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发明公开
CN104153037A 具有吸湿放湿性能的聚氨酯弹性纤维的制备方法 有权

具有吸湿放湿性能的聚氨酯弹性纤维的制备方法
摘要：
本发明涉及一种具有吸湿放湿性能的聚氨酯弹性纤维的制备方法，1)以聚四氢呋喃醚二醇PTMG和二苯基甲烷-4,4’二异氰酸酯4,4’-MDI为基本原料，先后经预聚反应、扩链反应和链终止反应，得到聚氨酯脲原液；2)将天然高分子丝素蛋白粉末在有机溶剂二甲基乙酰胺DMAC中进行研磨分散，得到丝素蛋白悬浮液；3)将所述聚氨酯脲原液、丝素蛋白悬浮液同时计量入静态混合器中混合均匀，形成氨纶共混纺丝液；4)将制备的氨纶共混纺丝液，通过干法纺丝系统，对纺丝液进行喷吐、拉伸成丝，并随着溶剂挥发、干燥，即得到具有吸湿放湿性能的聚氨酯弹性纤维。本发明制备的产品与常规聚氨酯弹性纤维相比，其吸湿放湿性能明显提高。
摘要（英）：

The invention relates to a preparation method of a polyurethane elastic fiber with moisture absorption and moisture liberation performance. The method is as below: 1) successively conducting a prepolymerization reaction, a chain extension reaction and a chain termination reaction on raw materials of polytetramethylene ether glycol PTMG and diphenylmethane-4,4'diisocyanate 4,4'-MDI to obtain a polyurethane urea stoste; 2) grinding and dispersing a natural macromolecular fibroin powder in an organic solvent dimethylacetamide DMAC to obtain a fibroin suspension; 3) measuring and mixing the polyurethane urea stoste and fibroin suspension at the same time in a static mixer to form a spandex blended spinning solution; and 4) conducting spurting and filament stretching on the prepared spandex blended spinning solution by a dry method spinning system, and evaporating and drying the solvent, so as to obtain the polyurethane elastic fiber with moisture absorption and moisture liberation performance. Compared with conventional polyurethane elastic fiber, the product prepared by the invention has significantly improved moisture absorption and moisture liberation performance.

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