Salt-free rolling, baking, dying and low-temperature soaping method for fiber reactive dyes

Abstract

The invention discloses a salt-free rolling, baking, dying and low-temperature soaping method for fiber reactive dyes. The method includes the steps as follows: treating fiber fabric with quaternary ammonium of polyenoid polyamines, padding dyes, pre-baking by adopting infrared rays to lead the moisture percentage of the fiber to be 20-50%, drying at the temperature of 80-120 DEG C so as to lead the moisture percentage of the fiber to be 0-20%, baking in the temperature of 100-200 DEG C for 0.5-3 minutes, washing with cold water, soaping at the temperature of 60-80 DEG C, washing with hot water of 40-60 DEG C, washing with cold water, drying at the temperature of 80-120 DEG C, and then conducting soft finishing and shaping, thus obtaining dyed fabric of modified fibers. The salt-free rolling, baking, dying and low-temperature soaping method for fiber reactive dyes is simple in technology, does not need other chemical auxiliaries except soaping agent, has high utilization rate of dyes, saves water, reduces the usage of vapor, saves energy and reduces emission, lowers cost greatly and has significance to the improvement on the problems of pollution and energy consumption of dyeing.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, in particular to a method for salt-free pad-baking dyeing and low-temperature soaping of fiber reactive dyes. Background technique [0002] Dyeing with reactive dyes has always had the problem of low fixation rate. After a lot of research, it can only reach 70-80%, and a few dyes are even lower. At the same time, when dyeing cotton fibers, it is necessary to add a large amount of inorganic salts to promote dyeing. , for pad dyeing, the amount of salt can reach 150-200g / L, the low dyeing fixation rate and the use of a large amount of inorganic salts have brought serious salinization and pollution to the surrounding water quality, and seriously damaged the ecological environment. At present, the printing and dyeing industry needs to use a large amount of chemicals, and the complicated process has caused high pollution and high energy consumption in the industry. How to reduce the amount...

AI Technical Summary

Problems solved by technology

[0002] Dyeing with reactive dyes has always had the problem of low fixation rate. After a lot of research, it can only reach 70-80%, and a few dyes are even lower. At the same time, when dyeing cotton fibers, it is necessary to add a large amount of inorganic salts to promote dyeing. , for pad dyeing, the amount of salt can reach 150-200g / L, the low dyeing fixation rate and the use of a large amount of inorganic salts have brought serious salinization and pollution to the surrounding water quality, and seriously damaged the ecological environment. At present, the printing and dyeing industry needs to use a large amount of chemicals, and the complicated process has caused high pollution and high energy consumption in the industry. How to reduce the amount of chemicals used and energy consumption is a major issue for the sustainable development of the printing and dyeing industry

[0003] In order to solve this problem, since a French company developed a quaternary ammonium salt cationic compound called Giytaica for dyeing reactive dyes in 1976, researchers have spent a lot of energy and time to perfect this process, but none of them have achieved industrial production. , only apply this kind of products to pigment dyeing and printing process

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