Aminated phosphorene-based flame-retardant waterborne polyurethane coating and preparation method thereof

An aminated phosphorene-based flame-retardant waterborne polyurethane coating, wherein components of the aminated phosphorene-based flame-retardant waterborne polyurethane coating consist of a diisocyanate-terminated prepolymer, a neutralizer and an aminated phosphorene;

• wherein the diisocyanate-terminated prepolymer is prepared from raw materials consisting of polymeric diol with water-dispersible groups, aliphatic diisocyanate, and carboxylic acid type hydrophilic diol under the catalysis of a catalyst;
• wherein a molar ratio of the aliphatic diisocyanate to the polymeric diol with water-dispersible groups is (1.5-2):1;
• a molar ratio of the carboxylic acid type hydrophilic diol to the polymeric diol with water-dispersible groups is (0.3-0.6):1;
• the catalyst is configured to synthesize waterborne polyurethane;
• a mass ratio of the catalyst to the diisocyanate-terminated prepolymer is (0.0001-0.0002):1;
• a molar ratio of the neutralizer to the carboxylic acid type hydrophilic diol is (0.8-1.2):1;
• and
• an amount of the aminated phosphorene is required to enable complete reaction of isocyanate groups.