CN114855470A - Gray dye for light-dyed polyester fabric and dyeing process thereof - Google Patents
Gray dye for light-dyed polyester fabric and dyeing process thereof Download PDFInfo
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- CN114855470A CN114855470A CN202210398585.1A CN202210398585A CN114855470A CN 114855470 A CN114855470 A CN 114855470A CN 202210398585 A CN202210398585 A CN 202210398585A CN 114855470 A CN114855470 A CN 114855470A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 148
- 239000004744 fabric Substances 0.000 title claims abstract description 81
- 229920000728 polyester Polymers 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 61
- 230000008569 process Effects 0.000 title claims abstract description 50
- 238000007596 consolidation process Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 239000012459 cleaning agent Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000004321 preservation Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 24
- 238000012545 processing Methods 0.000 abstract description 10
- 238000009776 industrial production Methods 0.000 abstract description 4
- 239000000975 dye Substances 0.000 description 99
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- 239000000835 fiber Substances 0.000 description 10
- 239000003086 colorant Substances 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000000986 disperse dye Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- ZLCUIOWQYBYEBG-UHFFFAOYSA-N 1-Amino-2-methylanthraquinone Chemical compound C1=CC=C2C(=O)C3=C(N)C(C)=CC=C3C(=O)C2=C1 ZLCUIOWQYBYEBG-UHFFFAOYSA-N 0.000 description 3
- 229920004934 Dacron® Polymers 0.000 description 3
- 229920004933 Terylene® Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004044 disperse dyeing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010979 ruby Substances 0.000 description 2
- 229910001750 ruby Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 150000003902 salicylic acid esters Chemical class 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
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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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
-
- 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)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention relates to the field of dyeing and finishing processing, and discloses a grey dye for lightly dyed polyester fabrics and a dyeing process thereof, wherein the grey dye comprises the following components in parts by weight: 0.1-1 parts of gray dye, 0.05-0.5 part of dispersing agent and 0.08-0.8 part of cleaning agent, wherein the gray dye is prepared by mixing the dispersed dye, and the dye concentration of the gray dye is 0.1-1%; the application provides a mixed dye product capable of carrying out light grey color dyeing on polyester fabrics, the product can be directly added into water to prepare dye solution, the processing procedures are reduced, and the industrial production is easy to realize; the application also provides a dyeing process of the light-dyed polyester fabric, the process performs light dyeing processing on the polyester fabric in a multi-stage heating dyeing mode, and the color fixation rate of the dyed product is obviously improved; the dyeing process is additionally provided with a consolidation dyeing stage, the product obtained after the consolidation dyeing stage is dyed uniformly without color lumps and spots, and the uniform dyeing rate is obviously improved.
Description
Technical Field
The invention relates to the field of dyeing and finishing processing, in particular to a grey dye of a light-dyed polyester fabric and a dyeing process thereof.
Background
The polyester fabric is a high-resilience and high-strength fiber fabric made of polyester fibers through spinning, and has the advantages of high wrinkle resistance and durability and strong shape retention, so that the polyester fabric is widely applied to the fields of case fabrics, outdoor fabrics, rain gear fabrics and the like; the polyester fabric needs dyeing and finishing after being made into an initial product, and can be endowed with different colors, and along with the improvement of social aesthetics, the requirements of people on the colors of the fabric are not limited by primary three primary colors and secondary colors, but have higher requirements on the three-primary colors with richer colors.
At present, the dyeing process of the polyester fabric mainly comprises an alkali decrement-high temperature and high pressure dyeing process, a hot melt dyeing process and a carrier dyeing process, for example, the publication number CN108660791B discloses a dyeing process of the polyester fabric, which comprises the following steps: firstly, high-alkali-resistant disperse dye is used for dyeing polyester fabric at high temperature and high pressure, then the dyed polyester fabric is treated by alkaline solution, and then reduction cleaning and water washing are carried out; wherein the pH of the alkaline solution is above 9; according to the dyeing process for the polyester fabric, the high-alkali-resistance disperse dye is selected, the conventional process flows of alkali liquor treatment, washing, high-temperature high-pressure disperse dyeing, reduction cleaning and washing processing of the polyester fabric are broken through, the process flows of high-temperature high-pressure disperse dyeing, alkali liquor treatment, reduction cleaning and washing are reconstructed, the color depth of the dyed polyester fabric is obviously improved, the alkali reduction efficiency of the polyester fabric is improved, the waste of water resources and the water pollution caused by the dyeing process are reduced, and the dyeing process is energy-saving and environment-friendly; and as disclosed in publication No. CN107541959B, a low-temperature dyeing dye-guide for terylene, its preparation method and application are disclosed, the low-temperature dyeing dye-guide for terylene of the invention comprises the following components by mass: 40-60 salicylic acid ester, 20-40 carboxylic ester, 5-15 agricultural emulsifier 600# sulfonate and 5-15 emulsifier; the polyester low-temperature dyeing dye-guiding agent is suitable for a low-temperature dyeing process of polyester fibers, can remarkably reduce the vitrification temperature of the polyester fibers, and improves the dyeing speed and dyeing saturation value of disperse dyes; the terylene low-temperature dyeing dye-guiding agent also has obvious functions of dispersing, transfer dyeing and level dyeing on disperse dyes.
In the prior art, a high-temperature and high-pressure dyeing process is the most common dyeing method, but the method is used for dyeing the polyester fabric by adopting a single-stage heating dyeing process, the problems of low fixation rate and color spots and color blocks of the dyed fabric occur, the dyeing process needs to be carried out in multiple steps, and the operation is complex, so that the application provides the grey dye series for the light-dyed polyester fabric and the dyeing process thereof.
Disclosure of Invention
In order to solve the problems that the single-stage heating dyeing method in the prior art can cause low fixation rate and color spots and color blocks on the fabric, the application provides a mixed dye product capable of carrying out light-dyeing gray series color on the polyester fabric, and the product can be directly added into water to prepare a dye solution, so that the processing procedures are reduced, and the industrial production is easy to realize; the application also provides a dyeing process of the light-dyed polyester fabric, the process performs light dyeing on the polyester fabric in a multi-stage heating dyeing mode, the dyed product has no color block and color spot, and the fixation rate is remarkably improved.
The specific technical scheme of the invention is as follows:
the grey dye for the polyester fabric comprises the following components in parts by weight: 0.1-1 parts of gray dye, 0.05-0.5 part of dispersing agent and 0.08-0.8 part of detergent, wherein the gray dye is prepared by mixing the dispersing dye, and the dye concentration of the gray dye is 0.1-1%.
The application provides a grey dye for polyester fabrics, which is prepared by mixing three disperse dyes in proportion and can be used for lightly dyeing the polyester fabrics, and after the dye provided by the application is used for lightly dyeing the polyester fabrics, the dye is uniformly dyed without specks and color blocks, and the fixation rate is obviously improved; meanwhile, the dye can be directly added into water to prepare dye solution, and is not required to be added successively in the dyeing process, so that the processing procedures are reduced, and the industrial production is easier.
Preferably, the dispersing agent is an alkaline dispersing and leveling agent PT-90, and the cleaning agent is a sand removing agent.
A dyeing process of a grey dye of a light-dyed polyester fabric is characterized by comprising the following steps:
(1) adding a grey dye of the light-dyed polyester fabric into water to prepare a dye solution;
(2) soaking the polyester fabric into a dye solution;
(3) sequentially carrying out first-stage dyeing, second-stage dyeing and third-stage dyeing;
(4) carrying out consolidation dyeing;
(5) cooling, cleaning and drying.
The application also provides a dyeing process of the grey dye system for the lightly dyed polyester fabric, and the applicant discovers that the dyed polyester fabric has low fixation rate and color blocks of color spots after using the dyeing process in the prior art, and obtains the problems through analysis that the dyeing process in the prior art is generally single dye, and single-stage heating dyeing is adopted during dyeing, the dyeing process is not suitable for the processing production of the lightly dyed polyester fabric by mixed dyes, when the polyester fabric is lightly dyed, the dye concentration is less than or equal to 1 percent, the color rendering degree of the polyester fabric is greatly influenced by the fixation rate, when the fixation rate is low, the finally prepared polyester fabric with lighter color is easy to observe the color blocks of the color spots, when the single-stage heating dyeing is used for carrying out the dyeing of the mixed dyes on the polyester fabric, because different dyes have different heat-resisting temperatures during processing, the method comprises the steps that low-temperature dye, medium-temperature dye and high-temperature dye are adopted, the dye uptake of the three dyes at different temperatures is different, in the temperature rising process, the low-temperature dye, the medium-temperature dye and the high-temperature dye sequentially reach respective rapid dye uptake temperature intervals and rapid dyeing is carried out on polyester fibers, when the temperature of a dyeing environment exceeds the heat-resisting temperature of the low-temperature dye and the medium-temperature dye, the dyed low-temperature dye and the dyed medium-temperature dye are not firmly dispersed in the polyester fibers, the phenomenon that dye molecules of the dyed dye diffuse into dye liquor can occur, and finally the polyester fabrics are colored spots and blocks.
The application provides a dye technology is that multistage formula intensification dyeing is directly adopted, heat-resisting temperature difference according to different dyestuffs in the dye sets up the intensification dyeing of stage formula, every section intensification dyeing in-process, the dyestuff that is in the best rate of dyeing can dye fast, and through the heat preservation fixation make the dyestuff that has dyed firmly disperse in dacron fibre inside, along with the rising of temperature, the dyestuff that has dyed can not take place the decoloration diffusion because of the high temperature, simultaneously, this application has increased the consolidation dyeing technology behind the dyeing stage, the phenomenon that the dyestuff can take place the migration of being heated when ambient temperature exceedes 130 ℃, the dyestuff molecule can migrate from the fibre inside to the fibre outside, this application makes the dyestuff that has dyed take place slight migration through the high temperature heat preservation of certain time, thereby make the dyestuff molecule disperse more evenly on dacron fibre, can show improvement dacron fabric finished product level dyeing rate, the effect of color spots and blocks is continuously reduced.
Preferably, the bath ratio of the dye liquor to the polyester fabric in the step (1) is 1: 10-100, the initial temperature of the dye liquor is 55-65 ℃, and the pH value is 6.5-7.5.
Preferably, the temperature gradient of the first-stage dyeing in the step (3) is 60-90 ℃, the heating rate is 0.6-0.8 ℃/min, and the heat preservation time is 1-10 min.
Preferably, the temperature gradient of the two-stage dyeing in the step (3) is 90-100 ℃, the heating rate is 0.7-0.9 ℃/min, and the heat preservation time is 1-10 min.
Preferably, the three-stage dyeing in the step (3) has a temperature gradient of 100-135 ℃, a heating rate of 0.5-1.5 ℃/min and a heat preservation time of 1-10 min.
Preferably, the temperature gradient of the consolidated dyeing in the step (4) is 115-135 ℃, the heating rate is 1-5 ℃/min, and the heat preservation time is 20 min.
Preferably, the cooling rate is 3-5 ℃/min.
Compared with the prior art, the method has the following technical effects:
(1) the application provides a mixed dye product capable of carrying out light grey color dyeing on polyester fabrics, the product can be directly added into water to prepare dye solution, the processing procedures are reduced, and the industrial production is easy to realize;
(2) the application also provides a dyeing process of the light-dyed polyester fabric, the process performs light dyeing on the polyester fabric in a multi-stage heating dyeing mode, and the color fixation rate of the dyed product is obviously improved;
(3) the application provides still increased the consolidation dyeing stage among the dyeing process, the even colorless block color spot of product dyeing after the consolidation dyeing stage, and level dyeing rate is showing and is improving.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1:
the grey dye for the polyester fabrics comprises the following components in parts by weight: 1 part of gray dye, 0.5 part of basic dispersion leveling agent PT-90 and 0.8 part of sand removing agent, wherein the gray dye comprises 0.57 part of disperse blue 2BLN, 0.73 part of disperse orange and 0.67 part of disperse 3B red, and the dye concentration of the gray dye is 1%.
A dyeing process of a grey dye series for light-dyed polyester fabrics comprises the following steps:
(1) adding a grey dye of a light-dyed polyester fabric into water to prepare a dye solution, wherein the initial temperature of the dye solution is 60 ℃;
(2) soaking the polyester fabric into a dye liquor, wherein the bath ratio of the dye liquor to the polyester fabric is 1: 25;
(3) sequentially carrying out first-stage dyeing, second-stage dyeing and third-stage dyeing, wherein the first-stage dyeing temperature gradient is 60-90 ℃, the heating rate is 0.7 ℃/min, the heat preservation time at 90 ℃ is 5min, the second-stage dyeing temperature gradient is 90-100 ℃, the heating rate is 0.8 ℃/min, the heat preservation time at 100 ℃ is 5min, the third-stage dyeing temperature gradient is 100-115 ℃, the heating rate is 3 ℃/min, and the heat preservation time at 115 ℃ is 5 min; (4) carrying out consolidation dyeing, wherein the temperature gradient of the consolidation dyeing is 115-135 ℃, the heating rate is 3 ℃/min, and the heat preservation time is 20 min; (5) cooling, cleaning and drying are carried out, wherein the cooling rate is 3 ℃/min, and the drying temperature is 80 ℃.
Example 2:
the grey dye for the polyester fabrics comprises the following components in parts by weight: 1 part of gray dye, 0.5 part of basic dispersing and leveling agent PT-90 and 0.8 part of sand removing agent, wherein the gray dye comprises 2.22 parts of disperse blue 2BLN, 1.85 parts of disperse orange and 0.645 parts of disperse Gighua ruby, and the dye concentration of the gray dye is 1%.
A dyeing process of a grey dye of a light-dyed polyester fabric comprises the following steps:
(1) adding a grey dye of a light-dyed polyester fabric into water to prepare a dye solution, wherein the initial temperature of the dye solution is 60 ℃;
(2) soaking the polyester fabric into a dye liquor, wherein the bath ratio of the dye liquor to the polyester fabric is 1: 20;
(3) sequentially carrying out first-stage dyeing, second-stage dyeing and third-stage dyeing, wherein the first-stage dyeing temperature gradient is 60-90 ℃, the heating rate is 0.7 ℃/min, the heat preservation time at 90 ℃ is 5min, the second-stage dyeing temperature gradient is 90-100 ℃, the heating rate is 0.8 ℃/min, the heat preservation time at 100 ℃ is 5min, the third-stage dyeing temperature gradient is 100-115 ℃, the heating rate is 0.5 ℃/min, and the heat preservation time at 115 ℃ is 5 min; (4) carrying out consolidation dyeing, wherein the temperature gradient of the consolidation dyeing is 115-135 ℃, the heating rate is 3 ℃/min, and the heat preservation time is 20 min; (5) cooling, cleaning and drying are carried out, wherein the cooling rate is 3 ℃/min, and the drying temperature is 80 ℃.
Example 3:
the grey dye for the polyester fabrics comprises the following components in parts by weight: 1 part of gray dye, 0.5 part of basic dispersion leveling agent PT-90 and 0.8 part of sand removing agent, wherein the gray dye comprises 3.3 parts of disperse blue 2BLN, 2.4 parts of disperse orange and 0.7 part of Jihua disperse ruby, and the dye concentration of the gray dye is 1%.
A dyeing process of a grey dye series for light-dyed polyester fabrics comprises the following steps:
(1) adding a grey dye of a light-dyed polyester fabric into water to prepare a dye solution, and adjusting the initial temperature of the pH dye solution of the dye solution to 60 ℃ by using 1kg of glacial acetic acid;
(2) soaking the polyester fabric into a dye liquor, wherein the bath ratio of the dye liquor to the polyester fabric is 1: 25;
(3) sequentially carrying out first-stage dyeing, second-stage dyeing and third-stage dyeing, wherein the first-stage dyeing temperature gradient is 60-90 ℃, the heating rate is 0.7 ℃/min, the heat preservation time at 90 ℃ is 5min, the second-stage dyeing temperature gradient is 90-100 ℃, the heating rate is 0.8 ℃/min, the heat preservation time at 100 ℃ is 5min, the third-stage dyeing temperature gradient is 100-115 ℃, the heating rate is 0.5 ℃/min, and the heat preservation time at 115 ℃ is 5 min; (4) carrying out consolidation dyeing, wherein the temperature gradient of the consolidation dyeing is 115-135 ℃, the heating rate is 3 ℃/min, and the heat preservation time is 20 min; (5) cooling, cleaning and drying are carried out, wherein the cooling rate is 3 ℃/min, and the drying temperature is 80 ℃.
Comparative example 1: (Single-stage heating high-pressure high-temperature dyeing)
Compared with the example 1, the dyeing process adopts single temperature rise high-temperature high-pressure dyeing, the dyeing temperature interval is 60-120 ℃, the temperature rise rate is 0.9 ℃/min, then the temperature rise is from 120 ℃ to 130 ℃, the temperature rise rate is 3 ℃/min, the temperature is kept at 130 ℃ for 10min, and the rest conditions are the same as those of the example 1.
Comparative example 2:
compared with the example 2, the dyeing process adopts single temperature rise high-temperature high-pressure dyeing, the dyeing temperature interval is 60-120 ℃, the temperature rise rate is 0.9 ℃/min, then the temperature rise is from 120 ℃ to 130 ℃, the temperature rise rate is 3 ℃/min, the temperature is kept at 130 ℃ for 10min, and the rest conditions are the same as those of the example 2.
Comparative example 3:
compared with the embodiment 3, the dyeing process adopts single temperature rise high-temperature high-pressure dyeing, the dyeing temperature interval is 60-120 ℃, the temperature rise rate is 0.9 ℃/min, then the temperature rise is from 120 ℃ to 130 ℃, the temperature rise rate is 3 ℃/min, the temperature is kept at 130 ℃ for 10min, and the rest conditions are the same as the embodiment 3.
Comparative example 4:
compared with example 1, no consolidation dyeing is carried out in the dyeing process, and the rest conditions are the same as example 1.
Comparative example 5:
compared with the example 2, no consolidation dyeing is carried out in the dyeing process, and the rest conditions are the same as the example 2.
Comparative example 6:
compared with example 3, no consolidation dyeing is carried out in the dyeing process, and the rest conditions are the same as example 3.
Detection example 1:
examples 1 to 3 and comparative examples 1 to 6 were each carried out in (type of dyeing machine) and the fixation and level dyeing rates of the products obtained in the above tests were respectively measured, and the measurement steps included:
(1) the color fixation rate test method comprises the following steps: the color fixing rate is the ratio of the dye concentration in the residual liquid after dyeing to the dye concentration in the undyed dye liquor, the dye concentration of the mixed dye liquor is tested by adopting a spectrophotometry method, a 721 spectrophotometer is adopted to measure a sample to be tested under the wavelength of 380-730 nm, a standard solution of the mixed dye is prepared to test absorbance, a cone calibration curve is drawn, and the dye concentration of the sample to be tested is calculated through the standard curve.
(2) The leveling rate test method comprises the following steps: and (3) irradiating the polyester fabric by using a visible light source, and observing the color and flower condition of the fabric.
(3) And (6) testing results.
TABLE 1 fixation and level dyeing of lightly dyed polyester fabrics
| Fixation ratio (%) | Rate of level dyeing | |
| Example 1 | 78.2 | Without obvious color flower |
| Example 2 | 72.4 | Without obvious color flower |
| Example 3 | 71.9 | Without obvious color flower |
| Comparative example 1 | 57.1 | Colorful flower |
| Comparative example 2 | 56.8 | Colorful flower |
| Comparative example 3 | 53.9 | Colorful flower |
| Comparative example 4 | 63.1 | Has slight color flower |
| Comparative example 5 | 61.6 | Has slight color flower |
| Comparative example 6 | 58.4 | Has slight color |
The detection results of the lightly dyed polyester fabrics prepared in examples 1 to 3 and comparative examples 1 to 6 are shown in table 1: the fixation rates of the embodiments 1-3 are obviously higher than those of the comparative examples 1-6, which shows that the fixation rate of the dye is obviously higher than that of the prior art, and the product prepared by the dye has high level dyeing rate, no obvious color spots or color blocks, and high quality of the product obtained by dyeing.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. The grey dye for the light-dyed polyester fabric is characterized by comprising the following components in parts by weight: 0.1-1 parts of gray dye, 0.05-0.5 part of dispersing agent and 0.08-0.8 part of cleaning agent, wherein the gray dye is prepared by mixing the dispersing dye, and the dye concentration of the gray dye is 0.1-1%.
2. The gray dye for lightly dyeing polyester fabric according to claim 1, wherein the dispersant is alkaline dispersion leveling agent PT-90, and the cleaning agent is a sand removing agent.
3. The dyeing process of the grey dye for the light-dyed polyester fabric according to any one of claims 1 to 2, which is characterized by comprising the following steps:
(1) adding a grey dye of the light-dyed polyester fabric into water to prepare a dye solution;
(2) soaking the polyester fabric into a dye solution;
(3) sequentially carrying out first-stage dyeing, second-stage dyeing and third-stage dyeing;
(4) carrying out consolidation dyeing;
(5) cooling, cleaning and drying.
4. The dyeing process of the grey dye for the light-dyed polyester fabric as claimed in claim 3, wherein the bath ratio of the dye solution to the polyester fabric in the step (1) is 1: 10-100, the initial temperature of the dye solution is 55-65 ℃, and the pH value is 6.5-7.5.
5. The dyeing process of the grey dye for the light-dyed polyester fabric as claimed in claim 3, wherein the dyeing temperature gradient in the first step (3) is 60-90 ℃, the temperature rise rate is 0.6-0.8 ℃/min, and the heat preservation time is 1-10 min.
6. The dyeing process of the grey dye for the light-dyed polyester fabrics as claimed in claim 3, wherein the temperature gradient of the second-stage dyeing in the step (3) is 90-100 ℃, the temperature rise rate is 0.7-0.9 ℃/min, and the holding time is 1-10 min.
7. The dyeing process of the grey dye for the light-dyed polyester fabric as claimed in claim 3, wherein the three-stage dyeing in the step (3) has a temperature gradient of 100-135 ℃, a temperature rise rate of 0.5-1.5 ℃/min and a heat preservation time of 1-10 min.
8. The dyeing process of the grey dye for the light-dyed polyester fabric as claimed in claim 3, wherein the temperature gradient of the consolidated dyeing in the step (4) is 115-135 ℃, the temperature rise rate is 1-5 ℃/min, and the holding time is 20 min.
9. The dyeing process of the grey dye for lightly dyed polyester fabrics as claimed in claim 3, wherein the cooling rate is 3-5 ℃/min.
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| CN104448929A (en) * | 2014-12-31 | 2015-03-25 | 浙江闰土股份有限公司 | Grey disperse dye compound, disperse dye and preparation method and usage of disperse dye |
| CN104878618A (en) * | 2015-05-21 | 2015-09-02 | 互太(番禺)纺织印染有限公司 | Method for dyeing superfine terylene fabric |
| CN108660791A (en) * | 2018-03-30 | 2018-10-16 | 江南大学 | A kind of dacron dyeing |
| CN109403097A (en) * | 2018-11-20 | 2019-03-01 | 杭州航民达美染整有限公司 | Method of stepped sectional dyeing and finishing method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448929A (en) * | 2014-12-31 | 2015-03-25 | 浙江闰土股份有限公司 | Grey disperse dye compound, disperse dye and preparation method and usage of disperse dye |
| CN104878618A (en) * | 2015-05-21 | 2015-09-02 | 互太(番禺)纺织印染有限公司 | Method for dyeing superfine terylene fabric |
| CN108660791A (en) * | 2018-03-30 | 2018-10-16 | 江南大学 | A kind of dacron dyeing |
| CN109403097A (en) * | 2018-11-20 | 2019-03-01 | 杭州航民达美染整有限公司 | Method of stepped sectional dyeing and finishing method |
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