CN111235924B - Preparation method of polyester fabric disperse dye less-water dyeing color paste and dyeing method thereof - Google Patents
Preparation method of polyester fabric disperse dye less-water dyeing color paste and dyeing method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed dyestuffs
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/16—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 dispersed, e.g. acetate, dyestuffs
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/90—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 dyes dissolved in organic solvents or aqueous emulsions thereof
- D06P1/92—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 dyes dissolved in organic solvents or aqueous emulsions thereof in organic solvents
- D06P1/928—Solvents other than hydrocarbons
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Abstract
The invention discloses a preparation method of disperse dye low-water dyeing paste and a dyeing method thereof. The ultrasonic and stirring process enables the disperse dye dissolved in the organic solvent to be uniformly dispersed in the water solution in the form of micro-particles to form stable dispersion liquid, and simultaneously, the process of long-time grinding in the traditional color paste preparation process is omitted. The method of the invention realizes the little water dyeing of the polyester fabric by the disperse dye, reduces the cost of dyeing water, and ensures that all the fastness of the dyed fabric is consistent with that of the conventional disperse dye by hot-melt dyeing.
Description
Technical Field
The invention belongs to the technical field of dyeing and finishing, and particularly relates to a preparation method and a dyeing method of polyester fabric disperse dye little-water dyeing color paste.
Background
Disperse dyes are a class of dyes that have relatively small molecules and no water-soluble groups in the structure. When dyeing, the dye must be uniformly dispersed in the dye liquor by means of a dispersant, so that the fiber such as polyester can be dyed. The chemical fiber textile product printed and dyed by the disperse dye has bright color, excellent washing fastness and wide application. At present, most of polyester woven fabrics are dyed by disperse dyes in a hot melting mode, the production efficiency of hot melting dyeing is high, the dyeing fastness is excellent, however, dyed polyester fabrics are usually washed and reduced and cleaned, and the dyeing water and the dyeing wastewater are increased. Therefore, the pursuit of a disperse dye water-less dyeing paste and a using method thereof are pursuit targets of dyeing and finishing science and technology workers.
The invention patent CN 201611039623 relates to a supercritical fluid dyeing and finishing system and a method thereof, wherein the system comprises a fabric warp beam dyeing kettle; a fabric warp beam dyeing and finishing unit is arranged in the fabric warp beam dyeing kettle, and an external magnetic transmission device II is arranged outside the fabric warp beam dyeing kettle; fabric warp beam dyeing and finishing unit includes porous pipe I, porous pipe II, porous pipe I, porous pipe II respectively through the entry linkage of bearing I, bearing II and fabric warp beam dyeing and finishing unit and distribute in fabric warp beam dyeing and finishing unit, be equipped with inside magnetic transmission II, inside magnetic transmission III on porous pipe I, the porous pipe II respectively, the fluid jet ware just distributes around porous pipe I and porous pipe II with the entry linkage of fabric warp beam dyeing and finishing unit. The invention patent CN 201610031977 relates to a supercritical fluid jig dyeing process. The system is implemented by a supercritical fluid medium liquefaction storage subsystem, a supercritical fluid dyeing subsystem intermediate heat storage subsystem, a filling control subsystem and a pipeline. The process comprises the following steps: 1. initializing a supercritical fluid dyeing subsystem; 2. filling and supercritical fluid medium; 3. dyeing with supercritical fluid; 4. returning the supercritical fluid medium and separating from the residual dye; 5. exhausting residual supercritical fluid medium; 6. and discharging the dyed object. The invention patent CN201611204393 relates to a supercritical fluid continuous jig dyeing device and a dyeing process. The supercritical fluid continuous jig dyeing device of the double-integrated jig dyeing device or the triple-integrated jig dyeing device is composed of two or three integrated jig dyeing devices, a filter, a supercharger, a supply tank, a cache tank, a switching valve, a supply valve, an exhaust valve, a safety valve, a pressure display instrument, a pressure control instrument, a temperature control instrument, a pipe and a pipe fitting. The process comprises the following steps: 1. initializing a system; 2. initializing an integrated jig dyeing machine; 3. the integrated jig dyeing machine is filled with a supercritical fluid medium, and is subjected to supercritical treatment and jig dyeing; 4. the integrated jig dyeing machine is filled with supercritical fluid medium again, and is subjected to supercritical treatment and rinsing; 5. and discharging the dyed objects by the integrated jig dyeing device. The invention patent CN 109135334A discloses a little-water dyeing dispersed liquid dye and a preparation method and application thereof, wherein the little-water dyeing dispersed liquid dye comprises 1-60% of dispersed dye, 0.05-60% of polymer dispersant and water by mass percent, raw materials are weighed, quickly pulped and dispersed, enter a sand mill for sanding and filtration to obtain liquid dispersed dye, a mixture of preservative, defoamer and water is added, the liquid dispersed dye is standardized, filtered again and packaged. The liquid dye is applied to fabric dyeing, and particularly when the liquid dye is applied to a hot-melt dyeing or low-water dyeing process of a setting machine, the dyeing effect is good, water washing is not needed, an auxiliary agent with a color strengthening effect is not needed, and waste water is not generated. The patent reports disperse dye supercritical carbon dioxide less-water dyeing equipment and a dyeing method, and a disperse dye less-water dyeing liquid dye prepared by a grinding method and a dyeing method, and does not relate to reports of obtaining disperse dye less-water dyeing color paste by a non-grinding method and without a color-reinforcing auxiliary agent.
Disclosure of Invention
The invention aims to solve the technical problems that a large amount of water is needed for washing and reduction cleaning after conventional hot-melting dyeing of the conventional disperse dye, so that the dyeing cost is increased, the dyeing wastewater is increased, and the practical difficulty is brought to printing and dyeing enterprises, so that the preparation method and the dyeing method of the polyester fabric disperse dye low-water dyeing color paste are provided, the dyeing and finishing processing of disperse dye low-water dyeing is realized, the water load of printing and dyeing is reduced, and particularly the excellent dyeing fastness and hand feeling of polyester fabrics can be realized.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 2-80% of disperse dye with an organic solvent to obtain a solution A, and dissolving 0.2-2% of dispersant and 0.2-2% of emulsifier with water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the ultrasonic high-speed stirring condition, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 0.5-2 h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in a particulate form, thereby obtaining the disperse dye water-less dyeing paste.
Further, the disperse dye is a medium-temperature type disperse dye and a high-temperature type disperse dye used for conventional polyester fabric hot-melt dyeing, but additives and impurities are sufficiently removed before use.
Further, the organic solvent is a solvent capable of sufficiently dissolving the disperse dye, such as N, N-dimethylformamide, acetone, or γ -butyrolactone.
Further, the dispersant is one of a common dispersant NNO for disperse dyes, a dispersant MF, a dispersant DN and the like.
Further, the emulsifier is one of emulsifier TX-10, emulsifier TX-21, emulsifier TX-4, emulsifier SG-6, emulsifier S-60, emulsifier PEG-600 and the like.
Furthermore, ultrasonic treatment is needed to be added in the preparation process of the less-water dyeing color paste, and the ultrasonic treatment and the stirring are carried out simultaneously.
Further, the stirring speed in the preparation process of the less-water dyeing paste is 8000-20000 r/min.
The ultrasonic and stirring process enables the disperse dye dissolved in the organic solvent to be uniformly dispersed in the water solution in the form of micro-particles to form stable dispersion liquid, and simultaneously, the process of long-time grinding in the traditional color paste preparation process is omitted. The disperse dye less-water dyeing system is not added with other additives except the less-water dyeing color paste and water, and does not need an auxiliary agent adhesive which plays a role in color fixation compared with the traditional less-water dyeing system.
The dyeing method of the less-water dyeing color paste prepared by the preparation method comprises the following steps: diluting a certain amount of disperse dye water-less dyeing paste with water to obtain a dye solution with the mass fraction of 0.3-5%, padding the polyester fabric into the dye solution, pre-drying by infrared rays, drying at 60-100 ℃ for 3-10 min, steaming at 100-130 ℃ for 10-30 min, and finally, carrying out hot melting at 170-220 ℃ for 1-2 min, and cooling the dyed fabric to obtain the dyed fabric.
The polyester fabric is dyed by the dyeing paste with less water, and does not need to be washed and reduced and cleaned.
The invention has the beneficial effects that: the disperse dye is dissolved by an organic solvent, and then the stable disperse dye low-water dyeing color paste is obtained by ultrasonic and high-speed stirring under the action of the dispersing agent and the emulsifying agent, so that the low-water dyeing of the disperse dye on the polyester fabric can be realized. Solves the problems of more water consumption and higher treatment difficulty of printing and dyeing wastewater in the conventional disperse dye hot-melt dyeing.
The method of the invention realizes the little water dyeing of the polyester fabric by the disperse dye, reduces the dyeing water, the treatment burden of the printing and dyeing wastewater and the production cost, and all the fastnesses of the dyed polyester fabric are consistent with those of the conventional hot-melt dyeing. The technical scheme of the invention has simple and feasible process, has no special requirements on raw materials and dyeing equipment, can realize large-scale production by using the disperse dye and the hot-melt dyeing equipment of the conventional printing and dyeing mill, and has wide application prospect.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the following examples are illustrative only and are not intended to limit the scope of the invention, which is to be given numerous insubstantial modifications and adaptations by those skilled in the art based on the teachings set forth above.
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 2-80% of disperse dye with organic solvent to obtain solution A, and dissolving 0.2-2% of dispersant and 0.2-2% of emulsifier with water to obtain solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the ultrasonic high-speed stirring condition, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuously carrying out ultrasonic stirring for 0.5-2 h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in a micro-particle form, thereby obtaining the disperse dye low-water dyeing paste.
A dyeing method of polyester fabric disperse dye little water dyeing color paste comprises the following steps:
the dyeing method of the disperse dye little-water dyeing color paste comprises the following steps: diluting a certain amount of disperse dye water-less dyeing paste into 0.3-5% disperse dye concentration by water, adding the disperse dye concentration into a dyeing tank, padding polyester fabric into a dyeing solution, pre-drying by infrared rays, drying at 60-100 ℃ for 3-10 min, steaming by steam at 100-130 ℃ for 10-30 min, finally carrying out hot melting at 170-220 ℃ for 1-2 min, and cooling the dyed fabric to obtain the dyed fabric.
Example 1
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 2% of disperse blue S-BGL in an organic solvent acetone to obtain a solution A, and dissolving 0.2% of dispersant NNO and 0.2% of emulsifier TX-10 in water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring at 8000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and continuing ultrasonic stirring for 0.5h to uniformly mix the disperse dye dissolved in the organic solvent with water and then uniformly disperse the mixture in the form of micro-particles to obtain the disperse blue S-BGL water-less dyeing color paste.
The method for dyeing by using the disperse blue S-BGL less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse blue S-BGL low-water dyeing color paste with water to a concentration of 0.3%, adding the diluted disperse blue S-BGL low-water dyeing color paste into a dyeing tank, padding polyester fabric into a dyeing solution, pre-drying with infrared rays, drying at 100 ℃ for 3min, steaming with steam at 100 ℃ for 30min, finally hot melting at 170 ℃ for 2min, and cooling the dyed fabric to obtain the dyed fabric.
Example 2
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 40% of dispersed orange S-4RL by using an organic solvent N, N-dimethylformamide to obtain a solution A, and dissolving 0.5% of dispersing agent MF and 1.5% of emulsifier TX-21 by using water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring at 20000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 2 hours to uniformly mix the disperse dye dissolved in the organic solvent with water and then uniformly disperse the mixture in the form of fine particles to obtain the disperse orange S-4RL water-less dyeing paste.
The method for dyeing by using the disperse orange S-4RL less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse orange S-4RL low-water dyeing paste with water to 8% concentration, adding the diluted disperse orange S-4RL low-water dyeing paste into a dye vat, padding polyester fabric into a dyeing solution, pre-drying with infrared rays, drying at 60 ℃ for 10min, steaming with steam at 120 ℃ for 20min, finally hot melting at 220 ℃ for 1min, and cooling the dyed fabric to obtain the dyed fabric.
Example 3
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 10% of disperse red S-5BL with an organic solvent gamma-butyrolactone to obtain a solution A, and dissolving 1% of a dispersant DN and 2% of an emulsifier TX-4 with water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring at 12000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 1h to uniformly mix the disperse dye dissolved in the organic solvent with water and then uniformly disperse the mixture in a particulate form to obtain the disperse red S-5BL low-water dyeing paste.
The method for dyeing by using the disperse red S-5BL less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse red S-5BL low-water dyeing paste with water to a concentration of 2%, adding the diluted disperse red S-5BL low-water dyeing paste into a dyeing tank, padding a polyester fabric into a dyeing solution, pre-drying with infrared rays, drying at 90 ℃ for 4min, steaming with steam at 125 ℃ for 25min, finally hot melting at 200 ℃ for 1.5min, and cooling the dyed fabric to obtain the dyed fabric.
Example 4
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 20% disperse blue S-3BG in an organic solvent acetone to obtain a solution A, and dissolving 0.5% dispersant NNO and 1.3% emulsifier SG-6 in a small amount of water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring at 15000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing to ultrasonically stir for 1.5h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in a particulate form, and the disperse blue S-3BG low-water dyeing paste is obtained.
The method for dyeing by using the disperse blue S-3BG less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse blue S-3BG low-water dyeing paste with water to a concentration of 6% and adding the diluted paste into a dye vat, padding a polyester fabric into a dye solution, pre-drying the polyester fabric with infrared rays, drying the polyester fabric at 80 ℃ for 7min, steaming the polyester fabric with steam at 115 ℃ for 18min, finally carrying out hot melting at 210 ℃ for 1min, and cooling the dyed fabric to obtain the dyed fabric.
Example 5
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 30% disperse blue S-BBL with organic solvent acetone to obtain solution A, and dissolving 1.6% dispersant MF and 1.2% emulsifier S-60 with small amount of water to obtain solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic treatment and high-speed stirring at 18000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 1h to uniformly mix the disperse dye dissolved in the organic solvent with water and then uniformly disperse the mixture in a micro-particle form to obtain the disperse blue S-BBL dye-less color paste.
The method for dyeing by using the disperse blue S-BBL less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse blue S-BBL low-water dyeing paste with water to a concentration of 20% and adding the diluted disperse blue S-BBL low-water dyeing paste into a dyeing tank, padding polyester fabric into a dyeing solution, pre-drying with infrared rays, drying at 70 ℃ for 7min, steaming with steam at 120 ℃ for 20min, finally hot melting at 200 ℃ for 1.5min, and cooling the dyed fabric to obtain the dyed fabric.
Example 6
A preparation method of polyester fabric disperse dye little water dyeing color paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 25% of disperse golden yellow SE-3R with an organic solvent N, N-dimethylformamide to obtain a solution A, and dissolving 1.4% of dispersing agent DN and 1.3% of emulsifier PEG-600 with a small amount of water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic treatment and high-speed stirring at 19000R/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing to perform ultrasonic stirring for 1.5h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in the form of micro-particles, thereby obtaining the disperse golden SE-3R less-water dyeing paste.
The method for dyeing by using the disperse yellow SE-3R less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse golden SE-3R low-water dyeing paste with water to a concentration of 15% and adding the diluted paste into a dye vat, padding polyester fabric into a dye solution, pre-drying with infrared rays, drying at 90 ℃ for 5min, steaming with steam at 130 ℃ for 10min, finally hot melting at 215 ℃ for 1min, and cooling the dyed fabric to obtain the dyed fabric.
Example 7
A preparation method of polyester fabric disperse dye little-water dyeing paste comprises the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 35% of disperse black SE-RN by using an organic solvent gamma-butyrolactone to obtain a solution A, and dissolving 1.7% of dispersant NNO and 2% of emulsifier TX-10 by using a small amount of water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring at 16000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 2 hours to uniformly mix the disperse dye dissolved in the organic solvent with water and then uniformly disperse the mixture in the form of fine particles to obtain the disperse black SE-RN water-deficient dyeing paste.
The dyeing method by using the disperse black SE-RN less-water dyeing color paste comprises the following steps:
taking a certain amount of disperse black SE-RN less-water dyeing paste, diluting the disperse black SE-RN less-water dyeing paste with water to a concentration of 5%, adding the dilute black SE-RN less-water dyeing paste into a dye vat, padding the polyester fabric into a dye solution, pre-drying the polyester fabric by using infrared rays, drying the polyester fabric at 85 ℃ for 5min, steaming the polyester fabric by using steam at 100 ℃ for 30min, finally carrying out hot melting at 200 ℃ for 2min, and cooling the dyed fabric to obtain the dyed fabric.
Example 8
A preparation method and a use method of polyester fabric disperse dye little-water dyeing color paste comprise the following steps:
(1) The disperse dye less-water dyeing color paste comprises the following components: dissolving 40% disperse red SE-GFL with an organic solvent gamma-butyrolactone to obtain a solution A, and dissolving 2% of a dispersant MF and 1.5% of an emulsifier TX-4 with a small amount of water to obtain a solution B;
(2) Preparing disperse dye little-water dyeing color paste: slowly adding the solution B into the solution A under the conditions of ultrasonic and high-speed stirring of 20000r/min, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing to perform ultrasonic stirring for 0.5h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in the form of micro-particles, thereby obtaining the disperse red SE-GFL less-water dyeing paste.
The dyeing method by using the disperse black SE-RN less-water dyeing color paste comprises the following steps:
diluting a certain amount of disperse red SE-GFL dye paste with less water to 8% concentration by water, adding the dye paste into a dye vat, padding the polyester fabric into a dye solution, pre-drying by infrared rays, drying at 100 ℃ for 5min, steaming at 110 ℃ for 15min, finally carrying out hot melting at 220 ℃ for 2min, and cooling the dyed fabric to obtain the dyed fabric.
Comparative sample 1
The disperse dye low-water dyeing paste in the examples 1 to 8 is changed into commercial disperse dye with the same name, the using amount of the disperse dye is consistent with that of the dye in the low-water dyeing paste, other preparation methods and dyeing methods are the same as the examples 1 to 8, and the procedures of water washing, reduction cleaning, water washing and the like are not carried out after dyeing.
Comparative sample 2
The disperse dye low-water dyeing paste in the embodiment 1-8 is changed into commercial disperse dye with the same name, the using amount of the disperse dye is consistent with that of the dye in the low-water dyeing paste, other preparation methods and dyeing methods are the same as the embodiment 1-8, and the procedures of water washing, reduction cleaning, water washing and the like are carried out after dyeing.
Comparative sample 3
The organic solvent in which the disperse dye was dissolved in examples 1 to 8 was changed to water, and the ultrasonic and stirring operations were changed to grinding for 24 hours, and other preparation methods and dyeing methods were the same as in examples 1 to 8 (water washing, reduction washing, water washing, etc. were not performed after dyeing).
The preparation method based on example 1 is as follows:
dispersing 2% of disperse blue S-BGL with water to obtain a solution A, and dissolving 0.2% of dispersant NNO and 0.2% of emulsifier TX-10 with water to obtain a solution B; slowly adding the solution B into the solution A, wherein the volume ratio of the solution A to the solution B is 1:3, and grinding for 24 hours to obtain the disperse blue S-BGL less-water dyeing color paste.
Comparative sample 4
The organic solvent dissolving the disperse dye in the examples 1 to 8 was changed to water, the ultrasonic and stirring operations were changed to grinding for 24 hours, and 3% binder was added to the dyeing solution, and the other preparation method and dyeing method were the same as in the examples 1 to 8, and after dyeing, the steps of water washing, reduction washing, water washing, and the like were performed.
Effects of the invention
After treatment in examples 1 to 8, the following tests were carried out on the fabrics, the results of which are shown in Table 1.
1) Determination of the light fastness of dyed fabrics
And testing the light fastness of the fabric according to the GB/T-8427-2008 textile light fastness test standard.
2) Measurement of washing fastness
The test is carried out according to GB/T3921-2008 'color fastness to soaping' of textiles.
3) Measurement of rubbing fastness
The test is carried out according to GB/T-2008 ' color fastness to rubbing ' of textile color fastness test '.
Table 1 test results of the fabrics performed
As can be seen from Table 1, the technical scheme provided by the invention can endow the polyester fabric with higher dyeing fastness, washing fastness and rubbing fastness above grade 4, and light fastness above grade 5, and the fastness performance is obviously higher than that of a comparison sample 1 (without reduction cleaning after common disperse dye hot-melt dyeing), and is close to that of a comparison sample 2 (reduction cleaning after common disperse dye hot-melt dyeing), and the hand feeling is excellent. Compared with the comparative sample 3, the fastness of the inventive example is obviously improved, and is basically consistent with that of the comparative sample 4, but the hand feeling of the inventive example is obviously better than that of the comparative sample 4.
Therefore, the color fastness and hand feeling of the liquid disperse dye used for the reduction-free cleaning dyeing of the polyester fabric are consistent with those of a comparison sample 2 (a traditional disperse dye hot-melt dyeing process), and are obviously superior to those of the comparison sample 1; compared with the liquid disperse dye color paste (comparison sample 3) prepared by the grinding method which is researched more at present, the liquid disperse dye color paste prepared by the invention has obviously improved fastness, compared with the liquid disperse dye color paste (comparison sample 4) prepared by the grinding method which is researched more at present, the liquid disperse dye color paste has obviously improved hand feeling, and no adhesive is needed; the liquid dispersion prepared by the invention can meet the requirements of the polyester fabric on color fastness and excellent hand feeling.
Claims (1)
1. A dyeing method of polyester fabric disperse dye little water dyeing color paste is characterized by comprising the following steps: diluting a certain amount of disperse dye water-less dyeing paste with water to obtain a dye liquor with the mass fraction of 0.3% -5%, padding a polyester fabric into the dye liquor, prebaking with infrared rays, then drying at 60-100 ℃ for 3-10min, then steaming with steam at 100-130 ℃ for 10-30min, finally hot melting at 170-220 ℃ for 1-2min, and cooling the dyed fabric to obtain the dyed fabric;
the disperse dye less-water dyeing system is not added with other additives except the less-water dyeing color paste and water, and does not need an auxiliary agent adhesive which plays a role in color fixation compared with the traditional less-water dyeing system;
the polyester fabric is dyed by the dyeing paste with less water, and does not need to be washed and reduced and cleaned;
the preparation method of the polyester fabric disperse dye water-less dyeing color paste comprises the following steps:
(1) Dissolving 2-80% of disperse dye by using an organic solvent to obtain a solution A, and dissolving 0.2-2% of dispersant and 0.2-2% of emulsifier by using water to obtain a solution B;
(2) Slowly adding the solution B into the solution A under the ultrasonic high-speed stirring condition, wherein the volume ratio of the solution A to the solution B is 1:3, and then continuing ultrasonic stirring for 0.5 to 2h, so that the disperse dye dissolved in the organic solvent is uniformly mixed with water and then uniformly dispersed in a micro-particle form, thereby obtaining the polyester fabric disperse dye water-deficient dyeing color paste;
the disperse dye is a medium-temperature disperse dye or a high-temperature disperse dye used for conventional polyester fabric hot-melt dyeing, and additives and impurities are fully removed before use;
the organic solvent comprises N, N-dimethylformamide, acetone or gamma-butyrolactone;
the dispersant comprises NNO, MF or DN;
the emulsifier comprises TX-10, TX-21, TX-4, SG-6, S-60 or PEG-600;
the stirring speed in the preparation process of the less-water dyeing paste is 8000-20000r/min.
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