Salt-free dyeing technology adopting ethyl alcohol

Abstract

The invention relates to the technical field of dyeing of textiles, in particular to a salt-free dyeing technology adopting ethyl alcohol. The dyeing technology is used for dyeing wool fabrics, the salt-free dyeing technology under the ethyl alcohol system is adopted, and a dye dissolution agent accounting for 5%-10% of a to-be-dyed fabric by weight is mixed with an ethyl alcohol solution accounting for 90%-95% of the to-be-dyed fabric by weight; the ethyl alcohol is taken as a dyeing carrier and used for dye conveying and energy transmission, the dye dissolution agent is used for dissolving dye, and the dissolved dye and the ethyl alcohol jointly form a dyeing solution; during dyeing, salt does not need to be added, ultraviolet radiation treatment is adopted, quick dyeing can be achieved,and 5% of water can be used as the dye dissolution agent. By means of the method, the application amount of the water and the salt can be significantly reduced, compared with a traditional technology, the application amount of water for dyeing is reduced by 90%-95%, the ethyl alcohol is recycled, and zero-discharge of dyeing is basically achieved; the dyeing time is shortened by 50%, the dyeing temperature is reduced by 10-20 DEG C, the energy is saved by 30% or above, and the sewage problem of the textile industry is solved by adopting the zero-discharge scheme.

Description

technical field [0001] The invention relates to the technical field of textile dyeing, in particular to an ethanol salt-free dyeing process. Background technique [0002] For dyeing in conventional water systems, water is used to dissolve dyes and chemicals, and at the same time as a carrier to provide a dye bath environment and transport dyes and chemicals, salt plays the role of promoting dyeing and color fixation. [0003] Wool fabric is loved by people for its excellent elasticity, moisture absorption and warmth retention. The surface of wool is hydrophobic, and the dyeing solution is not easy to wet and dye. Due to the poor color fixing effect, the dye concentration in the dyeing residue is high and the pollution is serious. . [0004] In practical industrial applications, wool dyeing temperature is high, dyeing time is long, energy consumption is high, fiber damage is large, and wool dyeing is uneven. Therefore, how to improve the dyeing rate of wool fabrics, shorten ...

AI Technical Summary

Problems solved by technology

[0003] Wool fabric is loved by people for its excellent elasticity, moisture absorption and warmth retention. The surface of wool is hydrophobic, and the dyeing solution is not easy to wet and dye. Due to the poor color fixing effect, the dye concentration in the dyeing residue is high and the pollution is serious.

[0004] In practical industrial applications, wool dyeing temperature is high, dyeing time is long, energy consumption is high, fiber damage is large, and wool dyeing is uneven. Therefore, how to improve the dyeing rate of wool fabrics, shorten dyeing time, reduce water consumption, and reduce Energy consumption is the technical problem to be solved in the present invention