CN111287006A - Low-temperature weak-damage dyeing process for wool - Google Patents
Low-temperature weak-damage dyeing process for wool Download PDFInfo
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/14—Wool
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/06—After-treatment with organic compounds containing nitrogen
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/10—After-treatment with compounds containing metal
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2044—Textile treatments at a pression higher than 1 atm
- D06P5/2055—Textile treatments at a pression higher than 1 atm during dyeing
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Abstract
The invention relates to the technical field of spinning, and provides a low-temperature weak damage dyeing process for wool, which is carried out according to the following process steps: (1) pre-treating; (2) hydrogen peroxide-formic acid oxidation pretreatment; (3) dyeing; (4) pressure relief; (5) alkali color fixation treatment; (6) soaping; (7) washing with water; (8) and (6) repairing and taking out of the cylinder. The invention has the beneficial effects that: 1) through a formic acid-hydrogen peroxide oxidation system, dyeing under pressure and a synergistic swelling effect of glutamine transaminase restoration, low-temperature dyeing can be realized, wool fiber damage is reduced, dyeing can be carried out at a dyeing temperature of 75-80 ℃, the dyeing time is shortened by 30-35%, and the problem of yellowing of wool caused by high-temperature long-time boiling dyeing is avoided; 2) by the process, the dye-uptake and the dye fastness are improved by 5-6% compared with the traditional dyeing method, the fiber strength, the elongation at break and the moisture regain are improved to a large extent, the dye consumption is greatly reduced, and the production cost of enterprises is reduced.
Description
Technical Field
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
In the traditional dyeing process of wool fibers, a hydrophobic compact scale layer exists on the surface of the wool fibers to prevent the adsorption, permeation and diffusion of wool dye molecules to the interior of the fibers, and particularly, a dye with low affinity is high in residual liquid dye concentration and difficult in sewage treatment, so that wool dyeing can be finished by using a co-bath dyeing method with a multi-component auxiliary agent under a long-time high-temperature condition. However, as seen from dyeing thermodynamics, the dye uptake rate and the fixation rate are reduced when the temperature is increased under the same dye dosage and process conditions. The long-time high-temperature boiling dyeing has large energy consumption and common dyeing effect, can greatly destroy the scale structure on the surface of wool fibers, damage the strength of the wool, cause yellowing of the wool, influence the hand feeling, the gloss and the brightness of the fibers and destroy the excellent natural quality of the wool.
The low-damage dyeing of the wool can effectively reduce the use of dyes and chemical additives on the premise of improving the dyeing percentage and the dyeing fastness of the wool, and simultaneously reduce the damage to the strength, the breaking elongation and the friction coefficient of wool fibers and improve the yield of the wool, so that the low-temperature dyeing method of the wool has important significance in researching and popularizing.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a low-temperature weak damage dyeing process for wool, which comprises the steps of pretreating wool by using a hydrogen peroxide-formic acid system before the traditional wool dyeing process, improving the swelling degree of wool fibers and weakening the resistance of hydrophobic scales of the wool, then improving the air pressure of a dye vat in the dyeing process, further improving the swelling degree of the fibers, promoting the penetration degree and inward diffusion speed of dye on the fibers, and finally repairing the damaged fibers by glutamine transaminase to obtain a wool semi-product with small strength damage and good dyeing performance. The method is adopted to dye wool fibers, the dyeing temperature can be 75-80 ℃, the dyeing time is shortened by 30-35%, and the yellowing problem caused by the boiling dyeing of the wool at high temperature for a long time is avoided; and the dye-uptake and the dye fastness are both improved by 5 percent to 6 percent compared with the traditional dyeing method, and the fiber strength, the elongation at break and the moisture regain are all improved to a great extent.
The object of the invention can be achieved by the following technical solution.
A low-temperature weak damage dyeing process for wool is carried out according to the following process steps:
(1) pretreatment: preparing a cleaning solution, adding 60% acetic acid to adjust the pH value of the cleaning solution, putting wool balls into the cleaning solution for cleaning, keeping the water temperature at 45-60 ℃, treating for 10-15min, quickly spin-drying, putting into a dye vat, and feeding water;
(2) hydrogen peroxide-formic acid oxidation pretreatment: heating to 38-43 ℃, sequentially adding hydrogen peroxide, dye and dyeing auxiliary agent, and adding formic acid to adjust the pH value of the dye solution; continuously heating to 65-70 deg.C, and keeping the temperature for 20-25 min;
(3) dyeing: filling steam into the dye vat, increasing the internal pressure of the dye vat, heating to 75-80 ℃, adding a small amount of formic acid to adjust the pH value of the dye solution, and keeping the temperature for 60-70 min;
(4) pressure relief: slowly releasing the pressure of the dye vat to normal pressure;
(5) alkali fixation treatment: cooling to 70-75 ℃, adding a certain amount of fixation alkali, and carrying out heat preservation treatment for a period of time; adding a detergent, adjusting the pH value of the treatment solution, and washing off the loose color on the surface of the wool fibers;
(6) soaping: cooling to 65-70 deg.C, adding a certain amount of soaping agent, and performing heat preservation and soaping for 1 time;
(7) washing with water: washing wool tops with tap water for 2-3 times until the residual liquid is clear and transparent;
(8) repairing and taking out of the cylinder: adding certain amount of bioremediation enzyme to prepare a remediation solution, heating to 65-70 ℃, adding 60% acetic acid to adjust the pH value of the treatment solution, preserving heat for 15-20min, and taking out of the jar.
Preferably, the temperature of the pretreatment process in the step (1) is 50-55 ℃, the dosage of the detergent is 2-2.5% (owf), and the PH is 7.5-7.8; the detergent adopts JSBE BE-260 wool detergent.
Preferably, the hydrogen peroxide amount in the hydrogen peroxide-formic acid oxidation pretreatment procedure in the step (2) is 12-15% (owf), the formic acid concentration is 1.5-3.5%, and the pH value of the adjusted dye solution is 5-5.5.
Preferably, the steam pressure of the dye vat of the dyeing process in the step (3) is 4.5-5kg/m2Keeping the temperature for 60-70min, wherein the concentration of the added formic acid is 1.5-3.5%, and the pH value of the adjusted dye solution is 5-6.
Preferably, the color fixing alkali dosage of the alkali color fixing treatment process in the step (5) is 1.5-2.5% (owf), and the heat preservation time is 10-15 min; the dosage of the detergent is 2-2.5% (owf), the pH value of the treatment solution is 7.5-7.8, and the treatment time is 45-60 s; the detergent adopts JSBE BE-260 wool detergent.
Preferably, the dosage of the soaping agent in the soaping process in the step (6) is 0.5-1% (owf), and the soaping time is 8-12 min; the soaping agent is Hensmei
WFE high-efficiency soaping agent.
Preferably, the single water washing time of the water washing process in the step (7) is 4-6 min.
Preferably, the bioremediation enzyme in the remediation treatment and cylinder removal process of step (8) is MTG protease, the dosage is 5-7% (owf), the PH of the treatment solution is 6.5-7.5, and the remediation treatment temperature is 65-70 ℃.
The invention has the beneficial effects that:
1) through a formic acid-hydrogen peroxide oxidation system, dyeing under pressure and a synergistic swelling effect of glutamine transaminase restoration, low-temperature dyeing can be realized, wool fiber damage is reduced, dyeing can be carried out at a dyeing temperature of 75-80 ℃, the dyeing time is shortened by 30-35%, and the problem of yellowing of wool caused by high-temperature long-time boiling dyeing is avoided;
2) by the process, the dye-uptake and the dye fastness are improved by 5-6% compared with the traditional dyeing method, the fiber strength, the elongation at break and the moisture regain are improved to a large extent, the dye consumption is greatly reduced, and the production cost of enterprises is reduced.
Drawings
FIG. 1 is a schematic view of a dyeing process of example 1;
FIG. 2 is a schematic view of the dyeing process of example 2.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1:
indexes of wool raw materials are as follows:
70s Australia wool tops;
selecting and using the following dyes and auxiliary agents:
the dye is selected from reactive dye for wool
Black ARC, concentration 2.5% (owf);
azure ARC-B01 at a concentration of 0.5% (owf);
the main auxiliary agent parameters are as follows:
the concentration of formic acid is 2 percent; the using amount of anhydrous sodium sulphate is 2 percent (owf); 15 percent of hydrogen peroxide (owf); MTG enzyme 5% (owf).
A low-temperature weak damage dyeing process for wool is shown in figure 1 and is carried out according to the following process steps:
(1) pretreatment: putting wool balls into a cleaning machine, adding 2% (owf) of cleaning solution, adjusting the pH to 7.5, and keeping the water temperature of 55 ℃ for cleaning for 10 min. After cleaning, the wool is quickly dried, and is put into a dye vat for water inlet, so that a water circulation system is kept to normally operate;
(2) hydrogen peroxide-formic acid oxidation pretreatment: heating to 40 ℃, sequentially adding hydrogen peroxide, dye and dyeing auxiliary agent, and adding formic acid to adjust the pH of the dye solution to 5; continuously heating to 70 ℃, and keeping the temperature for 20 min;
(3) dyeing: adding formic acid, regulating the dye liquor to 5, filling steam into the dye vat, and increasing the internal pressure of the dye vat to 4.8kg/m2Heating to 80 deg.C, and maintaining for 60 min;
(4) pressure relief: slowly releasing the pressure of the dye vat to normal pressure;
(5) alkali fixation treatment: cooling to 75 deg.C, adding fixation alkali, and keeping the temperature for 15 min; adding a detergent, adjusting the pH value to 7.5, and washing off the loose color on the surface of the wool fibers;
(6) soaping: heating to 70 ℃, adding 1% (owf) soaping agent for soaping for 1 time, wherein the soaping time is 10 min;
(7) washing with water: washing with water for 2 times, and 5min for a single time until the residual liquid is clear and transparent.
(8) Repairing and taking out of the cylinder: the temperature is raised to 70 ℃, 5% (owf) MTG enzyme is added, the PH is adjusted to 7, and the heat preservation treatment is carried out for 15 min.
Dyeing and evaluating various mechanical properties:
from the data in the table, the low-temperature weak damage dyeing process of the 70s common wool is greatly improved in dye-uptake percentage, dyeing fastness and the like compared with the traditional dyeing process and low-temperature low-pressure dyeing; the fiber strength is improved by about 10%, the breaking elongation is improved by about 2%, and the moisture regain is improved by about 2%.
Example 2:
indexes of wool raw materials are as follows:
70s Australia shrink-proof wool top
Selecting and using the following dyes and auxiliary agents:
the dye is selected from reactive dye for wool
Black ARC, concentration 2.5% (owf);
azure ARC-B01 at a concentration of 0.5% (owf);
the main auxiliary agent parameters are as follows:
the concentration of formic acid is 2 percent; the using amount of anhydrous sodium sulphate is 2 percent (owf); 15 percent of hydrogen peroxide (owf); MTG enzyme 5% (owf).
A low-temperature weak damage dyeing process for wool is shown in figure 1 and is carried out according to the following process steps:
(1) pretreatment: putting wool balls into a cleaning machine, adding 2% (owf) of cleaning solution, adjusting the pH to 7.5, and keeping the water temperature of 55 ℃ for cleaning for 10 min. After cleaning, the wool is quickly dried, and is put into a dye vat for water inlet, so that a water circulation system is kept to normally operate;
(2) hydrogen peroxide-formic acid oxidation pretreatment: heating to 40 ℃, sequentially adding hydrogen peroxide, dye and dyeing auxiliary agent, and adding formic acid to adjust the pH of the dye solution to 5; continuously heating to 70 ℃, and keeping the temperature for 20 min;
(3) dyeing: adding formic acid, regulating the dye liquor to 5, filling steam into the dye vat, and increasing the internal pressure of the dye vat to 4.8kg/m2Heating to 80 deg.C, and maintaining for 60 min;
(4) pressure relief: slowly releasing the pressure of the dye vat to normal pressure;
(5) alkali fixation treatment: cooling to 75 deg.C, adding fixation alkali, and keeping the temperature for 15 min; adding a detergent, adjusting the pH value to 7.5, and washing off the loose color on the surface of the wool fibers;
(6) soaping: heating to 70 ℃, adding 1% (owf) soaping agent for soaping for 1 time, wherein the soaping time is 10 min;
(7) washing with water: washing with water for 2 times, and 5min for a single time until the residual liquid is clear and transparent.
(8) Repairing and taking out of the cylinder: the temperature is raised to 70 ℃, 5% (owf) MTG enzyme is added, the PH is adjusted to 7, and the heat preservation treatment is carried out for 15 min.
Dyeing and evaluating various mechanical properties:
from the data in the table, the low-temperature weak damage dyeing process of the 70s shrink-proof wool is greatly improved in dye-uptake percentage, dye fastness and the like compared with the traditional dyeing process and low-temperature auxiliary agent dyeing; the fiber strength is improved by about 10%, the breaking elongation is improved by about 2%, and the moisture regain is improved by about 2%.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The low-temperature weak damage dyeing process for wool is characterized by comprising the following steps of:
pretreatment: preparing a cleaning solution, adding 60% acetic acid to adjust the pH value of the cleaning solution, putting wool balls into the cleaning solution for cleaning, keeping the water temperature at 45-60 ℃, treating for 10-15min, quickly spin-drying, putting into a dye vat, and feeding water;
(2) hydrogen peroxide-formic acid oxidation pretreatment: heating to 38-43 ℃, sequentially adding hydrogen peroxide, dye and dyeing auxiliary agent, and adding formic acid to adjust the pH value of the dye solution; continuously heating to 65-70 deg.C, and keeping the temperature for 20-25 min;
(3) dyeing: filling steam into the dye vat, increasing the internal pressure of the dye vat, heating to 75-80 ℃, adding a small amount of formic acid to adjust the pH value of the dye solution, and keeping the temperature for 60-70 min;
(4) pressure relief: slowly releasing the pressure of the dye vat to normal pressure;
(5) alkali fixation treatment: cooling to 70-75 ℃, adding a certain amount of fixation alkali, and carrying out heat preservation treatment for a period of time; adding a detergent, adjusting the pH value of the treatment solution, and washing off the loose color on the surface of the wool fibers;
(6) soaping: cooling to 65-70 deg.C, adding a certain amount of soaping agent, and performing heat preservation and soaping for 1 time;
(7) washing with water: washing wool tops with tap water for 2-3 times until the residual liquid is clear and transparent;
(8) repairing and taking out of the cylinder: adding certain amount of bioremediation enzyme to prepare a remediation solution, heating to 65-70 ℃, adding 60% acetic acid to adjust the pH value of the treatment solution, preserving heat for 15-20min, and taking out of the jar.
2. The low-temperature weak damage dyeing process of wool according to claim 1, characterized in that the temperature of the pretreatment process in the step (1) is 50-55 ℃, the dosage of the detergent is 2-2.5% (owf), the pH value is 7.5-7.8, and the detergent is JSBEBE-260 wool detergent.
3. The low-temperature weak damage dyeing process for wool according to claim 1, characterized in that the hydrogen peroxide amount in the hydrogen peroxide-formic acid oxidation pretreatment process in the step (2) is 12-15% (owf), the formic acid concentration is 1.5-3.5%, and the pH value of the dye solution after adjustment is 5-5.5.
4. The low-temperature weak damage dyeing process for wool according to claim 1, characterized in that the dye vat steam pressure of the dyeing process in step (3) is 4.5-5kg/m, the heat preservation time is 60-70min, the additional formic acid concentration is 1.5% -3.5%, and the adjusted PH value of the dye solution is 5-6.
5. The low-temperature weak damage dyeing process of wool according to claim 1, characterized in that the fixation alkali dosage of the alkali fixation treatment process in the step (5) is 1.5-2.5% (owf), and the holding time is 10-15 min; the dosage of the detergent is 2-2.5% (owf), the pH value of the treatment solution is 7.5-7.8, and the treatment time is 45-60 s; the detergent adopts JSBE BE-260 wool detergent.
6. The low-temperature weak damage dyeing process for wool according to claim 1, characterized in that the soaping agent dosage of the soaping process in the step (6) is 0.5-1% (owf), and the soaping time is 8-12 min; the soaping agent is a Hunsmy ERIOPON WFE high-efficiency soaping agent.
7. The low-temperature weak damage dyeing process for wool according to claim 1, characterized in that the single washing time of the washing process in step (7) is 4-6 min.
8. The low-temperature weak damage dyeing process for wool according to claim 1, characterized in that the bioremediation enzyme for the restoration treatment and out-of-cylinder process in step (8) is MTG protease, the dosage is 5-7% (owf), the pH =6.5-7.5 of the treatment solution, and the restoration treatment temperature is 65-70 ℃.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123138A (en) * | 2021-05-26 | 2021-07-16 | 帕罗羊绒制品有限公司 | Enzyme treatment cashmere fiber dyeing process |
| CN113564942A (en) * | 2021-07-28 | 2021-10-29 | 武汉纺织大学 | Continuous processing method for improving dyeing performance of wool fabric |
| CN113668268A (en) * | 2021-09-13 | 2021-11-19 | 张家港扬子染整有限公司 | Dyeing process of superfine wool dark black wool tops |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242502A (en) * | 2011-04-14 | 2011-11-16 | 太原理工大学 | Low-temperature dyeing method for antibacterial wool fiber |
| CN104195851A (en) * | 2014-08-14 | 2014-12-10 | 江苏箭鹿毛纺股份有限公司 | Low-temperature dyeing assistant for wools |
-
2018
- 2018-12-06 CN CN201811492099.6A patent/CN111287006B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242502A (en) * | 2011-04-14 | 2011-11-16 | 太原理工大学 | Low-temperature dyeing method for antibacterial wool fiber |
| CN104195851A (en) * | 2014-08-14 | 2014-12-10 | 江苏箭鹿毛纺股份有限公司 | Low-temperature dyeing assistant for wools |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123138A (en) * | 2021-05-26 | 2021-07-16 | 帕罗羊绒制品有限公司 | Enzyme treatment cashmere fiber dyeing process |
| CN113564942A (en) * | 2021-07-28 | 2021-10-29 | 武汉纺织大学 | Continuous processing method for improving dyeing performance of wool fabric |
| CN113668268A (en) * | 2021-09-13 | 2021-11-19 | 张家港扬子染整有限公司 | Dyeing process of superfine wool dark black wool tops |
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