China Factory Supply High Quality Polyurethane Resin

Polyurethane (PU), full name of polyurethane, is a polymer material formed by polyols and polyisocyanates through condensation polymerization and has excellent mechanical properties [1], with strong plasticity. Its synthesis can be traced back to 1937, when Professor Byaer first synthesized straight-chain linear polyurethane resin with 1, 6-hexadiisocyanate and 1, 4-butanediol as raw materials [2]. Several main categories of polyurethane include polyether type, polyester type, polyimide type, polyurea type, etc. They can be made into polyurethane plastics (mainly foam), polyurethane fibers (called spandex in China), polyurethane rubber and elastomers [3] and other materials.
After nearly 80 years of technological development, the application of this material is very wide, involving products such as coatings, adhesives, fabric finishing agents, leather modifiers, polyurethane soft/hard foam, elastomers, etc., used in textile, construction, aviation, shipping, transportation, medicine, electronics and other fields. Soft polyurethane mainly has a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam materials, and has smaller compression deformation. Good thermal insulation, sound insulation, anti-seismic and anti-gas performance. Therefore, it is used as packaging, sound insulation and filtration materials. Rigid polyurethane plastic light weight, sound insulation, excellent thermal insulation, chemical resistance, good electrical properties, easy processing, low water absorption. It is mainly used in construction, automobile, aviation industry, thermal insulation structural materials. Polyurethane elastomer properties between plastic and rubber, oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness, elastic. It is mainly used in the shoe industry and medical industry. Polyurethane can also make adhesives, coatings, synthetic leather and so on