Polyurethane is a synthetic polymer material produced by the reaction of polyols and esters of isocyanates. It has good elasticity and wear resistance, and is widely used in various fields such as furniture, automobiles, construction, shoes, etc. The production process of polyurethane includes steps such as raw material pretreatment, reactor reaction, and post-treatment. The selection and ratio of polyols and isoesters have a significant impact on the properties of polyurethane. There are many kinds of polyurethane, including hard polyurethane, soft polyurethane, polyurethane foam, etc. The production and use of polyurethane have a certain impact on the environment, therefore corresponding environmental protection measures need to be taken.
