CN113123146A - Waterless dyeing preparation method of temperature/ultraviolet light color-changing yarn - Google Patents
Waterless dyeing preparation method of temperature/ultraviolet light color-changing yarn Download PDFInfo
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- CN113123146A CN113123146A CN202110587443.5A CN202110587443A CN113123146A CN 113123146 A CN113123146 A CN 113123146A CN 202110587443 A CN202110587443 A CN 202110587443A CN 113123146 A CN113123146 A CN 113123146A
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- ZYMCJDAUBJFVSM-UHFFFAOYSA-N 6-methylheptyl 4-(dimethylamino)benzoate Chemical compound CC(C)CCCCCOC(=O)C1=CC=C(N(C)C)C=C1 ZYMCJDAUBJFVSM-UHFFFAOYSA-N 0.000 claims description 2
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
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- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 claims description 2
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Images
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
- D06P1/44—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
- D06P1/52—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 using compositions containing synthetic macromolecular substances
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—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 using compositions containing synthetic macromolecular substances
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
- D06P1/5257—(Meth)acrylic acid
-
- 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
- D06P1/52—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 using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
-
- 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
- D06P1/64—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 using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/645—Aliphatic, araliphatic or cycloaliphatic compounds containing amino groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- 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
- D06P1/64—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 using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65112—Compounds containing aldehyde or ketone groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- 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
-
- 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
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coloring (AREA)
Abstract
The invention relates to an anhydrous dyeing preparation method of temperature/ultraviolet light color-changing yarns, which comprises the following steps of dissolving and pulping temperature-sensitive pigments and/or photosensitive pigments, preparing a catalyst A and a catalyst B into color paste A and color paste B respectively, adding the pigment paste into the color paste A and/or the color paste B, spraying the color paste A and the color paste B onto yarns in sequence to enable dyes to be uniformly attached to the surfaces of the yarns and form a paste film on the surfaces of the yarns, and carrying out catalytic reaction on the pigments attached to the yarns through the action of ultraviolet rays emitted by an ultraviolet lamp on the sprayed and dyed yarns. The invention can solve the problems of uneven color, hardened hand feeling, no elasticity, light or dark color and non-ideal manufacturing and taking performances of the temperature/ultraviolet light color-changing yarn, and provides the preparation method of the waterless dyeing.
Description
Technical Field
The invention relates to the field of yarn preparation methods, in particular to an anhydrous dyeing preparation method of temperature/ultraviolet light color-changing yarns.
Background
The yarn is a product processed into a certain fineness by various textile fibers and is used for spinning, knitting, embroidering and the like. The color of common yarns is consistent with that of textile fiber raw materials, but the requirement on the richness of the color is higher and higher along with the improvement of the living standard of people, meanwhile, the yarn dyeing can generally obtain good color fastness and washing fastness, and can be woven with other yarns according to different design requirements, so that higher economic value is obtained, the delivery period can be shortened, and the dyed yarns are more and more applied in the modern textile industry.
At present, in daily life and work, the requirements of people on individuation and health of the people and the environment are higher and higher. The method has the advantages that certain identification functions are required in different environments, for example, one of basic identifications of the new coronavirus is the change of body temperature, and the change of the body temperature can be sensed through clothes or other ornaments. The intensity of ultraviolet rays in the environment can be judged through the change of the color of the clothes, and the clothes can be protected purposefully. And the modern life rhythm becomes faster and faster, and people have more demands on personalized and varied products. Therefore, products produced by the color-changing materials are more popular and develop rapidly in recent years. The yarn with temperature (ultraviolet) sensitivity or two effects is widely applied to the fields of textile clothing, shoe materials, automotive interior, packaging, fire fighting, transportation, building decoration, daily life, leisure and entertainment and the like.
At present, large-scale formal production related to industrialization of the yarns does not appear yet. The existing products have defects of different degrees, such as: uneven color, hardened hand feeling, no elasticity, light or dark color and the like, and the preparation and the taking performance are not ideal, thus the market demand can not be met.
The existing yarn dyeing process is complex, different dyeing processes are selected for different materials, the process flow is long, a large amount of chemical additives and water are used, a large amount of sewage is generated, and the current national policy and international popular trend are as follows: the method is environment-friendly, energy-saving and emission-reducing. Environmental protection and sewage discharge become great obstacles to the development of the printing and dyeing industry, and anhydrous dyeing becomes the direction and trend of future dyeing development.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of temperature/ultraviolet light color-changing yarns, which solves the problems of non-uniform color, hardened hand feeling, no elasticity, light or dark color and the like, and non-ideal manufacturing and service performance, and greatly reduces the emission of pollutants.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a waterless dyeing preparation method of temperature/ultraviolet light color-changing yarns, which comprises the following steps:
s00: dissolving and pulping the temperature-sensitive pigment and/or the photosensitive pigment, and then adding a proper amount of water and stirring to form pigment slurry;
s10: preparing a color paste A and a color paste B from the catalyst A and the catalyst B respectively, and adding the pigment paste into the color paste A and/or the color paste B;
s20: spraying the color paste A to the surface of the yarn uniformly, and forming a sizing film with the color paste A on the surface of the yarn to form a first yarn;
s30: forming spray of the color paste B, uniformly spraying the spray to the surface of the first yarn, and forming a sizing film with the color paste B on the surface of the first yarn to form a second yarn;
s40: and (3) carrying out catalytic reaction on the pigment attached to the second yarn under the action of ultraviolet rays emitted by an ultraviolet lamp on the second yarn after spray dyeing, so that the second yarn is bonded and solidified on the second yarn, and thus the temperature/ultraviolet ray color-changing yarn is prepared.
The invention preferably adopts the technical proposal that the catalyst A is one or more than one of alkyl aryl ketones, benzil and thioxanthone.
The invention preferably adopts the technical scheme that the catalyst B is one or more of ethyl p-dimethylaminobenzoate, isooctyl p-dimethylaminobenzoate, zinc oxide and C12-18 alkyl dimethyl benzyl ammonium chloride.
The invention preferably adopts the technical scheme that in the step S10, the blending method of the color paste A comprises the following steps: the pigment paste is prepared by sequentially adding an adhesive, a cross-linking agent, a dispersing agent, a thickening agent, a penetrating agent and a catalyst A at the speed of 100-500 r/min, fully stirring for 30-60 min and then supplementing water, wherein the blending method of the color paste B comprises the following steps: adding a dispersing agent, a catalyst B, a penetrating agent, a softening agent, a thickening agent and water into the pigment slurry, and fully stirring for 30-60 minutes at a speed of 100-500 rpm, wherein the color paste A: pigment: 0-15% of alcohol ether, 2-10% of alcohol ether, 5-20% of adhesive, 0.5-5% of cross-linking agent, 0.5-1% of dispersing agent, 1-8% of catalyst A, 1-3% of thickening agent, 1-2% of penetrating agent and the balance of water.
The invention preferably adopts the technical scheme that in the step S10, the blending method of the color paste B comprises the following steps: adding a dispersing agent, a catalyst B, a penetrating agent, a softening agent, a thickening agent and water into the pigment slurry, and fully stirring for 30-60 minutes at a speed of 100-500 rpm, wherein the mass percentages of the raw materials are (the sum of the mass percentages of all the components is 100%):
color paste B: 1-3% of dispersing agent, 0.1-3% of catalyst B, 1-3% of thickening agent, 3-5% of softening agent, 1-2% of penetrating agent and the balance of water.
The preferable technical scheme of the invention is that in the step S20, the yarn is subjected to pre-wetting treatment and then is subjected to spray-dyeing, wherein the temperature of the pre-wetting process is 20-40 ℃, and the relative humidity is 80-100%.
The invention preferably adopts the technical scheme that in the steps of S20 and S30, the spraying pressure is set to be 1.5-2 MPa.
The preferred technical solution of the present invention is that in step S40, the second yarn is pre-baked by ultraviolet irradiation and infrared ray.
The preferable technical scheme of the invention is that in the step of S20, the yarn is one or more of cotton, viscose, terylene, acrylic, nylon, wool, silk, flax and ramie yarn.
The preferable technical scheme of the invention is that in the step S40, the temperature/ultraviolet photochromic yarn is wound on the rubber tube, sealed and stacked for 12-16 hours, and then placed in a radio frequency dryer for drying.
The invention has the beneficial effects that:
the invention adopts an anhydrous dyeing preparation method of temperature/ultraviolet light color-changing yarns, which comprises the steps of respectively adding a catalyst A and a catalyst B into different color pastes, spraying the color paste A and the color paste B onto yarns to form a paste film, and curing under the action of ultraviolet rays, so that raw materials on the yarns react and catalyze reaction, and an adhesive reacts and is cured on the yarns. The temperature/ultraviolet light color-changing yarn produced in the way has the advantages of uniform color, soft hand feeling, good elasticity, bright color, ideal manufacturing and wearability, easy popularization and capability of meeting market demands.
In addition, the preparation method can be used for continuously producing the temperature change/light change yarns in a large scale, the energy consumption is greatly reduced, the water is reduced by about 98 percent, the steam is reduced by 100 percent, and the emission of pollutants can be greatly and effectively reduced in the production process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a method for preparing a temperature/ultraviolet light color-changing yarn by waterless dyeing according to the present invention;
fig. 2 is a process flow diagram of an embodiment of a method for preparing a temperature/ultraviolet light color-changing yarn by waterless dyeing according to the present invention.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. Unless otherwise indicated, the starting reagents employed in the examples of the present invention are those conventionally purchased and are conventional materials well known in the industry.
The raw materials used in the respective examples and comparative examples:
alcohol ether solvents:
the model is as follows: propylene glycol methyl ether manufacturer: mingwei;
polyacrylate adhesive:
the model is as follows: HD705A manufacturer: fine chemical engineering of Han Ke;
modified polyurethane crosslinking agent:
the model is as follows: UN-557 manufacturer: yon chemical industry;
chelating dispersant:
the model is as follows: chelating dispersants, manufacturer: a combination textile auxiliary;
penetrant:
the model is as follows: fast penetrant manufacturers: yutao;
catalyst A:
the model is as follows: benzil manufacturers: chemical lake northeast Cao;
catalyst B:
the model is as follows: ethyl p-dimethylaminobenzoate manufacturer: chemical engineering of Hubei Jiu Fenglong;
polyacrylic acid thickener:
the model is as follows: manufacturer DH-1185: dinghe;
thickening agent:
the model is as follows: the DH-210 manufacturer: ding He.
Example 1
A waterless dyeing preparation method of temperature-sensitive color-changing yarns comprises the following steps:
1. preparation of slurry
Weighing 10% of temperature-sensitive pigment, adding 18% of alcohol ether solvent, dissolving and pulping, adding 22% of deionized water, and stirring for 10 minutes to obtain pigment slurry;
regulating the rotating speed to 300 revolutions per minute, and sequentially adding: 13 percent of polyacrylate adhesive, 3 percent of modified polyurethane crosslinking agent, 0.5 percent of chelating dispersant, 1 percent of penetrating agent, 6.5 percent of catalyst A, 1.5 percent of polyacrylic acid thickening agent, and then 24.5 percent of deionized water is added, and the mixture is fully stirred for 30 minutes, and finally pigment slurry is added and mixed for 30 minutes to prepare color paste A;
adjusting the rotating speed to 300 revolutions per minute, sequentially adding 0.5 percent of chelating dispersant, 1 percent of penetrating agent, 1 percent of catalyst B, 3 percent of thickening agent and 94.5 percent of deionized water, adjusting the rotating speed to 300 revolutions per minute, and fully stirring for 30 minutes to prepare color paste B;
2. pretreatment: prewetting cotton yarns in a steam box at 25 ℃ and 85-100% of humidity;
3. spraying: spraying color paste A on the cotton yarn through a nozzle A (spraying pressure of 2MPa), wherein the color paste A is fully and uniformly distributed on the surface of the yarn and permeates into the yarn, and spraying color paste B on the cotton yarn through a nozzle B (spraying pressure of 2MPa), and the color paste B is fully and uniformly distributed on the surface of the yarn and permeates into the yarn; adjusting the speed of the yarn to be 15 m/min;
4. reacting and catalyzing the sprayed cotton yarn under the action of ultraviolet rays; simultaneously, pre-drying by infrared rays to remove partial moisture on the yarn;
5. leading out the reacted yarn from the equipment, winding the yarn on a rubber tube, sealing and stacking for 15 hours;
6. and taking out the stacked yarns, placing the yarns in a radio frequency dryer, drying and packaging to obtain the temperature-sensitive yarns.
Example 2
A waterless dyeing preparation method of temperature-sensitive photochromic yarns comprises the following steps:
1. preparation of slurry
Weighing 7% of temperature-sensitive pigment and 7% of photosensitive pigment respectively, adding 20% of alcohol ether solvent, dissolving and pulping, adding 16% of deionized water, and stirring for 10 minutes to obtain pigment slurry;
regulating the rotating speed to 300 revolutions per minute, and sequentially adding: 18 percent of polyacrylate adhesive, 5 percent of modified polyurethane crosslinking agent, 0.5 percent of chelating dispersant, 1 percent of penetrating agent, 8 percent of catalyst A, 1.5 percent of polyacrylic acid thickener, and then 16 percent of deionized water is added, and the mixture is fully stirred for 30 minutes, and finally pigment slurry is added and mixed for 30 minutes to prepare color paste A;
regulating the rotating speed to 300 revolutions per minute, sequentially adding 0.5 percent of chelating dispersant, 1 percent of penetrating agent, 3 percent of catalyst B, 3 percent of thickening agent and 92.5 percent of deionized water, regulating the rotating speed to 300 revolutions per minute, and fully stirring for 30 minutes to prepare color paste B;
2. pretreatment: pre-wetting polyester yarns in a steam box at the temperature of 25 ℃ and the humidity of 85-100%;
3. spraying: spraying color paste A onto the polyester yarn through a nozzle A (spraying pressure of 2MPa), wherein the color paste A is fully and uniformly distributed on the surface of the yarn and permeates into the yarn, and spraying color paste B onto the cotton yarn through a nozzle B (spraying pressure of 2MPa), and the color paste B is fully and uniformly distributed on the surface of the yarn and permeates into the yarn; adjusting the speed of the yarn to 25 m/min;
4. reacting and catalyzing the sprayed polyester yarns under the action of ultraviolet rays; simultaneously, pre-drying by infrared rays to remove partial moisture on the yarn;
5. leading out the reacted yarn from the equipment, winding the yarn on a rubber tube, sealing and stacking for 12 hours;
6. and taking out the stacked yarns, placing the yarns in a radio frequency dryer, drying and packaging to obtain the temperature-sensitive photosensitive composite yarns.
Example 3
A method for preparing photochromic yarn by anhydrous dyeing comprises the following steps:
1. preparation of slurry
Weighing 6% of photosensitive pigment, adding 11% of alcohol ether solvent, dissolving and pulping, adding 33% of deionized water, and stirring for 10 minutes to obtain pigment slurry;
regulating the rotating speed to 300 revolutions per minute, and sequentially adding: 10% of polyacrylate adhesive, 1% of modified polyurethane crosslinking agent, 0.5% of chelating dispersant, 0.5% of penetrating agent, 4.5% of catalyst A, 1.8% of polyacrylic acid thickening agent, and then adding 31.7% of deionized water, fully stirring for 30 minutes, finally adding pigment slurry, and mixing for 30 minutes to prepare color paste A;
regulating the rotating speed to 300 revolutions per minute, sequentially adding 0.5 percent of chelating dispersant, 0.5 percent of penetrating agent, 0.7 percent of catalyst B, 2.2 percent of thickening agent and 96.1 percent of deionized water, regulating the rotating speed to 300 revolutions per minute, and fully stirring for 30 minutes to prepare color paste B;
2. pretreatment: prewetting the viscose yarns in a steam box at 25 ℃ and 85-100% of humidity;
3. spraying: spraying color paste A onto the viscose yarns through a nozzle A (spraying pressure of 2MPa), wherein the color paste A is fully and uniformly distributed on the surfaces of the yarns and permeates into the yarns, and spraying color paste B onto the viscose yarns through a nozzle B (spraying pressure of 2MPa), and the color paste B is fully and uniformly distributed on the surfaces of the yarns and permeates into the yarns; adjusting the speed of the yarn to be 20 m/min;
4. reacting and catalyzing the sprayed viscose yarns under the action of ultraviolet rays; simultaneously, pre-drying by infrared rays to remove partial moisture on the yarn;
5. leading out the reacted yarn from the equipment, winding the yarn on a rubber tube, sealing and stacking for 15 hours;
and taking out the stacked yarns, placing the yarns in a radio frequency dryer, drying and packaging to obtain the photosensitive yarns.
Comparative example 1
A method for preparing photochromic yarn by anhydrous dyeing comprises the following steps:
1. preparation of slurry
Weighing 6% of photosensitive pigment, adding 11% of alcohol ether solvent, dissolving and pulping, adding 33% of deionized water, and stirring for 10 minutes to obtain pigment slurry;
regulating the rotating speed to 300 revolutions per minute, and sequentially adding: 10% of polyacrylate adhesive, 1% of modified polyurethane crosslinking agent, 0.5% of chelating dispersant, 0.5% of penetrating agent, 4.5% of catalyst A, 1.8% of polyacrylic acid thickening agent, and then adding 31.7% of deionized water, fully stirring for 30 minutes, finally adding pigment slurry, and mixing for 30 minutes to prepare color paste A;
regulating the rotating speed to 300 revolutions per minute, sequentially adding 0.5 percent of chelating dispersant, 0.5 percent of penetrating agent, 0.7 percent of catalyst B, 2.2 percent of thickening agent and 96.1 percent of deionized water, regulating the rotating speed to 300 revolutions per minute, and fully stirring for 30 minutes to prepare color paste B;
2. spraying: spraying color paste A onto the viscose yarns through a nozzle A (spraying pressure of 2MPa), wherein the color paste A is fully and uniformly distributed on the surfaces of the yarns and permeates into the yarns, and spraying color paste B onto the viscose yarns through a nozzle B (spraying pressure of 2MPa), and the color paste B is fully and uniformly distributed on the surfaces of the yarns and permeates into the yarns; adjusting the speed of the yarn to be 20 m/min;
3. reacting and catalyzing the sprayed viscose yarns under the action of ultraviolet rays; simultaneously, pre-drying by infrared rays to remove partial moisture on the yarn;
4. leading out the reacted yarn from the equipment, winding the yarn on a rubber tube, sealing and stacking for 15 hours;
and taking out the stacked yarns, placing the yarns in a radio frequency dryer, drying and packaging to obtain the photosensitive yarns.
The temperature-sensitive/photochromic yarns prepared in examples 1-3 and comparative example 1 were tested according to GB/T18401, and the test results are as follows:
table one:
as known from the table above, the quality of the temperature-sensitive photochromic yarn prepared by the invention meets the requirements of national standard GB/T18401.
Table two:
| color uniformity | Hand feeling | Color change | Strip for strip | |
| Example 1 | Uniformity | Softness | Quickly taking away | Good taste |
| Example 2 | Uniformity | Softness | Quickly taking away | Good taste |
| Example 3 | Uniformity | Softness | Quickly taking away | Good taste |
| Comparative example 1 | Has depth and white point | Is slightly hard | Quickly taking away | Good taste |
Comparing example 3 with comparative example 1, it can be seen that the prewetting treatment of the yarn is beneficial to further improving the dyeing uniformity and hand feeling of the finished product.
Table three: (consumption per ton yarn)
| Water (ton) | Steam (ton) | Drapability and elasticity of yarn | Vividness of color | Color fastness to sunlight | |
| Conventional process | 100 | 3`4 | In general | In general | 1 |
| New process | 2 | 0 | Good taste | Good taste | 3 |
The comparison can obtain that: due to the change of the production process, the water consumption is greatly reduced by 98 percent, and the steam is reduced by 100 percent. The emission of pollutants is greatly reduced, and the benefit is extremely obvious. And because the process of the novel invention is short, the yarn does not undergo long-time and violent impact and friction of the dye liquor, and the original drapability and elasticity of the yarn can be well maintained. And the conventional process uses a modification process, so that the color brilliance and the light fastness of the pigment are greatly influenced.
The temperature-sensitive photochromic yarn is produced continuously in large scale, the water consumption is reduced by about 98 percent, the steam is reduced by 100 percent, and the emission of pollutants is greatly reduced. The yarn produced by the invention has soft hand feeling, high elasticity and bright color.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (10)
1. A waterless dyeing preparation method of temperature/ultraviolet light color-changing yarns is characterized by comprising the following steps:
s00: dissolving and pulping the temperature-sensitive pigment and/or the photosensitive pigment, and then adding a proper amount of water and stirring to form pigment slurry;
s10: preparing a catalyst A and a catalyst B into color paste A and color paste B respectively, and adding the pigment paste into the color paste A and/or the color paste B;
s20: spraying the color paste A to the surface of the yarn uniformly, and forming a sizing film with the color paste A on the surface of the yarn to form a first yarn;
s30: spraying the color paste B to the surface of the first yarn uniformly, and forming a sizing film with the color paste B on the surface of the first yarn to form a second yarn;
s40: and (3) carrying out catalytic reaction on a size film attached to the second yarns under the action of ultraviolet rays emitted by an ultraviolet lamp on the second yarns after spray-dyeing, so that the pigment is bonded and solidified on the second yarns, and thus the temperature/ultraviolet ray color-changing yarns are prepared.
2. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
the catalyst A is one or more of alkyl aryl ketones, benzil and thioxanthone.
3. The method for preparing the temperature/ultraviolet photochromic yarn according to claim 1, wherein the method comprises the following steps:
the catalyst B is one or more of ethyl p-dimethylaminobenzoate, isooctyl p-dimethylaminobenzoate, zinc oxide and C12-18 alkyl dimethyl benzyl ammonium chloride.
4. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in the step S10, the blending method of the color paste A comprises the following steps: the pigment slurry is prepared by sequentially adding an adhesive, a cross-linking agent, a dispersing agent, a thickening agent, a penetrating agent and a catalyst A at the speed of 100-500 r/min, fully stirring for 30-60 min and then supplementing water;
the mass percentages of the raw materials are (the sum of the mass percentages of all the components is 100%):
color paste A: pigment: 0-15% of alcohol ether, 2-10% of alcohol ether, 5-20% of adhesive, 0.5-5% of cross-linking agent, 0.5-1% of dispersing agent, 1-8% of catalyst A, 1-3% of thickening agent, 1-2% of penetrating agent and the balance of water.
5. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in the step S10, the blending method of the color paste B is as follows: adding a dispersing agent, a catalyst B, a penetrating agent, a softening agent, a thickening agent and water into the pigment slurry, and fully stirring for 30-60 minutes at a speed of 100-500 revolutions per minute;
the mass percentages of the raw materials are (the sum of the mass percentages of all the components is 100%):
color paste B: 1-3% of dispersing agent, 0.1-3% of catalyst B, 1-3% of thickening agent, 3-5% of softening agent, 1-2% of penetrating agent and the balance of water.
6. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in the step S20, the yarn is subjected to pre-wetting treatment and then spray-dyed, wherein the temperature of the pre-wetting process is 20-40 ℃, and the relative humidity is 80-100%.
7. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in the steps S20 and S30, the spraying pressure is set to 1.5 to 2 MPa.
8. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in step S40, the second yarn is pre-baked by uv irradiation and infrared rays.
9. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in step S20, the yarn is one or more of cotton, viscose, polyester, acrylic, nylon, wool, silk, flax, and ramie yarn.
10. The method for preparing the waterless dyeing of the temperature/ultraviolet photochromic yarn as claimed in claim 1, wherein the method comprises the following steps:
in the step S40, the temperature/ultraviolet photochromic yarn is wound on a rubber tube, sealed and stacked for 12-16 hours, and then placed in a radio frequency dryer for drying.
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