CN112626887A - Low-salt dyeing method of reactive dye - Google Patents
Low-salt dyeing method of reactive dye Download PDFInfo
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- CN112626887A CN112626887A CN202011522903.8A CN202011522903A CN112626887A CN 112626887 A CN112626887 A CN 112626887A CN 202011522903 A CN202011522903 A CN 202011522903A CN 112626887 A CN112626887 A CN 112626887A
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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
- D06P1/38—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 reactive dyes
-
- 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
-
- 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
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
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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
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses a low-salt dyeing method of reactive dye, which comprises the following steps: desizing cotton fabrics; blending a cotton fabric modification solution; modifying cotton fabrics; pretreating cotton fabrics; drying; dyeing cotton fabrics; washing cotton fabrics with water; the cotton fabric soaping, the drum-type scientific and technological veneer dryer with the adjustable interval reduces inorganic salt placed in the dyeing process when dyeing the cotton fabric, so that uncontrollable factors in the whole dyeing process are reduced, the product quality is more stable, the dyeing cost is lower, and the damage to the surrounding environment is minimized; the cloth is modified, the fixation rate of the modified cotton fabric is obviously improved when the cotton fabric is colored, the utilization rate of dye is obviously improved when the method is used for dyeing, the breaking capacity of a reticular structure formed on the surface of the fabric by the cross-linking agent is improved, and the fixation rate is further enhanced when the cotton fabric is dyed.
Description
Technical Field
The invention relates to the technical field of low-salt dyeing of cotton fibers, in particular to a low-salt dyeing method of reactive dyes.
Background
The reactive dyes are novel water-soluble dyes appearing in the 50 th century in the 20 th century, the molecules of the reactive dyes contain reactive groups capable of reacting with hydroxyl in cellulose and amino in protein fibers, covalent bonds are generated with the fibers during dyeing to generate a dye-fiber compound, the reactive dyes become the most important dyes for dyeing cotton fiber textiles with bright color, complete color spectrum, simple and convenient application, low cost and excellent fastness, but the reactive dyes have low exhaustion rate and fixation rate and are not high in dye plum forever, so a large amount of inorganic salt (sodium chloride or sodium sulfate) is required to be added in the dyeing process to improve the dye uptake and fixation rate of the dyes.
The dyeing method for cotton fibers in the market at present cannot reduce the input of inorganic salt and realize low-salt dyeing, and cannot improve the exhaustion degree and the fixation rate of the reactive dye by using the reactive dye, so that the low-salt dyeing method for the reactive dye is provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide a low-salt dyeing method of reactive dyes, which aims to solve the problems that the existing dyeing method for cotton fibers in the market proposed by the background technology cannot reduce the input of inorganic salt, realize low-salt dyeing, and cannot improve the exhaustion rate and the fixation rate of the reactive dyes by using the reactive dyes for dyeing.
In order to achieve the purpose, the invention provides the following technical scheme: a low-salt dyeing method of reactive dyes comprises the following steps:
(1) desizing cotton fabrics: placing the cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, and then placing the cotton fabric in dilute sulfuric acid for rolling;
(2) preparing a cotton fabric modification solution: putting the cation modifier and sodium hydroxide together, stirring and fusing;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, and then taking out the cotton fabric for washing;
(4) cotton fabric pretreatment: will have been treated beforePlacing cotton fabric in cross-linking agent OL2F1Soaking by X60D, and taking out the cotton fabric;
(5) drying: pre-drying the taken out cotton fabrics, and then baking;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, and adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric;
(7) washing cotton fabrics with water: washing the dyed cotton textile fabric with water;
(8) soaping the cotton fabrics: and adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping.
Preferably, the concentration of the sodium hydroxide in the step (1) is 10g/L-20g/L, the drying temperature is 60 ℃ to 80 ℃, the drying time is 6h to 12h, and meanwhile, the concentration of the dilute sulfuric acid for subsequently soaking the cotton fabric is 4g/L-6 g/L.
Preferably, in the step (3), the concentration of the cationic modifier is 10g/L, the concentration of the sodium hydroxide solvent is 5g/L, the soaking time of the cotton fabric is 60min, the temperature is 80 ℃, and the bath ratio of the modifying solution is 50: 1, when the cotton fabric is modified, heating the modified solution at the speed of 1 ℃/min, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed.
Preferably, in the step (4), the liquid carrying rate is controlled to be 60-70% during padding, and the pH value of the cross-linking agent is controlled to be about 10.
Preferably, the temperature for pre-drying the cloth in the step (5) is 60 ℃, the pre-drying time is 120s, and then the temperature for baking is 90 ℃, and the baking time is 180 s.
Preferably, in the step (6), the concentration of the reactive dye is 2% (owf), the concentration of the anhydrous sodium sulfate is 10g/L, the concentration of the anhydrous sodium sulfate is 50g/L, the concentration of the anhydrous sodium carbonate is 10g/L, and the bath ratio of the reactive dye after blending is 50: 1, when the temperature of the reactive dye is raised to 60 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 15min, putting the anhydrous sodium sulfate, the anhydrous sodium sulfate and the anhydrous sodium carbonate into the reactive dye, and then continuously soaking the cotton fabric for 45 min.
Preferably, the temperature of the water washing in the step (7) is 80 ℃, the time is 10min, and the bath ratio is 20: 1, the concentration of the anhydrous sodium carbonate in the step (8) is 2g/L, the concentration of the soap powder is also 2g/L, the temperature for soaping is 85 ℃, the time for soaping is 20min, and the bath ratio for soaping is 20: 1.
compared with the prior art, the invention has the beneficial effects that: this cylinder science and technology veneer drying-machine with adjustable interval:
(1) when the cotton textile is dyed, inorganic salt placed in the dyeing process is reduced, so that the uncontrollable factors in the whole dyeing process are reduced, the product quality is more stable, meanwhile, the dyeing procedure is reduced, the dyeing process is shorter, the energy consumption is reduced, the dyeing cost is lower, and the damage to the surrounding environment is minimized;
(2) in the dyeing process, the cloth to be dyed is firstly modified, so that the color fixing rate and the degree of exhaustion of the modified cotton textile fabric are obviously improved when the modified cotton textile fabric is colored, meanwhile, the utilization rate of the dye is obviously improved when the method is used for dyeing, the breaking capacity of a reticular structure formed on the surface of the fabric by the cross-linking agent is improved in the dyeing process, and the color fixing rate in the dyeing process is further enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides the following technical scheme: a low-salt dyeing method of reactive dyes comprises the following steps: (1) desizing cotton fabrics: placing a cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, then placing the cotton fabric in dilute sulfuric acid for rolling, wherein the concentration of sodium hydroxide is 10g/L, the drying temperature is 60 ℃, the drying time is 6h, and meanwhile, the concentration of dilute sulfuric acid for subsequently soaking the cotton fabric is 4 g/L;
(2) preparing a cotton fabric modification solution: putting a cation modifier and sodium hydroxide together, stirring and fusing, wherein the concentration of the cation modifier is 10g/L, the concentration of a sodium hydroxide solvent is 5g/L, the soaking time of the cotton fabric is 60min, the temperature is 80 ℃, and the bath ratio of a modified solution is 50: 1, heating a modification solution at a speed of 1 ℃/min when the cotton fabric is modified, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, and then taking out the cotton fabric for washing;
(4) cotton fabric pretreatment: placing the previously treated cotton fabric in the cross-linking agent OL2F1Soaking by X60D, then taking out the cotton fabric, controlling the liquid carrying rate to be 60% during padding, and controlling the pH value of the cross-linking agent to be about 10;
(5) drying: pre-drying the taken cotton fabrics, and then baking, wherein the temperature for pre-drying the fabrics is 60 ℃, the pre-drying time is 120s, the temperature for baking is 90 ℃, and the baking time is 180 s;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric, wherein the concentration of the reactive dye is 2% (owf), the concentration of the anhydrous sodium sulfate is 10g/L, the concentration of the anhydrous sodium sulfate is 50g/L, the concentration of the anhydrous sodium carbonate is 10g/L, and the bath ratio of the prepared reactive dye is 50: 1, when the temperature of the reactive dye is raised to 60 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 15min, putting anhydrous sodium sulfate, anhydrous sodium carbonate and anhydrous sodium sulfate into the reactive dye, and then continuously soaking the cotton fabric for 45 min;
(7) washing cotton fabrics with water: washing the dyed cotton fabric with water at 80 ℃ for 10min, wherein the bath ratio is 20: 1;
(8) soaping the cotton fabrics: adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping, wherein the concentration of the anhydrous sodium carbonate is 2g/L, the concentration of the soap powder is also 2g/L, the temperature during soaping is 85 ℃, the time during soaping is 20min, and the bath ratio during soaping is 20: 1.
example two
The invention provides the following technical scheme: a low-salt dyeing method of reactive dyes comprises the following steps: (1) desizing cotton fabrics: placing a cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, then placing the cotton fabric in dilute sulfuric acid for rolling, wherein the concentration of sodium hydroxide is 12g/L, the drying temperature is 65 ℃, the drying time is 8h, and meanwhile, the concentration of dilute sulfuric acid for subsequently soaking the cotton fabric is 4.5 g/L;
(2) preparing a cotton fabric modification solution: putting a cation modifier and sodium hydroxide together, stirring and fusing the cation modifier with the concentration of 8g/L and the sodium hydroxide solvent with the concentration of 4g/L, soaking cotton fabrics for 40min at the temperature of 60 ℃, wherein the bath ratio of the modified solution is 50: 1, heating a modification solution at a speed of 1 ℃/min when the cotton fabric is modified, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, and then taking out the cotton fabric for washing;
(4) cotton fabric pretreatment: placing the previously treated cotton fabric in the cross-linking agent OL2F1Soaking by X60D, then taking out the cotton fabric, controlling the liquid carrying rate to be 63% during padding, and controlling the pH value of the cross-linking agent to be about 8;
(5) drying: pre-drying the taken cotton fabrics, and then baking, wherein the temperature for pre-drying the fabrics is 50 ℃, the pre-drying time is 100s, the temperature for baking is 70 ℃, and the baking time is 150 s;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric, wherein the concentration of the reactive dye is 2% (owf), the concentration of the anhydrous sodium sulfate is 8g/L, the concentration of the anhydrous sodium sulfate is 40g/L, the concentration of the anhydrous sodium carbonate is 8g/L, and the bath ratio of the prepared reactive dye is 50: 1, when the temperature of the reactive dye is raised to 50 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 10min, putting anhydrous sodium sulfate, anhydrous sodium carbonate and anhydrous sodium sulfate into the reactive dye, and then continuously soaking the cotton fabric for 40 min;
(7) washing cotton fabrics with water: washing the dyed cotton fabric with water at the temperature of 70 ℃ for 8min, wherein the bath ratio is 20: 1;
(8) soaping the cotton fabrics: adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping, wherein the concentration of the anhydrous sodium carbonate is 2g/L, the concentration of the soap powder is also 2g/L, the temperature during soaping is 75 ℃, the time during soaping is 15min, and the bath ratio during soaping is 20: 1.
EXAMPLE III
The invention provides the following technical scheme: a low-salt dyeing method of reactive dyes comprises the following steps: (1) desizing cotton fabrics: placing a cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, then placing the cotton fabric in dilute sulfuric acid for rolling, wherein the concentration of sodium hydroxide is 6g/L, the drying temperature is 70 ℃, the drying time is 10h, and meanwhile, the concentration of dilute sulfuric acid for subsequently soaking the cotton fabric is 5 g/L;
(2) preparing a cotton fabric modification solution: putting a cation modifier and sodium hydroxide together, stirring and fusing, wherein the concentration of the cation modifier is 6g/L, the concentration of a sodium hydroxide solvent is 3g/L, the soaking time of the cotton fabric is 20min, the temperature is 40 ℃, and the bath ratio of a modified solution is 50: 1, heating a modification solution at a speed of 1 ℃/min when the cotton fabric is modified, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, and then taking out the cotton fabric for washing;
(4) cotton fabric pretreatment: placing the previously treated cotton fabric in the cross-linking agent OL2F1Soaking by X60D, then taking out the cotton fabric, controlling the liquid carrying rate to be 70% during padding, and controlling the pH value of the cross-linking agent to be about 6;
(5) drying: pre-drying the taken cotton fabrics, and then baking, wherein the temperature for pre-drying the fabrics is 40 ℃, the pre-drying time is 80s, the temperature for baking is 60 ℃, and the baking time is 150 s;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric, wherein the concentration of the reactive dye is 2% (owf), the concentration of the anhydrous sodium sulfate is 2g/L, the concentration of the anhydrous sodium sulfate is 50g/L, the concentration of the anhydrous sodium carbonate is 10g/L, and the bath ratio of the prepared reactive dye is 50: 1, when the temperature of the reactive dye is raised to 60 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 15min, putting anhydrous sodium sulfate, anhydrous sodium carbonate and anhydrous sodium sulfate into the reactive dye, and then continuously soaking the cotton fabric for 45 min;
(7) washing cotton fabrics with water: washing the dyed cotton fabric with water at 50 ℃ for 5min, wherein the bath ratio is 20: 1;
(8) soaping the cotton fabrics: adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping, wherein the concentration of the anhydrous sodium carbonate is 2g/L, the concentration of the soap powder is also 2g/L, the temperature during soaping is 65 ℃, the time during soaping is 15min, and the bath ratio during soaping is 20: 1.
example four
The invention provides the following technical scheme: a low-salt dyeing method of reactive dyes comprises the following steps: (1) desizing cotton fabrics: placing a cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, then placing the cotton fabric in dilute sulfuric acid for rolling, wherein the concentration of sodium hydroxide is 20g/L, the drying temperature is 80 ℃, the drying time is 12h, and meanwhile, the concentration of dilute sulfuric acid for subsequently soaking the cotton fabric is 6 g/L;
(2) preparing a cotton fabric modification solution: putting the cation modifier and sodium hydroxide together, stirring and fusing;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, then taking out the cotton fabric for washing, wherein the concentration of a cationic modifier is 10g/L, the concentration of a sodium hydroxide solvent is 5g/L, the soaking time of the cotton fabric is 60min, the temperature is 80 ℃, and the bath ratio of the modified solution is 50: 1, heating a modification solution at a speed of 1 ℃/min when the cotton fabric is modified, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed;
(4) cotton fabric pretreatment: placing the previously treated cotton fabric in the cross-linking agent OL2F1Soaking by X60D, then taking out the cotton fabric, and controlling the liquid carrying rate to be 70% during padding and controlling the pH value of the cross-linking agent to be about 5;
(5) drying: pre-drying the taken cotton fabrics, and then baking, wherein the temperature for pre-drying the fabrics is 20 ℃, the pre-drying time is 50s, the temperature for baking is 40 ℃, and the baking time is 60 s;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric, wherein the concentration of the reactive dye is 2% (owf), the concentration of the anhydrous sodium sulfate is 2g/L, the concentration of the anhydrous sodium sulfate is 10g/L, the concentration of the anhydrous sodium carbonate is 2g/L, and the bath ratio of the prepared reactive dye is 50: 1, when the temperature of the reactive dye is raised to 10 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 2min, putting anhydrous sodium sulfate, anhydrous sodium carbonate and anhydrous sodium sulfate into the reactive dye, and then continuously soaking the cotton fabric for 10 min;
(7) washing cotton fabrics with water: washing the dyed cotton fabric with water at the temperature of 10 ℃ for 2min, wherein the bath ratio is 20: 1;
(8) soaping the cotton fabrics: adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping, wherein the concentration of the anhydrous sodium carbonate is 2g/L, the concentration of the soap powder is also 2g/L, the temperature during soaping is 20 ℃, the time during soaping is 2min, and the bath ratio during soaping is 20: 1.
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 various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A low-salt dyeing method of reactive dyes is characterized by comprising the following steps:
(1) desizing cotton fabrics: placing the cotton fabric in a sodium hydroxide solution for soaking, then taking out the soaked cotton fabric, drying the cotton fabric, and then placing the cotton fabric in dilute sulfuric acid for rolling;
(2) preparing a cotton fabric modification solution: putting the cation modifier and sodium hydroxide together, stirring and fusing;
(3) modification of cotton fabric: placing the cotton fabric in a prepared modified solution for soaking, and then taking out the cotton fabric for washing;
(4) cotton fabric pretreatment: placing the previously treated cotton fabric in the cross-linking agent OL2F1Soaking by X60D, and taking out the cotton fabric;
(5) drying: pre-drying the taken out cotton fabrics, and then baking;
(6) dyeing the cotton fabric: placing the cotton fabric into a reactive dye for padding, and adding anhydrous sodium sulfate, anhydrous sodium sulfate and anhydrous sodium carbonate in the process of soaking the cotton fabric;
(7) washing cotton fabrics with water: washing the dyed cotton textile fabric with water;
(8) soaping the cotton fabrics: and adding soap powder and anhydrous sodium carbonate into the dyed and washed cotton fabric, and then carrying out soaping.
2. A method for dyeing a reactive dye with low salt according to claim 1, wherein: in the step (1), the concentration of the sodium hydroxide is 10-20 g/L, the drying temperature is 60-80 ℃, the drying time is 6-12 h, and meanwhile, the concentration of the dilute sulfuric acid for subsequently soaking the cotton fabric is 4-6 g/L.
3. A method for dyeing a reactive dye with low salt according to claim 1, wherein: in the step (3), the concentration of the cationic modifier is 10g/L, the concentration of the sodium hydroxide solvent is 5g/L, the soaking time of the cotton fabric is 60min, the temperature is 80 ℃, and the bath ratio of the modified solution is 50: 1, when the cotton fabric is modified, heating the modified solution at the speed of 1 ℃/min, and washing the cotton fabric to be neutral when the soaked cotton fabric is washed.
4. A method for dyeing a reactive dye with low salt according to claim 1, wherein: in the step (4), the liquid carrying rate is controlled to be 60-70% during padding, and the pH value of the cross-linking agent is controlled to be about 10.
5. A method for dyeing a reactive dye with low salt according to claim 1, wherein: in the step (5), the temperature for pre-drying the cloth is 60 ℃, the pre-drying time is 120s, and then the temperature for baking is 90 ℃, and the baking time is 180 s.
6. A method for dyeing a reactive dye with low salt according to claim 1, wherein: in the step (6), the concentration of the reactive dye is 2% (owf), the concentration of anhydrous sodium sulfate is 10g/L, the concentration of anhydrous sodium sulfate is 50g/L, the concentration of anhydrous sodium carbonate is 10g/L, and the bath ratio of the reactive dye after blending is 50: 1, when the temperature of the reactive dye is raised to 60 ℃, putting the cotton fabric into the reactive dye for padding, then soaking the cotton fabric for 15min, putting the anhydrous sodium sulfate, the anhydrous sodium sulfate and the anhydrous sodium carbonate into the reactive dye, and then continuously soaking the cotton fabric for 45 min.
7. A method for dyeing a reactive dye with low salt according to claim 1, wherein: the temperature of water washing in the step (7) is 80 ℃, the time is 10min, and the bath ratio is 20: 1, the concentration of the anhydrous sodium carbonate in the step (8) is 2g/L, the concentration of the soap powder is also 2g/L, the temperature for soaping is 85 ℃, the time for soaping is 20min, and the bath ratio for soaping is 20: 1.
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| CN103526606A (en) * | 2013-09-27 | 2014-01-22 | 昆山培新服装有限公司 | Reactive dye salt-free dying process of cotton fabric |
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| CN107740295A (en) * | 2017-10-31 | 2018-02-27 | 肇庆学院 | A kind of colouring method based on cotton fabric by utilizing reactive dye cation modifier |
| CN109252396A (en) * | 2018-09-07 | 2019-01-22 | 安徽亚源印染有限公司 | A kind of high-efficiency activated dyeing method of cotton fabric |
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Application publication date: 20210409 |