Core Tip: Abbreviation for Polyurethane. The resin having a repeating -HNCO-O- group in the main chain of the polymer is usually formed by stepwise addition polymerization of a polyisocyanate, a polyol polymer or an aromatic diamine.

Abbreviation for polyurethane. The resin having a repeating -HNCO-O- group in the main chain of the polymer is usually formed by stepwise addition polymerization of a polyisocyanate, a polyol polymer or an aromatic diamine. Since polyurethanes contain highly polar urethane groups and adjust the ratio of NCO/OH in the formulation, different products of thermoset polyurethanes and thermoplastic polyurethanes can be made. According to its molecular structure, it can be divided into two types: linear type and body type. Due to the different crosslink density, the bulk structure can exhibit hard, soft or intermediate properties, with high strength, high wear resistance and solvent resistance.

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Label: What are the characteristics of polyurethane?

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