分散染料染色涤纶针织面料的褪色研究

Decoloring Property of Polyester Knitting Fabric Dyed with Disperse Dye

文中依次采用溶胀褪色、剥色褪色和还原清洗褪色的方法,对分散染料染色的涤纶针织面料进行多重褪色研究。探讨了溶胀褪色、剥色褪色和还原清洗褪色处理条件对织物褪色率和强力保留率的影响。结果表明,二甲基亚砜溶胀褪色的最佳条件为浴比1∶16,温度120℃和时间30 min;N,N-二甲基甲酰胺剥色褪色的最佳条件为浴比1∶14,温度100℃和时间30 min;保险粉还原清洗剥色效果可以忽略不计。经二甲基亚砜溶胀褪色和N,N-二甲基甲酰胺剥色褪色处理后,褪色率高达97.8%,且断裂强力保留率为94.3%,符合涤纶针织面料褪色复染的要求。

This paper studied the multiple fading on polyester knitted fabrics dyed with disperse dyes by swelling,decolorization,and reduction washing to strip color.The influence of the treating conditions of swelling,decolorization,and reduction washing on the fading rate and strength retention rate was discussed.The results show that the optimum conditions for the dimethyl sulfoxide swelling are liquor ratio of 1∶16,temperature at 120℃,and time for 30 minutes.The optimum conditions for the N,N-dimethylformamide decolorization are liquor ratio of 1∶14,temperature at 100℃,and time for 30 minutes.The stripping effect of reduction washing of the sodium hydrosulfite is negligible.After treatment of the dimethyl sulfoxide swelling and N,N-dimethylformamide decolorization,the fading rate is up to 97.8%,and the breaking strength retention rate only reduces to 94.3%,which meet the repeating dyeing requirement of the polyester knitting fabric.