Polyurethane rigid foam

       Polyurethane rigid foam is a high-density closed-cell plastic with an extremely low thermal conductivity (0.018-0.028 W/(m·K)), high strength, and waterproof flame-retardant properties.Manufactured through continuous foaming or molding processes, widely used in building exterior insulation, cold chain logistics cold storage, pipeline insulation, and industrial equipment cooling.$10$The closed cell rate exceeds 90%, with compressive strength up to 300kPa. It is compatible with the non-fluorine environmental protection foaming technology, meeting low-carbon and energy-saving requirements.Compared to soft foam, rigid foam emphasizes thermal insulation and structural support functions.