A component includes polyether polyol, diisocyanate and diluent in mass ratio (55-75): (25-35): (3-10). Component B includes amino-modified graphene, multi-amino-terminated polyoxypropylene ether, amino-terminated polyether and liquid amine chain extender in mass ratio (40-80):(60-20). The mass percentage of amino-modified graphene in component B is 0.05 wt.% to 10 wt.%. According to the mass ratio, amino-modified graphene: polyoxymethylene-terminated polyoxypropylene ether is (0.5-10):100. USE - Modified graphene-enhanced impact-resistant polyurea coating. ADVANTAGE - The modified graphene-enhanced impact-resistant polyurea coating has high impact strength and toughness, as well as corrosion and thermal conductivity and method maintains the mechanical properties of traditional polyurea and improve the impact resistance, solves the problem of poor dispersion of graphene in the matrix material, which greatly expands the application field of polyurea products. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing modified graphene-enhanced impact-resistant polyurea coating, which involves mixing prepolymerization process of A component with dehydrated polyether polyol, diisocyanate and diluent to obtain mixture A, putting mixed material A into the cell disrupter, and dispersing for 5-15 minutes to obtain the dispersion solution A, placing the dispersion solution A at 60-90degreesC for 3-5h to obtain the A component, mixing Amino-modified graphene and polyoxymethylene-terminated polyoxypropylene ether, grinding for 20 to 40 minutes, ultrasonic treatment is performed for 10 to 20 minutes to obtain a mixture, adding amino-terminated polyether and liquid amine chain extender to the mixture, and stirring at room temperature for 2-4 hours to obtain component B; (2) a using method of the modified graphene reinforced anti-impact polyurea coating, which involves heating components A and B to the same construction temperature respectively, and carrying out spraying construction according to the volume ratio, component A: component B = 1:1. DESCRIPTION OF DRAWING(S) - The drawing shows a graph of data contrast of the impact energy of a polyurea coating sprayed in each example. (Drawing includes non-English language text). Component pre-polymerization process (1) Comparative example (2) Amplitude changing rod (6) Material ultrasonic treatment (10)