CN114808472A - Light-resistant thermochromic fabric and preparation method thereof - Google Patents
Light-resistant thermochromic fabric and preparation method thereof Download PDFInfo
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- CN114808472A CN114808472A CN202210537506.0A CN202210537506A CN114808472A CN 114808472 A CN114808472 A CN 114808472A CN 202210537506 A CN202210537506 A CN 202210537506A CN 114808472 A CN114808472 A CN 114808472A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- 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)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a light-resistant thermochromic fabric and a preparation method thereof, belonging to the technical field of material science. The method for preparing the light-resistant thermochromic fabric comprises the following steps of: (1) dissolving an ultraviolet absorption monomer and a structural monomer in a solvent, and uniformly mixing; heating to 60-85 ℃, dropwise adding an initiator, keeping the reaction temperature for reacting for 3-12h, extracting after the reaction is finished, and drying to obtain an ultraviolet absorption polymer; (2) preparing an ultraviolet absorbing polymer solution; and then coating the ultraviolet absorption polymer solution on the surface of the thermochromic fabric, and drying to obtain the light-resistant thermochromic fabric. The light-resistant thermochromic fabric disclosed by the invention has the advantages of slow color fading, good color retention and high rubbing fastness under illumination, can meet the use requirements of people on the thermochromic fabric, and has wide application prospect in the field of outdoor thermochromic textiles.
Description
Technical Field
The invention relates to a light-resistant thermochromic fabric and a preparation method thereof, belonging to the technical field of material science.
Background
The thermochromic dye is a material which can change color in response to the ambient temperature, and can achieve the purpose of converting microscopic temperature into macroscopic color change. At present, thermochromic dyes have wide application prospects in the fields of textiles, intelligent buildings, anti-counterfeiting packages, intelligent medical treatment, military industry and the like.
Thermochromic dyes are classified into inorganic, organic and liquid crystal dyes according to the components of the materials, the inorganic thermochromic materials are low in cost, but the thermochromic materials are narrow in color change range, too high in color change temperature and low in precision, and the application is limited to a certain extent; the liquid crystal has good thermal discoloration and light resistance stability, but has high cost and poor stability to chemical substances; the organic thermochromic dye is rich in color, sensitive to temperature induction and controllable and adjustable in color change temperature, so that the organic thermochromic dye is more suitable for thermochromic textiles. At present, the most widely applied organic thermochromic dye is fluorane dye, and a full-color spectrum thermochromic system of black, orange, red, green and the like can be obtained by changing the structure of the fluorane dye.
Fluoran-based color change dyes need to be used in combination with an electron donor developer and a solvent, so the system is generally microencapsulated before application. For example: in patent CN110964498A, Wangbaohua mixes fluoran dye with bisphenol A and 1-hydroxy-2 phenyl naphthoate, adds anti-settling agent, and adds wall material prepolymer after dispersion to react to prepare thermochromic microcapsules; in patent CN104910714A, dawnin et al, mix the microcapsules made of fluoran dye with adhesive and spacing agent to obtain thermochromic paint. The color-changing microcapsules prepared by the patent have good color-changing response, reversible color-changing performance and the like, but the color-changing microcapsules have poor light fatigue resistance, and particularly when the color-changing microcapsules are applied outdoors, the microcapsules have obvious color-changing phenomenon in a short time. The main reason is that fluorane dyes are not structurally stable enough and gradually lose their color-changing ability under the action of light and heat. In summary, the color-changing system using fluoran dye as a color former cannot meet the use requirements of people in the aspect of sunlight resistance.
At present, methods for improving the sun-proof performance of fluoran dyes mainly improve the ultraviolet-proof performance of fluoran dyes, such as: groups with ultraviolet absorption function are grafted on the color-changing dye, but the method has high technical requirement and high cost; the method for finishing the color-changing textile by adopting the commercial ultraviolet absorbent is adopted, but the commercial ultraviolet absorbent is mostly a small molecular material, so that the problem of outward migration in use exists, and the protection life is greatly influenced. Therefore, it is an urgent problem to improve the sun-proof performance of fluoran color-changing dyes and realize long-term outdoor use of fluoran color-changing textiles.
Disclosure of Invention
[ problem ] to
The color-changing system using the fluoran dye as a color former can not meet the use requirements of people in the aspect of sunlight resistance.
[ solution ]
In order to solve the problems, the invention adopts specific ultraviolet absorbent monomers and structural monomers, regulates the feed ratio of the monomers, carries out solution polymerization according to a certain method to prepare a polymer with excellent ultraviolet absorption performance, and then coats the polymer on the thermochromic fabric by adopting a solvent volatilization method to prepare the light-resistant thermochromic fabric. Under the irradiation of sunlight or ultraviolet light, the ultraviolet absorption coating can effectively absorb the ultraviolet light and protect the thermochromic dye under the coating, so that the thermochromic fabric shows good color change performance and meets the sun-proof requirement.
The first object of the present invention is to provide a method for preparing a light-resistant thermochromic fabric, comprising the steps of:
(1) preparation of ultraviolet absorbing polymer:
dissolving an ultraviolet absorption monomer and a structural monomer in a solvent, and uniformly mixing; heating to 60-85 ℃, dropwise adding an initiator, keeping the reaction temperature for reacting for 3-12h, extracting after the reaction is finished, and drying to obtain an ultraviolet absorption polymer; wherein the ultraviolet absorption monomer comprises one or more of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-hydroxy-4-allyloxybenzophenone, 2-hydroxy-4-methacrylate, 2-hydroxy-4-acrylate benzophenone and 2-hydroxy-4- (3-methacrylate-2-hydroxypropoxy) benzophenone; the structural monomer comprises one or more of methyl methacrylate, styrene, ethyl methacrylate, butyl methacrylate, vinyl acetate, acrylonitrile, acrylamide, isoprene, methyl vinyl ether and dicyclopentadiene;
(2) preparing the light-resistant thermochromic fabric:
preparing the ultraviolet absorption polymer in the step (1) into an ultraviolet absorption polymer solution; and then coating the ultraviolet absorption polymer solution on the surface of the thermochromic fabric, and drying to obtain the light-resistant thermochromic fabric.
In one embodiment of the present invention, the mass ratio of the ultraviolet absorbing monomer and the structural monomer in step (1) is 0 to 1: 1, but not 0.
In one embodiment of the present invention, the solvent in step (1) is one or more of toluene, tetrahydrofuran, and organic ether compounds.
In one embodiment of the present invention, the mass ratio of the solvent and the polymerized monomers (uv-absorbing monomer and structural monomer) in step (1) is 1 to 2: 1.
in one embodiment of the present invention, the initiator in step (1) comprises one or more of dibenzoyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, lauroyl peroxide, dicumyl peroxide and di-tert-butyl peroxide.
In one embodiment of the present invention, the extraction in step (1) is performed by using methanol, ethanol, or the like.
In one embodiment of the present invention, the amount of the initiator used in step (1) is 0.5 to 2% by mass of the polymerized monomers (the ultraviolet absorbing monomer and the structural monomer).
In one embodiment of the present invention, the preparation method of the thermochromic fabric in step (2) comprises the following steps:
uniformly mixing thermochromic dye, printing adhesive, water and thickener, and stirring until the mixture is viscous to obtain printing paste; uniformly coating the printing paste on the fabric, and drying to obtain the thermochromic fabric;
wherein the thermochromic dye is fluoran color-changing dye, the color-changing temperature is 15-50 ℃, and the color is three primary colors of yellow, red and blue; the mass ratio of the thermochromic dye to the printing adhesive to the water to the thickening agent is 10: 15: 22: 3; the fabric comprises cotton fabric, polyester fabric, nylon fabric and the like.
In an embodiment of the present invention, the solvent of the ultraviolet absorbing polymer solution in step (2) is one or more selected from dichloromethane, dichloroethane, chloroform, tetrahydrofuran, acetone, methyl ethyl ketone, benzene, chlorobenzene, and ethyl acetate alkene.
In one embodiment of the present invention, the concentration of the UV-absorbing polymer solution in step (2) is 0.05-1 g/mL.
In one embodiment of the present invention, the coating in step (2) is applied in an amount of 0.01 to 0.05mL/cm 2 。
In one embodiment of the present invention, the drying in step (2) may be performed by volatilizing a solvent of the uv-absorbing polymer solution.
The second object of the invention is a light-resistant thermochromic fabric prepared by the method.
The third purpose of the invention is to apply the light-resistant thermochromic fabric in the fields of textile, intelligent building, anti-counterfeiting package, intelligent medical treatment, military industry and the like.
[ advantageous effects ]
(1) The invention adopts specific ultraviolet absorbent monomers and structural monomers, regulates the feed ratio of the monomers and carries out solution polymerization according to a certain method to prepare the polymer with excellent ultraviolet absorption performance; the coating is used as a protective coating of the thermochromic fabric, has good ultraviolet absorption performance and high transparency, and does not influence the color and the color change performance of the thermochromic fabric while improving the light resistance of the thermochromic fabric.
(2) The light-resistant thermochromic fabric belongs to ultraviolet-protected thermochromic fabrics, is slow in color fading under illumination, good in color retention and high in rubbing fastness, can meet the use requirements of people on the thermochromic fabrics, and has a wide application prospect in the field of outdoor thermochromic textiles.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of better illustrating the invention and is not intended to limit the invention thereto.
The test method comprises the following steps:
color fastness: the rubbing fastness was assessed using a grey sample card according to the test of the national Standard GB/29865-2013 rubbing fastness test for textile color fastness.
Apparent color depth value: any 8 points on the surface of the dyed fabric were measured and averaged using a Datacolor model 650 bench spectrophotometer to measure the K/S value of the dyed fabric.
Fading rate: the method comprises the following steps of (1) manually simulating sun aging of the color-changing fabric by using a sun climate tester, and calculating according to the following formula (1) by combining K/S values of the fabrics with different sun time:
in the formula: K/S 0 Is the K/S value, K/S, of the fabric at the beginning t Is the K/S value of the fabric after t hours.
Testing of color change response time and times: placing the color-changing fabric on a constant temperature table, heating the fabric to the color-changing temperature of the fabric from 10 ℃ lower than the color-changing temperature of the fabric, and recording the time from the temperature of the constant temperature table to the color-changing temperature to the time when the fabric is completely changed in color as the color-changing response time; the temperature was then lowered back to 10 ℃ below the fabric discoloration temperature, which was 1 discoloration process.
Example 1
A method for preparing a light-resistant thermochromic fabric, comprising the steps of:
(1) preparation of ultraviolet absorbing polymer:
24.924g of methyl methacrylate and 1.876g of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate (the mass ratio of the two is 93: 7) are dissolved in 40g of toluene, 0.32g of benzoyl peroxide is slowly added dropwise, then the temperature is increased to 80 ℃, the reaction is carried out for 5 hours, the reaction product is extracted by methanol, and the ultraviolet absorption polymer is obtained after drying;
(2) preparing thermochromic fabric:
uniformly mixing 10G of blue thermochromic dye (fluoran dye, the color change temperature is 30 ℃), 15G of printing adhesive DM-5128, 22G of water and 3G of thickener DM-5221G, and stirring until the mixture is viscous to obtain printing paste; 8g of printing paste is uniformly coated to 100cm 2 Baking the cotton fabric for 10 minutes at 120 ℃ to obtain thermochromic fabric;
(3) preparing the light-resistant thermochromic fabric:
dissolving 0.4g of ultraviolet absorbing polymer in 2mL of dichloromethane to obtain an ultraviolet absorbing polymer solution; 2mL of the UV-absorbing polymer solution was then applied at 100cm 2 And (3) obtaining the light-resistant thermochromic fabric after the dichloromethane volatilizes.
Example 2
Adjusting example 1 step (1) 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate to 2-hydroxy-4-allyloxybenzophenone; the light-resistant thermochromic fabric is obtained by adjusting the blue thermochromic dye in the step (2) of example 1 to be a red thermochromic dye (fluoran dye, the color change temperature is 30 ℃), and keeping the same with the step (2) of example 1.
Example 3
Adjusting the 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate in step (1) of example 1 to 2-hydroxy-4-propenylbenzophenone; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Example 4
The amount of the polymerization monomer used in step (1) of example 1 was adjusted to: 25.996g of methyl methacrylate and 0.804g of 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate (the mass ratio of the two is 97: 3); the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Example 5
Keeping step (1) in example 1 unchanged, the amount of the ultraviolet absorbing polymer used in step (3) was adjusted to 0.2 g; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Example 6
Keeping step (1) in example 1 unchanged, the amount of the ultraviolet absorbing polymer used in step (3) was adjusted to 0.1 g; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Example 7
Adjusting dichloromethane to dichloroethane in step (3) of example 1; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Comparative example 1
The thermochromic fabric prepared in step (2) of example 1 was not subjected to treatment with an ultraviolet polymer.
Comparative example 2
Adjusting the amount of the polymerization monomer in step (1) of example 1 to 26.8g only of methyl methacrylate; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
Comparative example 3
Adjusting the polymer in step (3) of example 1 to 0.4g of 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate; the rest of the process was kept the same as example 1 to obtain the light-fast thermochromic fabric.
The fabrics obtained in the examples and comparative examples were subjected to performance tests, the test results being as follows:
table 1 artificial sun aging test of fabrics
| Example (b) | K/S before solarization | K/S after 10 hours of solarization | Fading rate after 10 hours of sun exposure |
| Example 1 | 4.81 | 3.46 | 28％ |
| Example 2 | 4.49 | 2.88 | 36％ |
| Example 3 | 4.40 | 2.60 | 41％ |
| Example 4 | 5.01 | 2.15 | 57％ |
| Example 5 | 5.22 | 3.38 | 35％ |
| Example 6 | 5.28 | 2.76 | 48％ |
| Example 7 | 4.69 | 3.29 | 30％ |
| Comparative example 1 | 5.28 | 1.86 | 65％ |
| Comparative example 2 | 4.80 | 0.77 | 84％ |
| Comparative example 3 | 4.50 | 3.60 | 20％ |
Table 2 other performance testing of the fabrics
| Example (b) | Fastness to dry rubbing | Fastness to wet rubbing | Number of times of color change | Color change response time after sun exposure |
| Examples1 | 5 | 5 | ＞300 | 11-13S |
| Example 2 | 5 | 5 | ＞300 | 11-13S |
| Example 3 | 5 | 5 | ＞300 | 11-14S |
| Example 4 | 4 | 5 | ＞300 | 11-13S |
| Example 5 | 5 | 5 | ＞300 | 11-13S |
| Example 6 | 4-5 | 4-5 | ＞300 | 10-12S |
| Example 7 | 4-5 | 4 | ＞300 | 8-12S |
| Comparative example 1 | 4 | 3 | ＞300 | 8-12S |
| Comparative example 2 | 5 | 5 | ＞300 | 11-12S |
| Comparative example 3 | 3 | 2-3 | ＞300 | 8-12S |
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for preparing a light-resistant thermochromic fabric is characterized by comprising the following steps of:
(1) preparation of ultraviolet absorbing polymer:
dissolving an ultraviolet absorption monomer and a structural monomer in a solvent, and uniformly mixing; heating to 60-85 ℃, dropwise adding an initiator, keeping the reaction temperature for reacting for 3-12h, extracting after the reaction is finished, and drying to obtain an ultraviolet absorption polymer; wherein the ultraviolet absorption monomer comprises one or more of 2- [3- (2H-benzotriazole-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate, 2-hydroxy-4-allyloxybenzophenone, 2-hydroxy-4-methacrylate, 2-hydroxy-4-acrylate benzophenone and 2-hydroxy-4- (3-methacrylate-2-hydroxypropoxy) benzophenone; the structural monomer comprises one or more of methyl methacrylate, styrene, ethyl methacrylate, butyl methacrylate, vinyl acetate, acrylonitrile, acrylamide, isoprene, methyl vinyl ether and dicyclopentadiene;
(2) preparing the light-resistant thermochromic fabric:
preparing the ultraviolet absorption polymer in the step (1) into an ultraviolet absorption polymer solution; and then coating the ultraviolet absorption polymer solution on the surface of the thermochromic fabric, and drying to obtain the light-resistant thermochromic fabric.
2. The method according to claim 1, wherein the mass ratio of the ultraviolet absorbing monomer and the structural monomer in the step (1) is 0-1: 1, but not 0.
3. The method according to claim 1, wherein the concentration of the ultraviolet absorbent polymer solution of step (2) is 0.05 to 1 g/mL.
4. The method according to claim 1, wherein the solvent of the ultraviolet absorbing polymer solution in step (2) is one or more selected from dichloromethane, dichloroethane, chloroform, tetrahydrofuran, acetone, methyl ethyl ketone, benzene, chlorobenzene, and ethyl acetate alkene.
5. The method according to claim 1, wherein the solvent in step (1) is one or more of toluene, tetrahydrofuran, and organic ether compounds.
6. The method of claim 1, wherein the initiator in step (1) comprises one or more of dibenzoyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, lauroyl peroxide, dicumyl peroxide and di-tert-butyl peroxide.
7. The method of claim 1, wherein the coating of step (2) is applied in an amount of 0.01 to 0.05mL/cm 2 。
8. The method according to claim 1, wherein the preparation method of the thermochromic fabric in step (2) comprises the following steps:
uniformly mixing thermochromic dye, printing adhesive, water and thickener, and stirring until the mixture is viscous to obtain printing paste; and (3) uniformly coating the printing paste on the fabric, and drying to obtain the thermochromic fabric.
9. A light-fast thermochromic fabric prepared by the method of any of claims 1-8.
10. The light-resistant thermochromic fabric of claim 9, which is used in the fields of textiles, intelligent buildings, anti-counterfeiting packages, intelligent medical treatment, military industry and the like.
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| CN115651115A (en) * | 2022-09-27 | 2023-01-31 | 吉首大学 | Weather-resistant antibacterial acrylic emulsion and preparation method and application thereof |
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| CN103031712A (en) * | 2012-12-21 | 2013-04-10 | 江南大学 | Method for improving color fastness to light of fabric dyed by active dye |
| CN103225212A (en) * | 2013-05-08 | 2013-07-31 | 福建众和股份有限公司 | Temperature-sensitive color-changing paint dyeing technology of textile fabrics |
| CN106866871A (en) * | 2017-01-17 | 2017-06-20 | 常州大学 | One kind has ultraviolet protection function palyacrylate binder and preparation method thereof |
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| CN112625180A (en) * | 2020-12-07 | 2021-04-09 | 江南大学 | Uvioresistant microsphere, preparation method and application |
| CN113832729A (en) * | 2021-09-15 | 2021-12-24 | 苏州同构科技有限公司 | Washable ultraviolet absorbent and preparation method thereof |
| CN113737542A (en) * | 2021-09-18 | 2021-12-03 | 江苏聚杰微纤科技集团股份有限公司 | High-thermal-conductivity quick-response type thermochromic fabric and preparation method thereof |
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| CN115651115A (en) * | 2022-09-27 | 2023-01-31 | 吉首大学 | Weather-resistant antibacterial acrylic emulsion and preparation method and application thereof |
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