Polyurethane foam is widely used

Polyurethane foam has excellent physical and mechanical properties, acoustic properties, electrical properties and chemical resistance. Especially the rigid polyurethane foam has a particularly low thermal conductivity and is a high-quality thermal insulation material. The density and hardness of polyurethane foams can vary with raw materials and formulations. In addition to molding, other plastics cannot be compared to them. Unlike polymers such as polyethylene and polyvinyl chloride, it is necessary to polymerize the monomers into granules before they can be processed into articles. Polyurethane is processed directly into a polymer product from a single raw material, which eliminates many intermediate processes such as polymerization, separation, refining, and extrusion into granules. When polyurethane is synthesized, it can be adjusted by changing the chemical structure, specifications and varieties of raw materials to produce end products with various properties and uses, such as conductive, magnetic, high temperature, low temperature, wear resistant, flame retardant and high. Rebound, slow rebound, high density, low density, reticulated foam, hydrophilic foam and other products meet the various technical requirements put forward by various industrial fields in the national economy.

China's polyurethane foam industry has developed rapidly, especially in market development. The current trend is to continue to expand the field of application. In order to save energy in buildings, the Ministry of Construction has issued energy-saving measures, requiring the use of new thermal insulation materials. Polyurethane foam sandwich materials are one of the main varieties of promotion and application.