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A low temperature weak damage dyeing process for wool

A wool and low-temperature technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of dye uptake rate, reduction of color fixation rate, influence on fiber handle, gloss, vividness, temperature rise, etc., and achieve elongation at break and Increased moisture regain, reduced wool fiber damage, and reduced production costs

Active Publication Date: 2022-04-01
JIANGSU DANMAO TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be known from dyeing thermodynamics that under the same dye dosage and process conditions, the dyeing rate and fixation rate of the dye will decrease as the temperature rises.
This kind of long-term high-temperature boiling dyeing not only consumes a lot of energy and has a mediocre dyeing effect, but also greatly damages the scale structure of the wool fiber surface, damages the strength of wool, causes wool to turn yellow, affects the feel, luster, and vividness of the fiber, and damages the wool. excellent natural quality

Method used

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  • A low temperature weak damage dyeing process for wool
  • A low temperature weak damage dyeing process for wool
  • A low temperature weak damage dyeing process for wool

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Wool Raw Material Indicators:

[0030] 70s Australian wool strips;

[0031] Selection and dosage of dyes and auxiliaries:

[0032] Reactive dyes for wool Black ARC, concentration 2.5% (owf); Navy blue ARC-B01, concentration 0.5% (owf);

[0033] Main auxiliary parameters:

[0034] The concentration of formic acid is 2%; the dosage of Yuanming powder is 2% (owf); the dosage of hydrogen peroxide is 15% (owf); the MTG enzyme is 5% (owf).

[0035] A low-temperature and weak-damage dyeing process for wool, such as figure 1 As shown, proceed according to the following process steps:

[0036] (1) Pre-treatment: Put the wool ball into the washing machine, add 2% (owf) washing liquid and adjust the pH to 7.5, and keep the water temperature at 55°C for 10 minutes. After washing, dry the wool quickly, and put it into the dyeing vat for water to keep the water circulation system running normally;

[0037] (2) Hydrogen peroxide-formic acid oxidation pretreatment: heat up ...

Embodiment 2

[0048] Wool Raw Material Indicators:

[0049] 70s Australian preshrunk wool strips

[0050] Selection and dosage of dyes and auxiliaries:

[0051] Reactive dyes for wool Black ARC, concentration 2.5% (owf); Navy blue ARC-B01, concentration 0.5% (owf);

[0052] Main auxiliary parameters:

[0053] The concentration of formic acid is 2%; the dosage of Yuanming powder is 2% (owf); the dosage of hydrogen peroxide is 15% (owf); the MTG enzyme is 5% (owf).

[0054] A low-temperature and weak-damage dyeing process for wool, such as figure 1 As shown, proceed according to the following process steps:

[0055](1) Pre-treatment: Put the wool ball into the washing machine, add 2% (owf) washing liquid and adjust the pH to 7.5, and keep the water temperature at 55°C for 10 minutes. After washing, dry the wool quickly, and put it into the dyeing vat for water to keep the water circulation system running normally;

[0056] (2) Hydrogen peroxide-formic acid oxidation pretreatment: ...

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Abstract

The present invention relates to the field of textile technology. The present invention provides a low-temperature and weak-damage dyeing process for wool, which is carried out according to the following process steps: (1) pretreatment; (2) hydrogen peroxide-formic acid oxidation pretreatment; (3) dyeing; (4) unloading (5) Alkali color fixing treatment; (6) Soaping; (7) Water washing; (8) Restoration treatment, out of the tank. The beneficial effects of the present invention are: 1) Through the triple swelling synergistic effect of formic acid-hydrogen peroxide oxidation system, pressure dyeing, and transglutaminase repair, low-temperature dyeing can be realized and wool fiber damage can be reduced, and the dyeing temperature can be dyed at 75-80°C , the dyeing time is shortened by 30%-35%, avoiding the yellowing problem caused by high temperature and long-term boiling of wool; 2) Through the process of the present invention, the dyeing rate and color fastness are both increased by 5%-6% compared with traditional dyeing methods, and the fiber The strength, elongation at break and moisture regain are all greatly improved, which greatly reduces the amount of dyes used and reduces the production cost of the enterprise.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a low-temperature weak-damage dyeing process for wool. Background technique [0002] Wool fiber, in the traditional dyeing process, there is a hydrophobic dense scale layer on its surface that hinders the adsorption, penetration and diffusion of wool dye molecules into the fiber, especially for dyes with low affinity, the concentration of residual dye is high, and sewage treatment It is difficult, so wool dyeing must be completed under high temperature conditions for a long time, and co-bath dyeing with multi-component auxiliaries. However, it can be known from dyeing thermodynamics that under the same dye dosage and process conditions, the dyeing rate and fixation rate of the dye will decrease as the temperature rises. This kind of long-term high-temperature boiling dyeing not only consumes a lot of energy and has a mediocre dyeing effect, but also greatly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/14D06P1/44D06P1/673D06P5/06D06P5/10D06P5/20
CPCD06P3/14D06P1/445D06P1/673D06P5/2055D06P5/10D06P5/06
Inventor 杨德明庄伟华符爱芬俞金林王荣周新忠陈新华孙晓霞
Owner JIANGSU DANMAO TEXTILE
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