CN110983831A - Method for improving active printing and dyeing uniformity of cotton fabric - Google Patents

Method for improving active printing and dyeing uniformity of cotton fabric Download PDF

Info

Publication number
CN110983831A
CN110983831A CN201911316282.5A CN201911316282A CN110983831A CN 110983831 A CN110983831 A CN 110983831A CN 201911316282 A CN201911316282 A CN 201911316282A CN 110983831 A CN110983831 A CN 110983831A
Authority
CN
China
Prior art keywords
cotton
printing
dyeing
improving
uniformity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201911316282.5A
Other languages
Chinese (zh)
Inventor
曾军堂
陈庆
唐跃
刘超
何方
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu New Keli Chemical Science Co Ltd
Original Assignee
Chengdu New Keli Chemical Science Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu New Keli Chemical Science Co Ltd filed Critical Chengdu New Keli Chemical Science Co Ltd
Priority to CN201911316282.5A priority Critical patent/CN110983831A/en
Publication of CN110983831A publication Critical patent/CN110983831A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58Material containing hydroxyl groups
    • D06P3/60Natural or regenerated cellulose
    • D06P3/66Natural or regenerated cellulose using reactive dyes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/38General 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/44General 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
    • D06P1/445Use of auxiliary substances before, during or after dyeing or printing
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/44General 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
    • D06P1/52General 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 using compositions containing synthetic macromolecular substances
    • D06P1/5207Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/525Polymers of unsaturated carboxylic acids or functional derivatives thereof
    • D06P1/5257(Meth)acrylic acid
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/44General 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
    • D06P1/64General 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 using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642Compounds containing nitrogen
    • D06P1/6426Heterocyclic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/44General 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
    • D06P1/673Inorganic compounds
    • D06P1/67333Salts or hydroxides
    • D06P1/6735Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/10After-treatment with compounds containing metal
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/22Effecting variation of dye affinity on textile material by chemical means that react with the fibre

Landscapes

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

Abstract

The invention relates to the technical field of high-cotton textile fabric active printing and dyeing, in particular to a method for improving the uniformity of cotton textile fabric active printing and dyeing. The method for improving the active printing and dyeing uniformity of the cotton textile comprises the following steps: cutting the primary cotton fiber, mixing with soluble salt powder, and dispersing by air flow impact to form floccule, wherein the soluble salt powder is one of sodium chloride and sodium sulfate, and the length of the cut primary cotton fiber is less than or equal to 3 mm; adding the acrylic emulsion into the floccule to be dispersed into slurry; feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution on the surface of the cotton cloth in sequence, spraying the slurry, and then carrying out hot-pressing drying at the temperature of 60-80 ℃ by a hot roller to form a precoating layer on the surface of the cotton cloth; preparing reactive dye color paste, printing, drying, steaming, washing, soaping, drying and leveling to finish printing and dyeing. The cotton cloth has the advantages of better retention of gaps, high dyeing and fixing rate and uniform and bright color of a printing and dyeing layer.

Description

Method for improving active printing and dyeing uniformity of cotton fabric
Technical Field
The invention relates to the technical field of high-cotton textile fabric active printing and dyeing, in particular to a method for improving the uniformity of cotton textile fabric active printing and dyeing.
Background
With the continuous development of the application of cotton textiles and the requirement on environmental-friendly printing and dyeing, the environmental-friendly active printing and dyeing is rapidly developed in recent years. The printing process of the reactive dye is simple and environment-friendly, has high wet fastness, convenient color matching and low printing cost, and becomes a main choice for printing cellulose fibers.
Due to the characteristics of cotton cellulose, the molecular structure of the reactive dye contains one or more reactive groups, and the reactive dye can be combined with the carboxyl hydroxyl on the fabric fiber through covalent bonds under certain conditions to be firmly combined together, so that the firm printing and dyeing are realized. However, reactive dyes are adhered to fibers in a reactive manner, so that the fixation rate is generally low, and the dyes are easy to be separated differently during washing treatment after printing, so that the uniformity of printing and dyeing is affected, and the reactive dyes are often represented by whitish color quality and flowery.
Although the prior art increases the dye rate by using a large amount of salt and alkali as accelerating agents, the effect is still not obvious. The method commonly used by enterprises is to increase the salt consumption, but causes the cost to rise greatly and the sewage to increase. It has also been reported that the utilization rate of the dye can be increased and the fixation rate can be improved by using an organic solvent instead of water as the main dyeing medium of the reactive dye. But the solvent recovery cost is high and the pollution is large.
The Chinese patent with application number of 201210336320.5 discloses a method for improving dyeing uniformity of cationic paint by using ultrasonic waves, belonging to the technical field of textile printing and dyeing. The invention adopts the following process: firstly, treating the cotton fabric by using ultrasonic waves, removing air existing in gaps of fabric tissues, and improving the speed and uniformity of the fabric for absorbing dye liquor; secondly, preparing a paint dyeing liquid and treating the paint dyeing liquid by using ultrasonic waves to improve the dispersion uniformity of paint particles; and finally, dyeing and fixing the ultrasonically-dried fabric by using the paint dyeing bath after ultrasonic treatment. The invention respectively treats the fabric and the paint dyeing liquid by using ultrasonic waves, improves the uniformity of all parts in the fabric by using the cavitation of the ultrasonic waves, improves the dispersion performance of paint particles in the dyeing liquid, reduces the agglomeration of the paint particles and realizes the improvement of the dyeing uniformity of the cationic paint.
The Chinese patent application with the application number of 201210011097.7 discloses a method for improving the dye uptake and the fixation rate of kapok fiber reactive dye by rare earth, which comprises the steps of pretreating kapok fiber by utilizing rare earth elements and complexes thereof, and then dyeing the kapok fiber by utilizing the reactive dye. Compared with the prior art, the dyeing method can greatly improve the dye uptake and the fixation rate of the reactive dye on the kapok fiber, achieve the effects of saving the dye and the auxiliary agent, reducing the discharge of dyeing wastewater and improving the dyeing uniformity and the vividness, and greatly improve the dyeing fastness of the kapok fiber dyed by the method.
The Chinese patent application with the application number of 201810596367.2 discloses a cotton fabric dyeing method with good color fastness, which comprises the following steps: (1) washing with water; (2) pre-treating; (3) dyeing; (4) washing with water; (5) and (5) drying. Compared with the prior art, the invention has the beneficial effects that: the cotton fabric dyed by the dyeing method disclosed by the invention is uniform in color, free of color difference, bright in color, good in dyeing effect, not easy to fade and high in color fastness grade.
Patent application No. 201610790073.4 discloses a dyeing method of a comfortable cotton velvet fabric, comprising the following steps: 1) sequentially adding fatty acid polyethylene glycol ester borax, polyacrylic acid, dimethylamine and vegetable dye into a dye vat, sequentially adding deionized water, uniformly stirring, and heating to 45 ℃; 2) then, sequentially adding alkyl polyglycoside, sodium alkyl sulfosuccinate, n-butyl acrylate and titanium dioxide, continuously stirring until the components are fully and uniformly mixed, and heating to 60 ℃; 3) soaking the fabric in a dye vat for 40 minutes; 4) drying the soaked fabric at 85 ℃; 5) soaking the dried fabric into clean water for rinsing for 40 minutes; 6) and taking out the rinsed fabric and naturally drying. The dyed fabric has excellent color fastness, good dyeing uniformity and no color flowers.
Application No. 201810536643.6 discloses a dyeing process for improving the fixation of textiles, comprising the steps of: A. pre-dyeing treatment, B dyeing treatment, C dyeing post-treatment. The one-bath dyeing method integrates the cotton dyeing process and the polyester dyeing process, adopts a one-bath two-step method, firstly dyes cotton at low temperature, and then dyes polyester at high temperature, increases the feasibility of the one-bath dyeing method, greatly simplifies the process steps, reduces the energy consumption of water, steam and the like, reduces the time consumption of the process, and achieves the effects of saving energy, reducing emission and improving the production efficiency; the invention adopts a one-bath dyeing method to select proper components and proportion of the dye and the auxiliary agent, and combines the optimized process steps, process parameters (time, temperature) and the like, so that the dyeing effect of the fabric is greatly improved; the polyester-cotton fabric dyed and finished by the one-bath dyeing method has excellent washing color fastness, light color fastness, rubbing color fastness, water color fastness and perspiration color fastness, and is good in dyeing uniformity and free of color flowers.
The patent application with the application number of 201610387666.6 discloses a color fixing process method for natural dyeing of textiles, which is a two-step color fixing treatment method for textiles dyed by natural dyes. The first treatment fluid comprises a penetrating agent JFC, glyoxal, aluminum trichloride and citric acid or tartaric acid, and the second treatment fluid comprises polyvinyl alcohol or urea. The technical scheme improves various color fastness technical indexes including soaping fastness, rubbing fastness, perspiration fastness and light fastness, does not use any auxiliary agent in the whole set of dyeing treatment process, meets the requirements of environment protection and biocompatibility indexes of the country and the countries in Europe and America, and also has the technical advantages of high utilization rate of natural dyes and high comprehensive optimization of technical economy.
Disclosure of Invention
Aiming at the problems of low color fixing rate and uneven printing and dyeing of cotton fabrics in the prior art by adopting active printing and dyeing, the invention provides a method for improving the uniformity of active printing and dyeing of cotton fabrics.
In order to solve the problems, the invention adopts the following technical scheme:
a method for improving the uniformity of reactive printing and dyeing of cotton textiles comprises the following steps:
(1) cutting the primary cotton fiber, mixing with soluble salt powder, and dispersing by air flow impact to form floccule, wherein the soluble salt powder is one of sodium chloride and sodium sulfate, and the length of the cut primary cotton fiber is less than or equal to 3 mm;
(2) adding acrylic emulsion into the floccule prepared in the step (1) to be dispersed into slurry;
(3) feeding the cotton cloth into a roller to be flat, spraying the N-methylmorpholine-N-oxide aqueous solution and the slurry prepared in the step (2) on the surface of the cotton cloth in sequence, and then carrying out hot pressing and drying at the temperature of 60-80 ℃ by a hot roller to form a pre-coating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste, printing, drying, steaming, washing, soaping, drying and leveling to finish printing and dyeing.
The primary cotton fiber is natural cotton fiber, but not secondary cotton and regenerated cotton fiber.
The soluble salt powder has the functions of assisting the dispersion of the short fibers, can be one of sodium chloride and sodium sulfate, cannot assist the dispersion of the short fibers due to too small addition amount of the soluble salt powder, is high in cost due to too large addition amount of the soluble salt powder, and can assist the dispersion of the short fibers well when the mass ratio of the primary cotton fibers to the soluble salt powder is 4.7-5.2: 1. Wherein the mass ratio of the primary cotton fiber to the soluble salt powder is 5:1, and the effect is optimal.
Therefore, it is further preferable that the mass ratio of the raw cotton fibers to the soluble salt powder in the step (1) is 4.7 to 5.2:1, and it is preferable that the mass ratio of the raw cotton fibers to the soluble salt powder is 5: 1.
The dispersion of the gas stream impingement according to the invention can be achieved by using conventional gases, such as nitrogen, compressed air, and preferably without using oxygen, which lowers the ignition point, in order to avoid fire. The cotton fiber is light and easy to be dispersed by the gas, and the flow rate of the gas can be only required to disperse the cotton fiber.
More preferably, the mass concentration of the acrylic emulsion in the step (2) is 48-52%, and the mass concentration of the acrylic emulsion is preferably 50%. The acrylic emulsion and the floccule are dispersed into slurry according to the mass ratio of 100: 5-8.
More preferably, the mass concentration of the aqueous solution of N-methylmorpholine-N-oxide in step (3) is 79 to 83%, and the mass concentration of the aqueous solution of N-methylmorpholine-N-oxide is 82%.
The N-methylmorpholine-N-oxide aqueous solution has certain solubility on the fibers of cotton fibers, so that short cotton fibers are slightly dissolved to form a precoat layer. The precoating performance obtained by excessively high or excessively low mass concentration of the N-methylmorpholine-N-oxide aqueous solution is poor, and the color fixing rate after dyeing is reduced, and experiments show that when the mass concentration of the N-methylmorpholine-N-oxide aqueous solution is 79-83%, the obtained precoating performance is good, so that the color fixing rate of dyed cotton cloth is also good. When the mass concentration of the N-methylmorpholine-N-oxide aqueous solution is 82%, the obtained precoating layer has better performance, and the color fixing rate of the obtained dyed cotton cloth is also better.
Further preferably, the hot-pressing drying temperature of the hot roller in the step (3) is 70-80 ℃.
Further preferably, the reactive dye color paste obtained in the step (4) is prepared from a reactive dye, Arabic gum, a dispersing agent, sodium bicarbonate and water according to a mass ratio of: 3-5: 8-10: 0.2-0.5: 3-5: 50-80, stirring at high speed, heating to 80-95 ℃, and dispersing to obtain the catalyst.
The reactive dye in the reactive dye color paste in the step (4) can be the conventional reactive dye for textile printing and dyeing, wherein the dye suitable for cotton cloth is better, and particularly the dye yellow F-G, the reactive dye red B-4BD, the reactive dye yellow F4 or the reactive dye brilliant blue KBR suitable for the cotton cloth.
Therefore, it is further preferable that the reactive dye in the reactive dye color paste in the step (4) is dye yellow F-G, reactive dye red B-4BD, reactive dye yellow F4 or reactive dye brilliant blue KBR suitable for cotton cloth.
According to the invention, sodium bicarbonate in the reactive dye color paste not only plays a role of a color fixing agent for dyeing and printing, but also can prevent the yarn cylinder from generating white flowers, and experiments show that the reactive dye, the Arabic gum, the dispersing agent, the sodium bicarbonate and the water are in mass ratio: 3-5: 8-10: 0.2-0.5: 3-5: 50-80, the color fixing effect is good, and the amount of white flowers generated on the yarn cylinder is small.
Further preferably, the dispersing agent in the reactive dye color paste in the step (4) is polyvinyl alcohol or a maleic ester-acrylate copolymer.
Further preferably, the drying temperature in the step (4) is 60-80 ℃; preferably, the drying temperature in the step (4) is 65-70 ℃.
Further preferably, the steam treatment temperature in the step (4) is 90-110 ℃, and preferably the steam treatment temperature in the step (4) is 95-100 ℃.
The method comprises the steps of cutting the raw cotton fiber, mixing with soluble salt powder, and dispersing by air flow impact to form flocculent; then adding acrylic emulsion to disperse into paste; feeding the cotton cloth into a roller to be flat, spraying an N-methylmorpholine-N-oxide aqueous solution on the surface of the cotton cloth, further spraying a slurry, and carrying out hot-pressing drying by a hot roller to form a precoating layer on the surface of the cotton cloth; preparing reactive dye color paste, printing, drying, steaming, washing, soaping, drying and leveling to finish printing and dyeing.
Compared with the prior art, the invention has the outstanding characteristics and excellent effects that:
when the cotton cloth is printed and dyed, a precoating layer is firstly carried out, the protocotton short fibers are dispersed in the precoating layer, the cotton fibers are slightly dissolved and connected with the precoating layer through the solubility of N-methylmorpholine-N-oxide aqueous solution to the cotton fibers, the active groups of the short fibers are fully exposed and are easy to react with active dye, the short cotton fibers in the precoating layer are uniformly distributed, and when the active dye color paste is printed and dyed, the color paste is wetted by the short fibers and is uniformly spread on the surface layer of the cotton cloth after being adsorbed; the method has the obvious advantages that gaps of the cotton cloth are well reserved, the printing and dyeing fixation rate is high, and the printing and dyeing layer is uniform and bright in color.
Drawings
FIG. 1 is a graph showing the uniformity of cotton printing in comparison with that in example 1 and comparative example 1.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.
Example 1
(1) Cutting 5Kg of primary cotton fiber into short cotton fibers with the length less than or equal to 3mm, mixing the short cotton fibers with 1Kg of sodium chloride soluble salt powder, and impacting and dispersing the mixture by airflow to form floccules;
(2) adding 50% by mass of acrylic emulsion into the floccule prepared in the step (1) and dispersing into slurry; the acrylic emulsion and the floccule are dispersed into slurry according to the mass ratio of 100: 6.
(3) Feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution with the mass concentration of 82% on the surface of the cotton cloth in sequence, spraying the slurry prepared in the step (2), and then carrying out hot-pressing drying at 70 ℃ through a hot roller to form a precoating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste:
adding 300g of reactive dye red B-4BD, 800g of Arabic gum, 40g of polyvinyl alcohol dispersant, 400g of sodium bicarbonate and 5Kg of water into a reaction kettle, stirring at a high speed, heating to 90 ℃, dispersing to obtain reactive dye color paste, printing, drying at 65 ℃, steaming at 100 ℃, washing with water, soaping, drying and leveling to finish printing and dyeing.
And (3) performance testing:
the dyeing cotton cloth obtained in example 1 is subjected to a color fixing rate test according to GB/T2391-.
Respectively putting A, B samples into 200ml beakers into which 60ml of water is added, fully stirring for 1min by using a glass rod, then taking out the samples and putting the samples into a Soxhlet fat extractor which is preset with 100ml of water, heating and refluxing until the reflux liquid is colorless, taking out the samples, washing the samples by using a small amount of water, respectively collecting the colored liquid in 500ml volumetric flasks, cooling to room temperature, and diluting to the scale by using distilled water. If the wash color is too dark, it should be further diluted. The re-dilution factor of the washing solution of the steamed sample is 2, and the re-dilution factor of the washing solution of the unsteamed sample is 5.
The absorbance values of the A, B sample washes were measured at their maximum absorption wavelengths with a spectrophotometer as 0.147, 0.368, respectively.
Calculating the printing fixation rate according to the following formula:
F=(1-E1m/E2n)×100%
in the formula:
f-printing fixation rate;
e1-absorbance of steamed sample wash;
e2-absorbance of steamed sample wash; the test results are shown in table 1.
Example 2
(1) Cutting 5Kg of primary cotton fiber into short cotton fibers with the length less than or equal to 3mm, mixing the short cotton fibers with 1Kg of sodium chloride soluble salt powder, and impacting and dispersing the mixture by airflow to form floccules;
(2) adding 50% by mass of acrylic emulsion into the floccule prepared in the step (1) and dispersing into slurry; dispersing acrylic emulsion and floccule into slurry according to the mass ratio of 100: 7;
(3) feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution with the mass concentration of 82% on the surface of the cotton cloth in sequence, spraying the slurry prepared in the step (2), and then carrying out hot-pressing drying at 80 ℃ through a hot roller to form a precoating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste:
adding 400g of reactive dye red B-4BD, 800g of Arabic gum, 40g of polyvinyl alcohol dispersant, 400g of sodium bicarbonate and 5Kg of water into a reaction kettle, stirring at a high speed, heating to 90 ℃, dispersing to obtain reactive dye color paste, printing, drying at 65 ℃, steaming at 100 ℃, washing with water, soaping, drying and leveling to finish printing and dyeing.
The same performance test as in example 1 was carried out on the printed cloth, and the test results are shown in table 1.
Example 3
(1) Cutting 5Kg of primary cotton fiber into short cotton fiber with the length less than or equal to 3mm, mixing the short cotton fiber with 1Kg of sodium sulfate soluble salt powder, and impacting and dispersing air flow to form floccule;
(2) adding 50% by mass of acrylic emulsion into the floccule prepared in the step (1) and dispersing into slurry; dispersing acrylic emulsion and floccule into slurry according to the mass ratio of 100: 8;
(3) feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution with the mass concentration of 82% on the surface of the cotton cloth in sequence, spraying the slurry prepared in the step (2), and then carrying out hot-pressing drying at 65 ℃ by a hot roller to form a precoating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste:
adding 300g of reactive dye red B-4BD, 900g of Arabic gum, 40g of maleic ester-acrylate copolymer dispersant, 400g of sodium bicarbonate and 5Kg of water into a reaction kettle, stirring at a high speed, heating to 90 ℃, dispersing to obtain reactive dye color paste, printing, drying at 65 ℃, steaming at 100 ℃, washing with water, soaping, drying and leveling to finish printing and dyeing.
The same performance test as in example 1 was carried out on the printed cloth, and the test results are shown in table 1.
Example 4
(1) Cutting 5Kg of primary cotton fiber into short cotton fibers with the length less than or equal to 3mm, mixing the short cotton fibers with 1Kg of sodium chloride soluble salt powder, and impacting and dispersing the mixture by airflow to form floccules;
(2) adding 50% by mass of acrylic emulsion into the floccule prepared in the step (1) and dispersing into slurry; dispersing acrylic emulsion and floccule into slurry according to the mass ratio of 100: 8;
(3) feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution with the mass concentration of 82% on the surface of the cotton cloth in sequence, spraying the slurry prepared in the step (2), and then carrying out hot-pressing drying at 70 ℃ through a hot roller to form a precoating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste:
adding 300g of reactive dye red B-4BD, 800g of Arabic gum, 50g of maleic ester-acrylate copolymer dispersant, 500g of sodium bicarbonate and 5Kg of water into a reaction kettle, stirring at a high speed, heating to 90 ℃, dispersing to obtain reactive dye color paste, printing, drying at 65 ℃, steaming at 100 ℃, washing with water, soaping, drying and leveling to finish printing and dyeing.
The same performance test as in example 1 was carried out on the printed cloth, and the test results are shown in table 1.
Example 5
(1) Cutting 5Kg of primary cotton fiber into short cotton fibers with the length less than or equal to 3mm, mixing the short cotton fibers with 1Kg of sodium chloride soluble salt powder, and impacting and dispersing the mixture by airflow to form floccules;
(2) adding 50% by mass of acrylic emulsion into the floccule prepared in the step (1) and dispersing into slurry; dispersing acrylic emulsion and floccule into slurry according to the mass ratio of 100: 8;
(3) feeding the cotton cloth into a roller to be flat, spraying N-methylmorpholine-N-oxide aqueous solution with the mass concentration of 82% on the surface of the cotton cloth in sequence, spraying the slurry prepared in the step (2), and then carrying out hot-pressing drying at 70 ℃ through a hot roller to form a precoating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste:
adding 300g of reactive dye brilliant blue KBR, 800g of Arabic gum, 40g of polyvinyl alcohol dispersant, 400g of sodium bicarbonate and 5Kg of water into a reaction kettle, stirring at a high speed, heating to 85 ℃, dispersing to obtain reactive dye color paste, printing, drying at 65 ℃, steaming at 100 ℃, washing with water, soaping, drying and leveling to finish printing and dyeing.
The same performance test as in example 1 was carried out on the printed cloth, and the test results are shown in table 1.
Comparative example 1
Comparative example 1 the cotton woven fabric was not precoated but directly printed; the printing and dyeing process and the dye adopt the same scheme as that of the example 1.
And (3) performance testing:
carrying out color fixing rate test on the printing and dyeing cotton cloth obtained in the comparative example 1 according to GB/T2391-2014, cutting the sample and marking as C, D in the same example 1, wherein the re-dilution multiple of the washing liquid of the steamed sample is 2, and the re-dilution multiple of the washing liquid of the unsteamed sample is 4; the absorbance values are 0.170 and 0.283; the test results are shown in table 1.
Table 1: results of test of fixation ratio of prints of example 1 and comparative example 1
Sample numbering Print fixation (%)
Example 1 86%
Comparative example 1 70%
By observing the surfaces of the cotton fabrics printed and dyed in the example 1 and the comparative example 1, as a in the attached drawing 1 is the cotton fabric printed and dyed in the example 1, the printing and dyeing are uniform and have no color difference; in the attached figure 1, b is the cotton cloth printed and dyed in the comparative example 1, and due to the lack of the precoating treatment, the reactive dye has low fixation rate, and due to the lack of the spreading of a precoating layer on the dye, the dyeing uniformity is poor, and obvious color difference exists.

Claims (10)

1. A method for improving the uniformity of active printing and dyeing of cotton fabrics is characterized by comprising the following steps: the method for improving the active printing and dyeing uniformity of the cotton textile comprises the following steps:
(1) cutting the primary cotton fiber, mixing with soluble salt powder, and dispersing by air flow impact to form floccule, wherein the soluble salt powder is one of sodium chloride and sodium sulfate, and the length of the cut primary cotton fiber is less than or equal to 3 mm;
(2) adding acrylic emulsion into the floccule prepared in the step (1) to be dispersed into slurry;
(3) feeding the cotton cloth into a roller to be flat, spraying the N-methylmorpholine-N-oxide aqueous solution and the slurry prepared in the step (2) on the surface of the cotton cloth in sequence, and then carrying out hot pressing and drying at the temperature of 60-80 ℃ by a hot roller to form a pre-coating layer on the surface of the cotton cloth;
(4) preparing reactive dye color paste, printing, drying, steaming, washing, soaping, drying and leveling to finish printing and dyeing.
2. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: the mass ratio of the primary cotton fibers to the soluble salt powder in the step (1) is 4.7-5.2: 1.
3. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: the mass concentration of the acrylic emulsion in the step (2) is 48-52%; the acrylic emulsion and the floccule are dispersed into slurry according to the mass ratio of 100: 5-8.
4. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: the mass concentration of the N-methylmorpholine-N-oxide aqueous solution in the step (3) is 79-83%.
5. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: and (4) carrying out hot-pressing drying on the hot roller at the temperature of 70-80 ℃.
6. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: the reactive dye color paste in the step (4) is prepared from a reactive dye, Arabic gum, a dispersing agent, sodium bicarbonate and water according to the mass ratio: 3-5: 8-10: 0.2-0.5: 3-5: 50-80, stirring at high speed, heating to 80-95 ℃, and dispersing to obtain the catalyst.
7. The method for improving the reactive printing and dyeing uniformity of the cotton textile fabric according to claim 6, wherein the method comprises the following steps: the reactive dye in the reactive dye color paste in the step (4) is dye yellow F-G, reactive dye red B-4BD, reactive dye yellow F4 or reactive dye brilliant blue KBR which is suitable for cotton cloth.
8. The method for improving the reactive printing and dyeing uniformity of the cotton textile fabric according to claim 6, wherein the method comprises the following steps: and (4) the dispersing agent in the reactive dye color paste is polyvinyl alcohol or a maleic ester-acrylate copolymer.
9. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: and (4) drying at the temperature of 60-80 ℃.
10. The method for improving the reactive printing uniformity of the cotton fabric according to claim 1, wherein: and (4) performing steam treatment at the temperature of 90-110 ℃.
CN201911316282.5A 2019-12-19 2019-12-19 Method for improving active printing and dyeing uniformity of cotton fabric Withdrawn CN110983831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911316282.5A CN110983831A (en) 2019-12-19 2019-12-19 Method for improving active printing and dyeing uniformity of cotton fabric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911316282.5A CN110983831A (en) 2019-12-19 2019-12-19 Method for improving active printing and dyeing uniformity of cotton fabric

Publications (1)

Publication Number Publication Date
CN110983831A true CN110983831A (en) 2020-04-10

Family

ID=70096020

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911316282.5A Withdrawn CN110983831A (en) 2019-12-19 2019-12-19 Method for improving active printing and dyeing uniformity of cotton fabric

Country Status (1)

Country Link
CN (1) CN110983831A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111505004A (en) * 2020-04-21 2020-08-07 东华大学 Method for identifying natural colored cotton and dyed cotton

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111505004A (en) * 2020-04-21 2020-08-07 东华大学 Method for identifying natural colored cotton and dyed cotton
CN111505004B (en) * 2020-04-21 2021-04-06 东华大学 Method for identifying natural colored cotton and dyed cotton

Similar Documents

Publication Publication Date Title
CN1308544C (en) Digital ink jet fabric-treating process
CN102605649B (en) Pigment dyeing method of denim yarn
CN100503965C (en) Method of raising light fastness of natural dye fabric
CN103194917B (en) Desizing-free polyacrylate emulsion slurry for one-step dyeing and weaving and preparation method thereof
CN105803828A (en) Disperse/activated one-emulsion paste printing dye and printing technology thereof
CN108166241A (en) Cotton knitwear short route dyeing and finishing technology method
CN101328688B (en) Purified cotton cloth reactive dye wet steaming deep color dyeing method
CN110747663A (en) Reactive dye printing paste and printing method thereof
CN105672002A (en) Method for achieving continuous pad-dry-cure dyeing of polyester
CN101858019A (en) Efficient and continuous dyeing process method for textile fabric through wet-state steaming
CN109537327B (en) Short-process washing-free dyeing method for polyester plush fabric
CN109233337B (en) Black dye composition and dye product
CN104746359A (en) Fluorescent paint dip-dyeing method of cotton fabrics
CN111455700A (en) Cationic polyester fabric dyeing and finishing method
CN105220531A (en) A kind of cold-rolling heap staining method of textile fabric
CN110983831A (en) Method for improving active printing and dyeing uniformity of cotton fabric
CN109322178A (en) It is a kind of to wash the/dyeing and finishing processing method of cellulose fibre intertexture jacquard fabric
CN104988729B (en) A kind of cotton sizing agent and its preparation process
CN107675524A (en) A kind of environmentally friendly colouring method of the low bath raio of textile material
CN113005791A (en) On-line solvent dyeing method of disperse dye
CN107059435A (en) A kind of pure cotton fabric exempts from decatize printing method
CN113863034A (en) Method for short-flow pre-treatment dyeing of polyester-cotton knitted fabric
CN110016103B (en) Modified carboxymethyl starch polymer and preparation method and application thereof
CN107142749B (en) A method of improving the dyeing utilization rate of reactive dye
US3795481A (en) Process for the single-bath dyeing of cellulose and polyamide fiber blends according to the pad dyeing technique

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20200410

WW01 Invention patent application withdrawn after publication