CN116024830A - Polyester fiber, anhydrous dyeing method thereof and shoes - Google Patents
Polyester fiber, anhydrous dyeing method thereof and shoes Download PDFInfo
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- CN116024830A CN116024830A CN202310062303.5A CN202310062303A CN116024830A CN 116024830 A CN116024830 A CN 116024830A CN 202310062303 A CN202310062303 A CN 202310062303A CN 116024830 A CN116024830 A CN 116024830A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 207
- 229920000728 polyester Polymers 0.000 title claims abstract description 189
- 239000000835 fiber Substances 0.000 title claims abstract description 184
- 238000000034 method Methods 0.000 title claims abstract description 61
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 170
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 85
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 85
- 239000004744 fabric Substances 0.000 claims abstract description 40
- 238000004804 winding Methods 0.000 claims abstract description 6
- 238000004090 dissolution Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- VGKYEIFFSOPYEW-UHFFFAOYSA-N 2-methyl-4-[(4-phenyldiazenylphenyl)diazenyl]phenol Chemical compound Cc1cc(ccc1O)N=Nc1ccc(cc1)N=Nc1ccccc1 VGKYEIFFSOPYEW-UHFFFAOYSA-N 0.000 claims description 4
- TUXJTJITXCHUEL-UHFFFAOYSA-N disperse red 11 Chemical compound C1=CC=C2C(=O)C3=C(N)C(OC)=CC(N)=C3C(=O)C2=C1 TUXJTJITXCHUEL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000975 dye Substances 0.000 description 76
- 239000012530 fluid Substances 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 11
- 238000000926 separation method Methods 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
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- FDTLQXNAPKJJAM-UHFFFAOYSA-N 2-(3-hydroxyquinolin-2-yl)indene-1,3-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C1C1=NC2=CC=CC=C2C=C1O FDTLQXNAPKJJAM-UHFFFAOYSA-N 0.000 description 4
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- MHXFWEJMQVIWDH-UHFFFAOYSA-N 1-amino-4-hydroxy-2-phenoxyanthracene-9,10-dione Chemical compound C1=C(O)C=2C(=O)C3=CC=CC=C3C(=O)C=2C(N)=C1OC1=CC=CC=C1 MHXFWEJMQVIWDH-UHFFFAOYSA-N 0.000 description 2
- ZDORFLXCSSFUIE-UHFFFAOYSA-N 2-[n-(2-acetyloxyethyl)-4-[(2-chloro-4-nitrophenyl)diazenyl]-3-(propanoylamino)anilino]ethyl acetate Chemical compound CCC(=O)NC1=CC(N(CCOC(C)=O)CCOC(C)=O)=CC=C1N=NC1=CC=C([N+]([O-])=O)C=C1Cl ZDORFLXCSSFUIE-UHFFFAOYSA-N 0.000 description 2
- 240000002129 Malva sylvestris Species 0.000 description 2
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- 238000007639 printing Methods 0.000 description 2
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- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
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- 229920000742 Cotton Polymers 0.000 description 1
- QSJXEFYPDANLFS-UHFFFAOYSA-N Diacetyl Chemical group CC(=O)C(C)=O QSJXEFYPDANLFS-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
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- 235000009120 camo Nutrition 0.000 description 1
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- 239000011487 hemp Substances 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
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- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
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- 150000003384 small molecules Chemical class 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920006304 triacetate fiber Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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Classifications
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- 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
Abstract
The invention provides a polyester fiber, a waterless dyeing method thereof and a shoe, wherein the polyester fiber is rectangular, the polyester fiber comprises an upper layer, a middle layer and a lower layer, the upper layer and the lower layer are polyester multifilament, the middle layer is polyester monofilament, and the waterless dyeing method of the polyester fiber comprises the following steps: extracting oil from the polyester fiber to obtain deoiled polyester fiber; winding the deoiling polyester fiber on a dyeing shaft, binding and fixing the deoiling polyester fiber on the dyeing shaft by using a cloth rope, and filling the dyeing shaft for fixing the deoiling polyester fiber into a vertical dyeing kettle; dissolving a dye in supercritical carbon dioxide; wherein, the supercritical carbon dioxide is carbon dioxide with the temperature of more than or equal to 31.1 ℃ and the pressure of more than or equal to 7.39 Mpa; introducing supercritical carbon dioxide of dissolved dye into a vertical dyeing kettle to perform anhydrous dyeing on the deoiled polyester fiber.
Description
Technical Field
The invention relates to the technical field of anhydrous dyeing, in particular to a polyester fiber, an anhydrous dyeing method thereof and shoes.
Background
At present, in the chemical fiber textile printing and dyeing field, the mainstream material is polyester fiber, commonly called as polyester, which is synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol, the polyester has a plurality of excellent textile performances, has wide application, can be purely woven, can be blended and interweaved with natural fibers such as cotton, wool, silk, hemp and the like and other chemical fibers, but the polyester fiber has strong hydrophobicity, the polyester macromolecule has no active group, the common dye is not high in coloring rate, only the disperse dye is used for dyeing, but in the process, a large amount of auxiliary agents are needed for cleaning after dyeing is finished, the annual water consumption and the discharge of dyeing water in the textile industry make the situation of water resources unfavorable, and the development of a novel green and clean dyeing technology is a focus of attention of the textile dyeing and finishing industry in recent years.
Supercritical CO 2 Dyeing is carried out by CO under supercritical state 2 Is a dyeing medium, uses its strong dissolving ability to dissolve dye, uses its high diffusivity to permeate dye into fiber interior to make dyeing, and uses supercritical CO 2 Dyeing can not only shorten dyeing time, but also improve the uniformity of the color on the polyester fiber fabric.
The research result shows that the supercritical dyeing technology is suitable for dyeing polyester fiber fabrics and cheeses, and the color fastness is close to the performance of the water dyeing technology, but no matter the cloth rolls or the cheeses, the color difference between the outer layer, the middle layer and the inner layer exists.
Therefore, the anhydrous dyeing method of the polyester fiber of the shoe material is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to solve or improve the technical problems of high water cost and serious wastewater pollution in the traditional water bath dyeing process.
The first aspect of the present invention is to provide a method for anhydrous dyeing of polyester fibers.
A second aspect of the present invention is to provide a polyester fiber.
A third aspect of the invention is to provide a shoe.
The invention provides an anhydrous dyeing method of polyester fiber, wherein the polyester fiber is rectangular, the polyester fiber comprises an upper layer, a middle layer and a lower layer, the upper layer and the lower layer are polyester multifilament, the middle layer is polyester monofilament, and the anhydrous dyeing method of the polyester fiber comprises the following steps: extracting oil from the polyester fiber to obtain deoiled polyester fiber; winding the deoiling polyester fiber on a dyeing shaft, binding and fixing the deoiling polyester fiber on the dyeing shaft by using a cloth rope, and filling the dyeing shaft for fixing the deoiling polyester fiber into a vertical dyeing kettle; dissolving a dye in supercritical carbon dioxide; wherein, the supercritical carbon dioxide is carbon dioxide with the temperature of more than or equal to 31.1 ℃ and the pressure of more than or equal to 7.39 Mpa; introducing supercritical carbon dioxide of dissolved dye into a vertical dyeing kettle to perform anhydrous dyeing on the deoiled polyester fiber.
The invention provides a method for anhydrous dyeing of polyester fiber, which utilizes CO on one hand 2 The method replaces the traditional aqueous medium, realizes clean dyeing of the polyester fiber, solves the problems of high pollution, high energy consumption and poor safety of the polyester fiber dyeing process, and has positive significance for environmental protection, recycling of resources and development of polyester fiber products. On the other hand, the traditional horizontal dyeing kettle is provided with 1 feed inlet and 1 discharge outlet, and the feed inlet and the discharge outlet have siphon effect, so that CO is caused 2 The dyeing kettle adopted by the invention is a cylindrical vertical dyeing kettle, which is different from the traditional horizontal dyeing kettle, can enable supercritical carbon dioxide fluid to flow fully to form turbulence, and simultaneously keep stable pressure in the dyeing process, so that the upper layer, the middle layer and the lower layer of the polyester fiber are dyed uniformly.
In the technical scheme, the length and the width of the polyester fiber are 20m multiplied by 10m.
In the above technical solution, the step of extracting the oil from the polyester fiber to obtain the deoiled polyester fiber comprises: continuously introducing supercritical carbon dioxide into the surface of the polyester fiber to remove oil in the polyester fiber through the supercritical carbon dioxide, thereby obtaining the deoiled polyester fiber; wherein, the duration of continuous carbon dioxide in supercritical state is more than or equal to 5min and less than or equal to 25min.
In the technical scheme, in the process of deoiling the polyester fiber, supercritical carbon dioxide is continuously introduced to the surface of the polyester fiber, so that oil in the polyester fiber is removed through the supercritical carbon dioxide, the deoiled polyester fiber is obtained, and compared with the traditional deoiling method, the deoiling method through the supercritical carbon dioxide is environment-friendly and has high deoiling efficiency. In addition, the deoiling time is controlled to be more than or equal to 5min and less than or equal to 25min, so that the polyester fiber can be ensured to be fully deoiled, the overlong time can be avoided, and the efficiency is reduced.
In the above technical scheme, before continuously introducing supercritical carbon dioxide to the surface of the polyester fiber, the method further comprises: carbon dioxide is continuously introduced into the space where the polyester fiber is positioned so as to make the space where the polyester fiber is positioned in a vacuum state.
In the technical scheme, before deoiling through supercritical carbon dioxide, carbon dioxide is continuously introduced into the space where the polyester fiber is located, so that the space where the polyester fiber is located is in a vacuum state, the supercritical carbon dioxide and the polyester fiber can be ensured to be fully contacted, and the deoiling efficiency is improved.
In the technical scheme, the mass ratio of the dye to the polyester fiber is more than or equal to 0.1% and less than or equal to 10%.
In the technical scheme, the mass ratio of the dye to the polyester fiber is controlled to be more than or equal to 0.1% and less than or equal to 10%, so that the dyeing efficiency can be ensured, waste caused by excessive dye can be avoided, and poor dyeing effect caused by too little dye can be avoided. Further, the mass ratio of the dye to the polyester fiber is 0.2% or more and 5% or less.
In the above technical solution, the dye is one of disperse red, disperse yellow or disperse blue.
In this technical scheme, the dye is one of disperse red, disperse yellow or disperse blue. Further, the dye is one of disperse red 167, disperse yellow 54 or disperse blue 56.
In the technical scheme, in the anhydrous dyeing process, the dyeing temperature is more than or equal to 80 ℃ and less than or equal to 140 ℃; the dyeing pressure is more than or equal to 16Mpa and less than or equal to 30Mpa; the dyeing time is more than or equal to 30min and less than or equal to 120min.
In the technical scheme, the dyeing temperature is greater than or equal to 80 ℃ and less than or equal to 140 ℃, the dyeing temperature is further greater than or equal to 110 ℃ and less than or equal to 130 ℃, the dyeing pressure is greater than or equal to 16Mpa and less than or equal to 30Mpa, the dyeing pressure is further greater than or equal to 22Mpa and less than or equal to 24Mpa, the dyeing time is greater than or equal to 30min and less than or equal to 120min, the dyeing time is further greater than or equal to 40min and less than or equal to 60min, and the dyeing efficiency can be ensured by controlling parameters such as the dyeing temperature, the dyeing pressure, the dyeing time and the like, so that the upper layer, the middle layer and the lower layer of the polyester fiber are uniformly dyed.
In the technical scheme, when the dye is dissolved in supercritical carbon dioxide, the dissolution temperature is more than or equal to 40 ℃ and less than or equal to 80 ℃, and the dissolution pressure is more than or equal to 13Mpa and less than or equal to 22Mpa.
In the technical scheme, when the dye is dissolved in supercritical carbon dioxide, the dissolution temperature is more than or equal to 40 ℃ and less than or equal to 80 ℃, the dissolution temperature is further 60 ℃, the dissolution pressure is more than or equal to 13Mpa and less than or equal to 22Mpa, the dissolution pressure is further 18Mpa, and the dye can be fully dissolved in supercritical carbon dioxide by controlling the dissolution temperature and the dissolution pressure, so that the later dyeing efficiency is ensured.
In the above technical solution, the anhydrous dyeing method of polyester fiber further comprises: separating dye which does not carry out anhydrous dyeing on the deoiling polyester fiber from supercritical carbon dioxide; and recovering supercritical carbon dioxide after separating the dye.
In the technical scheme, after anhydrous dyeing is carried out, the dye which does not carry out anhydrous dyeing on the deoiling polyester fiber is separated from the supercritical carbon dioxide, and the supercritical carbon dioxide after separating the dye is recovered, so that the cyclic utilization of the carbon dioxide can be realized, and the utilization rate of energy sources is improved.
In a second aspect, the present invention provides a polyester fiber, which is obtained by dyeing the polyester fiber according to any one of the first aspect of the present application by the anhydrous dyeing method.
In a third aspect, the invention provides a shoe, which comprises the polyester fiber according to the second aspect of the application.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of embodiments according to the present invention will be apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 shows a schematic flow chart of an anhydrous dyeing method of polyester fiber provided by an embodiment of the invention;
FIG. 2 is a schematic flow chart of a method for anhydrous dyeing of polyester fibers according to still another embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for anhydrous dyeing of polyester fibers according to another embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for anhydrous dyeing of polyester fibers according to still another embodiment of the present invention;
fig. 5 shows a schematic structural diagram of an anhydrous dyeing apparatus for polyester fiber according to an embodiment of the present invention.
The correspondence between the names and the reference numerals of the components in fig. 5 is as follows:
1 dye kettle, 2 dyeing kettle, 3 separation kettle, 4 heating device, 5 condenser, 6 carbon dioxide storage tank, 7 circulating pump, 8 force (forcing) pump, 9 pressurization valve.
Detailed Description
In order that the above-recited aspects, features and advantages of embodiments according to the present invention can be more clearly understood, a further detailed description of embodiments according to the present invention will be rendered by reference to the appended drawings and detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced otherwise than as described herein, and thus the scope of protection according to embodiments of the invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the anhydrous dyeing method of the polyester fiber provided by one embodiment of the present invention comprises the following steps:
s102, performing S102; extracting oil from the polyester fiber to obtain deoiled polyester fiber;
s104: winding the deoiling polyester fiber on a dyeing shaft, binding and fixing the deoiling polyester fiber on the dyeing shaft by using a cloth rope, and filling the dyeing shaft for fixing the deoiling polyester fiber into a vertical dyeing kettle;
s106: dissolving a dye in supercritical carbon dioxide; wherein, the supercritical carbon dioxide is carbon dioxide with the temperature of more than or equal to 31.1 ℃ and the pressure of more than or equal to 7.39 Mpa;
s108: introducing supercritical carbon dioxide of dissolved dye into a vertical dyeing kettle to perform anhydrous dyeing on the deoiled polyester fiber.
The invention provides a method for anhydrous dyeing of polyester fiber, which is especially suitable for anhydrous dyeing of polyester fiber of shoe material, the polyester fiber fabric of the invention is shoe material mesh cloth, and consists of an upper surface, a middle surface and a lower surface, wherein the upper surface and the lower surface are polyester multifilament, the middle connecting filaments are polyester monofilament, the thickness is generally 2-4mm, a dense net is arranged under the fabric, and the fastness and the color degree of the fabric are enhanced, and the method for anhydrous dyeing of the polyester fiber comprises the following steps: extracting oil from the polyester fiber to obtain deoiled polyester fiber; winding the deoiling polyester fiber on a dyeing shaft, binding and fixing the deoiling polyester fiber on the dyeing shaft by using a cloth rope, and filling the dyeing shaft for fixing the deoiling polyester fiber into a vertical dyeing kettle; dissolving a dye in supercritical carbon dioxide; wherein, the supercritical carbon dioxide is carbon dioxide with the temperature of more than or equal to 31.1 ℃ and the pressure of more than or equal to 7.39 Mpa; introducing supercritical carbon dioxide of dissolved dye into a vertical dyeing kettle to perform anhydrous dyeing on the deoiled polyester fiber. Anhydrous dyeing method of polyester fiber of the present inventionOn the one hand, the method uses CO 2 The method replaces the traditional aqueous medium, realizes clean dyeing of the polyester fiber, solves the problems of high pollution, high energy consumption and poor safety of the polyester fiber dyeing process, and has positive significance for environmental protection, recycling of resources and development of polyester fiber products. On the other hand, the traditional horizontal dyeing kettle is provided with 1 feed inlet and 1 discharge outlet, and the feed inlet and the discharge outlet have siphon effect, so that CO is caused 2 The dyeing kettle adopted by the invention is a cylindrical vertical dyeing kettle, which is different from the traditional horizontal dyeing kettle, can enable supercritical carbon dioxide fluid to flow fully to form turbulence, simultaneously keep stable pressure in the dyeing process, ensure uniform dyeing of the upper layer, the middle layer and the lower layer of the polyester fiber, and solve the problem of chromatic aberration among the outer layer, the middle layer and the inner layer.
In the above examples, the length and width of the polyester fiber were 20m×10m.
In the above embodiment, in the process of deoiling the polyester fiber, supercritical carbon dioxide is continuously introduced to the surface of the polyester fiber, so that oil in the polyester fiber is removed through the supercritical carbon dioxide, and the deoiled polyester fiber is obtained, and compared with the traditional deoiling method, the deoiling through the supercritical carbon dioxide is environment-friendly and has high deoiling efficiency. In addition, the duration of carbon dioxide continuously introduced into the supercritical state is more than or equal to 5min and less than or equal to 25min, and the deoiling time is controlled to be more than or equal to 5min and less than or equal to 25min, so that the polyester fiber can be ensured to be fully deoiled, the overlong time can be avoided, and the efficiency is reduced.
In the above embodiment, before the supercritical carbon dioxide is deoiled, carbon dioxide is continuously introduced into the space where the polyester fiber is located, so that the space where the polyester fiber is located is in a vacuum state, and thus, the supercritical carbon dioxide and the polyester fiber can be ensured to be fully contacted, and the deoiling efficiency is improved.
In the above embodiment, the mass ratio of the dye to the polyester fiber is 0.1% or more and 10% or less, and the dyeing efficiency can be ensured by controlling the mass ratio of the dye to the polyester fiber, so that waste caused by too much dye can be avoided, and poor dyeing effect caused by too little dye can be avoided. Further, the mass ratio of the dye to the polyester fiber is 0.2% or more and 5% or less.
In the above embodiments, the dye is one of disperse red, disperse yellow or disperse blue. Further, the dye is one of disperse red 167, disperse yellow 54 or disperse blue 56. It can be understood that the dye provided by the invention is a disperse dye, has relatively small molecules and no water-soluble groups on the structure, and is mainly used for dyeing polyester fibers (polyester), acetate fibers (diacetyl fibers and triacetate fibers) and polyamide fibers (nylon) in chemical fibers, and has small application to polyacrylonitrile (acrylic fibers), and chemical fiber textile products subjected to dyeing and printing processing by the disperse dye are bright in color, excellent in washing fastness and wide in application.
In the above embodiment, in the anhydrous dyeing process, the dyeing temperature is 80 ℃ or higher and 140 ℃ or lower, further, the dyeing temperature is 110 ℃ or higher and 130 ℃ or lower, the dyeing pressure is 16Mpa or higher and 30Mpa or lower, further, the dyeing pressure is 22Mpa or higher and 24Mpa or lower, the dyeing time is 30min or higher and 120min or lower, further, the dyeing time is 40min or higher and 60min or lower, and the dyeing efficiency can be ensured by controlling the parameters of the dyeing temperature, the dyeing pressure, the dyeing time and the like, so that the upper layer, the middle layer and the lower layer of the polyester fiber are uniformly dyed.
In the above embodiment, when the dye is dissolved in the supercritical carbon dioxide, the dissolution temperature is greater than or equal to 40 ℃ and less than or equal to 80 ℃, further, the dissolution temperature is 60 ℃, the dissolution pressure is greater than or equal to 13Mpa and less than or equal to 22Mpa, further, the dissolution pressure is 18Mpa, and the dye can be ensured to be fully dissolved in the supercritical carbon dioxide by controlling the dissolution temperature and the dissolution pressure, so that the post dyeing efficiency is ensured.
In the above embodiment, after the anhydrous dyeing is performed, the dye which does not perform the anhydrous dyeing on the deoiled polyester fiber is separated from the supercritical carbon dioxide, and the supercritical carbon dioxide after the dye separation is recovered, so that the cyclic utilization of the carbon dioxide can be realized, and the utilization rate of energy sources is improved.
As shown in fig. 2 and 5, the method for dyeing polyester fiber in an anhydrous state according to another embodiment of the present invention comprises the steps of:
s202, charging;
specifically, after oil extraction is carried out on polyester fiber fabric with certain mass, the polyester fiber fabric is flatly wound on a dyeing shaft in a loose state, the outermost layer of the wound polyester fiber fabric is bound and fixed by a cloth rope, the polyester fiber fabric is filled into a dyeing kettle 2, and the weighed dye is placed in the dyeing kettle 1 and the dyeing kettle 2 is sealed.
S204: pressurizing CO 2 CO prepared into supercritical state 2 ；
Specifically, the heating device 4 connected to the dyeing kettle 2, the dyeing kettle 1 and the pressurizing pump 8 is opened, the carbon dioxide storage tank 6 is opened, carbon dioxide is allowed to flow into the condenser 5, and the CO stored in the storage tank after waiting for 2 to 3 minutes 2 Condensing into liquid state by condenser 5, opening pressurizing valve 9, and introducing CO by pressurizing pump 8 2 Filling the whole system, closing the pressurization when the pressure reaches a preset value, pressurizing by a pressurizing pump 8, and then performing CO under the action of a heating device 4 2 Heating to supercritical state.
S206: dissolving the dye;
specifically, the circulation pump 7 is turned on, the dyeing circulation is started, and when the temperature and the pressure reach preset values, the timing is started, and the CO is pressurized and heated to the supercritical state 2 The air flow enters the dye kettle 1 from the air flow inlet of the chassis of the dye kettle 1, and the air flow smoothly passes through the micropores of the dye placing cavity to be fully contacted and dissolved with the dye.
S208: dyeing polyester fiber fabric;
specifically, CO when the dye is in the supercritical state 2 After dissolution and saturation with CO 2 Fluid enters the tank body of the dyeing kettle 2 through the filtering membrane at the upper part to carry out anhydrous dyeing.
S210: separation of supercritical CO 2 ；
In particular, the method comprises the steps of,after dyeing is finished, supercritical CO 2 Separating the dye with the non-exhaustion dye in a separating kettle 3 after cooling and depressurization, and gas CO 2 And the polyester fiber fabric is condensed by a condenser 5 and returned to a carbon dioxide storage tank 6 to finish dyeing the polyester fiber fabric.
Further, after the dyeing kettle 2 is sealed in step S202, CO is introduced into the dyeing kettle 2 2 And discharging the air in the dyeing kettle 2.
Further, the polyester fiber fabric in step S202 is a rectangular cloth pattern having a length×width of 20m×10m.
Further, the oil extraction treatment time in step S202 is 10min to 20min.
Further, the step of extracting the oil in step S202 is the same as the dyeing step, the circulation pump 7 is turned on to extract the fiber oil, the supercritical carbon dioxide fluid with the oil is discharged after the treatment is completed, the supercritical carbon dioxide fluid with the oil flows into the separation kettle 3 through the pressure reducing valve and becomes gas, and the oil is discharged from the CO 2 Is precipitated in a separating kettle 3 and separated from the oil solution 2 The gas flows into the condenser 5 and becomes liquid CO 2 And back to the carbon dioxide storage tank 6.
Further, the ratio of the mass of the dye to the mass of the polyester fiber fabric in step S202 is 0.1% to 0.5%.
Further, in step S202, the dye is disperse dye disperse red 60.
Further, in step S204, when the temperature reaches 40 ℃ to 80 ℃ and the pressure reaches 13Mpa to 22Mpa, the introduction of the supercritical carbon dioxide fluid is stopped.
Further, the dyeing conditions in step S208 are: dyeing temperature is 90-120 ℃, pressure is 20-24 Mpa, and time is 40-60 min.
Further, the dyeing method in step S208 specifically includes:
heating the dye kettle 1 and the dyeing kettle 2, enabling supercritical carbon dioxide fluid to enter the dyeing kettle 2 from the dye kettle 1, stopping introducing the supercritical carbon dioxide fluid when the temperature reaches 90-120 ℃ and the pressure reaches 16-24 Mpa, then carrying out heat preservation dyeing circulation treatment on the polyester fiber fabric by the supercritical carbon dioxide fluid dissolved with the dye by means of a circulating pump 7 for 40-60 min, and releasing pressure after dyeing is finished to discharge the supercritical carbon dioxide fluid dissolved with the dye.
Further, the supercritical carbon dioxide fluid with the oil agent and the supercritical carbon dioxide fluid with the dye dissolved in the pressure release discharge are respectively subjected to a separation and recovery step after being discharged, and the oil agent or the dye is separated out and the gaseous CO is recovered through the separation and recovery step 2 A fluid.
Furthermore, in the processes of oil extraction and dyeing of polyester fiber fabrics, the separation and recovery steps are all carried out in the same separation and recovery device, and the separation and recovery device is a separation kettle 3.
Compared with the prior art, the invention has the following beneficial effects:
the traditional horizontal dyeing kettle is provided with 1 feed inlet and 1 discharge outlet, and the feed inlet and the discharge outlet have siphon effect, so that CO is caused 2 The dyeing kettle 2 cannot circulate in a circulating way, so that uneven dyeing is easy to cause, the adopted dyeing kettle is a cylindrical vertical dyeing kettle, and is different from the traditional horizontal dyeing kettle, a sealing ring is further arranged at the joint of the kettle cover and the feed inlet, the dyeing kettle is not easy to leak air in the dyeing process, supercritical carbon dioxide fluid can flow fully to form turbulent flow, and meanwhile, the pressure in the dyeing process is kept stable.
It should be emphasized that all the mentioned polyester fabrics in this application are made of polyester fibers.
As shown in fig. 3, the method for anhydrous dyeing of polyester fiber according to another embodiment of the present invention comprises the steps of:
s302: degreasing polyester fiber;
s304: dyeing of the deoiled polyester fibers.
Further, as shown in fig. 4 and 5, S302: the steps for degreasing the polyester fiber to obtain the degreased polyester fiber specifically comprise:
s3022: winding the polyester fiber fabric to a dyeing shaft;
s3024: loading the dyeing shaft into a dyeing kettle;
specifically, the length×width is 20m×10mThe dyed polyester fiber fabric with the mass of 10-20 g is flatly wound on a dyeing shaft in a loose state, the outermost layer of the wound polyester fiber fabric is bound and fixed by a cloth rope, the dyed polyester fiber fabric is filled into a dyeing kettle 2, the dyeing kettle 2 is sealed, and CO is introduced 2 And discharging the air in the dyeing kettle 2.
S3026: CO is processed by 2 CO prepared into supercritical state 2 ；
Specifically, the heating device 4 connected to the dyeing vessel 2 is turned on, the carbon dioxide storage tank 6 is opened, carbon dioxide is allowed to flow into the condenser 5, and the CO stored in the storage tank after waiting for 2 to 3 minutes 2 Condensed into liquid CO by a condenser 5 2 The pressurizing valve 9 is opened, and CO is pumped by the pressurizing pump 8 2 Filling the whole system, closing the pressurization when the pressure reaches a preset value, pressurizing by a pressurizing pump 8, and then performing CO under the action of a heating device 4 2 Heating to supercritical state.
S3028: extracting an oil agent;
specifically, the circulation pump 7 is turned on to extract the oil in the polyester fiber, and the oil in the polyester fiber is extracted for 10 to 20 minutes.
S30210: separating and recycling;
specifically, after the finish of the oil extraction, supercritical CO 2 The supercritical carbon dioxide fluid containing the oiling agent is cooled and depressurized in advance through a cooler, flows into a separation kettle 3 through a pressure reducing valve and becomes gas, and the oiling agent is discharged from CO 2 Is precipitated in a separating kettle 3 and separated from the oil solution 2 The gas flows into the condenser 5 and becomes liquid CO 2 And flows back to the carbon dioxide storage tank 6 to finish the degreasing of the polyester fiber fabric.
Further, S304: the dyeing step of the deoiled polyester fiber specifically comprises the following steps:
s3042: charging;
specifically, the polyester fiber fabric after degreasing is filled into a dyeing kettle 2, the weighed disperse red 60 dye is placed in a dye kettle 1, the dye amount is 0.5% of the weight of the polyester fiber fabric, the dyeing kettle 2 is sealed, and air in the dyeing kettle 2 is discharged.
S3044: pressurizing CO 2 CO prepared into supercritical state 2 ；
Specifically, the heating device 4 connected to the dye kettle 1, the dyeing kettle 2 and the pressurizing pump 8 is opened, the carbon dioxide storage tank 6 is opened, carbon dioxide flows into the condensing tank 5, and the CO stored in the storage tank after waiting for 2 to 3 minutes 2 Condensing into liquid state, simultaneously opening the pressurizing valve 9, and introducing CO through the pressurizing pump 8 2 Filling the whole system, closing the pressurization when the pressure reaches a preset value, pressurizing by a high-pressure pump 8, and then performing CO under the action of a heating device 4 2 Heating to supercritical state.
S3046: dissolving the dye;
specifically, the circulation pump 7 is turned on, the dyeing circulation is started, the carbon dioxide circulation rate is set to be 30 seconds/time, meanwhile, the temperature of a dyeing system formed by the whole supercritical carbon dioxide anhydrous dyeing equipment is raised, when the temperature and the pressure reach preset values, the timing is started, and the CO which is pressurized and heated to the supercritical state is heated 2 The air flow enters the dye kettle 1 from the air flow inlet of the chassis of the dye kettle 1, and the air flow smoothly passes through the micropores of the dye placing cavity to be fully contacted and dissolved with the dye.
S3048: dyeing;
specifically, the dye kettle 1 and the dyeing kettle 2 are heated to make supercritical CO 2 Fluid enters a dyeing kettle 2 from a dyeing kettle 1, and when the temperature reaches 120 ℃ and the pressure reaches 24Mpa, the supercritical CO is stopped being introduced 2 A fluid; the supercritical CO with the dissolved dye is then brought into contact with the circulating pump 7 2 The thermal insulation dyeing circulation treatment is carried out on the polyester fiber for 60min by the fluid, namely when the dye is in CO in the supercritical state 2 After dissolution and saturation with CO 2 Fluid enters the tank body of the dyeing kettle 2 through the filtering membrane at the upper part to carry out anhydrous dyeing.
S30440: separating and recycling;
specifically, after completion of dyeing, CO in supercritical state 2 Cooling and depressurizing in advance by a cooler, separating the dye with the non-exhaustion dye in a separating kettle 3, and gas CO 2 And the polyester fiber is condensed by a condenser 5 and returned to a carbon dioxide storage tank 6 to finish dyeing the polyester fiber.
Another embodiment of the present invention provides a method for dyeing a polyester fiber fabric for shoe materials without water, wherein the specific process is basically the same as the steps of the previous embodiment, and the difference is that: after filling the degreased polyester fiber fabric into the dyeing kettle 2, placing the weighed disperse yellow 54 dye into the dyeing kettle 1, wherein the dye is 0.5% of the weight of the polyester fiber fabric, namely the dye is different from the previous embodiment, and the embodiment uses the disperse yellow 54 as the dye.
Another embodiment of the present invention provides a method for dyeing a polyester fiber fabric for shoe materials without water, wherein the specific process is basically the same as the steps of the previous embodiment, and the difference is that: after filling the degreased polyester fiber fabric into the dyeing kettle 2, placing the weighed disperse blue 56 dye into the dyeing kettle 1, wherein the dye is 0.5% of the weight of the polyester fiber fabric, namely the dye is different from the previous embodiment, and the embodiment uses the disperse blue 56 as the dye.
An embodiment of the second aspect of the present invention provides a polyester fiber, which is obtained by dyeing the polyester fiber according to any one of the embodiments of the first aspect of the present application by an anhydrous dyeing method.
An embodiment of a third aspect of the present invention provides a shoe, the shoe provided by this embodiment comprising the polyester fiber of the embodiment of the second aspect of the present application.
In embodiments according to the invention, the terms "first," "second," "third," and the like are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art according to specific circumstances.
Moreover, although operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
The above is only a preferred embodiment according to the embodiment of the present invention and is not intended to limit the embodiment according to the present invention, and various modifications and variations may be possible to the embodiment according to the present invention for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments according to the present invention should be included in the protection scope of the embodiments according to the present invention.
Claims (10)
1. The anhydrous dyeing method of the polyester fiber is characterized in that the polyester fiber is rectangular, the polyester fiber comprises an upper layer, a middle layer and a lower layer, the upper layer and the lower layer are polyester multifilament, the middle layer is polyester monofilament, and the anhydrous dyeing method of the polyester fiber comprises the following steps:
extracting oil from the polyester fiber to obtain deoiled polyester fiber;
winding the deoiling polyester fiber on a dyeing shaft, binding and fixing the deoiling polyester fiber on the dyeing shaft by using a cloth rope, and filling the dyeing shaft for fixing the deoiling polyester fiber into a vertical dyeing kettle;
dissolving a dye in supercritical carbon dioxide; wherein, the supercritical carbon dioxide is carbon dioxide with the temperature of more than or equal to 31.1 ℃ and the pressure of more than or equal to 7.39 Mpa;
introducing supercritical carbon dioxide for dissolving the dye into the vertical dyeing kettle so as to dye the deoiled polyester fiber in an anhydrous manner.
2. The method for anhydrous dyeing of polyester fiber according to claim 1, wherein,
the length and width of the polyester fiber are 20m×10m.
3. The method for anhydrous dyeing of polyester fiber according to claim 1, wherein the step of extracting the oil from the polyester fiber to obtain a deoiled polyester fiber comprises:
continuously introducing supercritical carbon dioxide into the surface of the polyester fiber to remove oil in the polyester fiber through the supercritical carbon dioxide, thereby obtaining the deoiled polyester fiber; wherein, the duration of continuous carbon dioxide in supercritical state is more than or equal to 5min and less than or equal to 25min.
4. The method for anhydrous dyeing of a polyester fiber according to claim 3, wherein before the continuous introduction of supercritical carbon dioxide to the surface of the polyester fiber, the method further comprises:
continuously introducing carbon dioxide into the space where the polyester fiber is located so as to enable the space where the polyester fiber is located to be in a vacuum state.
5. The method for anhydrous dyeing of polyester fiber according to claim 1, wherein,
the mass ratio of the dye to the polyester fiber is more than or equal to 0.1% and less than or equal to 10%; and/or
The dye is one of disperse red, disperse yellow or disperse blue.
6. The method for anhydrous dyeing of a polyester fiber according to claim 1, wherein, in the anhydrous dyeing process,
the dyeing temperature is more than or equal to 80 ℃ and less than or equal to 140 ℃;
the dyeing pressure is more than or equal to 16Mpa and less than or equal to 30Mpa;
the dyeing time is more than or equal to 30min and less than or equal to 120min.
7. The method for anhydrous dyeing of polyester fiber according to claim 1, wherein, when the dye is dissolved in supercritical carbon dioxide,
the dissolution temperature is more than or equal to 40 ℃ and less than or equal to 80 ℃;
the dissolution pressure is greater than or equal to 13Mpa and less than or equal to 22Mpa.
8. The anhydrous dyeing method for a polyester fiber according to any one of claims 1 to 7, further comprising:
separating the dye which does not carry out anhydrous dyeing on the deoiling polyester fiber from the supercritical carbon dioxide;
and recovering supercritical carbon dioxide after separating the dye.
9. A polyester fiber characterized in that it is obtained by dyeing the polyester fiber according to any one of claims 1 to 8 by an anhydrous dyeing method.
10. A shoe, wherein the material of the shoe comprises the polyester fiber according to claim 9.
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| CN202310062303.5A CN116024830A (en) | 2023-01-16 | 2023-01-16 | Polyester fiber, anhydrous dyeing method thereof and shoes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310062303.5A CN116024830A (en) | 2023-01-16 | 2023-01-16 | Polyester fiber, anhydrous dyeing method thereof and shoes |
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