活性染料染色低水介质皂洗的可行性研究

Study on feasibility of soaping for reactive dyeing using low-water medium

使用十甲基环五硅氧烷(D5)作为活性染料染色的皂洗介质对染色织物进行皂洗试验,能够大幅度减少皂洗工艺中的用水量和废水排放,并可作为以D5为介质的活性染料非水介质染色技术的配套工艺,实现染色新技术的完整性。以皂洗后样品的水浴萃取液染料质量浓度为主要评价指标对皂洗剂种类与用量、水的用量、温度及时间进行优选,最终确定使用D5为介质皂洗活性染料/D5悬浮体系染色织物的工艺:十八烷基胺聚氧乙烯醚双季铵1.5 g/L,D5浴比1∶50,水的用量为3倍织物质量,时间10 min,温度95℃。比较具有相同染色K/S值的水浴染色试样的水浴皂洗效果和D5染色试样的D5皂洗效果发现,二者的皂洗效率相近,洗后织物的色牢度指标可以满足一般纺织品色牢度要求。

Using decamethyl cyclopentasilaxane （D5） as soaping medium for reactive dyeing can significantly reduce water consumption and wastewater discharge in soaping process and be a matching process for the novel reactive dyeing technology in dye/D5 suspension system.Taking the dye concentration of water extraction liquid of the soaped sample as the evaluating index,the conditions such as the type and amount of soaping agent,the amount of water,temperature and time were optimized by single factor tests.The results showed that the optimal D5 soaping process of cotton fabric dyed in Reactive Dye / D5 system was：N-polyoxyethylated-N-octadecylamine 1.5 g/L,D5 bath ratio 1 ∶ 50,water amount of three times of fabric weight,time 10 min,and temperature 95 ℃.Compared the soaping efficiency of water dyed and water soaped samples and D5 dyed and D5 soaped samples with the similar color depth （K/S value）,both reached the similar levels,and the color fastness can meet the general requirement.