Homochromatic dyeing process of wool/silk blended fabric

Abstract

The invention provides a homochromatic dyeing process of wool / silk blended fabric, which comprises the following steps: A)washing fabric; B)dyeing: placing the washed fabric in a dyeing machine, adding 1-2%owf leveling agent, adding 1-3%owf vinyl sulfone double-reactive-group dye for dyeing, wherein bath ratio is 1: 10-30, controlling the pH value at 5-7 during a dyeing process; wherein the dyeing temperature is 80-90 DEG C, and the dyeing time is 80-100 minutes; C)fixing color: washing water with temperature of 50 DEG C on the dyed fabric, adding 3-5%owf fixing agent, immersing for 30-50 minutes under normal temperature; and D)drying. The homochromatic dyeing process has the advantages of good homochromatic property of blended fabric and good color fasteness, the fastness of soaping and dry friction can reach more than grade four, moisture friction fastness can reach more than grade 3, and the discharge capacity of the dyeing waste water can be greatly reduced.

Description

technical field [0001] The invention relates to a fabric dyeing process, in particular to a same-color dyeing process for wool / silk blended fabrics. Background technique [0002] Wool is an important natural fiber, which is widely used in high-grade textile fabrics. However, wool fiber has complex physical and chemical structures, and its surface layer has a hydrophobic scale layer structure, which is extremely unfavorable to the adsorption and dyeing of dye molecules, and at the same time prevents dyes from Diffusion into the fiber. Silk and wool are both protein fibers, but their chemical and physical structures and properties are quite different. Therefore, the dyeing performance of silk and wool fabrics is different from that of pure wool fabrics and silk fabrics, and the dyeing process has certain particularities. From the perspective of the structure of silk and wool, they are all natural protein fibers, and the molecules contain polar groups such as amino, carboxyl,...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the defects in the existing one-bath dyeing process of wool / silk blended fabrics, such as complex procedures, high dyeing cost, large color difference, low color fastness, and large amount of dyeing wastewater.