盐效应对活性染料染色性能的影响研究

Effect of salt effect on the dyeing properties of reactive dyes

根据活性染料特征值(SEFR值)选择了3类不同特征值的活性染料,其中各类选3种,共9种.分别对特征值高、中、低的3类染料进行盐效应应用,对比染色工艺试验,结果表明:SEFR值中等的一类染料适合进行低盐染色,其固色率均在70%左右,盐用量为常规用量的1/4～1/3,浴比为1∶10,而以m(无水硫酸钠)∶m(柠檬酸钠)=1∶2复配效果最佳.

According to the characteristic value SEFR of reactive dyes,three different types were chosen in the experiment.Each type included 3 kinds of dyes,altogether 9 kinds of dyes.Three types dyes whose characteristic values were high,middle and low were dyed for contrast dyeing experiments of salt effect application.The results showed that the dye with middle characteristic value SEFR was fit for low salt dyeing,and the fixation was about 70%.The salt dosage was 1/4～1/3 of conventional usage,and liquor ratio was 1∶10.The best result could be obtained using mixture of anhydrous sodium sulfate and sodium citrate at the mass ratio of 1∶2.