聚氨酯泡沫塑料是把含有羟基的聚醚树脂或聚酯树脂与异氰酸酯反应生成聚氨酯y 体,并由异氰酸酯与水反应生成二氧化碳发泡,或由低沸点氟碳化合物(如三氯氟甲烷)作为发泡剂发泡,制造过程中为了加速发泡和有利于气泡的形成还加入适量的催化剂和稳定剂等,然后通过聚合凝固而成泡沫塑料。聚氨酯泡沫塑料按性质不同,可分为硬质、半硬质和软质三种。硬质聚氨酯泡沫塑料具 Polyurethane foam is a hydroxyl-containing polyether resin or polyester resin and isocyanate react to form polyurethane y-body and by the reaction of isocyanate and water to generate carbon dioxide foam, or by low-boiling point fluorocarbons (such as trichlorofluoromethane) as the hair Foam foam, in the manufacturing process in order to speed up the foaming and is conducive to the formation of bubbles also add the right amount of catalyst and stabilizer, and then through the polymerization and solidification into a foam. Polyurethane foam by nature, can be divided into hard, semi-hard and soft three. Rigid polyurethane foam with