摘要
Abstract
The amount of indigo dye was fixed, and the dosage of sodium hyposulfite, caustic soda and color deepening agent DK were used as the influencing factor. The central compound test method was used to design the concentrated dyeing solution. After the mother liquor was diluted, the fabric was dyed, and the influence of each factor was evaluated by testing the color depth K/S value, and the system was optimized. The results showed that the addition of color deepening agent DK could significantly promote the K/S value of the fabric by 30%, and the dosage of sodium hyposulfite, caustic soda and color deepening agent gave signifi-cant impact on the color strength of the dyed fabrics. The optimized dosages for concentrated dyeing solution were indigo 75 g/L, sodium hyposulfite 108 g/L, caustic soda 50 g/L, color deepening agent 43 g/L. When the amount of color deepening agent was 40% of the amount of indigo dye, the dosage of indigo and sodium hy-posulfite could reduce by 20%. The friction fastness, color fading level and shade to chlorine and enzymatic wash were basical y the same, and the cost was reduced by about 15%.关键词
靛蓝染色/增深剂/中心复合试验法/体系优化Key words
indigo dyeing/color deepening agent/central composite experimental design/system opti-mization分类
化学化工
