Polyurethane Foam

       Polyurethane foam is categorized into chemical foaming and physical foaming. It undergoes three stages: expansion, gelling, and curing, and can be applied through spraying, casting, or molding. The foamed products feature lightness, insulation, and energy-absorption properties. Structurally, they are divided into soft foam (pored, high elasticity) and rigid foam (closed cell, high rigidity). They are widely used in building insulation, automotive seats, cold chain equipment, and furniture filling. By adjusting the catalyst, foaming agents (water or fluoro-carbon types), and raw material ratios, the pore density, hardness, and temperature resistance can be precisely controlled to meet requirements for soundproofing, vibration reduction, or energy conservation.