CN113494028A - Nylon-cotton fabric dyeing process - Google Patents
Nylon-cotton fabric dyeing process Download PDFInfo
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- CN113494028A CN113494028A CN202010202476.9A CN202010202476A CN113494028A CN 113494028 A CN113494028 A CN 113494028A CN 202010202476 A CN202010202476 A CN 202010202476A CN 113494028 A CN113494028 A CN 113494028A
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- cotton fabric
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- cotton
- brocade
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- 239000004744 fabric Substances 0.000 title claims abstract description 88
- 238000004043 dyeing Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000008569 process Effects 0.000 title claims abstract description 37
- 239000000975 dye Substances 0.000 claims abstract description 106
- 230000007935 neutral effect Effects 0.000 claims abstract description 36
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- 229920001778 nylon Polymers 0.000 claims abstract description 29
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- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 14
- 239000001632 sodium acetate Substances 0.000 claims description 14
- 235000017281 sodium acetate Nutrition 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 10
- 239000001913 cellulose Substances 0.000 claims description 10
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- 230000009467 reduction Effects 0.000 claims description 9
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- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- 239000000872 buffer Substances 0.000 claims description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 6
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 6
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 6
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000005642 Oleic acid Substances 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 6
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 6
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000011946 reduction process Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 34
- 230000000694 effects Effects 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
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- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000980 acid dye Substances 0.000 description 2
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- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
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- 230000002209 hydrophobic effect Effects 0.000 description 1
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Images
Classifications
-
- 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
-
- 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
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- 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
- D06P1/46—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 using compositions containing natural macromolecular substances or derivatives thereof
- D06P1/48—Derivatives of carbohydrates
- D06P1/50—Derivatives of cellulose
-
- 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
- D06P1/653—Nitrogen-free carboxylic acids or their salts
- D06P1/6533—Aliphatic, araliphatic or cycloaliphatic
-
- 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
-
- 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
- D06P3/82—Textiles which contain different kinds of fibres
- D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
- D06P3/8219—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and amide groups
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses a dyeing process of nylon-cotton fabric, which adopts a one-bath one-step method to dye undyed nylon-cotton fabric, and comprises the following steps: s1, putting the desized brocade and cotton fabric into a dye vat, and adding a dye and color fixing accelerant into the dye vat at room temperature to perform soaking treatment for 1-2 hours, wherein the use amount of the dye and color fixing accelerant is 1-5 g/L; s2, adding neutral dye and reactive dye into the dye vat, adding an acid-base buffering agent to adjust the pH value to 9.5-10.5, heating to 96-100 ℃ at the speed of 1-1.5 ℃/min, carrying out heat preservation dyeing for 15-20min, and then carrying out cooling and liquid discharge, wherein the dosage of the neutral dye is 0.5-3% owf, and the dosage of the reactive dye is 1-3% owf; and S4, steaming, reducing, washing, oxidizing and soaping the dyed cotton and nylon fabric in sequence to fully develop color of the dye, and then washing, drying and discharging the fabric to finish the whole dyeing process.
Description
Technical Field
The invention relates to the technical field of textile dyeing and finishing, in particular to a brocade and cotton fabric dyeing process.
Background
In recent years, brocade and cotton fabric series products are more and more popular in international and domestic markets. The nylon fiber has the characteristics of good elasticity, high strength, light weight, wear resistance, good moisture absorption and the like, is 4-5 times as high as wool in wear resistance, durability and wear resistance, is popular with people, but is hydrophobic fiber and cannot be wet and breathable when being used. The cotton fiber is hydrophilic fiber, has the advantages of soft hand feeling, good moisture absorption and air permeability and the like, but is easy to wrinkle and stiff and smooth. The nylon and the cotton fiber are blended into the nylon-cotton fabric, which has the advantages of two fibers and the complementary defect, has excellent moisture permeability and air permeability, and excellent wear resistance and stiffness, and is an ideal fabric for manufacturing casual clothes and fashionable clothes.
However, since nylon fibers and cotton fibers have different structures and different dyeing properties, the dyeing of nylon-cotton fabrics is a complex process, and at present, domestic manufacturers mostly adopt a two-bath two-step over-dyeing method as shown in fig. 1 to dye the nylon fibers in the nylon-cotton fabrics by adopting acid dyes under an acid condition, then dye the cotton fibers in the nylon-cotton fabrics by using reactive dyes under an alkaline condition, and then complete the dyeing of the nylon-cotton fabrics by steaming (color fixation), washing, soaping, washing and drying. However, the dyeing process has the defects of high production cost, longer processing period, high energy consumption, more pollution discharge, complex preparation process and the like.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a brocade and cotton fabric dyeing process, which adopts a one-bath one-step method for dyeing, shortens the dyeing time, has lower energy consumption and cost, better dyeing effect and color fastness, and can not cause the phenomena of color scrambling and staining of the brocade and cotton components.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a dyeing process of nylon-cotton fabric, which adopts a one-bath one-step method to dye undyed nylon-cotton fabric, and comprises the following steps:
s1, putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: (5-10), adding a dye and color fixing accelerant into the dye vat at room temperature, and soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 1-5 g/L;
s2, adding neutral dye and reactive dye into a dye vat, adding an acid-base buffering agent to adjust the pH value to 9.5-10.5, heating to 96-100 ℃ at the speed of 1-1.5 ℃/min, carrying out heat preservation dyeing for 15-20min, and then carrying out cooling and liquid discharge, wherein the neutral dye is 0.5-3% owf, the reactive dye is 1-3% owf, and the dye is in percentage by weight relative to the fabric, namely% owf;
s3, steaming, reducing, washing, oxidizing and soaping the dyed cotton and nylon fabric in sequence to enable the dye to fully develop color, washing, drying and discharging the fabric to finish the whole dyeing process;
in the step S1, the dye and color fixing accelerant comprises the following components in parts by weight: 20-40 parts of sodium sulfate, 15-20 parts of sodium acetate and 6-10 parts of a dispersing agent; the dispersant is cellulose nanospheres and oleic acid with the mass ratio of 1 (1-1.5).
Before dyeing the nylon-cotton fabric, the nylon-cotton fabric is treated by using a dyeing and fixing accelerant, so that sodium sulfate and sodium acetate electrolytes are adsorbed on the surface of the nylon-cotton fabric in advance, the acting force between the cellulose nanospheres and the surface of the nylon/cotton fabric is limited, and the cellulose nanospheres with large specific surface area, strong adsorption capacity and high reaction activity are adopted to be adsorbed to the surface of the nylon/cotton fabric so as to play a role in promoting dyeing and color fixation. When subsequent dyeing treatment is carried out, the dye solution is in certain alkalinity, and under the alkaline condition, the electrolyte absorbed in the pores of the cellulose nanospheres is slowly released, so that the concentration of the electrolyte on the surface of the nylon-cotton fabric is gradually increased, the combination effect between the dye and the fiber can be improved, and the dyeing and color fixing effects are improved.
Preferably, in step S2, the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate.
Preferably, in step S2, the dye is added to the dye vat at 2% owf, and an acid-base buffer is added to adjust the pH to 10, followed by a temperature increase to 98 ℃ at a rate of 1 ℃/min.
Preferably, in the step S2, the reactive dyes are red M-8B, yellow M-3RE and blue M-8B reactive dyes, and the neutral dye is neutral dye of New-blue S-CF series.
As is well known, nylon fibers and cotton fibers have different chemical and physical structures and different color dyeing properties, the nylon fibers generally adopt acid dyes or neutral dyes, the dyes and the nylon fibers are mainly combined through intermolecular force and hydrogen bonds, the dyeing medium is generally weakly acidic or neutral, and the dyeing temperature is 95 ℃; while cotton fibers are generally dyed by reactive dyes, the cotton fibers are bright in color and relatively excellent in color fastness, but the cotton fibers are dyed under a neutral condition and are subjected to reaction fixation under an alkaline condition to enable the dyes to be combined with the cotton fibers through covalent bonds. In the invention, considering that the nylon fiber needs to be dyed at high temperature, the high-temperature active dyes in red M-8B, yellow M-3RE and blue M-8B are selected, because the dyeing is carried out under the condition of alkalescence (pH9.5-10.5), the neutral dyes in the S-CF series of New-blue are selected, and then the nylon and cotton fabric is pretreated by adopting a certain amount of dyeing and fixing accelerant, the dyeing degree of the nylon fiber can reach the dyeing degree of a conventional weak acid bath or neutral bath, and the nylon fiber is suitable for dyeing with the active dyes in the same bath, and both the two dyes can have good dyeing effect.
Preferably, in step S4, the steaming reduction process specifically includes: steaming and reducing the brocade and cotton fabric in a reduction steaming box, wherein the steam in the reduction steaming box is saturated steam, sodium hydroxide is adopted as a reducing agent, the treatment time is 40-60s, the dosage of the sodium hydroxide is configured according to the dosage height of the dye, when the dosage of the dye is less than or equal to 4g/L, the dosage of the sodium hydroxide is generally controlled to be 10-15g/L, and when the dosage of the dye is more than 4g/L, the dosage of the sodium hydroxide is generally controlled to be 20-25 g/L.
Preferably, in step S4, the oxidation step specifically includes: the oxidation of the cotton and nylon fabric is carried out by adopting hydrogen peroxide with the effective oxygen concentration of 1-2g/L and adjusting the pH value to 8-9 by sodium hydroxide.
Preferably, the soaping process specifically comprises: adding soaping agent 3g/L, heating to 90-95 deg.C, and maintaining the temperature for 10-20min for soaping.
Preferably, the water washing process specifically comprises: and (3) washing the nylon-cotton fabric in backflow water with the temperature of more than 70 ℃ in a horizontal washing tank.
Compared with the prior art, the invention has the following beneficial effects:
the invention changes the prior two-bath two-step dyeing method of the brocade and cotton fabric into the one-bath one-step dyeing method, is suitable for dyeing cotton fiber by reactive dye when the pH value of a dyeing medium is controlled between 9.5 and 10.5, because the alkaline environment is not suitable for dyeing the nylon fiber by neutral dye, the invention adopts the dyeing and fixing accelerant to soak the nylon-cotton fabric, so that the surface of the nylon-cotton fabric is uniformly adsorbed with sodium sulfate and sodium acetate electrolyte in advance, during subsequent dyeing, the electrolyte absorbed in the pores of the cellulose nanospheres is slowly released under the alkaline condition, so that the concentration of the electrolyte on the surface of the nylon-cotton fabric is gradually increased, can improve the binding effect between the neutral dye and the nylon fiber, leads the nylon fiber to obtain better dyeing, so that the reactive dye and the neutral dye respectively have good dyeing and color fixing effects on the polyamide fiber and the cotton fiber; in addition, two dyes and two fibers are adopted to dye in one bath and one step, so that the use of chemical products is reduced, the dyeing time is shortened, the efficiency is improved, and the energy consumption and the cost are lower.
Drawings
The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.
FIG. 1 is a flow chart of a dyeing process of a nylon-cotton fabric in the prior art;
FIG. 2 is a flow chart of a dyeing process of the nylon-cotton fabric in example 1;
FIG. 3 is a flow chart of a dyeing process of nylon/cotton fabric in comparative example 1;
FIG. 4 is a flow chart of a dyeing process of nylon/cotton fabric in comparative example 2;
FIG. 5 is a comparison graph of color depth K/S on nylon fiber of the neutral dyes of comparative example 3 and comparative example 1;
FIG. 6 is a graph comparing the color depth K/S values on cotton fibers of the reactive dyes of comparative example 4 and comparative example 1.
Detailed Description
Example 1
The embodiment provides a brocade and cotton fabric dyeing process, which is used for dyeing undyed brocade and cotton fabrics by a one-bath one-step method and comprises the following steps as shown in figure 2:
s1, soaking treatment: putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: 6, adding a dye and color fixing accelerant into the dye vat at room temperature for soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 2 g/L; the dyeing and fixing accelerant comprises the following components in parts by weight: 28 parts of sodium sulfate, 18 parts of sodium acetate and 6 parts of a dispersing agent; the dispersing agent is cellulose nanosphere and oleic acid with the mass ratio of 1: 1.2;
s2, one-bath dyeing: adding 0.8% owf of neutral dye and 1.2% owf of reactive dye into a dye vat, adding an acid-base buffering agent to adjust the pH value to 10, heating to 98 ℃ at the speed of 1 ℃/min, carrying out heat preservation dyeing for 15min, and then cooling and discharging liquid; wherein the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate; the reactive dye is blue M-8B type reactive dye, and the neutral dye is Newcastle blue S-CF neutral dye;
s3, steaming reduction: steaming the dyed nylon-cotton fabric in a reduction steaming box for reduction, wherein the steam in the reduction steaming box is saturated steam, sodium hydroxide is used as a reducing agent, and the treatment time is 40-60 s;
s4, washing: washing the nylon-cotton fabric in reverse flow water at 50-60 ℃ in a horizontal washing tank;
s5, oxidation: hydrogen peroxide with the effective oxygen concentration of 1-2g/L is adopted, the pH value is adjusted to be 8-9 by sodium hydroxide, and the hydrogen peroxide is added into an oxidation tank to oxidize the cotton-nylon fabric;
s6, soaping: putting the brocade and cotton fabric into a soaping box, adding a soaping agent with the concentration of 3g/L, heating to 90-95 ℃, and keeping the temperature for 10-20 min;
s7, washing: washing the nylon-cotton fabric in hot water flowing back at 75 ℃ in a horizontal washing tank;
and S8, drying the nylon-cotton fabric, and discharging the fabric to finish the whole dyeing process.
Example 2
The embodiment provides a brocade and cotton fabric dyeing process, which adopts a one-bath one-step method for dyeing undyed brocade and cotton fabrics, and comprises the following steps:
s1, soaking treatment: putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: 5, adding a dye and color fixing accelerant into the dye vat at room temperature for soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 4 g/L; the dyeing and fixing accelerant comprises the following components in parts by weight: 20 parts of sodium sulfate, 20 parts of sodium acetate and 8 parts of a dispersing agent; the dispersing agent is cellulose nanosphere and oleic acid with the mass ratio of 1: 1;
s2, one-bath dyeing: then adding 0.5% owf of neutral dye and 2.5% owf of reactive dye into a dye vat, adding an acid-base buffering agent to adjust the pH value to 9.5, then heating to 96 ℃ at the speed of 1 ℃/min, carrying out heat preservation dyeing for 15min, and then cooling and discharging liquid; wherein the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate; the reactive dye is red M-8B type reactive dye, and the neutral dye is neuratron red S-CF neutral dye;
s3, steaming and reducing; s4, washing with water; s5, oxidizing; s6, soaping; s7, washing with water; and S8, the drying and the cloth discharging processes can all refer to the embodiment 1.
Example 3
The embodiment provides a brocade and cotton fabric dyeing process, which adopts a one-bath one-step method for dyeing undyed brocade and cotton fabrics, and comprises the following steps:
s1, soaking treatment: putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: 8, adding a dye and color fixing accelerant into the dye vat at room temperature for soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 5 g/L; the dyeing and fixing accelerant comprises the following components in parts by weight: 34 parts of sodium sulfate, 16 parts of sodium acetate and 10 parts of a dispersing agent; the dispersing agent is cellulose nanosphere and oleic acid with the mass ratio of 1: 1;
s2, one-bath dyeing: adding 3% owf of neutral dye and 3% owf of reactive dye into a dye vat, adding an acid-base buffering agent to adjust the pH value to 10.5, heating to 100 ℃ at the speed of 1.5 ℃/min, carrying out heat preservation dyeing for 20min, and then cooling and discharging liquid; wherein the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate; the reactive dye is yellow M-3RE type reactive dye, and the neutral dye is Newcastle yellow S-CF neutral dye;
s3, steaming and reducing; s4, washing with water; s5, oxidizing; s6, soaping; s7, washing with water; and S8, the drying and the cloth discharging processes can all refer to the embodiment 1.
Example 4
The embodiment provides a brocade and cotton fabric dyeing process, which adopts a one-bath one-step method for dyeing undyed brocade and cotton fabrics, and comprises the following steps:
s1, soaking treatment: putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: 10, adding a dye and color fixing accelerant into a dye vat at room temperature for soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 1 g/L; the dyeing and fixing accelerant comprises the following components in parts by weight: 40 parts of sodium sulfate, 15 parts of sodium acetate and 9 parts of a dispersing agent; the dispersing agent is cellulose nanosphere and oleic acid with the mass ratio of 1: 1.5;
s2, one-bath dyeing: then adding 0.5% owf of neutral dye and 1% owf of reactive dye into a dye vat, adding an acid-base buffering agent to adjust the pH value to 10, then heating to 98 ℃ at the speed of 1 ℃/min, carrying out heat preservation dyeing for 15min, and then cooling and discharging liquid; wherein the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate; the reactive dye is blue M-8B type reactive dye, and the neutral dye is Newcastle blue S-CF neutral dye;
s3, steaming and reducing; s4, washing with water; s5, oxidizing; s6, soaping; s7, washing with water; and S8, the drying and the cloth discharging processes can all refer to the embodiment 1.
Comparative example 1
Comparative example 1 is a comparative test to example 1, and comparative example 1 differs from example 1 in that: comparative example 1 a conventional two bath process was used, comprising the following steps, as shown in fig. 3:
s1, soaking treatment: putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: 6, adding a dye and color fixing accelerant into the dye vat at room temperature for soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 2 g/L; wherein, the proportion of the dye fixation accelerant is the same as that of the dye fixation accelerant in the embodiment 1;
s2, treating by a two-bath method:
adding 1.2% owf of reactive dye into a dye vat at room temperature, adding an acid-base buffering agent to adjust the pH value to 10, heating to 98 ℃ at the speed of 1 ℃/min, carrying out heat preservation dyeing for 15min, then cooling, discharging liquid, soaping and washing;
adding the brocade and cotton fabric dyed by the reactive dye into a dye vat, adding 0.8% owf of neutral dye into the dye vat at room temperature, adding an acid-base buffering agent to adjust the pH value to 6, then heating to 98 ℃ at the speed of 1 ℃/min, carrying out heat preservation dyeing for 15min, and then cooling and discharging liquid; wherein the reactive dye is selected from blue M-8B type reactive dye, and the neutral dye is selected from New blue S-CF neutral dye;
the rest steaming reduction, water washing, oxidation, soaping, water washing, drying and cloth discharging processes are the same as those of the embodiment 1.
Comparative example 2
Comparative example 2 is a comparative test example of example 1, and comparative example 2 is different from example 1 in that: as shown in fig. 4, the brocade-cotton fabric in comparative example 2 was not subjected to the soaking treatment in step S1 using the dye fixing accelerator.
Comparative example 3
Comparative example 3 the process flow of example 1 was used to dye nylon fiber with neutral dye.
Comparative example 4
Comparative example 3 the procedure of example 1 was followed to dye cotton with reactive dyes.
Test examples
Firstly, the color fastness test is carried out on the dyed cotton-nylon fabric prepared in the examples 1 to 4, the comparative example 1 and the comparative example 2, and the light fastness, the washing fastness and the rubbing fastness of the dyed cotton-nylon fabric are measured by GB/T8427-1998 and GB/T3920-1997, and the test results are shown in the table 1.
TABLE 1
| Fastness to washing | Color fastness to sunlight | Fastness to rubbing | |
| Example 1 | 5 | 6 | 5 |
| Example 2 | 5 | 6 | 5 |
| Example 3 | 5 | 6 | 5 |
| Example 4 | 5 | 6 | 5 |
| Comparative example 1 | 5 | 6 | 5 |
| Comparative example 2 | 3 | 5 | 4 |
As can be seen from the test results in table 1, the color fastness of the dyed brocade and cotton fabric in comparative example 2, which is not soaked by the dyeing and fixing accelerant, is significantly lower than that of examples 1 to 4, and the color fastness of the dyed brocade and cotton fabric prepared by the one-bath one-step dyeing method in examples 1 to 4 is substantially the same as that of the dyed brocade and cotton fabric prepared by the conventional two-bath method in comparative example 1.
The dyeing depth of comparative example 1, comparative example 3 and comparative example 4 was tested, and the dyeing effect thereof is shown in fig. 5 and fig. 6, fig. 5 is a graph comparing the color depth value K/S of the neutral dyes of comparative example 3 and comparative example 1 on the nylon fiber, and fig. 6 is a graph comparing the color depth value K/S of the reactive dyes of comparative example 4 and comparative example 1 on the cotton fiber. From the results in fig. 5 and 6, it can be seen that the dyed fabric produced by the one-bath one-step dyeing method according to the present invention substantially reaches the apparent color depth value K/S of the dyed brocade-cotton fabric produced by the conventional two-bath process (comparative example 1).
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. The dyeing process of the nylon-cotton fabric is characterized in that undyed nylon-cotton fabric is dyed by a one-bath one-step method, and comprises the following steps:
s1, putting the desized nylon-cotton fabric into a dye vat, wherein the bath ratio is 1: (5-10), adding a dye and color fixing accelerant into the dye vat at room temperature, and soaking for 1-2 hours, wherein the dosage of the dye and color fixing accelerant is 1-5 g/L;
s2, adding neutral dye and reactive dye into the dye vat, adding an acid-base buffering agent to adjust the pH value to 9.5-10.5, heating to 96-100 ℃ at the speed of 1-1.5 ℃/min, carrying out heat preservation dyeing for 15-20min, and then carrying out cooling and liquid discharge, wherein the dosage of the neutral dye is 0.5-3% owf, and the dosage of the reactive dye is 1-3% owf;
s3, steaming, reducing, washing, oxidizing and soaping the dyed cotton and nylon fabric in sequence to enable the dye to fully develop color, washing, drying and discharging the fabric to finish the whole dyeing process;
in the step S1, the dye and color fixing accelerant comprises the following components in parts by weight: 20-40 parts of sodium sulfate, 15-20 parts of sodium acetate and 6-10 parts of a dispersing agent; the dispersant is cellulose nanospheres and oleic acid with the mass ratio of 1 (1-1.5).
2. The brocade and cotton fabric dyeing process according to claim 1, wherein in the step S2, the acid-base buffer is a mixture of sodium bicarbonate, sodium carbonate, sodium acetate and sodium metasilicate.
3. The brocade and cotton fabric dyeing process according to the claim 1 or 2, characterized in that in the step S2, the dye is added into the dye vat with the dosage of 2% owf, and acid-base buffer is added to adjust the pH value to 10, and then the temperature is raised to 98 ℃ with the speed of 1 ℃/min.
4. The brocade and cotton fabric dyeing process according to claim 3, wherein in the step S2, the reactive dyes are red M-8B, yellow M-3RE and blue M-8B type reactive dyes, and the neutral dyes are neutral dyes of the New blue S-CF series.
5. The brocade-cotton fabric dyeing process according to claim 1, wherein in the step S4, the steaming reduction process specifically comprises the following steps: the brocade and cotton fabric is steamed and reduced in a reduction steaming box, the steam in the reduction steaming box is saturated steam, sodium hydroxide is used as a reducing agent, and the treatment time is 40-60 s.
6. The brocade-cotton fabric dyeing process according to claim 1, wherein in the step S4, the oxidation process specifically comprises the following steps: the oxidation of the cotton and nylon fabric is carried out by adopting hydrogen peroxide with the effective oxygen concentration of 1-2g/L and adjusting the pH value to 8-9 by sodium hydroxide.
7. The brocade and cotton fabric dyeing process according to claim 1, wherein the soaping procedure specifically comprises the following steps: adding soaping agent 3g/L, heating to 90-95 deg.C, and maintaining the temperature for 10-20min for soaping.
8. The brocade-cotton fabric dyeing process according to claim 1, wherein the water washing process specifically comprises the following steps: and (3) washing the nylon-cotton fabric in backflow water with the temperature of more than 70 ℃ in a horizontal washing tank.
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