What is polyurethane foam?

Polyurethane rigid foam is based on isocyanate and polyether as the main raw material, with the foaming agent, catalyst, flame retardant and other additives under the action of a special equipment, mixed by high-pressure spraying on-site polymer foaming polymer. There are two kinds of polyurethane foam: soft foam and hard foam. The soft bubble is open cell structure, and the hard bubble is closed cell structure; Soft blisters can be divided into two types: crusted and non crusted.

The main function of flexible polyurethane foam is buffer. Polyurethane foam is commonly used in sofa furniture, pillows, cushions, toys, clothing and sound insulation lining.

Rigid polyurethane foam is a new kind of composite material with the function of heat preservation and waterproof. Its thermal conductivity is low, only 0.022 ~ 0.033w / (m)* Κ)， Equivalent to half of the extruded board, is the lowest thermal conductivity of all insulation materials. Rigid polyurethane foam is mainly used in building external wall insulation, roof waterproof and thermal insulation integration, cold storage thermal insulation, pipe insulation materials, building plates, refrigerated trucks and cold storage insulation materials.