Washing-free continuous dyeing method of terylene fabric with disperse dyes

Abstract

The invention relates to a washing-free continuous dyeing method for polyester fabrics with disperse dyes. The invention mixes disperse dyes, surfactants and water and grinds them uniformly to obtain disperse dye slurry; then dilutes with water, and adds emulsified paste and Thickening agent to obtain liquid disperse dyes; add water to obtain disperse dye dyeing baths, padding polyester fabrics for dyeing, then drying, and then baking to fix the color, and finally drop the cloth to cool, and the dyeing is completed. The dyeing process of the invention is simple, the chemicals used are ecological and environment-friendly, the production efficiency is high, no dyeing waste water is discharged, energy is saved, and the invention has important practical significance for energy saving and emission reduction. The dye uptake rate of the dyed product obtained by the present invention is higher than 95%, the chemical content on the fabric is not more than 3%, the dyed fabric does not need to be washed, and the dry and wet rubbing fastness and staining fastness can reach 4-5 grades. The color fastness to fading is grade 5, meeting the quality requirements for textile dyeing.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing, in particular to a washing-free continuous dyeing method for polyester fabric with disperse dyes. Background technique [0002] Pure polyester fabrics are generally dyed by high-temperature and high-pressure exhaust dyeing, which has the problems of long dyeing time, low production efficiency, large electricity and steam consumption, and high sewage discharge. In addition, in the actual dyeing process, it is necessary to add a large amount of auxiliary agents such as dispersants, resulting in serious chroma pollution and more COD emissions. Similarly, the adsorption and solubilization of the auxiliary agent on the fiber surface leads to the adsorption and solubilization of the dye on the fiber surface, and also leads to the accumulation of the dye on the fiber surface. With the help of complex post-washing, including reduction cleaning and soaping, etc., to fully remove these floating col...

AI Technical Summary

Problems solved by technology

[0002] Pure polyester fabrics are generally dyed by high-temperature and high-pressure exhaust dyeing, which has the problems of long dyeing time, low production efficiency, large electricity and steam consumption, and high sewage discharge.

In addition, in the actual dyeing process, a large amount of dispersant and other auxiliary agents need to be added, resulting in serious chroma pollution and more COD emissions

Similarly, the adsorption and solubilization of the auxiliary agent on the fiber surface leads to the adsorption and solubilization of the dye on the fiber surface, and also leads to the accumulation of the dye on the fiber surface. With the help of complex post-washing, including reduction cleaning and soaping, etc., to fully remove these floating colors and give dyed fabrics sufficient color fastness performance, multiple post-washing will consume a lot of water, energy and a considerable amount of chemicals , causing serious pollution to the environment