羟丙基硅油改性水性聚氨酯在纯棉织物整理中的应用

Performance of Hydroxypropyl Silicone Modified Waterborne Polyurethane Applied in Cotton Finishing

以异佛尔酮二异氰酸酯(IPDI)、聚丙二醇(PPG)、羟丙基硅油(M=4000)、甘油聚醚(G-18)、二羟甲基丙酸(DMPA)和二乙烯三胺等为原料,合成了有机硅改性聚氨酯乳液,并制备了4种不同有机硅含量的乳液,再将其分别稀释成4种不同浓度的乳液,应用于纯棉织物整理,测试了整理前后棉织物的风格、强力等各项性能变化。结果表明,当有机硅改性聚氨酯乳液中有机硅质量分数为6%、整理剂浓度为100g/L时,整理后棉织物的综合性能最佳,织物表面光滑性大大提高,耐热性能得到较大的改善,经向断裂强力可达725.0N,增幅为27.35%;急弹回复角和缓弹回复角分别可以达到218°和230°,增幅分别为21.11%和12.20%。

The silicone-modified polyurethane prepolymer was synthesized by step-growth polymerization of isophorone diisocyanate with polypropylene glycol,organosilicone,glycerin polyether,glycerin polyether and dimethylol propionic acid.After four kinds of silicone-modified polyurethane with different organic silicon content were obtained and then be emulsified into four kinds of different concentration emulsion.The silicone-modified polyurethane emulsion was applied in cotton finishing and the performances of treated and untreated fabrics were tested.When the amount of finishing agent is 100g/L,the silicone mass fraction of the finishing agent is 6%,the cotton fabric have the best comprehensive performance.The smoothness,softness and thermal property are greatly improved.The breaking strength of cotton fabric treated with this agent achieves 725.3N,which increases by 27.35% comparing to that of the untreated fabric.Urgent elastic recovery angle and gentle elastic recovery angle of treated fabric reach 218° and 230° respectively,which increase by 21.11% and 12.20% respectively.