Salt-free dyeing technology adopting ethyl alcohol

A salt-free dyeing and ethanol technology, applied in the field of textile dyeing, can solve the problems of high wool dyeing temperature, uneven wool dyeing, and difficulty in wetting the dye liquor, and achieve the effects of improving dyeing performance, saving water and shortening dyeing time.

Pending Publication Date: 2019-09-03
SHANDONG JINING RUYI WOOLEN TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] wool fiber dyeing

[0030] Adopt a kind of ethanol salt-free dyeing process of the present invention to carry out wool fiber dyeing

[0031] (1) Pretreatment: Wash the wool fiber with organic solution and water in turn, and dry; the organic solution is made of the following components by weight: ethanolamine 0.32mol / L, temperature 55°C, bath ratio 1:50, time 35min . If the concentration of pretreated ethanolamine is too high, the dye uptake rate of low temperature dyeing of wool will be significantly affected, and the wool may have yellowing phenomenon. The pretreatment temperature should not be too high, and the time should not be too long, otherwise it will affect the performance of wool.

[0032] (2) Dye liquor preparation: the dye dissolving agent (water) that accounts for 8% by weight of the dyed object is mixed with the ethanol solution that accounts for 92% by weight of the dyed object, without using inorganic salts, and the mass percent concentration of the et...

Embodiment 2

[0038] wool fabric dyeing

[0039] Adopt a kind of ethanol salt-free dyeing process of the present invention to carry out wool fiber dyeing

[0040] (1) Pretreatment: Wash the wool fabric with organic solution and water in turn, and dry; the organic solution is made of the following components by weight: ethanolamine 0.35mol / L, temperature 55°C, bath ratio 1:50, time 35min . If the concentration of pretreated ethanolamine is too high, the dye uptake rate of low temperature dyeing of wool will be significantly affected, and the wool may have yellowing phenomenon. The pretreatment temperature should not be too high, and the time should not be too long, otherwise it will affect the performance of wool.

[0041] (2) Dye liquor preparation: the dye dissolving agent that accounts for 5% by weight of the dyed object is mixed with the ethanol solution that accounts for 95% by weight of the dyed object, and no inorganic salts are used. The mass percentage concentration of the ethanol...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/645D06P3/14D06P5/20
CPCD06P1/38D06P1/645D06P3/148D06P5/002D06P5/20
Inventor 丁彩玲秦光尹晓品金帅陈青丁翠侠杨爱国赵辉孔健张孟龙申瑞青刘美朋郭娟
Owner SHANDONG JINING RUYI WOOLEN TEXTILE CO LTD
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