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聚氨酯是一个大类材料,由二异氰酸酯和二醇经加成聚合而成。视所用原材料和添加剂不同,会形成泡沫或密实体系。其中还有热熔胶、反应性粘合剂和清漆。大多数技术人员对聚氨酯的印象主要是占市场份额最大的聚氨酯泡沫以及相
Polyurethane is a large class of materials that are formed by the addition polymerization of diisocyanates and diols. Depending on the raw materials and additives used, a foam or dense system can form. Among them are hot-melt adhesives, reactive adhesives and varnishes. Most technologists’ impression of polyurethane is mainly polyurethane foam with the largest market share and phase