CN113355925B - Nylon four-side elastane dyeing process - Google Patents
Nylon four-side elastane dyeing process Download PDFInfo
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- CN113355925B CN113355925B CN202110699285.2A CN202110699285A CN113355925B CN 113355925 B CN113355925 B CN 113355925B CN 202110699285 A CN202110699285 A CN 202110699285A CN 113355925 B CN113355925 B CN 113355925B
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- 238000004043 dyeing Methods 0.000 title claims abstract description 92
- 229920001778 nylon Polymers 0.000 title claims abstract description 43
- 239000004677 Nylon Substances 0.000 title claims abstract description 42
- 229920002334 Spandex Polymers 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 119
- 239000000975 dye Substances 0.000 claims abstract description 95
- 239000000434 metal complex dye Substances 0.000 claims abstract description 32
- 239000004759 spandex Substances 0.000 claims abstract description 30
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 239000003086 colorant Substances 0.000 claims abstract description 9
- 238000009998 heat setting Methods 0.000 claims abstract description 5
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 68
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 239000003795 chemical substances by application Substances 0.000 claims description 43
- 238000004140 cleaning Methods 0.000 claims description 21
- 238000007670 refining Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 150000001450 anions Chemical class 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 125000000129 anionic group Chemical group 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 6
- 238000004383 yellowing Methods 0.000 claims description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000000344 soap Substances 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004753 textile Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 27
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 24
- 239000000835 fiber Substances 0.000 description 13
- 239000002243 precursor Substances 0.000 description 11
- 230000000630 rising effect Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000000980 acid dye Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 239000000986 disperse dye Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- FCZCIXQGZOUIDN-UHFFFAOYSA-N ethyl 2-diethoxyphosphinothioyloxyacetate Chemical compound CCOC(=O)COP(=S)(OCC)OCC FCZCIXQGZOUIDN-UHFFFAOYSA-N 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000009981 jet dyeing Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002759 woven fabric Substances 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
- 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
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
- D06B23/22—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation for heating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/653—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
- D06P3/8209—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing 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
- 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 application relates to the field of textile dyeing and finishing, and particularly discloses a nylon four-side elastane dyeing process. A nylon four-side elastane dyeing process comprises the following steps: s1, preprocessing grey cloth; s2, presetting: heat setting the pretreated grey cloth at a speed of 25-35m/min for 35-45s at a temperature of 195-210 ℃; s3, dyeing: performing overflow dyeing on the pre-shaped grey cloth in a dye liquor through a one-bath one-step method under the condition of pH=3-6, wherein the dye liquor comprises 2-2.5% (omf) of 1:2 metal complex dye, 0.5-1.0% (omf) of 1:1 metal complex dye and 0.6-0.8% (omf) of spandex coloring agent; s4, soaping; s5, dewatering and opening; s6, shaping a finished product; s7, winding the finished product. The application has the effects of improving the dyeing degree of the dye on nylon and spandex and improving the color fastness and the dyeing uniformity in the dark dyeing process of the fabric.
Description
Technical Field
The application relates to the field of textile dyeing and finishing, in particular to a nylon four-side elastane dyeing process.
Background
The four-side stretch fabric is a fabric which is formed by twisting elastic spandex together with yarns and weaving the spandex, has excellent elasticity in the upper, lower, left and right directions, has good wearability, is inoculated for endowing the fabric with excellent wear resistance, is formed by blending nylon and spandex, and is widely applied to the preparation of products such as outdoor casual trousers, jackets and the like.
In order to endow the fabric with different colors, the woven fabric is generally subjected to dye treatment before the fabric is processed into clothes, and nylon and spandex can be dyed by disperse dye, acid dye, 1:2 metal complex dye and other dyes at the temperature below 100 ℃.
Nylon and disperse dye are dyed through intermolecular force, but only by means of the combination of the intermolecular force, the dyed fabric has good dyeing uniformity and poor deepening performance; the nylon and the acid dye are combined through ionic bonds, so that the dyed fabric has good brightness, but has the problem of poor color fastness.
In view of the above-mentioned related art, the inventors consider that nylon four-sided bullets have problems of poor color fastness and poor leveling property in the process of dyeing in a dark color.
Disclosure of Invention
The application provides a nylon four-side elastane dyeing process for improving the dyeing degree of dye on nylon and spandex and improving the color fastness and the uniformity in the dark dyeing process of fabrics.
The four-side elastane dyeing process for nylon provided by the application adopts the following technical scheme:
a nylon four-side elastane dyeing process comprises the following steps: s1, preprocessing grey cloth;
s2, presetting: heat setting the pretreated grey cloth at a speed of 25-35m/min for 35-45s at a temperature of 195-210 ℃;
s3, dyeing: performing overflow dyeing on the pre-shaped grey cloth in a dye liquor through a one-bath one-step method under the condition of pH=3-6, wherein the dye liquor comprises 2-2.5% (omf) of 1:2 metal complex dye, 0.5-1.0% (omf) of 1:1 metal complex dye and 0.6-0.8% (omf) of spandex coloring agent;
s4, soaping;
s5, dewatering and opening;
s6, shaping a finished product;
s7, winding the finished product.
By adopting the technical scheme, the uneven tension of nylon and spandex in spinning drafting and weaving processing can be eliminated or reduced by presetting, the excessive relaxation of elastic yarns in subsequent procedures is improved, and the weft density is increased; in addition, as more terminal amino groups exist in the nylon, the 1:1 metal complex dye is easy to combine with the nylon, the amino number of the nylon can be reduced by presetting at 195-210 ℃, so that the co-dyeing property of the dye on the nylon and the spandex is improved, in addition, the 1:2 metal complex dye and the 1:1 metal complex dye have excellent deep dyeing property on the nylon and the spandex, the dyeing processes of the two dyes are similar, the two dyes have good co-bath adaptability after being compounded, the subsequent one-step one-bath dyeing is facilitated, the reactive groups in the dye liquor can be increased by compounding the two dyes, and the vividness and the color fastness of the dyed fiber are comprehensively improved; the possibility of aggregation of the two dyes can be improved by adding the anion leveling agent, so that the dye is dispersed more uniformly, the uniformity of dyeing in the dye liquor is improved, and when the pH=4-6, the dyeing effect of the 1:2 metal complex dye and the 1:1 metal complex dye on the fabric containing nylon and spandex is optimal.
Preferably, the preparation of the dye liquor in the step S3 specifically comprises the following steps: adding a chelating dispersant into water, mixing and stirring uniformly to obtain a mixed solution, wherein the mass concentration of the chelating dispersant in the mixed solution is 1.0-1.5g/L, adding 2-2.5% (omf) of 1:2 metal complex dye, 0.5-1.0% (omf) of 1:1 metal complex dye, 1.0-2.0 (omf) of anion leveling agent and 1.0-2.0% (omf) of anion leveling agent into the mixed solution, and then performing ultrasonic dispersion uniformly to obtain the dye liquor.
Through adopting above-mentioned technical scheme, through adding chelate dispersant to dye the water, reduce the possibility that calcium, magnesium ion and dye negative charge complex ion combine in the ordinary water, make dyestuff and fibre fully dye, thereby improve the colour fastness and the vividness of surface fabric after dyeing, and chelate dispersive mass concentration is 1.0-1.5g/L, it is optimal with two kinds of dyestuff compound effect, in addition, through adding spandex colorant DYETEEX, be favorable to improving the deep dyeing and the dye uptake of spandex, the supersound dispersion reduces the aggregate depolymerization of dyestuff, and can break up the large granule material in the dyestuff, thereby improve the homogeneity of dye liquor, be favorable to improving the homogeneity degree of follow-up dyeing.
Preferably, the pretreatment of the grey cloth in S1 specifically includes the following steps:
s11, rolling the blank cloth in a tension-free manner;
s12, pre-shrinking: under the conditions of T=95-105 ℃ and water bath ratio of 1 (30-40), carrying out heat preservation treatment on the blank cloth which is coiled in a tension-free way in pretreatment liquid for 60-80min at the speed of 40-50 m/min; wherein the pretreatment liquid contains sodium hydroxide and a refining agent;
s13, multi-stage water washing.
By adopting the technical scheme, as the sodium hydroxide is adopted to treat the fabric, on one hand, dirt and oily substances of the nylon and the spandex in the spinning process can be removed, and the sodium hydroxide can not damage the nylon and the spandex, so that on the other hand, the nylon can be pre-contracted, and the fabric becomes compact and elastic; as a large amount of organosilicon-containing lubricant is generally used in the weaving process of the spandex, the surface of the spandex can be further improved by adding a refining agent, thereby being beneficial to subsequent dyeing; and the pretreatment liquid compounded by the sodium hydroxide and the refining agent can comprehensively improve the pre-shrinkage effect, so that the dyeing uniformity of the dye liquor on the fabric is further improved.
Preferably, the multi-stage cleaning in S13 specifically includes the following steps:
s131: carrying out primary cleaning on the pre-shrunk grey cloth in the step S12 by clear water at the temperature of T=88-95 ℃;
s132: carrying out secondary cleaning on the grey cloth subjected to primary cleaning in the step S131 by clear water at the temperature of T=75-85 ℃;
s133: and (3) carrying out third-stage cleaning on the gray fabric subjected to the second-stage cleaning in the step (S132) at the temperature of T=55-65 ℃ through clear water.
By adopting the technical scheme, residual pretreatment liquid carried by the pre-shrunk grey cloth can be removed by multistage water washing, and the residual pretreatment liquid is prevented from affecting the connection between dye molecules and fibers, so that the color fastness of the fabric is improved; in addition, the fabric is further pre-shrunk by washing at different temperatures, so that the flexibility and the hand feeling of the fabric are improved.
Preferably, the dyeing of S3 specifically includes the following steps:
s31, entering dyeing: at 35-40 ℃, at ph=3-6 conditions and water bath ratio of 1: (8-12) conveying the embryo cloth into the dye liquor under the condition;
s32, heating: heating to 55-60deg.C at a speed of 0.3-1.5 deg.C/min, maintaining for 10-15min, heating to 105-110deg.C at a speed of 0.3-1.5 deg.C/min, and maintaining for 65-80min;
s33, color fixation: and adding a color fixing agent to perform color fixing treatment.
By adopting the technical scheme, the dye dyeing comprises two steps, wherein the first step is that the dye firstly enters the inside of the fiber, and the dyeing degree is influenced by the amount of the dye entering the inside of the fiber; secondly, dye molecules are transferred on the fibers, and the transfer dyeing degree can influence the deep dyeing effect of the fabric; the glass transition temperature of nylon is 47-50 ℃, so if the dyeing temperature is higher than the temperature, the dye rapidly enters the nylon fiber to easily cause uneven dyeing of the nylon, and the dyeing temperature is limited, so that the dyeing uniformity of the nylon and spandex is improved; in addition, the temperature is kept at 55-60 ℃ to be beneficial to nylon average dyeing and permeance dyeing, and the temperature is kept at 105-110 ℃ for 65-80min to be beneficial to dyeing of the dye on nylon and spandex.
Preferably, the heating in S32 specifically includes the following steps:
s321, heating in the first step: heating to 55-60deg.C at a speed of 0.3-1.5 deg.C/min, and maintaining for 10-15min;
s322, heating in the second step: heating to 75-85deg.C at a speed of 0.3-1.5 deg.C/min, and maintaining for 15-25min;
s323, heating in a third step: then heating to 95-105 ℃ at the speed of 0.3-1.5 ℃/min, adjusting to pH=4-5, and preserving heat for 50-60min.
By adopting the technical scheme, the dyeing speeds of the two dyes are in direct proportion to the dyeing temperature, the dyeing is carried out by heating to 55-60 ℃, the diffusion of the dyes into the fiber can be promoted, the dyeing is facilitated by heating to 75-85 ℃, and the color fastness is improved; heating to 95-105 ℃ to promote the dye combined with the dye to transfer on the fiber, thereby being beneficial to improving the depth of the dye; in addition, the dye has different dyeing degrees on different fibers under different pH value environments, nylon is easy to dye when the pH value is higher, spandex is easy to dye when the pH value is lower, and the dyeing degree of the dye on the spandex is enhanced by controlling the heat preservation time after the pH value is=4-5, so that the overall dyeing uniformity of the fabric is improved.
Preferably, the temperature rising rate of the first step of temperature rising in the S321 is 1.2-1.5 ℃/min; the temperature rising rate of the second step of temperature rising in S322 is 0.8-1.0 ℃/min; the temperature rising rate of the third step of temperature rising in S323 is 0.3-0.7 ℃/min.
By adopting the technical scheme, the dyeing speeds of the two dyes are in direct proportion to the heating speed, and the higher the heating speed is, the higher the dye dyeing rate is, but the color fastness is not high at the moment; the slower the temperature rise, the lower the dye-uptake, but the color fastness is improved, so the phenomena of racing and dyeing can be reduced by limiting the temperature rise rates of different temperatures.
Preferably, the step of fixing in S33 specifically includes: cooling to 65-75deg.C at a speed of 1.0-1.5 deg.C/min, adjusting pH=4.0-4.5, adding 1.5-2% (omf) anionic color fixing agent, and maintaining for 15-20min; continuously adding 1-1.5% (omf) anionic color fixing agent, and maintaining the temperature for 20-30min.
By adopting the technical scheme, the color fastness of the dye on the fiber can be further improved through the anionic color fixing agent, and the color fixing effect of the curing agent on the fabric can be improved by adding the color fixing agent in batches at 65-75 ℃ and pH=4-5, so that the color fastness of the fabric is improved.
Preferably, the step of soaping in S4 specifically includes: cooling to 45-50 ℃ at a speed of 1.2-1.8 ℃/min, soaking the dyed grey cloth in a soap washing liquid for 20-30min under the condition of a water bath ratio of 1 (25-30), and then soaking in a shaping liquid for 10-15min, wherein the shaping liquid is an anti-phenolic yellowing agent mixed liquid with a mass concentration of 35-40 g/L.
By adopting the technical scheme, the floating color on the surface of the fabric can be removed by soaping, and the quality of the product is improved at the temperature; the yellowing of the fabric in the storage process can be comprehensively improved by compounding the anti-phenolic yellowing agent and the anti-thermal yellowing agent.
Preferably, the shaping step of the finished product in S6 specifically includes: setting the grey cloth dehydrated and opened in the step S5 for 100-110 seconds at the speed of 35-45m/min under the conditions of pH=4-5 and the temperature of 150-160 ℃.
By adopting the technical scheme, the color fastness of the dye on the fabric can be comprehensively improved by limiting the pH value, the shaping temperature and the shaping time of shaping.
In summary, the application has the following beneficial effects:
1. according to the application, through setting the pre-shaping step, on one hand, the tension generated by nylon and spandex in spinning and weaving can be eliminated or reduced, and the excessive relaxation of elastic yarns in subsequent procedures can be reduced, and on the other hand, the amino number of nylon can be reduced, so that the uniformity of dye on nylon and spandex is realized; in addition, the pH value of the incoming dyeing is regulated by compounding the 1:2 metal complex dye, the 1:1 metal complex dye and the anion leveling agent, so that the fastness and the deep dyeing property of the dye liquor are improved;
2. the dye-entering time is limited, and the temperature is raised, so that the color fastness and the dyeing uniformity between the dye and the fiber are further improved.
Detailed Description
The present application will be described in further detail below.
Fabric and raw material for dyeing
A fabric: nylon four-sided stretch fabric (warp density 38, weft density 25)
TABLE 1 Table of sources of raw materials used in the application
Preparation example 1
Preparation example 1
The dye liquor is prepared by the following steps: at 92 ℃, 1200g of chelating dispersant is added into dye dispersing machine (ultrasonic dye dispersing machine with model HSS20-1000, shanghai) and is stirred for 20min at a rotating speed of 200rpm by ultrasonic equipment combined with a stirrer matched with a reaction tank, so as to obtain uniform mixed solution with the chelating dispersant mass concentration of 1.2g/L, and 2.3% (omf) of 1:2 metal complex dye, 0.8% (omf) of 1:1 metal complex dye, 0.7% (omf) of spandex colorant DYETEX and 1.5% (omf) of anion leveling agent are added into the mixed solution, and then ultrasonic dispersion is carried out uniformly to obtain dye solution.
Preparation examples 2 to 10
The preparation examples 2 to 10 differ from the preparation example 1 in that: the composition and amount of the dye solutions are different, and are shown in Table 2.
TABLE 2 raw material composition and amount of dye liquor in preparation examples 1 to 10
PREPARATION EXAMPLE 11
The present preparation example differs from preparation example 1 in that: the chelating dispersant is not added in the preparation process of the dye liquor.
Preparation example 12
The present preparation example differs from preparation example 1 in that: the dye liquor is prepared by adding 2.3% (omf) of 1:2 metal complex dye, 0.8% (omf) of 1:1 metal complex dye, 0.7% (omf) of spandex coloring agent DYETEEX and 1.5% (omf) of anion dye leveler into the mixed liquor and uniformly stirring at a rotating speed of 200 rpm.
Preparation example 13
The soap lotion is prepared by the following steps: after 900g of the soaping agent was added to water, the mixture was stirred at 250rpm for 15 minutes to prepare a soaping agent having a mass concentration of 4.5 g/L.
PREPARATION EXAMPLE 14
The preparation of the shaping liquid comprises the following steps: after 740g of the soaping agent was added to water, the mixture was stirred at 250rpm for 20 minutes to prepare a shaping liquid having a mass concentration of 37 g/L.
Preparation example 15
The preparation of the pretreatment liquid comprises the following steps: adding sodium hydroxide refining agent into water, stirring at 200rpm for 20min to obtain pretreatment liquid with mass concentration of sodium hydroxide of 0.01g/L; the mass concentration of the refining agent in the precursor solution is 1.0g/L.
PREPARATION EXAMPLE 16
The preparation of the pretreatment liquid comprises the following steps: adding 40g of sodium hydroxide and 40g of refining agent into water, stirring at 200rpm for 20min to obtain pretreatment liquid, wherein the mass concentration of sodium hydroxide in the precursor liquid is 0.005g/L; the mass concentration of the refining agent in the precursor solution is 1.0g/L.
Preparation example 17
The preparation of the pretreatment liquid comprises the following steps: adding a refining agent into water, stirring at 200rpm for 20min to obtain a pretreatment liquid, wherein sodium hydroxide is not present in the precursor liquid; and the mass concentration of the refining agent in the precursor liquid is 1.0g/L.
PREPARATION EXAMPLE 18
The preparation of the pretreatment liquid comprises the following steps: adding sodium hydroxide and a refining agent into water, stirring at 200rpm for 20min to obtain a pretreatment liquid, wherein the mass concentration of sodium hydroxide in the precursor liquid is 0.01g/L; the mass concentration of the refining agent in the precursor solution is 0.5g/L.
Preparation example 19
The preparation of the pretreatment liquid comprises the following steps: adding sodium hydroxide and a refining agent into water, stirring at 200rpm for 20min to obtain a pretreatment liquid, wherein the mass concentration of sodium hydroxide in the precursor liquid is 0.01g/L; the mass concentration of the refining agent in the precursor solution is 1.5g/L.
Preparation example 20
The preparation of the pretreatment liquid comprises the following steps: adding sodium hydroxide into water, stirring at 200rpm for 20min, and preparing to obtain pretreatment liquid, wherein no refining agent exists in the precursor liquid; and the mass concentration of sodium hydroxide in the precursor liquid is 0.01g/L.
Preparation example 21
The present preparation example differs from preparation example 1 in that: the preparation replaces the 1:2 metal complex dye with the 1:1 metal complex dye with equal mass in the preparation process of the dye liquor.
PREPARATION EXAMPLE 22
The present preparation example differs from preparation example 1 in that: the preparation replaces the 1:1 metal complex dye with the 1:2 metal complex dye with equal mass in the preparation process of the dye liquor.
Examples
Example 1
A nylon four-side elastane dyeing process comprises the following steps:
s1, preprocessing gray fabric, specifically comprising the following steps:
s11, rolling the embryo cloth in a tension-free rolling machine (a constant tension rolling inspection machine with the model of XD850 manufactured by new generation mechanical and electrical equipment Co., ltd.);
s12, pre-shrinking: under the conditions of T=100 ℃ and water bath ratio of 1:35, carrying out heat preservation treatment on the greige cloth subjected to tension-free rolling in pretreatment liquid prepared in preparation example 15 for 70min at a vehicle speed of 45 m/min;
s13, multistage water washing, which specifically comprises the following steps:
s131: carrying out primary cleaning on the pre-shrunk grey cloth in the step S12 by clear water at the temperature of T=90 ℃;
s132: carrying out secondary cleaning on the grey cloth subjected to primary cleaning in the step S131 by clear water at the temperature of T=80 ℃;
s133: carrying out third-stage cleaning on the gray fabric subjected to the second-stage cleaning in the S132 by clean water at the temperature of T=60 ℃;
s2, presetting: heat setting the pretreated grey cloth in a 10-level oven for 40s at the speed of 30m/min at the temperature of 200 ℃;
s3, dyeing, specifically comprising the following steps:
s31, entering dyeing: transferring the embryo cloth to an overflow dyeing machine (selected from a high-temperature high-pressure overflow jet dyeing machine SVA produced by the mechanical manufacturing company of tin-free city star ) at 37 ℃ under the conditions of pH=5.5 and water bath ratio of 1:10, and dyeing in the dye liquor prepared in preparation example 1;
s32, heating, specifically comprising the following steps:
s321, heating in the first step: heating to 58 ℃ at a speed of 1.3 ℃/min, and preserving heat for 12min;
s322, heating in the second step: heating to 80 ℃ at the speed of 0.9 ℃/min, and preserving heat for 20min;
s323, heating in a third step: heating to 100deg.C at a speed of 0.5 deg.C/min, adjusting pH to 4.5 with acetic acid, and maintaining for 55min; s33, color fixation: cooling to 70deg.C at a speed of 1.2 deg.C/min, adjusting pH to 4.2 with acetic acid, adding 1.8% (omf) anionic color fixing agent, and maintaining for 17min; continuously adding 1.2% (omf) of anionic color fixing agent, and preserving heat for 25min;
s4, soaping: cooling to 48 ℃ at a speed of 1.5 ℃/min, soaking the dyed grey cloth in the soap lotion prepared in preparation example 13 for 25min under the condition of a water bath ratio of 1:28, and then soaking the dyed grey cloth in the setting liquid prepared in preparation example 14 for 12min.
S5, dewatering and scutching, wherein dewatering and scutching treatment is carried out by a scutcher (a untwisting scutcher with the model of ASMA281B of printing and dyeing machinery Co., ltd., yangzhou Cheng, rui );
s6, shaping a finished product: setting the grey cloth dehydrated and opened in the step S5 for 103 seconds at a speed of 40m/min under the conditions of pH=4.5 and a temperature of 155 ℃;
s7, winding the finished product.
Example 2
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 2.
Example 3
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 3.
Example 4
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 4.
Example 5
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 5.
Example 6
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 6.
Example 7
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 7.
Example 8
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 8.
Example 9
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 9.
Example 10
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 10.
Example 11
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation 11.
Example 12
This example differs from example 1 in that the embryonic cloth in step S31 of this example is dyed in the dye liquor prepared in preparation example 12.
Example 13
The difference between this embodiment and embodiment 1 is that in this embodiment, step S31: the embryonic cloth was transferred to an overflow dyeing machine at 35 c, ph=5.5 and water bath ratio of 1:10 into the dye liquor prepared in preparation example 1.
Example 14
The difference between this embodiment and embodiment 1 is that in this embodiment, step S31: the embryonic cloth was transferred to an overflow dyeing machine at 40 ℃ at ph=5.5 and water bath ratio of 1:10 into the dye liquor prepared in preparation example 1.
Example 15
The difference between this embodiment and embodiment 1 is that in this embodiment, step S31: the embryonic cloth was transferred to an overflow dyeing machine at 37 ℃ at ph=3 and a water bath ratio of 1:10 into the dye liquor prepared in preparation example 1.
Example 16
The difference between this embodiment and embodiment 1 is that in this embodiment, step S31: the embryonic cloth was transferred to an overflow dyeing machine at 37 ℃ at ph=6 and a water bath ratio of 1:10 into the dye liquor prepared in preparation example 1.
Example 17
The difference between this embodiment and embodiment 1 is that in this embodiment, step S31: the embryonic cloth was transferred to an overflow dyeing machine at 37 ℃ at ph=4.5 and water bath ratio of 1:10 into the dye liquor prepared in preparation example 1.
Example 18
This example differs from example 1 in that the temperature of the pre-shrinkage of this example S12 is 95 ℃.
Example 19
This example differs from example 1 in that the temperature of the pre-shrinkage of this example S12 is 105 ℃.
Example 20
This example differs from example 1 in that the pre-shrinkage of this example S12 was performed for 60 minutes in the pretreatment liquid.
Example 21
This example differs from example 1 in that the pre-shrinkage of this example S12 was performed for 80 minutes in the pretreatment liquid.
Example 22
This example differs from example 1 in that the pre-shrunk water bath ratio of this example S12 is 1:30.
Example 23
This example differs from example 1 in that the pre-shrunk water bath ratio of this example S12 is 1:40.
Example 24
The difference between this example and example 1 is that this example heat-preserved the blank after tension-free rolling in the pretreatment liquid prepared in preparation example 16 for 70min during the pre-shrinking in S12.
Example 25
The difference between this example and example 1 is that this example heat-preserved the blank after tension-free rolling in the pretreatment liquid prepared in preparation example 17 for 70min during the pre-shrinking in S12.
Example 26
The difference between this example and example 1 is that this example heat-preserved the blank after tension-free rolling in the pretreatment liquid prepared in preparation example 18 for 70min during the pre-shrinking in S12.
Example 27
The difference between this example and example 1 is that this example heat-preserved the blank after tension-free rolling in the pretreatment liquid prepared in preparation example 19 for 70min during the pre-shrinking in S12.
Example 28
The difference between this example and example 1 is that this example heat-preserved the blank after tension-free rolling in the pretreatment liquid prepared in preparation example 20 for 70min during the pre-shrinking in S12.
Example 29
The difference between this embodiment and embodiment 1 is that the third step of temperature increase in this embodiment S323 is specifically: heating to 100deg.C at a speed of 0.5 deg.C/min, and maintaining the temperature for 55min; preserving heat for 55min.
Example 30
The difference between this embodiment and embodiment 1 is that the temperature of S32 in this embodiment is raised, specifically including the following steps:
s321, heating in the first step: heating to 58 ℃ at a speed of 1.3 ℃/min, and preserving heat for 12min;
s322, heating in the second step: heating to 80 ℃ at a speed of 1.3 ℃/min, and preserving heat for 20min;
s323, heating in a third step: the temperature was raised to 100℃at a rate of 0.5℃per minute, and after adjusting pH=4.5 with acetic acid, the temperature was kept for 55 minutes.
Example 31
The difference between this embodiment and embodiment 29 is that the temperature of S32 in this embodiment is raised, specifically including the following steps:
s321, heating in the first step: heating to 58 ℃ at a speed of 1.3 ℃/min, and preserving heat for 12min;
s322, heating in the second step: heating to 80 ℃ at a speed of 1.3 ℃/min, and preserving heat for 20min;
s323, heating in a third step: the temperature was raised to 100℃at a rate of 1.3℃per minute, and after adjusting pH=4.5 with acetic acid, the temperature was kept for 55 minutes.
Example 32
The difference between this embodiment and embodiment 31 is that the temperature is increased in S32 of this embodiment, specifically: heating to 58 ℃ at a speed of 1.3 ℃/min, and preserving heat for 12min; then heating to 100 ℃ at the speed of 1.3 ℃/min, and preserving heat for 20min; then, after ph=4.5 was adjusted by acetic acid, the temperature was kept for 55min.
Example 33
The difference between this embodiment and embodiment 32 is that the temperature of S32 in this embodiment is raised, specifically: heating to 100 ℃ at a speed of 1.3 ℃/min, and preserving heat for 32min; then, after ph=4.5 was adjusted by acetic acid, the temperature was kept for 55min.
Example 34
The difference between this embodiment and embodiment 32 is that the temperature of S32 in this embodiment is raised, specifically: heating to 58 ℃ at a speed of 1.3 ℃/min, and preserving heat for 12min; then heating to 100 ℃ at the speed of 1.3 ℃/min, and preserving heat for 20min; then, after ph=4.5 was adjusted by acetic acid, the temperature was kept for 12min.
Example 35
The present embodiment is different from embodiment 1 in that S132 of the present embodiment specifically is: and (3) carrying out secondary cleaning on the grey cloth subjected to primary cleaning in the step (S131) by clear water at the temperature of T=90 ℃.
Example 36
The present embodiment is different from embodiment 35 in that S133 of the present embodiment is specifically: the second-stage cleaning grey cloth in S132 is subjected to third-stage cleaning by clean water at a temperature of t=90℃.
Example 37
The present embodiment is different from embodiment 1 in that the S2 pre-shape of the present embodiment is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 40s at a temperature of 195 ℃.
Example 38
The present embodiment is different from embodiment 1 in that the S2 pre-shape of the present embodiment is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 40s at a temperature of 205 ℃.
Example 39
The present embodiment is different from embodiment 1 in that the S2 pre-shape of the present embodiment is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 40s at a temperature of 210 ℃.
Example 40
The present embodiment is different from embodiment 40 in that the S2 pre-shape of the present embodiment is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 35s at a temperature of 200 ℃.
Example 41
The present embodiment is different from embodiment 1 in that the S2 pre-shape of the present embodiment is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 45s at a temperature of 200 ℃.
Example 42
The difference between this embodiment and embodiment 1 is that the S33 fixation of this embodiment is specifically: after cooling to 70 ℃ at a speed of 1.2 ℃/min, adjusting the pH to be 4.2 by acetic acid, adding 1.8% (omf) of anionic color fixing agent, and preserving the heat for 42min.
Example 43
The difference between this embodiment and embodiment 1 is that in S6 of this embodiment, the shaping of the finished product is specifically: setting the grey cloth dehydrated and opened in the step S5 for 103 seconds at a speed of 40m/min under the conditions of pH=4 and a temperature of 155 ℃.
Example 44
The difference between this embodiment and embodiment 1 is that in S6 of this embodiment, the shaping of the finished product is specifically: setting the grey cloth dehydrated and opened in the step S5 for 103 seconds at a speed of 40m/min under the conditions that the pH=5 and the temperature are 155 ℃.
Example 45
This example differs from example 1 in that the setting liquid prepared in preparation example 14 was replaced with equal mass of water in the S4 soaping of this example.
Comparative example
Comparative example 1
The present comparative example is different from example 1 in that the S2 pre-form of the present comparative example is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 45s at 190 ℃.
Comparative example 2
The present comparative example is different from example 1 in that the S2 pre-form of the present comparative example is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 45s at 190 ℃.
Comparative example 2
The present comparative example is different from example 1 in that the S2 pre-form of the present comparative example is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 45s at a temperature of 215 ℃.
Comparative example 3
The present comparative example is different from example 1 in that the S2 pre-form of the present comparative example is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 25s at a temperature of 200 ℃.
Comparative example 4
The present comparative example is different from example 1 in that the S2 pre-form of the present comparative example is specifically: the pretreated grey cloth was heat set in a 10-stage oven at a speed of 30m/min for 55s at a temperature of 200 ℃.
Comparative example 5
This comparative example differs from example 1 in that the embryonic cloth in step S31 of this example was dyed in the dye liquor prepared in preparation example 21.
Comparative example 6
This comparative example differs from example 1 in that the embryonic cloth in step S31 of this example was dyed in the dye liquor prepared in preparation example 22.
Detection method/test method
1. Fastness to rubbing: the fabrics after printing and dyeing of examples 1-45 and comparative examples 1-6 were measured according to GB/T3920-2008 "rubbing fastness to textile color fastness test", two groups of fabrics after printing and dyeing of examples 1-45 and comparative examples 1-6, which were not less than 50mm by 140mm in size, were used for dry rubbing test and wet rubbing test, and the number of staining grades of the fabrics was evaluated by evaluating a grey card for staining;
2. fastness to washing: fabrics after printing and dyeing of examples 1-45 and comparative examples 1-6 were measured according to GB/T5713-2013 "textile color fastness to Water fastness test", and rated with a gray card for rating staining and a gray sample card for rating discoloration;
3. and (3) defect detection: the surface of the fabric processed in the examples 1-45 and the comparative examples 1-6 is detected by a detection personnel through an FS220 photoelectric automatic cloth inspecting machine, the detected fabric defects can be marked by a marking system of the cloth inspecting machine, and the surface defects of the fabric are evaluated according to 1-4 points, and the surface defects of the fabric are more as the point is larger.
TABLE 3 color fastness and defect detection results for examples 1-45 and comparative examples 1-6
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It can be seen from the combination of examples 1-5 and comparative examples 5-6 and Table 3 that after the 1:1 metal complex dye and the 1:2 metal complex dye are compounded, the color fastness and the dyeing uniformity of the nylon four-sided bullet can be synergistically improved; and the different proportions of the 1:1 metal complex dye and the 1:2 metal complex dye also influence the uniformity and color fastness of dyeing on the dye liquor, when the dosage of the 1:2 metal complex dye is 2.3% (omf) and the dosage of the 1:1 metal complex dye is 0.8% (omf), the defects are detected as 1 part, and the detection results of the friction color fastness and the water fastness are all 4-5.
It can be seen by combining example 1, examples 6-12 and table 3 that different amounts of spandex colorant, chelating dispersant and anion leveling agent affect the dyeing uniformity of the cloth, and different amounts of chelating dispersant and anion leveling agent affect the dyeing color fastness; whether the dye is subjected to ultrasonic dispersion or not can influence the uniformity of dye dispersion, and further influence the dyeing uniformity of dye liquor.
It can be seen in combination with example 1, examples 13-17 and with Table 3 that both the temperature and the pH at the time of the in-dyeing of the fabric affect the fastness and uniformity of the dye uptake.
It can be seen in combination with example 1, examples 18-23 and with table 3 that both the temperature of the pre-shrink and the water bath ratio as well as the hold time affect the uniformity and color fastness of the subsequent fabric dye-works.
It can be seen from the combination of examples 1 and 24-28 and the combination of table 3 that the pre-shrinking pretreatment liquid component affects the pre-shrinking effect of the fabric, oily substances on the surface of the fabric cannot be removed, and the refining agent and sodium hydroxide are compounded to synergistically improve the surface of the fabric, so that the uniformity of subsequent dyeing of the fabric and the color fastness of the dyed fabric are improved.
It can be seen from the combination of examples 1 and 29-34 and the table 3 that the temperature rising speed, the temperature keeping time, the pH value and the different temperatures are adjusted, so that the amount and the speed of the dye entering the fiber and the transfer dyeing speed of the dye molecules on the fiber are adjusted, and the color fastness and the dyeing uniformity of the fabric after dyeing and finishing are affected.
It can be seen from the combination of examples 1 and 35-36 and the combination of table 3 that different oily substances are adhered to the surfaces of the four-sided woven nylon, and the dissolution temperatures of the different oily substances are different, so that the oily substances adhered to the surfaces of the four-sided woven nylon can be better removed at different washing temperatures, thereby improving the dyeing uniformity and the color fastness of the application.
It can be seen from the combination of examples 1, 37-41 and comparative examples 1-4 and Table 3 that the number of amino groups in nylon can be reduced by the pre-setting at 195-210 ℃, so that the co-dyeing property and the color fastness of the nylon and spandex by the dye can be improved, the dyeing uniformity of the fabric can be influenced when the temperature is too high or too low, and the dyeing uniformity and the color fastness of the fabric can be influenced when the heat setting time is too long or too low.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (1)
1. The four-side elastane dyeing process for nylon is characterized by comprising the following steps of:
s1, preprocessing grey cloth;
the pretreatment of the grey cloth in S1 specifically comprises the following steps:
s11, rolling the blank cloth in a tension-free manner;
s12, pre-shrinking: under the conditions of T=95-105 ℃ and water bath ratio of 1 (30-40), carrying out heat preservation treatment on the blank cloth which is coiled in a tension-free way in pretreatment liquid for 60-80min at the speed of 40-50 m/min; wherein the pretreatment liquid contains sodium hydroxide and a refining agent;
s13, multi-stage water washing; the step of multistage cleaning in S13 specifically includes the following steps:
s131: carrying out primary cleaning on the pre-shrunk grey cloth in the step S12 by clear water at the temperature of T=88-95 ℃;
s132: carrying out secondary cleaning on the grey cloth subjected to primary cleaning in the step S131 by clear water at the temperature of T=75-85 ℃;
s133: carrying out third-stage cleaning on the gray fabric subjected to the second-stage cleaning in the S132 by clean water at the temperature of T=55-65 ℃;
s2, presetting: heat setting the pretreated grey cloth at a speed of 25-35m/min for 35-45s at a temperature of 195-210 ℃;
s3, dyeing: performing overflow dyeing on the pre-shaped grey cloth in a dye liquor through a one-bath one-step method under the condition of pH=3-6, wherein the dye liquor comprises 2-2.5% omf of 1:2 metal complex dye, 0.5-1.0% omf of 1:1 metal complex dye and 0.6-0.8% omf of spandex coloring agent;
the preparation of the dye liquor in S3 specifically comprises the following steps: adding a chelating dispersant into water, mixing and stirring uniformly to obtain a mixed solution, wherein the mass concentration of the chelating dispersant in the mixed solution is 1.0-1.5g/L, adding 2-2.5% omf of 1:2 metal complex dye, 0.5-1.0% omf of 1:1 metal complex dye, 0.6-0.8% omf spandex coloring agent and 1.0-2.0% omf anion leveling agent into the mixed solution, and then performing ultrasonic dispersion uniformly to obtain a dye solution;
the dyeing of S3 specifically comprises the following steps:
s31, entering dyeing: at 35-40 ℃, at ph=3-6 conditions and water bath ratio of 1: (8-12) conveying the embryo cloth into the dye liquor under the condition;
s32, heating: heating to 55-60deg.C at a speed of 0.3-1.5 deg.C/min, maintaining for 10-15min, heating to 105-110deg.C at a speed of 0.3-1.5 deg.C/min, and maintaining for 65-80min; the heating in S32 specifically includes the following steps:
s321, heating in the first step: heating to 55-60deg.C at a speed of 1.2-1.5 deg.C/min, and maintaining for 10-15min;
s322, heating in the second step: heating to 75-85deg.C at a speed of 0.8-1.0deg.C/min, and maintaining for 15-25min;
s323, heating in a third step: then heating to 95-105 ℃ at the speed of 0.3-0.7 ℃/min, adjusting to pH=4-5, and preserving heat for 50-60min;
s33, color fixation: adding a color fixing agent to perform color fixing treatment; the color fixing step in the S33 specifically comprises the following steps: cooling to 65-75deg.C at a speed of 1.0-1.5 deg.C/min, adjusting pH=4.0-4.5, adding 1.5-2% omf anionic color fixing agent, and maintaining for 15-20min; continuously adding 1-1.5% omf anionic color fixing agent, and preserving heat for 20-30min;
s4, soaping; the step of soaping in the step S4 specifically comprises the following steps: cooling to 45-50 ℃ at a speed of 1.2-1.8 ℃/min, soaking the dyed grey cloth in a soap washing liquid for 20-30min under the condition of a water bath ratio of 1 (25-30), and then soaking in a shaping liquid for 10-15min, wherein the shaping liquid is an anti-phenolic yellowing agent mixed liquid with a mass concentration of 35-40 g/L;
s5, dewatering and opening;
s6, shaping a finished product; the step of shaping the finished product in the step S6 is specifically as follows: setting the grey cloth dehydrated and opened in the step S5 for 100-110 seconds at a speed of 35-45m/min under the conditions that the pH=4-5 and the temperature is 150-160 ℃;
s7, winding the finished product.
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