| abstract |
A method for preparing a flame-retardant, antibacterial, and waterborne polyurethane coating and adhesive, comprising: adding 0.05 g of dibutyltin dilaurate, 73 g of poly(tetramethylene ether)glycol, and 16 g of isocyanate to a 250 mL three-necked flask equipped with a stirrer, a condenser, and a thermometer, and carrying out a reaction at 70-90°C for 1-3 h to obtain a polyurethane prepolymer A; adding 3.1 g of a flame retardant A, 1.5 g of an antibacterial agent, and 16.7 g of a solvent acetone to the polyurethane prepolymer A, and carrying out a reaction at 60-90°C for 2-4 h, adding 6.7 g of triethylamine and carrying out a neutralization reaction for 90 min, adding 80-90 g of water and performing stirring and emulsification for 0.5 h , so as to obtain a flame-retardant, antibacterial, and waterborne polyurethane coating and adhesive. The material can be used for interior and exterior wall coatings, metal finishing and anti-corrosion coatings, paints for wood, and as a leather finishing agent. |