Pu foam is made of isocyanate and polyether as the main raw materials. Under the action of various additives such as blowing agent, catalyst, flame retardant, etc., it is mixed by special equipment and foamed on-site by high-pressure spraying. Things.
Polyurethane foam has two types: soft foam and hard foam. Soft foam has an open-cell structure, and hard foam has a closed-cell structure; soft foam is divided into two types: crust and non-crust.
The main function of soft polyurethane foam is cushioning. Polyurethane soft foam is often used in sofa furniture, pillows, cushions, toys, clothing and sound insulation linings.
Pu foam is a new type of synthetic material with thermal insulation and waterproof functions. Its thermal conductivity is low, only 0.022～0.033W/(m*Κ), which is equivalent to half of the extruded board and the lowest thermal conductivity of all thermal insulation materials. of. Rigid polyurethane foam is mainly used in building exterior wall insulation, integrated roof waterproof and thermal insulation, cold storage insulation, pipeline insulation materials, building boards, refrigerated trucks and cold storage insulation materials.