Polyurethane material is the abbreviation of polyurethane, which is called polyurethane in English and is a kind of polymer material. Polyurethane is a polymer containing carbamate groups in the main chain of macromolecules, which is called polyurethane for short. Polyurethane can be divided into two categories: polyester polyurethane and polyether polyurethane. Polyester is polyurethane prepared from diisocyanate and hydroxyl-terminated polyester. Polyether polyurethane is polyurethane prepared from diisocyanate and hydroxyl-terminated polyether.
Flexible polyurethane mainly has thermoplastic linear structure, which has better reading stability, chemical resistance, resilience and mechanical properties than PVC foam, and has older and smaller compression deformation ability. Good heat insulation, sound insulation, earthquake resistance and anti-virus performance. Therefore, it is used as packaging, sound insulation and filtering materials.
Rigid PU plastic has the advantages of light weight, excellent sound insulation, chemical resistance, good electrical properties, easy processing and low water absorption. It is mainly used as a structural material in the construction, automobile and aviation industries. The performance of polyurethane elastomer is between plastic and rubber, with oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity. Mainly used in footwear industry, medical industry, synthetic leather and so on.
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