CN116122059A - Cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology - Google Patents

Cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology Download PDF

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CN116122059A
CN116122059A CN202211564282.9A CN202211564282A CN116122059A CN 116122059 A CN116122059 A CN 116122059A CN 202211564282 A CN202211564282 A CN 202211564282A CN 116122059 A CN116122059 A CN 116122059A
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dyeing
cotton fiber
indigo dye
minutes
dye vat
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Inventor
王广武
杜立新
张璐
刘小龙
丰硕
王钰
徐峰
夏文静
翟东升
马庆霞
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Luthai Textile Co Ltd
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Luthai Textile Co Ltd
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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
    • D06P1/22—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 vat dyestuffs including indigo
    • D06P1/228—Indigo
    • 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
    • D06P1/655—Compounds containing ammonium groups
    • D06P1/66—Compounds containing ammonium groups containing quaternary ammonium groups
    • 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
    • D06P3/6025—Natural or regenerated cellulose using vat or sulfur 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
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02—After-treatment
    • 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
    • D06P5/22—Effecting variation of dye affinity on textile material by chemical means that react with the fibre
    • D06P5/225—Aminalization of cellulose; introducing aminogroups into cellulose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Coloring (AREA)

Abstract

The invention belongs to the technical field of textile dyeing, and particularly relates to a cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology. The method comprises the following steps: (1) cationic modification and indigo dye vat dyeing process: after beating cakes, putting a cationic modifier, sodium hydroxide and a penetrating agent into a cone yarn dyeing machine for cationic modification; the solution is not drained, the dyeing process is carried out after the temperature is regulated, the protection powder is added for reduction, and the indigo dye is added; (2) oxidation fixation process: adding hydrogen peroxide for fixation after overflow cleaning; (3) post-treatment process: washing, soaping, washing, softening treatment and drying. The invention carries out the cationic modification of cotton fiber and the reduction dyeing of indigo dye in the same bath, simplifies the process, shortens the dyeing time, improves the dye uptake, reduces the discharge of dyeing wastewater and saves the cost.

Description

Cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology
Technical Field
The invention belongs to the technical field of textile dyeing, and particularly relates to a cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology.
Background
The indigo dye is insoluble in water and can not dye fibers, and needs to be reduced into a single-ion leuco body under the action of a reducing agent and alkali, and then leuco body dyeing and leuco body oxidation are carried out to finish dyeing. Therefore, the conventional indigo dyeing can be performed by performing scouring pretreatment and modification treatment on textile materials such as yarns, fabrics and the like.
Patent CN105401463B discloses a process for dyeing cotton fiber with indigo dye, which comprises refining, washing and dewatering cotton fiber, dyeing cotton fiber in non-aqueous dye liquor prepared from high concentration indigo leuco and D5 (decamethyl cyclopentasiloxane), and oxidizing.
Patent CN111893781a discloses a dyeing method, in which yarn is pretreated by high-temperature scouring, high Wen Qizheng and other methods; after dyeing, a series of complicated steps such as high-temperature nitrogen treatment, three times of water washing, two times of drying and the like are needed.
Patent CN113981720a discloses an indigo dye dyeing method, wherein the cone yarn is subjected to oxygen bleaching pretreatment to improve hygroscopicity and whiteness, and then the cone yarn after indigo dyeing is obtained through modification, dyeing and water washing treatment.
Although the technical scheme is improved on the traditional indigo dyeing process, some monitoring substances such as D5 and the like are used, and the textile material still needs to be pretreated, so that the process is complex, the flow is long, a large amount of energy consumption and water consumption are generated, and the environment protection is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology, so that pretreatment of cotton fibers is not realized, modification and vat dyeing can be carried out in one bath, the dosage of chemicals is reduced, and the energy consumption and the water consumption are reduced.
The invention relates to a cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology, which comprises the following steps:
(1) Cationic modification and indigo dye vat dyeing process: after beating cakes, putting a cationic modifier, sodium hydroxide and a penetrating agent into a cone yarn dyeing machine for cationic modification; the solution is not drained, the dyeing process is carried out after the temperature is regulated, sodium hydrosulfite is added for reduction, and indigo dye is added after 10 minutes;
(2) And (3) oxidation fixation process: adding hydrogen peroxide for fixation after overflow cleaning for 10 minutes;
(3) The post-treatment process comprises the following steps: washing, soaping, washing, softening treatment and drying.
Wherein:
the density of the cotton fiber cake obtained in the step (1) is 0.28-0.35g/cm 3 。
The cationic modifier in the step (1) is 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, the dosage of the cationic modifier is 10-15g/L, the dosage of sodium hydroxide is 10-15g/L, and the dosage of the penetrating agent is 0.5-4g/L.
The temperature of the cationic modification in the step (1) is 60-90 ℃ and the time is 30-90 minutes.
The dyeing process in the step (1) is carried out at the temperature of 40-60 ℃ for 40-60 minutes.
The dosage of the sodium hydrosulfite in the step (1) is 4-10g/L, and the dosage of the indigo dye is 0.5-6% of the mass of the cotton fiber.
The oxidation fixation process in the step (2) is carried out at the temperature of 40-80 ℃ for 10-30 minutes, and the dosage of hydrogen peroxide is 1-4g/L.
The water washing process in the step (3) is carried out at the temperature of 30-50 ℃ for 10-20 minutes.
The soaping process in the step (3) has the temperature of 80-98 ℃ and the time of 10-20 minutes, and the dosage of the soaping agent is 1-4g/L.
The softening treatment process in the step (3) is carried out at the treatment temperature of 40-60 ℃ for 20-30 minutes; the dosage of acetic acid is 0.3-0.9g/L; the dosage of the softener is 2% -4% of the mass of cotton fiber; the drying temperature is 60-110 ℃ and the drying time is 10-30 minutes.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention carries out the cationic modification of cotton fiber and the reduction dyeing of indigo dye in the same bath, simplifies the process, shortens the dyeing time, improves the dye uptake, reduces the discharge of dyeing wastewater and saves the cost.
(2) The invention does not need to carry out pretreatment on cotton fibers, reduces the dosage of chemicals and is beneficial to environmental protection; while reducing fiber damage.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited thereto.
The penetrant WA-M, soaping agent WO, softener LUA, refining agent SAE used in the examples were purchased from Zibo Lu Rui fine chemical Co.
All materials used in the examples are commercially available, except as specified.
Example 1
The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology comprises the following steps:
(1) Cationic modification and indigo dye vat dyeing process: beating cotton fiber into cake with density of 0.30g/cm 3 Putting into a cone yarn dyeing machine, adding 15g/L of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, 15g/L of NaOH and 15g/L of penetrating agent WA-M2g/L, and keeping at 80 ℃ for 60 minutes. Then cooling to 45 ℃ without draining water, adding 6g/L of the protective powder, keeping for 10 minutes, and adding plant indigoAfter the dye, the mixture was kept at 45℃for 40 minutes, the amount of indigo dye being 4% of the mass of the cotton fiber.
(2) And (3) oxidation fixation process: after dyeing, overflow cleaning is adopted, after 10 minutes, 2g/L hydrogen peroxide is added, and oxidation fixation is carried out at 60 ℃ for 15 minutes.
(3) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 45℃for 15 minutes, preliminarily washed off the flooding, and kept at 90℃for 15 minutes with the addition of 2g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.6g/L is added, the LUA dosage of the softener is 3% of the mass of cotton fiber, the cotton fiber is kept at 60 ℃ for 20 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 60 ℃ and the time is 30 minutes.
Example 2
The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology comprises the following steps:
(1) Cationic modification and indigo dye vat dyeing process: beating cotton fiber into cake with density of 0.28g/cm 3 Putting into a cone yarn dyeing machine, adding 10g/L of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, 10g/L of NaOH and 0.5g/L of penetrating agent, and keeping at 60 ℃ for 90 minutes. Then cooling to 45 ℃ without draining water, adding 4g/L of the protective powder, keeping for 10 minutes, adding the plant indigo dye, and keeping for 40 minutes at 40 ℃ until the dosage of the indigo dye is 0.5% of the mass of the cotton fiber.
(2) And (3) oxidation fixation process: after dyeing, overflow cleaning is adopted, after 10 minutes, 1g/L hydrogen peroxide is added, and oxidation fixation is carried out for 30 minutes at 40 ℃.
(3) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 30℃for 20 minutes, preliminarily washed off the flooding, and kept at 80℃for 20 minutes with 1g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.3g/L is added, the LUA dosage of the softener is 2% of the mass of cotton fiber, the cotton fiber is kept at 40 ℃ for 30 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 90 ℃ and the time is 20 minutes.
Example 3
The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology comprises the following steps:
(1) Cationic modification and indigo dye vat dyeing process: beating cotton fiber into cake with density of 0.35g/cm 3 Putting into a cone dyeing machine, adding 12g/L of 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, 12g/L of NaOH and 4g/L of penetrating agent, and keeping at 90 ℃ for 30 minutes. Then cooling to 45 ℃ without draining water, adding 10g/L of the protective powder, keeping for 10 minutes, adding the plant indigo dye, and keeping for 40 minutes at 45 ℃ until the dosage of the indigo dye is 6% of the mass of the cotton fiber.
(2) And (3) oxidation fixation process: after dyeing, overflow cleaning is adopted, after 10 minutes, 4g/L hydrogen peroxide is added, and oxidation fixation is carried out at 80 ℃ for 10 minutes.
(3) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 50℃for 10 minutes, preliminarily washed off the flooding, and kept at 98℃for 10 minutes with the addition of 4g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.9g/L is added, the LUA dosage of the softener is 4% of the mass of cotton fiber, the cotton fiber is kept at 50 ℃ for 25 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 110 ℃ and the time is 10 minutes.
The traditional indigo dyeing process comprises the following steps:
comparative example 1
(1) Pretreatment: beating cotton fiber into cake with density of 0.30g/cm 3 Putting the mixture into a cone yarn dyeing machine, adding refining agent SAE6g/L, naOH5g/L and hydrogen peroxide 8g/L, keeping at 100 ℃ for 40 minutes, and then draining. Washing with water at 90℃for 10 minutes. Then, 1g/L of neutralizing acid and 0.3g/L of ferment are added at 50 ℃ for 20 minutes of ferment washing.
(2) Dyeing: adding water to raise the temperature to 45 ℃, adding plant indigo dye to keep for 40 minutes, wherein the dosage of the indigo dye is 4% of the mass of the cotton fiber.
(3) Reduction treatment: the concentration of sodium hydroxide is 15g/L, the concentration of sodium hydrosulfite is 6g/L, the temperature is 45 ℃, the temperature is kept for 40 minutes, no liquid is discharged, and overflow water washing is carried out for 10 minutes.
(4) And (3) oxidation treatment: the concentration of hydrogen peroxide is 2g/L, the temperature is 60 ℃, and the hydrogen peroxide is kept for 15 minutes.
(5) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 45℃for 15 minutes, preliminarily washed off the flooding, and kept at 90℃for 15 minutes with the addition of 2g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.6g/L is added, the LUA dosage of the softener is 3% of the mass of cotton fiber, the cotton fiber is kept at 60 ℃ for 20 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 60 ℃ and the time is 30 minutes.
Comparative example 2
(1) Pretreatment: beating cotton fiber into cake with density of 0.28g/cm 3 Putting the mixture into a cone yarn dyeing machine, adding refining agent SAE6g/L, naOH5g/L and hydrogen peroxide 8g/L, keeping at 100 ℃ for 40 minutes, and then draining. Washing with water at 90℃for 10 minutes. Then, 1g/L of neutralizing acid and 0.3g/L of ferment are added at 50 ℃ for 20 minutes of ferment washing.
(2) Dyeing: adding water to raise the temperature to 45 ℃, adding plant indigo dye to keep for 40 minutes, wherein the dosage of the indigo dye is 0.5% of the mass of the cotton fiber.
(3) Reduction treatment: the concentration of sodium hydroxide is 10g/L, the concentration of sodium hydrosulfite is 4g/L, the temperature is 45 ℃, the temperature is kept for 40 minutes, no liquid is discharged, and overflow water washing is carried out for 10 minutes.
(4) And (3) oxidation treatment: the concentration of hydrogen peroxide is 1g/L, the temperature is 60 ℃, and the hydrogen peroxide is kept for 15 minutes.
(5) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 45℃for 15 minutes, preliminarily washed off the flooding, and kept at 90℃for 15 minutes with the addition of 2g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.6g/L is added, the LUA dosage of the softener is 3% of the mass of cotton fiber, the cotton fiber is kept at 60 ℃ for 20 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 90 ℃ and the time is 20 minutes.
Comparative example 3
(1) Pretreatment: beating cotton fiber into cake with density of 0.35g/cm 3 Putting the mixture into a cone yarn dyeing machine, adding refining agent SAE6g/L, naOH5g/L and hydrogen peroxide 8g/L, keeping at 100 ℃ for 40 minutes, and then draining. Washing with water at 90℃for 10 minutes. Then, 1g/L of neutralizing acid and 0.3g/L of ferment are added at 50 ℃ for 20 minutes of ferment washing.
(2) Dyeing: adding water to raise the temperature to 45 ℃, adding plant indigo dye to keep for 40 minutes, wherein the dosage of the indigo dye is 6% of the mass of the cotton fiber.
(3) Reduction treatment: the concentration of sodium hydroxide is 12g/L, the concentration of sodium hydrosulfite is 10g/L, the temperature is 45 ℃, the temperature is kept for 40 minutes, no liquid is discharged, and overflow water washing is carried out for 10 minutes.
(4) And (3) oxidation treatment: the concentration of hydrogen peroxide is 4g/L, the temperature is 60 ℃, and the hydrogen peroxide is kept for 15 minutes.
(5) The post-treatment process comprises the following steps: the oxidized cotton fiber cake was washed with water at 45℃for 15 minutes, preliminarily washed off the flooding, and kept at 90℃for 15 minutes with the addition of 2g/L of soaping agent WO, followed by further washing with water to remove the flooding. Acetic acid 0.6g/L is added, the LUA dosage of the softener is 3% of the mass of cotton fiber, the cotton fiber is kept at 60 ℃ for 20 minutes, and the cotton fiber is subjected to softening treatment, so that the subsequent colored spinning production is facilitated, and the drying temperature is 110 ℃ and the time is 10 minutes.
The cotton fiber is dyed by adopting the comparative example (comprising the steps of pretreatment, indigo dye, vat dyeing, oxidation, water washing and the like) of the traditional indigo dyeing process with the aid of the same concentration as the embodiment of the invention, and the color depth and various fastnesses of the cotton fiber are compared as follows:
the dry rub fastness was measured using the American standard AATCC8-2013 test method;
wet rub fastness was measured using the American standard AATCC8-2013 test method;
the wash fastness was measured using the American standard AATCC61-2013 test method.
Figure BDA0003985665440000051
As shown in the table, compared with the cotton fiber obtained by the traditional indigo dyeing process, the dyeing depth (K/S value) of the invention is obviously increased, which proves that the dyeing rate of the indigo dye is greatly improved except for shortening the process flow, the industrial defects of high energy consumption and high pollution of the traditional indigo dye can be solved, and the quality problems of internal heterodyne, uneven dyeing and the like caused by dyeing of the cone yarn can be effectively avoided by dyeing the fiber and then carrying out the spun-dyed yarn.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.

Claims (10)

1. The cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology is characterized by comprising the following steps of:
(1) Cationic modification and indigo dye vat dyeing process: after beating cakes, putting a cationic modifier, sodium hydroxide and a penetrating agent into a cone yarn dyeing machine for cationic modification; the solution is not drained, the dyeing process is carried out after the temperature is regulated, and after the reduction of the protective powder is carried out, the indigo dye is added;
(2) And (3) oxidation fixation process: adding hydrogen peroxide for fixation after overflow cleaning;
(3) The post-treatment process comprises the following steps: washing, soaping, washing, softening treatment and drying.
2. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing process according to claim 1, characterized in that the cotton fiber cake density in step (1) is 0.28-0.35g/cm 3 。
3. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the cationic modifier in the step (1) is 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, the cationic modifier is 10-15g/L, the sodium hydroxide is 10-15g/L, and the penetrating agent is 0.5-4g/L.
4. The process for the cationic modification and vat dyeing of cotton fibers according to claim 1, wherein the cationic modification is carried out at a temperature of 60-90 ℃ for 30-90 minutes in step (1).
5. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing process according to claim 1, wherein the dyeing process in step (1) has a temperature of 40-60 ℃ for 40-60 minutes.
6. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the amount of the sodium hydrosulfite in the step (1) is 4-10g/L, and the amount of the indigo dye is 0.5-6% of the mass of the cotton fiber.
7. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the oxidation fixation technology in the step (2) is at a temperature of 40-80 ℃ for 10-30 minutes, and the hydrogen peroxide is used in an amount of 1-4g/L.
8. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the water washing technology in the step (3) is carried out at a temperature of 30-50 ℃ for 10-20 minutes.
9. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the soaping technology in the step (3) has the temperature of 80-98 ℃ for 10-20 minutes, and the amount of soaping agent is 1-4g/L.
10. The cotton fiber cationic modification and indigo dye vat dyeing one-bath processing technology according to claim 1, wherein the softening treatment technology in the step (3) is carried out at a treatment temperature of 40-60 ℃ for 20-30 minutes; the dosage of acetic acid is 0.3-0.9g/L; the dosage of the softener is 2% -4% of the mass of cotton fiber; the drying temperature is 60-110 ℃ and the drying time is 10-30 minutes.
CN202211564282.9A 2022-12-07 2022-12-07 Cotton fiber cation modification and indigo dye vat dyeing one-bath processing technology Pending CN116122059A (en)

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