涤/棉织物微胶囊分散染料/中性固色活性染料一浴法染色

One-bath dyeing of polyester/cotton blend with microencapsulated disperse/neutral fixation reactive dyes

采用微胶囊分散染料和中性固色活性染料一浴法对涤/棉模拟交织物染色,分析了微胶囊分散染料对棉织物、中性固色活性染料对涤纶的沾色,探讨了染色温度、染色时间、染色pH、氯化钠用量等对染色性能的影响,测试了染色织物的色牢度.研究结果表明:中性固色活性染料对涤纶织物的沾色以及微胶囊分散染料对棉织物的沾色均较少,随着氯化钠用量的增加,染色棉织物的表观色深逐渐增加,而涤纶织物的表观色深有所下降.中深色染色的最佳工艺条件为:加入一定比例的中性固色活性染料和微胶囊分散染料,染色pH=7,染色温度130℃,保温时间60 min,氯化钠用量40 g/L左右,涤/棉混纺织物用微胶囊分散染料/中性固色活性染料染色后,各项色牢度均满足服用要求.

The microencapsulated disperse dyes and neutral fixation reactive dyes were applied in one-bath dyeing of polyester/cotton blend.The stain performance of neutral fixation reactive dyes on polyester and microencapsulated disperse dyes on cotton,the effects of dyeing temperature,time,pH,dosage of sodium chloride on dyeing behavior were analyzed.The color fastness of polyester/cotton blend fabrics dyed with neutral fixation reactive dyes and microencapsulated disperse dyes were tested.It was found that the neutral fixation reactive dyes stained less on polyester,and microencapsulated disperse dyes also stained less on cotton.The K/S value of dyed cotton fabric increased with the increasing of dosage of sodium chloride,but the K/S value of dyed polyester fabric decreased with the increasing of dosage of sodium chloride.The results showed that the optimal process was： addition neutral fixation reactive dyes and microencapsulated disperse dyes,Na Cl 40 g/L or so,dyeing at 130 ℃ for 60 min under pH=7,the color fastnesses of polyester/cotton blend fibers could meet the demand of wearability.