Polyurethane microporous elastomer, and preparation and application thereof

• Main Authors: XU XIANGJING, LONG ENLIN, WU KAIXING
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a polyurethane microporous elastomer, and preparation and application thereof. The invention is characterized in that the polyurethane microporous elastomer is prepared from a polyhydroxylated compound, diisocyanate (NDI), a polymerization inhibitor, and at least one of a foaming agent, a chain extender and/or crosslinking agent, an additive and a catalyst. By selecting the polylol species and adding the appropriate polymerization inhibitor, the service life of the prepolymer is prolonged to 3-4 times, the harsh requirements for technological conditions are lowered, and the waste of materials is reduced, thereby lowering the production cost. 本发明提供了种聚氨酯微孔弹性体及其制备和应用。所述的聚氨酯微孔弹性体，其特征在于，其制备原料包括多羟基化合物、二异氰酸酯(NDI)和阻聚剂，还包括发泡剂、扩链剂和/或交联剂、添加剂和催化剂中的至少种。本发明的优点是经过精选多元醇的品种及添加合适的阻聚剂，使预聚体的使用寿命提高3～4倍，降低了工艺条件的苛刻要求，减少了材料的浪费，从而降低了生产成本。