CN116676796A - Cotton-nylon blended one-bath dyeing method - Google Patents
Cotton-nylon blended one-bath dyeing method Download PDFInfo
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- CN116676796A CN116676796A CN202310577170.5A CN202310577170A CN116676796A CN 116676796 A CN116676796 A CN 116676796A CN 202310577170 A CN202310577170 A CN 202310577170A CN 116676796 A CN116676796 A CN 116676796A
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- 229920001778 nylon Polymers 0.000 title claims abstract description 90
- 238000004043 dyeing Methods 0.000 title claims abstract description 88
- 239000004677 Nylon Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000000376 reactant Substances 0.000 claims abstract description 77
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000002203 pretreatment Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 238000009987 spinning Methods 0.000 claims abstract 8
- 238000002156 mixing Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 229920000742 Cotton Polymers 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000002759 woven fabric Substances 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 41
- 239000000985 reactive dye Substances 0.000 description 6
- 239000000980 acid dye Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920006052 Chinlon® Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 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 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000006367 bivalent amino carbonyl group Chemical group [H]N([*:1])C([*:2])=O 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- -1 vinyl sulfone trichloropyrimidine series Chemical class 0.000 description 1
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
- 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
-
- 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
- D06P1/44—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
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses a cotton-nylon blended spinning one-bath dyeing method, which comprises the steps of pre-dyeing cotton-nylon blended spinning, adding a pre-treatment reactant A, a pre-treatment reactant B and a pre-treatment reactant C into the cotton-nylon blended spinning, wherein the pre-treatment reactant A is Na 2 CO 3 Pretreatment reactant B is H 2 O 2 The pretreatment reactant C is a deoiling auxiliary agent, the dyeing method breaks through the traditional two-bath dyeing method, the novel dyeing technology can dye two kinds of blend fibers with different performances at the same time, the dyeing quantity and the chromatic light of the fabric fibers are basically one to one, the dyeing time is greatly shortened, and the equipment utilization rate is used for producing the discharge rateThe dyeing process has the advantages of remarkably improving, saving a large amount of dyeing water, greatly reducing the COD value of dyeing residual liquid, saving the sewage treatment cost, along with simple one-bath dyeing technology process, convenient production and operation, stable dyeing effect, good color reproducibility, high one-time success rate, and smooth and full color of the woven fabric and excellent color fastness, and one type of dye is used for simultaneously dyeing two kinds of cotton/nylon fibers.
Description
Technical Field
The invention relates to the technical field of cotton-nylon blending, in particular to a one-bath dyeing method for cotton-nylon blending.
Background
Along with the going of people for good life, the fashion style is required to be novel and the color is gorgeous; meanwhile, the requirements on health and ecological environment are higher, the traditional nylon dyeing is an acidic dye which is a water-soluble dye with an acidic group on the structure, the dye is anionic in aqueous solution and is dyed under an acidic condition, the dye contains metal ions, the environment is polluted, meanwhile, the health of people is affected, and particularly, the color fastness cannot meet the requirements on the production of woven fabrics, and the reactive dye can achieve the dyeing performance of the nylon according to the requirements on different dyeing concentrations through technological innovation.
The reactive dye is a water-soluble dye with reactive groups on chemical structures, and comprises a dye matrix and active groups, wherein the dye matrix is formed by the fact that a color body of the dye is similar to an acid dye, the active groups are connected with the color body, the dye is endowed with the capability of reacting with fibers, in the dyeing process, the dye is absorbed by the fibers and reacts with functional groups of hydroxyl (-OH) or amino (-NH 2) of the fibers, then under the action of a neutral bath and an accelerant A, the sulfonic groups on the structure of the dye matrix are combined with nylon fibers in an ionic bond mode to dye, and for dark color series and varieties with high color fastness requirements, vinyl sulfone trichloropyrimidine series dye structures are selected to be optimal.
The varieties of nylon used as textile fibers include nylon 6 and nylon 66, the dyeing principle is the same, and the chemical structural formulas are respectively as follows:chinlon 6 { NH (NH) 2 ) 5 CO} n Chinlon 66:
{NH(CH 2 ) 6 NHCO(CH 2 ) 4 } n the macromolecular chain of the fiber contains a large number of fatty amine bonds (-CONH-), and the two ends of the fiber molecule contain amino and hydroxyl. The amino content of the nylon 6 is higher than that of the nylon 66, and the dyeing rate of the nylon 6 is higher under the same dyeing condition.
The dye and nylon ion bonds are combined to a certain limit, a saturation value exists, the dyeing saturation value depends on the quantity of amino groups in the fiber, the dyeing depth and the maximum consumption of the dye are directly related, the dyeing saturation value exceeds the quantity of amino groups, the dye and the fiber are combined in an ionic bond mode, meanwhile, the hydrogen bond and the Van der Waals force play a role in underestimation, two or more dyes are needed to be combined in production practice, the dyeing phenomenon is easy to generate due to the difference of the dyeing rate and the dyeing performance between the dyes, the front-back color difference is caused, sometimes, the good color matching effect is not achieved, if the color matching performance of the dyes in the dyeing formula is similar, the color matching rate of the same group of dyes is kept balanced, and then the color of the dyed fiber and the dyeing liquid of the dyed fiber at each stage of dyeing is not fluctuated along with the change of dyeing time and process conditions.
The cotton-nylon blend fiber is a composite yarn prepared by mixing two fibers with different performances of cotton and nylon, and the elastic stretch and rebound resilience of the nylon fiber are utilized to realize the complementary advantages of the two fibers on performance by utilizing the advantages of comfortable hand feeling, moisture absorption, ventilation and good skin-friendly property of the cotton fiber.
The dyeing industry is a large household consuming electricity and discharging sewage, the national work of energy conservation, emission reduction and ecological environment protection is enhanced, the environmental protection pressure of the related series of pollution reduction and pollution discharge environments is formulated, the traditional two-bath method dyeing has long production flow, consumes a large amount of water and electricity vapor, dyes and has high production cost and serious environmental pollution, and for this reason, the cotton-nylon blended one-bath dyeing method is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems of long production flow, consumption of a large amount of water, electricity and steam, high dyeing material, high production cost, serious environmental pollution and the like of the traditional two-bath method dyeing, and provides a cotton-nylon blended one-bath dyeing method.
The technological process of dyeing cotton fiber includes the following steps: the reactive dye and cellulose form covalent bond combination under alkaline condition, and little dyeing theory is adopted, the reactive dye is used for dyeing cotton fiber firstly, then the acid dye is used for the sleeve dyeing of nylon, and vinyl sulfone with better acid resistance or the reactive dye with double active groups is selected during sleeve dyeing, so that the dye reacts with cellulose to form ether bond combination, the acid-base stability is good, the condition that the reactive dye is broken by an acid medium to fade can be reduced, the cotton/nylon blend fiber is required to be pretreated before dyeing, so that impurities and greasy dirt on the fiber are eliminated, and good whiteness is given to the fiber, so that the dyeing color uniformity is achieved.
The polyamide fiber has large amount of amide bond (-CONH-) in the molecular chain and amine group and hydroxyl group at two ends of the fiber molecule and small amount of acetamido, and the acid dye is combined with polyamide fiber in ionic bond of D-S0 3 -+NH 3 +-M-COOH→D-S0 3 .H 3 N-COOH, nylon is a thermoplastic synthetic fiber, the hydrophilicity is poor, the nylon is not easy to expand in water, the pH value of the dye liquor and the dyeing temperature are main process factors, some dyes are sensitive to the pH value change of the dye liquor, the dyeing rate is increased along with the decrease of the pH value, and the dyes are sensitive to the temperature, the dyes are fast to dye when the temperature of the dyes is increased to 98 ℃, so that the acid dyeing process needs to be specially controlled, the dyes are easy to aggregate when the temperature of the acid dyes is low in the neutral dye liquor, the dyeing rate is low, the dyeing temperature is controlled to be 60 ℃, and the dyeing temperature is slowly increased to 98 ℃ at the moment and is kept for a certain time, so that the stable color effect is obtained.
The preparation before dyeing is important, the cone forming is uniform, the ring casting density is controlled to be 0.33-0.35, a long tube is used, the single weight is 0.8 gkg/piece, the tension in the production process of a warp beam is one, the axial surface is flat and cannot have tightness, and the ring casting density is processed by a central shaft between 430 and 450.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a cotton-nylon blended one-bath dyeing method comprises the following steps:
the first step: pre-dyeing cotton-nylon blended yarn, adding a pre-treatment reactant A, a pre-treatment reactant B and a pre-treatment reactant C into the cotton-nylon blended yarn, wherein the pre-treatment reactant A is Na 2 CO 3 Pretreatment reactant B is H 2 O 2， The pretreatment reactant C is a deoiling auxiliary agent; heating cotton-nylon blending, wherein the heating speed is 1 ℃/min, the heating time is 38-42 min, and the temperature is finally raised to 100-110 ℃;
and a second step of: after heating, the cotton-nylon blending temperature is reduced to 78-82 ℃ within 8-12 min, and hot water washing is carried out while cooling;
and a third step of: cooling to 48-52 deg.c, maintaining for 8-12 min, and adding reactant D to neutralize, wherein the reactant D is HAC;
fourth step: dyeing cotton-nylon blended yarn, adding neutral dye (1) and reactant (2), wherein the reactant (1) is neutral dye, and the reactant (2) is Na 2 SO 4， Simultaneously heating at the speed of 0.7 ℃/min for 28-32 min, finally heating to 96-99 ℃, preserving heat for 30min, then cooling to 60 ℃ and running for 5min, adding a reactant (3), wherein the reactant (3) is surrogate alkali, and maintaining the temperature of the cotton-nylon blended mixture at 58-62 ℃ for 48-52 min;
fifth step: maintaining the temperature of the cotton-nylon blending and mixture at 48-52 ℃ for 8-12 min;
sixth step: performing post-treatment soaping on cotton-nylon blending, adding 1.8-2.2g/L of soaping agent, maintaining the temperature of the cotton-nylon blending at 98-102 ℃ during soaping for 18-22 min, and performing dark soaping twice;
seventh step: after soaping, maintaining the cotton-nylon blended yarn at 48-52 ℃ for 8-12 min;
eighth step: and (3) carrying out color fixation on the cotton-nylon blended yarn to be too soft, and maintaining the cotton-nylon blended yarn at 48-52 ℃ for 18-22 min during color fixation.
Preferably, the concentration of the reactant A in the first step is 3.0-5.0g/L, the concentration of the reactant B is 4.0g/L, and the concentration of the reactant C is 2.0g/L. And heating the cotton-nylon blended yarn with the pretreatment reactant A, the pretreatment reactant B and the pretreatment reactant C to finally raise the temperature to 105 ℃, so that the added auxiliary agent can fully react at high temperature, oil stains and impurities in the blended yarn are removed completely, and the permeability and whiteness of the yarn are improved.
Preferably, the second step reduces the cotton-nylon blending temperature to 80 ℃ and maintains the temperature for 10 minutes, so that the chemical auxiliary agent and impurities on the fibers can be removed further.
Preferably, the third step reduces the cotton-nylon blending temperature to 50 ℃, and the dosage of the reactant D is 0.5g/L, and the maintaining time is 10min, so that the PH value on the blended fiber is conveniently neutralized.
Preferably, the fourth step is to add the neutral dye (1) and the reactant (2), the temperature is finally raised to 98 ℃, the temperature is kept for 30min, then the temperature is lowered to 60 ℃ and the operation is carried out for 5min, and the reactant 3 is added as the surrogate alkali, so that the temperature of the cotton-nylon blended yarn and the mixture is maintained to 60, the blended yarn is convenient to dye uniformly, the phenomena of color difference of color flowers and the like are prevented, and the dye uptake is improved.
Preferably, the fifth step maintains the temperature of the cotton-nylon blended yarn and the mixture at 50 ℃ for 10min, so that the unreacted dye on the blended yarn is conveniently washed out.
Preferably, the sixth step of soaping maintains the cotton-nylon blending temperature at 100 ℃ for 20min, so that the floating color which is not dyed on the blending fiber is conveniently removed, and the color vividness and the color fastness are improved.
Preferably, the cotton-nylon blended yarn is maintained at 50 ℃ for 10min after the seventh step of soaping, so that floating color impurities on the fiber can be further washed out.
Compared with the prior art, the invention has the beneficial effects that:
the dyeing method breaks through the traditional two-bath dyeing method, the novel dyeing technology can dye two kinds of blend fibers with different properties at the same time, the dyeing quantity and the chromatic light of the fabric fibers are basically one to one, the dyeing time is greatly shortened, the production and discharge rate of equipment utilization rate is obviously improved, a large amount of dyeing water is saved, the COD value of dyeing residual liquid is greatly reduced, the sewage treatment cost is saved, the one-bath dyeing technology is simple in process, the production operation is convenient, the dyeing effect is stable, the color reproducibility is good, the one-time success rate is high, one type of dye can dye cotton/nylon two kinds of fibers at the same time, the color of the woven fabric is smooth, the color is full, and the color fastness is excellent.
Drawings
FIG. 1 is an overall flow chart of a cotton-nylon blended one-bath dyeing method provided by the invention;
fig. 2 is a schematic diagram of the overall flow of a conventional two-bath method of a cotton-nylon blended one-bath dyeing method according to the invention;
fig. 3 is a schematic diagram of a conventional two-bath cotton fiber dyeing process of a cotton-nylon blended one-bath dyeing method according to the present invention;
fig. 4 is a schematic diagram of dyeing nylon fiber by a traditional two-bath method of a cotton-nylon blended one-bath dyeing method.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
With reference to figures 1-4 of the drawings,
a cotton-nylon blended one-bath dyeing method,
the first step: dyeing pretreatment is carried out on cotton-nylon blended yarn, and a pretreatment reactant A, a pretreatment reactant B and a pretreatment reactant C are added into the cotton-nylon blended yarn, wherein the pretreatment reactant A is Na 2 CO 3 Pretreatment reactant B is H 2 O 2， The pretreatment reactant C is a deoiling auxiliary agent, the concentration of the pretreatment reactant A is 3g/L, the concentration of the pretreatment reactant B is 2g/L, the concentration of the reactant C is 0.5g/L, cotton-nylon blending added with the pretreatment reactant A, the pretreatment reactant B and the pretreatment reactant C is heated, the heating rate is 1 ℃/min, the heating time is 40min, and the temperature is finally raised to 105 ℃;
and a second step of: after heating, the cotton-nylon blending temperature is reduced to 80 ℃ within 10min, and hot water washing is carried out while cooling;
and a third step of: cooling to 50 ℃, maintaining for 10min, and adding a reactant D for neutralization, wherein the reactant D is HAC (acetic acid), and the reactant D is 0.5g/L;
fourth step: dyeing cotton-nylon blended yarn, adding reactant (1) and reactant (2), wherein reactant (1) is dye, and reactant (2) is Na 2 SO 4， And heating at the same time, wherein the heating speed is 0.7 ℃/min, the heating time is 28min-32min, the temperature is finally increased to 96 ℃ -99 ℃, the temperature is kept for 30min, then the temperature is reduced to 60 ℃ and the operation is carried out for 5min, the reactant (3) is added, the reactant (3) is substituted alkali, the cotton-nylon blending and mixture temperature is kept at 60 ℃, and the holding time is 450min.
Table of new technical examples of one bath dyeing: cotton-nylon blend fiber (50:50)
List one
Fifth step: maintaining the temperature of the cotton-nylon blending and mixture at 50 ℃ for 10min;
sixth step: performing post-treatment soaping on the cotton-nylon blended yarn, adding 2g/L of soaping agent, maintaining the temperature of the cotton-nylon blended yarn at 100 ℃ during soaping for 20min, and performing dark soaping twice;
eighth step: and (3) carrying out color fixation on the cotton-nylon blended yarn to be too soft, and keeping the cotton-nylon blended yarn at 50 ℃ for 20min during color fixation.
The production and processing cost of the cotton-nylon blended one-bath dyeing method is compared with the situation: as shown in table two:
watch II
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. A cotton-nylon blended one-bath dyeing method is characterized in that:
the first step: pre-dyeing cotton-nylon blended yarn, adding a pre-treatment reactant A, a pre-treatment reactant B and a pre-treatment reactant C into the cotton-nylon blended yarn, wherein the pre-treatment reactant A is Na 2 CO 3 Pretreatment reactant B is H 2 O 2， The pretreatment reactant C is a deoiling auxiliary agent; heating cotton-nylon blending materials added with a pretreatment reactant A, a pretreatment reactant B and a pretreatment reactant C at a heating rate of 1 ℃/min for 38-42 min, and finally raising the temperature to 100-110 ℃;
and a second step of: after heating, the cotton-nylon blending temperature is reduced to 78-82 ℃ within 8-12 min, and hot water washing is carried out while cooling;
and a third step of: cooling to 48-52 ℃, maintaining for 8-12 min, and adding reactant D for neutralization, wherein reactant D is HAC (acetic acid) and is 0.5g/L;
fourth step: dyeing cotton-nylon blended yarn, adding reactant (1) and reactant (2), wherein reactant (1) is neutral dye, and reactant (2) is Na 2 SO 4， And heating at the same time, wherein the heating speed is 0.7 ℃/min, the heating time is 28-32 min, and the temperature is finally increased to 96-99 ℃. Maintaining the temperature for 30 minutes, cooling to 60 ℃ and then operating for 5 minutes, adding a reactant (3), wherein the reactant (3) is surrogate alkali, and maintaining the temperature of cotton-nylon blending and mixture at 58-62 ℃ for 48-52 minutes;
fifth step: maintaining the temperature of the cotton-nylon blending and mixture at 48-52 ℃ for 8-12 min;
sixth step: performing post-treatment soaping on cotton-nylon blending, adding 1.8-2.2g/L of soaping agent, maintaining the temperature of the cotton-nylon blending at 98-102 ℃ during soaping for 18-22 min, and performing dark soaping twice;
seventh step: after soaping, maintaining the cotton-nylon blended yarn at 48-52 ℃ for 8-12 min;
eighth step: and (3) carrying out color fixation on the cotton-nylon blended yarn to be too soft, and maintaining the cotton-nylon blended yarn at 48-52 ℃ for 18-22 min during color fixation.
2. The cotton-nylon blended one-bath dyeing method according to claim 1, wherein the concentration of the pretreatment reactant A is 3-5g/L, the concentration of the pretreatment reactant B is 4g/L, and the concentration of the reactant C is 2.0g/L.
3. The one-bath dyeing method for cotton-nylon blended yarn according to claim 1, wherein the first step is to heat the cotton-nylon blended yarn added with the pretreatment reactant A, the pretreatment reactant B and the pretreatment reactant C to a final temperature of 105 ℃.
4. The one-bath dyeing method for cotton-nylon blended spinning according to claim 1, wherein the second step is to reduce the cotton-nylon blended spinning temperature to 80 ℃ and the maintenance time is 10min.
5. The one-bath dyeing method for cotton-nylon blended spinning according to claim 1, wherein the third step is to reduce the cotton-nylon blended spinning temperature to 50 ℃, and add reactant D, namely HAC, to neutralize at 0.5g/L, and the holding time is 10min.
6. The method for dyeing cotton-nylon blended yarn in one bath according to claim 1, wherein the fourth step is to add the neutral dye of the reactant (1) and the reactant (2), heating for 30min, raising the temperature to 98 ℃ finally, preserving the temperature for 30min, and then cooling.
7. The one-bath dyeing method for cotton-nylon blended yarn according to claim 1, wherein the sixth step is to maintain the temperature of the cotton-nylon blended yarn and the mixture at 60 ℃ and to add the reactant 3 for 50min.
8. The one-bath dyeing method for cotton-nylon blended yarn according to claim 1, wherein the seventh step is to maintain the temperature of the cotton-nylon blended yarn and the mixture at 60 ℃ and the maintaining time of adding the reactant 3 is 50min.
9. The one-bath dyeing method for cotton-nylon blended spinning according to claim 1, wherein the eighth step of soaping is carried out at a temperature of 100 ℃ for 20min.
10. The one-bath dyeing method for cotton-nylon blended yarn according to claim 1, wherein the cotton-nylon blended yarn is maintained at 50 ℃ for 10min after the nine-step fixation is too soft.
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