The difference between polyurethane foam and polystyrene foam

polyurethane hard foam is a polymer made of isocyanate and polyether as the main raw materials, adding foaming agent, catalyst and other additives, mixed through special equipment, and foamed on-site through high-pressure injection. polystyrene foam is made of polystyrene resin as the main body and added with additives such as foaming agent. it is a…