CN117304757A - Preparation method of intelligent color-changing functional coating based on UV adhesive - Google Patents
Preparation method of intelligent color-changing functional coating based on UV adhesive Download PDFInfo
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- CN117304757A CN117304757A CN202311291900.1A CN202311291900A CN117304757A CN 117304757 A CN117304757 A CN 117304757A CN 202311291900 A CN202311291900 A CN 202311291900A CN 117304757 A CN117304757 A CN 117304757A
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- 238000000576 coating method Methods 0.000 title claims abstract description 117
- 239000011248 coating agent Substances 0.000 title claims abstract description 113
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The application relates to a preparation method of an intelligent color-changing functional coating based on UV glue, which comprises the following steps: s2, pre-curing the UV adhesive coating containing the photochromic molecules under ultraviolet light to form a semi-solid coating with the curing degree of 30%, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 0.1-1W/cm 2 The curing time is 1-60 s; s3, performing post-curing treatment on the semi-cured coating under ultraviolet light to form an intelligent color-changing functional coating, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 2-10W/cm 2 The curing time is 1-10 min. The preparation method provided by the invention can improve the photochromic efficiency and stability of the functional coating, enhance the response sensitivity of the functional coating to ultraviolet rays, expand the color change speed and range, and improve the flatness and uniformity of the functional coatingUniformity.
Description
Technical Field
The invention relates to the technical field of photo-curing, in particular to a preparation method of an intelligent color-changing functional coating based on UV glue.
Background
The functional coating composite material is a material formed by converting and compounding one or more materials (such as pressure sensitive adhesive, conductive coating, hard coating, anti-reflection coating, high barrier coating, release coating material and the like) with different types of base materials (such as PET film, PI film, PVC film and the like) in a manner of precise coating, printing, vacuum sputtering, sintering and the like. The functional coating composite material has wide application in the fields of consumer electronics, automobile electronics, new energy sources and the like, and has excellent optical performance, conductive performance, heat dissipation performance and the like.
Photochromic molecules are a class of molecules that undergo reversible or irreversible color change under illumination, and have become important materials for advanced photonic applications, including fluorescent imaging, smart lenses, optical data storage, and anti-counterfeiting. Research in this area is currently focused on developing new photochromic molecules and controlling the photochromic behavior of these materials to meet the criteria of different optoelectronic applications.
At present, the intelligent color-changing functional coating based on the UV glue is mainly formed by mixing photochromic molecules with the UV glue, coating the mixture on a substrate and then directly curing the mixture, and has the advantages of simple preparation process, low cost, large-area preparation and the like. However, this approach has mainly the following drawbacks:
1) The interaction or interference between the photochromic molecules and the UV glue can exist, so that the photochromic efficiency and stability of the photochromic molecules are affected; UV glue itself has the property of absorbing ultraviolet rays, and may reduce the response sensitivity of photochromic molecules to ultraviolet rays;
2) The network structure formed after the UV gel is cured may limit the molecular movement of the photochromic molecules, resulting in limited speed and range of color change;
3) Shrinkage or cracking may occur after curing the UV gel, affecting the flatness and uniformity of the functional coating.
Therefore, the similar technical application still has the technical problems in aspects of improving the photochromic efficiency and stability, enhancing the response sensitivity to ultraviolet rays, expanding the color change speed and range, improving the flatness and uniformity of the functional coating and the like, and a new preparation method of the intelligent color-changing functional coating based on the UV adhesive is needed to be searched.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of an intelligent color-changing functional coating based on UV glue. The UV adhesive containing the photochromic molecules is cured in a stepwise curing mode, so that the photochromic efficiency and stability are improved, the response sensitivity to ultraviolet rays is enhanced, the color change speed and range are enlarged, and the flatness and uniformity of the functional coating are improved.
The invention provides a preparation method of an intelligent color-changing functional coating based on UV glue, which comprises the following steps:
s2, pre-curing the UV adhesive coating containing the photochromic molecules under ultraviolet light to form a semi-solid coating with the curing degree of 30%, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 0.1-1W/cm 2 The curing time is 1-60 s; standing for 5-30 s;
s3, performing post-curing treatment on the semi-cured coating under ultraviolet light to form an intelligent color-changing functional coating, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 2-10W/cm 2 The curing time is 1-10 min.
Further, the method further comprises the following steps:
s1, mixing the photochromic molecules with the UV glue, and coating the mixture on a substrate to form a UV glue coating containing the photochromic factors.
Preferably, in step S2, the ultraviolet wavelength is 250-300 nm.
Preferably, in step S2, the ultraviolet intensity is 0.5-1W/cm 2 。
Preferably, in step S2, the curing time is 5 to 30S.
Preferably, in step S3, the ultraviolet wavelength is 250-300 nm.
Preferably, in step S3, the ultraviolet intensity is 2-5W/cm 2 。
Preferably, in step S3, the curing time is 1 to 5 minutes.
Compared with the prior art, the invention has the following advantages:
(1) According to the preparation method of the intelligent color-changing functional coating based on the UV adhesive, provided by the invention, the fluidity, viscosity, thickness and uniformity of the coating can be effectively controlled by adopting a step-by-step curing method, and the problems of flowing, shrinkage, cracking and the like of a liquid formula in the curing process are avoided.
(2) By adopting a step-by-step curing method, the consumption and degradation of the photochromic molecules by the photoinitiator can be inhibited in the pre-curing process, the protective effect of the network structure on the photochromic molecules can be enhanced in the post-curing process, the interaction or interference of the photochromic molecules and the UV adhesive can be effectively controlled, the influence of the UV adhesive on the response sensitivity of the photochromic molecules due to the absorption of ultraviolet rays and visible light can be avoided, and the photochromic efficiency and stability can be effectively improved.
(3) By adopting a stepwise curing method, the response sensitivity to ultraviolet rays can be effectively enhanced, a sufficient number of unreacted unsaturated groups can be reserved in the pre-curing process, and the ultraviolet ray absorption capacity of the unsaturated groups can be improved in the post-curing process.
(4) The preparation method has the advantages of simple process, low cost and large-area preparation, and is suitable for the fields of consumer electronics, automobile electronics, new energy sources and the like.
Drawings
Fig. 1 is a schematic flow chart of a preparation method of an intelligent color-changing functional coating based on UV glue.
Detailed Description
The technical scheme of the invention is described below with reference to the specific embodiments and the accompanying drawings.
The preparation method of the intelligent color-changing functional coating based on the UV glue, as shown in fig. 1, comprises the following steps:
s2, pre-curing the UV adhesive coating containing the photochromic molecules under ultraviolet light to form a semi-solid coating with the curing degree of 30%;
the pre-curing treatment refers to a treatment of partially curing the uncured functional coating under ultraviolet irradiation, in order to improve the flatness and uniformity of the functional coating and avoid shrinkage or cracking. The pre-curing causes a partial polymerization or cross-linking reaction of a portion of the prepolymer in the coating with a portion of the photochromic molecules to form a semi-solid coating having a certain viscosity and strength.
The conditions of the pre-curing treatment can be adjusted according to different photochromic molecules and UV adhesives, and generally comprise parameters such as ultraviolet wavelength, ultraviolet intensity, curing time and the like. The ultraviolet wavelength is generally 200 to 400 nm, preferably 250 to 300 nm. The ultraviolet intensity is generally 0.1-1W/cm 2 Preferably 0.5 to 1W/cm 2 . The curing time is generally 1 to 60 seconds, preferably 5 to 30 seconds. Too low a pre-cure condition may result in insufficient curing of the functional coating and too high a pre-cure condition may result in over-curing of the functional coating.
S3, performing post-curing treatment on the semi-cured coating under ultraviolet light to form an intelligent color-changing functional coating, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 2-10W/cm 2 The curing time is 1-10 min.
The post-curing treatment refers to a treatment of completely curing the pre-cured functional coating under ultraviolet irradiation, so that the residual prepolymer in the coating and the residual photochromic molecules undergo a complete polymerization or crosslinking reaction, thereby forming a solid coating film having a network structure and high strength. The purpose is to improve the photochromic efficiency and stability of the functional coating, enhance the response sensitivity to ultraviolet rays and expand the color change speed and range.
The conditions of the post-curing treatment can be adjusted according to different photochromic molecules and UV adhesives, and generally comprise parameters such as ultraviolet wavelength, ultraviolet intensity, curing time and the like. The ultraviolet wavelength is generally 200 to 400 nm, preferably 250 to 300 nm. The ultraviolet intensity is generally 2-10W/cm 2 Preferably 2 to 5W/cm 2 . The curing time is generally 1 to 10 minutes, preferably 1 to 5 minutes. Too low a condition of the post-cure treatment may result in insufficient curing of the functional coating, and too high a condition of the post-cure treatment may result in excessive curing of the functional coating.
Further, the method further comprises the following steps:
s1, mixing the photochromic molecules with the UV glue, and coating the mixture on a substrate to form a UV glue coating containing the photochromic factors.
In the present invention, the UV glue may be any resin that undergoes a crosslinking reaction under irradiation of ultraviolet rays, such as acrylic resin, epoxy resin, polyurethane resin, and the like. The mixing ratio of the photochromic molecules to the UV glue can be adjusted according to different application requirements, and is generally 0.1% -10%, preferably 0.5% -5%. Too low a mixing ratio may result in insignificant photochromic effects, and too high a mixing ratio may result in poor curing effects of the UV gel.
The substrate may be any material having a certain strength and flexibility, such as plastic, metal, glass, paper, etc.
The coating method may be any of the usual coating methods, such as doctor blade coating, roll coating, spray coating, printing coating, etc.
The thickness of the coating can be adjusted according to different application requirements, and is generally 1-100 μm, preferably 5-50 μm. Too thin a coating thickness can result in insignificant photochromic effects and too thick a coating thickness can result in poor curing effects of the UV gel.
By way of example, the photochromic molecules of the present invention include the following components:
(a) One or more photochromic molecules that undergo a reversible color change upon irradiation with ultraviolet light;
the photochromic molecule may be any molecule which changes its color reversibly or irreversibly under irradiation with ultraviolet or visible light, such as stilbenes, aromatic diketones, triarylmethanes, spiropyrans, aromatic dithioethers, aromatic dithiones, aromatic bisselenones, aromatic bisiodides, aromatic dioxynes, etc.
(b) One or more photoinitiators capable of absorbing ultraviolet light and generating free radicals or cations to initiate polymerization or crosslinking reactions of the photochromic molecules in component (a);
(c) One or more prepolymers containing unsaturated groups compatible with the photochromic molecules in component (a) and capable of undergoing polymerization or crosslinking reactions therewith;
(d) One or more solvents that are capable of dissolving or dispersing the components (a), (b) and (c) and that are capable of volatilizing during the curing process.
The mechanism is as follows:
(1) The interaction between the photochromic molecules and the UV adhesive can be effectively controlled by low-intensity ultraviolet irradiation in the pre-curing stage, so that the photochromic efficiency and stability are improved.
(2) The pre-curing can improve the evenness and uniformity of the coating in advance, and avoid cracking in the post-curing process.
(3) The high-intensity ultraviolet irradiation in the post-curing stage can promote the complete curing of the UV glue and enhance the mechanical strength of the coating.
(4) The photochromic performance and the coating performance can be independently optimized by step curing, and the regulation and control of the performances such as the photoresponse sensitivity, the color change range and the like can be realized.
The technical scheme of the invention is further described by the following specific examples.
Example 1
An intelligent color-changing functional coating based on UV glue comprises the following preparation method steps:
(1) Mixing a photochromic molecule CVLSH-Zn-Br with a UV gel NOA61 according to the proportion of 2% to obtain a photochromic UV gel solution;
CVLSH-Zn-Br is a photochromic molecule with a lower alkaline counter ion, which can enhance its response sensitivity to ultraviolet rays and photochromic activity. NOA61 is an acrylic resin which undergoes a crosslinking reaction under irradiation of ultraviolet rays and is excellent in transparency, adhesion and weather resistance.
(2) Coating the photochromic UV glue solution on a PET film to obtain an uncured functional coating;
PET film is a plastic material with certain strength and flexibility, and is commonly used as a base material of functional coating composite materials.
The coating mode adopts a doctor blade coating mode, and the thickness of the coating is 10 mu m.
(3) Pre-curing the uncured functional coating to obtain a functional coating with the curing degree of 30%; standing for 20s;
the pre-curing treatment adopts ultraviolet wavelength of 250 nm and ultraviolet intensity of 1W/cm 2 The curing time was 10 s.
(4) And (3) performing post-curing treatment on the pre-cured functional coating to obtain the final functional coating.
The post-curing treatment adopts ultraviolet with wavelength of 250 nm and ultraviolet intensity of 5W/cm 2 The curing time was 2 min.
Example 2
An intelligent color-changing functional coating based on UV glue comprises the following preparation method steps:
(1) Mixing a photochromic molecule CVLSH-Zn-Br with a UV gel NOA61 according to a proportion of 5% to obtain a photochromic UV gel solution;
(2) Coating the photochromic UV glue solution on a PET film to obtain an uncured functional coating;
the coating mode adopts a doctor blade coating mode, and the thickness of the coating is 5 mu m.
(3) Pre-curing the uncured functional coating to obtain a functional coating with the curing degree of 30%; standing for 5s;
the pre-curing treatment adopts ultraviolet with wavelength of 300 nm and ultraviolet intensity of 0.1W/cm 2 The curing time was 30 s.
(4) And (3) performing post-curing treatment on the pre-cured functional coating to obtain the final functional coating.
The post-curing treatment adopts ultraviolet with wavelength of 300 nm and ultraviolet intensity of 2W/cm 2 The curing time was 10 min.
Example 3
An intelligent color-changing functional coating based on UV glue comprises the following preparation method steps:
(1) Mixing a photochromic molecule CVLSH-Zn-Br with a UV gel NOA61 according to the proportion of 2% to obtain a photochromic UV gel solution;
(2) Coating the photochromic UV glue solution on a PET film to obtain an uncured functional coating;
the coating mode adopts a doctor blade coating mode, and the thickness of the coating is 50 mu m.
(3) Pre-curing the uncured functional coating to obtain a functional coating with the curing degree of 30%; standing for 30s;
pre-curing treatmentThe ultraviolet wavelength is 400 nm, and the ultraviolet intensity is 1W/cm 2 The curing time was 60 s.
(4) And (3) performing post-curing treatment on the pre-cured functional coating to obtain the final functional coating.
The post-curing treatment adopts ultraviolet wavelength of 400 nm and ultraviolet intensity of 10W/cm 2 The curing time was 10 min.
Comparative example 1: direct curing process
The same photochromic molecules, UV gel, substrate, mixing ratio, coating mode and coating thickness as in example 1 were used, but the pre-curing treatment was not performed, but the uncured functional coating was directly post-cured (i.e., using an ultraviolet wavelength of 250 nm, an ultraviolet intensity of 5W/cm) 2 Curing time was 2 min).
Comparative example 2: without addition of photochromic molecules
Exactly the same preparation method and curing conditions as in the examples were used, but no photochromic molecules were added.
Comparative example 3: step curing method
The same photochromic molecules, UV gel, substrate, mixing ratio, coating mode and coating thickness as in the examples were used, but the post-curing treatment was performed in two steps, namely, the first step of curing was performed with an ultraviolet wavelength of 300 nm, an ultraviolet intensity of 5W/cm2 and a curing time of 30s, and then the second step of curing was performed with an ultraviolet wavelength of 400 nm, an ultraviolet intensity of 10W/cm2 and a curing time of 10 min.
Performance test:
the coatings prepared in example 1 and comparative examples 1-2 were tested. The results are shown in Table 1.
1. Photochromic stability (secondary)
"Secondary" refers to the number of cycles that the photochromic material undergoes a color change. That is, photochromic stability means the number of cycles that a material can stably operate in a cycle in which repeated illumination causes a color change.
2. Photochromic efficiency (%)
Indicating how effective the material achieves the desired color change under the given lighting conditions.
The specific method for detecting the photochromic efficiency is as follows:
1) A sample of photochromic material was prepared and cured well.
2) The spectral reflectance or absorbance of the sample under the given illumination conditions was measured using an ultraviolet-visible spectrophotometer.
3) When not illuminated, a baseline spectrum of the sample was recorded.
4) The sample was illuminated and after a certain time the spectrum was measured.
5) And analyzing the spectrum data, and calculating the change of the reflectivity or absorptivity of the sample at a specific wavelength before and after illumination.
6) The photochromic efficiency can be obtained by dividing the variation by the theoretical maximum variation.
7) Repeating the steps 3-6, and calculating the photochromic cycle efficiency.
8) The photochromic efficiency was measured using different lighting conditions (e.g. wavelength, intensity).
9) The photochromic efficiencies of the different preparation methods were compared.
3. Response sensitivity (mW/cm) 2 )
Refers to the sensitivity of a photochromic material to the response of light, which characterizes the minimum light intensity required by the material to achieve an observable color change.
The method for detecting response sensitivity is as follows:
1) A sample of photochromic material was prepared and cured well.
2) A monochromatic light source, such as an ultraviolet LED light source, is used which can adjust the intensity of light.
3) The initial light intensity of the light source is set to be 0 mW/cm 2.
4) The reflectance or transmittance of the samples was measured using a spectrophotometer.
5) The light intensity of the light source is increased, for example, by 0.01 mW/cm 2 steps.
6) The spectral change of the sample is measured for each adjustment of the light intensity.
7) When the spectral response of the sample reaches a preset variation threshold, the light intensity at that time is recorded.
8) The light intensity is the response sensitivity of the sample.
9) Repeating the steps 3-8 to obtain the average value of response sensitivity.
10 Test response sensitivity at different wavelengths.
11 The response sensitivities of the different materials are compared).
4. Color change Range (RGB)
The RGB three primary color model is used for representing the color change interval which can be realized by the photochromic material when the illumination condition is changed.
The RGB value ranges are generally expressed by (Rmin, gmin, bmin) - (Rmax, gmax, bmax).
Wherein:
r, G and B respectively represent the color intensities of the three primary colors of red, green and blue, and the range of the values is 0-255.
min represents the minimum value of the color change of the material and max represents the maximum value.
The detection method comprises the following steps:
the reflectance of the sample in the visible spectrum under different illumination conditions was measured with a spectrophotometer.
RGB spectroscopic values of the samples under each condition were calculated.
And obtaining RGB value intervals of the material under all test conditions.
The maximum and minimum values of the interval are the color change ranges.
5. Flatness of
The coating surface finish degree is the surface finish degree, and the defects of undulation, cracks, potholes and the like are avoided.
The detection method is usually visual inspection and touching of the coating surface, and the surface profile meter can also be used to measure the height of the coating surface.
TABLE 1 Performance test results
| Experiment | Photochromic effect Rate (%) | Photochromic stabilization Sex (times) | Response sensitivity (mW/cm 2 ) | Speed of color change Degree(s) | Color change range (RGB) | Flatness and uniformity Uniformity of |
| Implementation of the embodiments Example 1 | 95.6 | 1000 | 0.01 | 5 | (255，0，255) ~ (255，255，255) | Without shrinkage or opening Cracking of |
| Implementation of the embodiments Example 2 | 94.8 | 1000 | 0.01 | 5 | (255，0，255) ~ (255，255，255) | Without shrinkage or opening Cracking of |
| Implementation of the embodiments Example 3 | 95.4 | 1000 | 0.01 | 5 | (255，0，255) ~ (255，255，255) | Without shrinkage or opening Cracking of |
| Comparison Example 1 | 85.2 | 500 | 0.1 | 10 | (200，0，200) ~ (240，240，240) | Has slight shrinkage And cracking of |
| Comparison Example 2 | 0 | 0 | Non-response | No change | No change | Normal state |
| Comparison Example 3 | 93.2 | 800 | 0.05 | 7 | (230，0，230) ~ (250，250，250) | Without shrinkage or opening Cracking of |
As can be seen from Table 1, the functional coatings prepared in examples 1 to 3 are superior to the comparative examples in terms of photochromic efficiency and stability, response sensitivity, speed and range of color change, flatness and uniformity, etc. Therefore, the stepwise curing method provided by the invention can effectively improve the photochromic effect of the UV adhesive coating containing the photochromic factors.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. The preparation method of the intelligent color-changing functional coating based on the UV adhesive is characterized by comprising the following steps of:
s2, pre-curing the UV adhesive coating containing the photochromic molecules under ultraviolet light to form a semi-solid coating with the curing degree of 30%, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 0.1-1W/cm 2 The curing time is 1-60 s; standing for 5-30 s;
s3, performing post-curing treatment on the semi-cured coating under ultraviolet light to form an intelligent color-changing functional coating, wherein the wavelength of the ultraviolet light is 200-400 nm, and the intensity of the ultraviolet light is 2-10W/cm 2 The curing time is 1-10 min.
2. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, further comprising:
s1, mixing the photochromic molecules with the UV glue, and coating the mixture on a substrate to form a UV glue coating containing the photochromic factors.
3. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, wherein in the step S2, the ultraviolet wavelength is 250-300 nm.
4. According to claimThe preparation method of the intelligent color-changing functional coating based on the UV adhesive is characterized in that in the step S2, the ultraviolet intensity is 0.5-1W/cm 2 。
5. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, wherein in the step S2, the curing time is 5-30S.
6. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, wherein in the step S3, the ultraviolet wavelength is 250-300 nm.
7. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, wherein in the step S3, the ultraviolet intensity is 2-5W/cm 2 。
8. The method for preparing the intelligent color-changing functional coating based on the UV glue according to claim 1, wherein in the step S3, the curing time is 1-5 min.
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| CN202311291900.1A CN117304757A (en) | 2023-10-08 | 2023-10-08 | Preparation method of intelligent color-changing functional coating based on UV adhesive |
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