助剂N在粘胶织物活性染料印花中的应用工艺研究

Study on Application of Additives N in Reactive Dye Printing Process Technology of Viscose Fabric

采用助剂N代替尿素进行粘胶织物的活性染料印花实验,旨在解决因大量使用尿素而引起的印染废水中氨氮超标问题。讨论了粘胶织物无尿素印花工艺,测试了印花织物的K/S值、色牢度和渗透率等;并对助剂N在印花中的作用进行了分析。实验结果表明：助剂N用于粘胶织物印花的最佳工艺条件为：助剂N 6%,防染盐S 1.5%,碳酸氢钠3%,饱和蒸气下气蒸100min。在该最佳工艺下,活性红P-4B、活性黄PX-6GN、活性宝蓝CDR和活性黑NN印花粘胶织物K/S值较高,耐洗色牢度≥4级、干摩擦牢度达到4级、湿摩擦牢度≥3~4级,渗透率达到81%以上,略低于全尿素水平。

The additive N replaced urea for reactive dye printing experiment of viscose fabric in order to solve excessive ammonia nitrogen in printing and dyeing wastewater caused by large quantities of use of urea. Urea-free printing process of viscose fabric was discussed, and K/S value, color fastness and permeability of printed fabric were tested, in addition, functions of additive N in printing were analyzed. The results show that the optimal technological conditions of additive N used for viscose fabric printing are as follows： additive N 6%, resist salt S 1.5 % and sodium bicarbonate 3 %. Under such conditions, K/S value of active red P-4B, active yellow PX-6GN, active sapphire blue CDR and active black NN printed viscose fabrics is high; wash fastness≥4; dry rubbing fastness reaches level 4; wet rubbing fastness ≥3~4; permeability exceeds 81%, slightly lower than all-urea level.