线性聚醚嵌段氨基硅油改性水性聚氨酯抗起毛起球剂的合成及其应用

为改善羊绒针织物的抗起毛起球性能，以聚四氢呋喃醚二醇为软段，二羟甲基丙酸为亲水性扩链剂，异佛尔酮二异氰酸酯为硬段，线性聚醚嵌段氨基硅油（LEPS）为改性剂，制备了改性水性聚氨酯（WPU）整理剂。借助傅里叶变换红外光谱仪、动态热机械分析仪与滚箱式起毛起球实验仪等，对改性WPU 的结构和性能进行表征。结果表明：LEPS 改性明显提高了WPU 胶膜的柔顺性，改性WPU 整理羊绒针织物的起毛起球等级由2 ～ 3 级提高至4 级，整理织物手感柔软；与未整理织物相比，整理织物色差较小，摩擦色牢度相当；整理织物的静电衰减时间由8.7 s 缩短至2.7 s，整理效果的耐久性能良好

Synthesis and application of waterborne polyurethane anti-pilling agent modified by linear polyether-blocked amino silicone

In order to improve the anti-pilling performance of knitted cashmere fabric, modified waterborne polyurethane (WPU) finishing agent was pre pared by using polytetrahydrofuran ether glycol as soft segment, dimethylolpropionic acid as hydrophilic chain extender, and isophorone diisocyanate as hard segment and linear polyether-blocked amino silicone (LEPS) as modifier.The structure and properties of modified WPU were characterized by means of Fourier transform infrared spectrometry, dynamic thermo mechanical analyzer, rolling box type pilling tester and so on. The results show that the modification by LEPS could obviously improves the flexibility of WPU film.The pilling grades of LEPS modified WPU finished knitted cashmere fabricis improved from 2-3 to 4 with soft touch. The color and color fastness to rubbing of the finished fabric are almost equal to those of the untreated fabric,static decay time of the finished fabric is reducedfrom 8.7 s to 2.7 s,and the durability of the finished effect is good.