涤/氨针织物的高牢度染色还原清洗工艺

Reduction clearing process of polyester/polyurethane knitted fabric with high fastness dyeing

涤/氨针织物采用高牢度分散染料染色,探讨了不同还原清洗工艺对色牢度及色光的影响。结果发现:玫红色染料即使不经过还原清洗,色牢度也可达到4~5级;艳蓝色浮色较少,还原清洗前后色光稳定;湖蓝色、金黄色、酱红色色牢度较差,需要还原清洗。提高还原清洗温度或增加还原清洗次数,有利于提高织物的色牢度,但同时织物的得色深度及色光变化较大,需要平衡色牢度和色光间的指标要求。

Polyester/polyurethane knitted fabric is dyed with high fastness disperse dyes.The effects of differ⁃ent reduction clearing processes on color fastness and shade are discussed.The results show that the color fastness of fabric in rose red dye can reach Grade 4~5 even without reduction clearing process.The bright blue dyeings have less loose color,and the shade is stable before and after reduction clearing process.The color fastnesses of fabric in lake blue,golden yellow and sauce red is poor,which need reduction clearing.The color fastness of the fabric can be improved by heating or increasing the times of reduction clearing.However,the color depth and shade of the fabric change greatly,so it is necessary to balance the index requirements be⁃tween color fastness and shade.