基于二价铁盐和不同配体的靛蓝电化学染色体系

Indigo electrochemical dyeing system based on ferrous salt and different ligands

采用硫酸亚铁作为媒介与不同配体形成协同络合体系,对靛蓝染料进行间接电化学还原染色。通过测试染液还原电位、染料还原率、亚铁离子转化率等,探究不同配体组合对靛蓝染料间接电化学还原染色效果的影响机制。结合单因素分析,探究硫酸亚铁、葡萄糖酸钠、Abal B、氢氧化钠等化学药剂质量浓度对靛蓝染料间接电化学还原染色体系性能的影响。比较优化的还原染色工艺与传统保险粉染色工艺发现,前者染色棉织物的K/S值提高6.14%,且色牢度与传统染色工艺基本一致。染液循环染色5次内均能保持较好的染色深度。

The ferrous sulfate is selected as a medium to form synergistic complex system with different ligands, and the fabric is indirect electrochemical reducti on dyed by in digo dyes with this system. Through determining the dye reduction potential, dye reduction rate, ferrous ion conversion rate and so on, the influencing mechanism of indirect electrochemical reduction dyeing effect of indigo dye is studied. Combined with single factor analysis, the effects of concentrations of ferrous sulfate, sodium gluconate, Abai B, sodium hydroxide on the system performanee of indirect electrochemical reduction of indigo dye are explored. Compared with the traditional sodium hydrosulfite dyeing process, the K/S value of cotton fabric dyed with the optimized reduction dyeing process increases by 6.14%, and the color fastnesses are basically consistent with the traditional dyeing process. Excellent dyeing depth can be maintained within 5 dyeing cycles.