阳离子改性棉织物的靛蓝染色

Indigo dyeing of cationic modified cotton fabric

为提高靛蓝染料对纯棉织物的染色深度,采用自制阳离子改性剂ZS对棉织物进行改性,讨论了改性剂和氢氧化钠用量、改性温度、改性时间等因素对保险粉或二氧化硫脲还原体系中靛蓝染色性能的影响。试验得到棉织物改性工艺参数为改性剂ZS 4 g/L,NaOH 1.0 g/L,改性温度70℃,改性时间40 min。棉织物改性后靛蓝染色K/S值最高可达到19.3,而未改性棉织物的染色K/S值仅为12.2,且改性后染色织物的耐洗色牢度、耐摩擦色牢度良好。棉织物经改性后靛蓝染色只需浸染-氧化3次就能达到常规6次浸染-氧化的染色深度。

Cotton fabric is modified with the selfmade cationic modifier ZS and then dyed with indigo dyes to improve dye depth. The influences of dosage of modifier and sodium hydroxide, modifying temperature and time on dyeing properties in so dium hydrosulfite and thiourea dioxide reduction system separately are discussed. The results indicate that modification process parameters for cotton fabric is cationic modifier ZS 4 g/L, NaOH 1.0 g/L,treating at 70 ℃ for 40 min. The K/S value of the modified cotton dyeings can reach 19.3, while the unmodified one is only 12.2, and the color fastness to soaping and rubbing are also good. The indigo dyeing of the modified cotton fabrics with 3 times dip dyeingoxidation will be able to achieve the dye ing depth of the conventional 6 times dip dyeingoxidation.