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Organic alkali dyeing method

A dyeing method and an organic base technology, applied in the dyeing field, can solve problems such as poor water solubility, more processes, easy agglomeration to block the feeding pipe, etc., and achieve the effect of reducing emissions and reducing processing costs

Inactive Publication Date: 2014-06-18
朱文潮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in actual production, the amount of soda ash is large, the water solubility is poor, and it is easy to agglomerate and block the feeding pipe, which brings inconvenience to the operation.
If the chemical material is not thorough, it will cause unevenness of the alkali, which will cause the yarn to have colored flowers, and often cause white spots due to the large amount of carbonate in the dyeing bath, which will affect the dyeing quality.
[0003] In order to prevent white spots caused by high carbonate content in the dyeing bath due to the large amount of soda ash used in the dyeing process, it is necessary to increase the post-treatment washing process after dyeing, which will result in a large amount of water, electricity, and gas.
And soda ash dyeing has a high COD discharge in the dyed wastewater, which seriously pollutes the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The organic alkali dyeing method that present embodiment describes, concrete implementation steps are as follows:

[0017] (1) Pretreatment process: place the wool yarn in the dyeing vat at room temperature, and soak it in reactive dyes, auxiliary agents, etc. for 20 minutes;

[0018] (2) Dyeing process: heat the pretreated wool yarn from normal temperature to 65°C, keep the heating rate at 0.7°C / min, and dye for 60min;

[0019] (3) Color fixing process: add organic base to fix the color, so that the concentration of the organic base is controlled at 2.0g / L, the process of adding the organic base should be slow and uniform, the time is controlled at about 30 minutes, and the heat preservation is 60 minutes;

[0020] (4) Soaping process: After the temperature drops to room temperature, drain the liquid and add soaping agent to clean for 15 minutes;

[0021] (5) Hot water washing process: wash at a water temperature of 90°C for 18 minutes;

[0022] (6) Neutralization pr...

Embodiment 2

[0026] The organic alkali dyeing method that present embodiment describes, concrete implementation steps are as follows:

[0027] (1) Pretreatment process: place the wool yarn in the dyeing vat at room temperature, and put in reactive dyes, auxiliary agents, etc. to soak for 30 minutes;

[0028] (2) Dyeing process: heat the pretreated wool yarn from room temperature to 70°C, keep the heating rate at 1°C / min, and dye for 50min;

[0029] (3) Color fixing process: Add organic base to fix the color, so that the concentration of organic base is controlled at 2.2g / L. The process of adding organic base should be slow and uniform, the time is controlled at about 30 minutes, and the heat preservation is 70 minutes;

[0030] (4) Soaping process: after the temperature drops to room temperature, drain the liquid and add soaping agent to clean for 12 minutes;

[0031] (5) Hot water washing process: wash for 15 minutes at a water temperature of 85°C;

[0032] (6) Neutralization process: S...

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PUM

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Abstract

The invention discloses a dyeing method, and particularly relates to an organic alkali dyeing method for a wool yarn. The method comprises the following steps: a pretreatment technology, a dyeing technology, a fixation technology, a soaping technology, a hot washing technology, a neutralizing technology, and a baking technology. According to the dyeing method disclosed by the invention, traditional inorganic bases, such as caustic soda and sodium carbonate, are replaced by organic bases, so that the safety coefficient of an active dye is effectively improved, the dyeing defect is not easily generated, the pH value in the dyeing process is stable, the possibility of chromatic aberration caused by pH value fluctuation of a dye bath is lowered, the wool yarn is good in hand feeling and vivid in color and luster, the dyeing defects of white spots, whiting and the like caused by incomplete cleaning are overcome, the dyeing quality is greatly improved, the chemical oxygen demand (COD) discharge of wastewater is further reduced, and the environmental pollution is small.

Description

technical field [0001] The invention discloses a dyeing method, in particular to an organic alkali dyeing method of wool yarn. Background technique [0002] At present, reactive dyes are mostly used in cellulose dyeing of printing and dyeing products, and cellulose is inactive in general neutral media. Only in alkaline media can it undergo nucleophilic substitution or addition reaction with dyes to start covalent bonding. And solid color. The color-fixing alkali agents commonly used in traditional crafts mainly include caustic soda, trisodium phosphate, sodium silicate, and soda ash. Among them, soda ash is used most in factories. But in actual production, the consumption of soda ash is very large, its water solubility is poor, and it is easy to agglomerate and block the feeding pipe, which brings inconvenience to the operation. If the chemical material is not thorough, it will cause unevenness of the alkali, which will cause the yarn to have colored flowers, and often ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06P1/38D06P5/06
Inventor 朱文潮
Owner 朱文潮
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