Water-based LED (light-emitting diode) photocuring stain-resistant and fingerprint-resistant coating and preparation method thereof

Abstract

The invention relates to the field of wood coatings, in particular to a water-based LED light-cured stain-resistant and fingerprint-resistant coating and a preparation method thereof. The water-based LED photocuring stain-resistant and fingerprint-resistant coating is prepared from the following components in parts by weight: 20 to 30 parts of water-based organic silicon modified resin, 40 to 60 parts of water-based polyurethane resin, 10 to 20 parts of water-based acrylic resin, 8 to 15 parts of water-based fluororesin, 5 to 10 parts of UV monomer, 4 to 12 parts of photoinitiator, 8 to 15 parts of deionized water and 0.3 to 2 parts of water-based thickening agent, the photoinitiator comprises at least one of ginkgo flavone, hesperidin and soy isoflavone. Ginkgo flavone, hesperidin and soy isoflavone are used as photoinitiators, and a stable cross-linked network structure is formed through a photocuring process, so that a layer of hard and compact film is formed on the surface of the coating, the wear resistance and scratch resistance are improved, and attachment of dirt such as fingerprint grease can be effectively prevented.

Description

Technical Field

[0001] The present application relates to the field of wood coatings, and in particular to a water-based LED light-cured stain-resistant and fingerprint-resistant coating and a preparation method thereof. Background Art

[0002] Currently, there are two main types of wood furniture coatings: oil-based and water-based. Due to environmental concerns and excessive levels of formaldehyde and benzene, oil-based coatings are no longer suitable for home decoration, especially for custom-made furniture. Water-based coatings make up for the shortcomings of oil-based coatings.

[0003] Prior art water-based paints are susceptible to environmental temperature and humidity during application, leading to uneven drying and incomplete curing. Furniture often comes into contact with the human body during use, and grease and moisture from fingers constantly come into contact with the paint surface. Incompletely cured coatings are easily penetrated or scratched by these substances, leaving fingerprints and affecting the overall aesthetics, necessitating frequent cleaning and maintenance. Summary of the Invention

[0004] In order to solve the problem that water-based coatings cure slowly and easily leave fingerprints on their surfaces, the present application provides a water-based LED light-curing stain-resistant and fingerprint-resistant coating. The coating undergoes a light-curing process through the photoinitiators (ginkgo flavonoids, hesperidin and soy isoflavones) in the components to form a thin film composed of a cross-linked network structure, thereby improving the wear resistance and scratch resistance of the coating, and can effectively prevent the adhesion of fingerprints, grease and other contaminants.

[0005] In the first aspect, the present application provides a water-based LED light-curing anti-fouling and anti-fingerprint coating, which adopts the following technical solution: a water-based LED light-curing anti-fouling and anti-fingerprint coating, comprising the following components in parts by weight: 20-30 parts of a water-based silicone modified resin, 40-60 parts of a water-based polyurethane resin, 10-20 parts of a water-based acrylic resin, 8-15 parts of a water-based fluororesin, 5-10 parts of a UV monomer, 4-12 parts of a photoinitiator, 8-15 parts of deionized water, and 0.3-2 parts of a water-based thickener; the photoinitiator comprises at least one of ginkgo flavonoids, hesperidin, and soy isoflavones.

[0006] By adopting the above technical solution, ginkgo flavonoids, hesperidin and soy isoflavones are used as photoinitiators, which can efficiently absorb light energy under the irradiation of LED light sources. After absorbing light energy, they undergo photochemical reactions and release active free radicals. These free radicals are highly active in the coating system and can quickly undergo addition polymerization reactions with the unsaturated bonds of UV monomers (such as acrylate monomers) and other resin molecules (such as water-based silicone modified resins, water-based polyurethane resins, water-based acrylic resins and water-based fluororesins), forming a stable cross-linked network structure.

[0007] The formation of a cross-linked network structure creates a hard, dense film on the coating surface. This film not only possesses excellent physical and mechanical properties, such as abrasion resistance and scratch resistance, but also effectively prevents the adhesion of contaminants such as fingerprints and grease. Even small amounts of contaminants can be easily removed, maintaining the cleanliness and aesthetics of the coating surface. During the light-curing process, the coating surface gradually becomes smooth and delicate, with its roughness significantly reduced. This not only enhances the coating's visual appeal but also makes it easier to clean and maintain.

[0008] This coating utilizes a water-based system, which reduces the use of organic solvents and lowers VOC (volatile organic compound) emissions, thus complying with environmental protection requirements. Furthermore, the choice of photoinitiator also favors natural or natural-like compounds, further enhancing the coating's environmental performance.

[0009] This application uses ginkgo flavonoids, hesperidin and soy isoflavones as photoinitiators to absorb light energy and release free radicals. The free radicals undergo addition polymerization reactions with UV monomers and unsaturated bonds of other resin molecules to form a stable cross-linked network structure. The formation of the cross-linked network structure allows a hard and dense film to form on the surface of the coating, thereby improving wear resistance and scratch resistance, and can effectively prevent the adhesion of contaminants such as fingerprints and grease.

[0010] Preferably, the UV monomer includes at least one of methyl acrylate, acryloylmorpholine and methyl methacrylate.

[0011] By adopting the above technical solution, methyl acrylate exhibits high reactivity and can rapidly undergo polymerization under the action of a photoinitiator, facilitating rapid curing of the coating. The polymer formed after polymerization of methyl acrylate exhibits good flexibility and adhesion, enabling the coating to form a strong and somewhat elastic coating upon application to the substrate. Methyl acrylate polymers generally exhibit good transparency, making them suitable for coating applications requiring high transparency.

[0012] Acryloylmorpholine contains a morpholine ring, which may impart unique chemical and physical properties, such as water and solvent resistance. Due to its unique structure, acryloylmorpholine can be used as a modifying monomer, copolymerized with other monomers to improve the overall performance of coatings. Methyl methacrylate has excellent transparency, similar to glass, making it very useful in preparing clear or high-gloss coatings.

[0013] Preferably, the mass ratio of the ginkgo flavonoids to the UV monomer is (4-7):8.

[0014] By adopting the above technical solution, the ginkgo flavonoids molecule contains multiple phenolic hydroxyl groups. These phenolic hydroxyl groups give the ginkgo flavonoids a strong hydrogen-donating ability or reducing property, which enables them to undergo electronic transitions under light and generate free radicals. If the content of ginkgo flavonoids is too low, the light energy absorbed may not be sufficient to generate enough free radicals to initiate and maintain the polymerization reaction of the UV monomer. This will cause the coating to slow down in curing speed or even fail to completely cure, thereby affecting the final performance of the coating. When the ginkgo flavonoids content is too high, the free radicals generated are too high, which may trigger side reactions, such as quenching reactions between free radicals, thereby reducing the overall cross-linking efficiency.

[0015] Preferably, the mass ratio of the hesperidin to the UV monomer is (6-10):8.

[0016] If the hesperidin content is too low, the absorbed light energy may not generate enough free radicals to initiate and sustain the polymerization reaction of the UV monomer. This will slow the curing of the coating or even prevent complete curing, thus affecting the coating's final performance. If the hesperidin content is too high, the amount of free radicals generated may be excessive, potentially triggering side reactions such as quenching reactions between free radicals, thereby reducing the overall crosslinking efficiency.

[0017] Preferably, the mass ratio of the soy isoflavones to the UV monomer is (8-12):8.

[0018] If the soy isoflavone content is too low, the absorbed light energy may not be sufficient to generate sufficient free radicals to initiate and sustain the polymerization reaction of the UV monomer. This will slow the coating's curing speed or even prevent complete curing, thus affecting the coating's final performance. If the soy isoflavone content is too high, excessive free radical generation may trigger side reactions, such as quenching reactions between free radicals, thereby reducing overall crosslinking efficiency.

[0019] Preferably, the water-based LED light-curing anti-fouling and anti-fingerprint coating further includes a pH regulator, and the pH regulator includes at least one of triethylamine, triethanolamine, and sodium hydroxide.

[0020] By adopting the above technical solution, the water-based coating system is more sensitive to pH value, especially in light-curing coatings, where changes in pH may affect the stability of the resin, the dispersibility of the emulsion, and the dispersibility of the pigment. Under alkaline conditions, the storage stability and physical and chemical properties of the coating are generally better. During the light-curing process, the pH value of the coating will affect the generation of free radicals and the progress of the cross-linking reaction. The alkaline environment is conducive to the stable existence and effective propagation of free radicals, thereby promoting the occurrence of cross-linking reactions and improving the curing speed and curing quality of the coating. Alkaline pH regulators such as triethylamine, triethanolamine, sodium hydroxide, etc., not only have strong alkalinity, but also have good solubility and volatility. While adjusting the pH value, they will not have a negative impact on the coating system, and can gradually evaporate from the coating film after the coating film is formed, without affecting the performance of the coating film.

[0021] Preferably, the weight portion of the pH adjuster is 0.1-0.3 parts.

[0022] By adopting the above technical solution, water-based coatings are inherently acidic or neutral. The addition of an alkaline pH adjuster can neutralize the acidic components in the system. However, if the pH adjuster content is too low, it may not effectively neutralize the acidic components in the coating system, causing the pH value of the coating system to deviate from the optimal range. This can affect the storage stability and physical and chemical properties of the coating, such as the dispersibility of the emulsion and the dispersibility of the pigment, and thus affect the overall performance of the coating. If the pH value is too low, it may inhibit the stable existence and effective propagation of free radicals, resulting in the obstruction of the cross-linking reaction and reduced curing speed and quality of the coating.

[0023] When the pH adjuster content is too high, the pH value of the coating system will be too high, which may exceed the tolerance range of the coating. This will cause changes in the coating's performance, such as increased viscosity and poor fluidity, affecting the coating's application performance and the quality of the final coating film.

[0024] In a second aspect, the present application provides a method for preparing a water-based LED light-cured anti-fouling and anti-fingerprint coating, which adopts the following technical solution: A method for preparing a water-based LED light-cured anti-fouling and anti-fingerprint coating, which is used to prepare the water-based LED light-cured anti-fouling and anti-fingerprint coating, comprises the following steps: Step 1: Add water-based organosilicon modified resin, water-based polyurethane resin, water-based acrylic resin, and water-based fluororesin into a mixing container in sequence according to the formula amount and stir them evenly to obtain a matrix mixture; Step 2: adding the UV monomer to the matrix mixture according to the formula amount and stirring evenly to obtain a second mixture; Step 3: adding a pH regulator according to the formula amount to the second mixture and stirring evenly to obtain a third mixture; Step 4: adding the photoinitiator to the third mixture according to the formula amount and stirring evenly to obtain a fourth mixture; Step 5: adding deionized water and other additives according to the formula amount to the fourth mixture and stirring evenly to obtain a fifth mixture; Step 6: Add the water-based thickener to the fifth mixture according to the formula amount and stir evenly to obtain a water-based LED light-curable anti-fouling and anti-fingerprint coating.

[0025] By adopting the above technical solution, the entire preparation process focuses on the uniform mixing of various components and the stability of the coating performance. Through precise formula control and rigorous operating steps, the final water-based LED light-curing anti-fouling and anti-fingerprint coating is ensured to have excellent performance.

[0026] Preferably, in step 4, after adding the photoinitiator, the stirring rate is 600-800 rpm.

[0027] When the stirring rate is too high, excessive shear forces are applied to the coating mixture. This excessive shearing can disrupt the structure of the resin molecules and the distribution of the photoinitiator in the mixture, thereby affecting the final properties of the coating. When the stirring rate is too low, the photoinitiator may not be dispersed quickly and evenly in the coating mixture. This leads to uneven distribution of the photoinitiator in the mixture, which in turn affects the polymerization effect of the coating during the light curing process.

[0028] Preferably, in step 4, the stirring rate is 300-500 rpm when the photoinitiator is added.

[0029] By adopting this technical solution, the primary goal during the initial addition of the photoinitiator is to ensure its rapid and even dispersion into the coating. A lower stirring rate helps reduce splashing and localized concentration of the photoinitiator during addition, making it easier to achieve even dispersion.

[0030] In summary, this application has the following beneficial effects: 1. Since the present application uses ginkgo flavonoids, hesperidin and soy isoflavones as photoinitiators, which absorb light energy to release free radicals, the free radicals undergo addition polymerization reactions with UV monomers and unsaturated bonds of other resin molecules to form a stable cross-linked network structure. The formation of the cross-linked network structure enables a hard and dense film to be formed on the surface of the coating, thereby improving wear resistance and scratch resistance, and can effectively prevent the adhesion of dirt such as fingerprints and grease. DETAILED DESCRIPTION

[0031] The raw materials in this application include the following parts: Water-based silicone modified resin: commercially available product; Waterborne polyurethane resin: a commercially available product with CAS number 9017-09-8 is used; Water-based acrylic resin: a commercially available product with CAS number 25767-39-9 is used; Water-based fluororesin: commercially available products; Methyl acrylate: a commercially available product with CAS number 96-33-3 was used; Acryloylmorpholine: a commercially available product with CAS number 5117-12-4 was used; Methyl methacrylate: a commercially available product with CAS number 80-62-6 was used; Ginkgo flavonoids: a commercial product with CAS number 481-46-9 was used; Hesperidin: a commercially available product with CAS number 13241-33-3 was used; Soy isoflavones: a commercially available product with CAS number 574-12-9 was used; Deionized water: Use commercially available product with CAS number 7732-18-5; Water-based thickener: Use commercially available products; Triethylamine: a commercial product with CAS number 121-44-8 was used; Triethanolamine: a commercially available product with CAS number 102-71-6; Sodium hydroxide: a commercially available product with CAS number 8012-01-9 was used; The present application is further described in detail below with reference to the following examples and comparative examples.

[0032] Example 1 A method for preparing a water-based LED light-cured anti-fouling and anti-fingerprint coating comprises the following steps: Step 1: 25 g of water-based organosilicon modified resin, 50 g of water-based polyurethane resin, 15 g of water-based acrylic resin, and 12 g of water-based fluororesin were sequentially added into a mixing container and stirred evenly at a stirring rate of 500 rpm for 25 min to obtain a matrix mixture; Step 2: Add 8 g of methyl acrylate to the matrix mixture and stir evenly at a stirring rate of 700 rpm for 10 min to obtain a second mixture; Step 3: Add 6 g of ginkgo flavonoids to the second mixture and stir evenly at a stirring rate of 700 rpm during and after the addition for 15 minutes to obtain a third mixture; Step 4: Add 12 g of deionized water to the third mixture and stir evenly at a stirring rate of 400 rpm for 20 minutes to obtain a fourth mixture; other additives such as a substrate wetting agent, a defoaming agent, a leveling agent, a fungicide, etc. may be added in step 4 as needed; Step 5: Add 1.5 g of the aqueous thickener to the fourth mixture and stir evenly. Increase the stirring rate to 900 rpm and stir for 20 minutes to obtain a water-based LED light-curable anti-fouling and anti-fingerprint coating.

[0033] Example 2-3 In Example 2-3, based on the preparation method of Example 1, the content of each component of the water-based LED light-curing anti-fouling and anti-fingerprint coating was adjusted. The specific adjustments are shown in Table 1.

[0034] Comparative Examples 1-3 Comparative Examples 1-3 are based on the preparation method of Example 1, and the content of each component of the water-based LED light-curing anti-fouling and anti-fingerprint coating is adjusted. The specific adjustments are shown in Table 1.

[0035] Table 1 Contents and performance test table of each component of water-based LED light-cured anti-fouling and anti-fingerprint coatings of Examples 1-3 and Comparative Examples 1-3 Performance Testing: The water-based LED light-curable, anti-fouling and anti-fingerprint coatings from Examples 1-3 and Comparative Examples 1-3 were sprayed onto composite panels pre-sealed with a sealing primer, with a film thickness of 40 μm. Drying conditions: Leveling at 40-45°C for 3-5 minutes. Curing method: Curing using a 395 nm LED light source at a curing distance of 50 cm. The cured coatings were then subjected to the following performance tests. The test results are shown in Table 1: 1. Anti-fouling performance Rub the same area of ​​the coating with an oil pen and measure the coating's stain resistance by the number of times the scratch can be erased. The more times the scratch can be erased, the better.

[0036] 2. Wear resistance The wear resistance of the coating was determined according to the rotating rubber grinding wheel method of GB / T1768, with a rotation speed of 50 rpm. The maximum number of wear times of the grinding wheel before the bottom was exposed was recorded. The higher the maximum wear times, the better.

[0037] Referring to Table 1, it can be seen from the comparison between Examples 1-3 and Comparative Examples 1-3 that the erasable times and the maximum wear times of Examples 1-3 are much higher than those of Comparative Example 3, indicating that ginkgo flavonoids can act as a photoinitiator and can efficiently absorb light energy under the irradiation of LED light sources, and react to release active free radicals. These free radicals are highly active in the coating system and can quickly undergo addition polymerization with the unsaturated bonds of UV monomers (such as acrylate monomers) and other resin molecules (such as water-based silicone modified resins, water-based polyurethane resins, water-based acrylic resins and water-based fluororesins) to form a stable cross-linked network structure. The cross-linked network structure improves the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating after curing.

[0038] In addition, by comparing Examples 1-3, it is found that Example 1 has the best performance, so Example 1 is preferred.

[0039] Examples 4-6 Example 4-6 Based on the preparation method of Example 4, the amount of ginkgo flavonoids added was adjusted. The specific adjustments are shown in Table 2.

[0040] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 4-6 were subjected to the above performance tests, and the test results are shown in Table 2.

[0041] Table 2: Addition amount and performance test table of ginkgo flavonoids in Example 1 and Examples 4-6 Item Example 1 Example 4 Example 5 Example 6 Ginkgo flavones / g 6 4 7 8 Erasing times / each 572 532 558 536 Maximum wearing times / each 1703 1622 1672 1625 Referring to Table 2, it can be seen from the comparison between Example 1 and Examples 4-6 that as the amount of ginkgo flavonoids added continues to increase, the number of erasable times and the maximum number of wear times both show a trend of first increasing and then decreasing. This may be because as the amount of ginkgo flavonoids added continues to increase, the ginkgo flavonoids molecule contains multiple phenolic hydroxyl groups, which give the ginkgo flavonoids a strong hydrogen-donating ability or reducing property, and can undergo electronic transitions under light, thereby generating free radicals. The gradually increasing free radicals initiate and maintain the polymerization reaction of the UV monomer, promote the curing reaction, and thus increase the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating; when the amount of ginkgo flavonoids added exceeds a certain range, the free radicals generated are too high, which may trigger side reactions, such as quenching reactions between free radicals, reducing the overall cross-linking efficiency, thereby reducing the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating.

[0042] Examples 7-10 Example 7 Based on the preparation method of Example 1, 5 g of ginkgo flavonoids was replaced with 8 g of hesperidin, and the other conditions remained unchanged.

[0043] In Examples 8-10, based on the preparation method of Example 7, the amount of hesperidin added was adjusted. The specific adjustments are shown in Table 3.

[0044] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 7-10 were subjected to the above performance tests. The test results are shown in Table 3.

[0045] Table 3. Amount of hesperidin added and performance test table of Example 1 and Examples 7-10 Referring to Table 3, by comparing Example 1 with Examples 7-10, it can be seen that replacing the ginkgo flavonoids with hesperidin can also meet the requirements of this application.

[0046] As the amount of hesperidin added continues to increase, the number of erasable times and the maximum number of wear times both show a trend of first increasing and then decreasing. This may be because as the amount of hesperidin added continues to increase, the light energy absorbed by hesperidin gradually reacts to produce free radicals, which initiate and maintain the polymerization reaction of the UV monomer, accelerate the curing speed, and thus increase the stain resistance and wear resistance of the water-based LED light-cured anti-fouling and anti-fingerprint coating; when the amount of hesperidin added exceeds a certain range, the free radicals generated are too high, which may trigger side reactions, such as quenching reactions between free radicals, reducing the overall cross-linking efficiency, thereby reducing the stain resistance and wear resistance of the water-based LED light-cured anti-fouling and anti-fingerprint coating.

[0047] Examples 11-14 Example 11 Based on the preparation method of Example 1, 5g of ginkgo flavonoids was replaced with 10g of soy isoflavones, and the other conditions remained unchanged.

[0048] In Examples 12-14, based on the preparation method of Example 7, the amount of soy isoflavones added was adjusted. The specific adjustments are shown in Table 4.

[0049] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 11-14 were subjected to the above performance tests. The test results are shown in Table 4.

[0050] Table 4 Addition amount and performance test table of soybean isoflavones in Example 1 and Examples 11-14 Item Example 1 Example 11 Example 12 Example 13 Example 14 Soy isoflavones / g / 10 6 8 12 Erasing times / each 572 552 500 536 528 Maximum wearing times / each 1703 1663 1545 1625 1602 Referring to Table 4, by comparing Example 1 with Examples 11-14, it can be seen that replacing the ginkgo flavonoids with soy isoflavones can also meet the requirements of this application.

[0051] As the amount of soy isoflavones added continues to increase, the number of erasable times and the maximum number of wear times both show a trend of first increasing and then decreasing. This may be because as the amount of soy isoflavones added continues to increase, the light energy absorbed by soy isoflavones gradually reacts to produce free radicals, which start and maintain the polymerization reaction of UV monomers, accelerate the curing speed, and thus increase the stain resistance and wear resistance of water-based LED light-cured anti-fouling and anti-fingerprint coatings; when the amount of soy isoflavones added exceeds a certain range, the free radicals generated are too high, which may trigger side reactions, such as quenching reactions between free radicals, reducing the overall cross-linking efficiency, thereby reducing the stain resistance and wear resistance of water-based LED light-cured anti-fouling and anti-fingerprint coatings.

[0052] Examples 15-16 In Examples 15-16, based on the preparation method of Example 1, the type of UV monomer was adjusted. The specific adjustments are shown in Table 5.

[0053] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 15-16 were subjected to the above performance tests, and the test results are shown in Table 5.

[0054] Table 5 UV monomer types and performance test table of Example 1 and Examples 15-16 Item Example 1 Example 15 Example 16 UV monomer species Methyl acrylate Acryloyl morpholine Methyl methacrylate Erasing times / each 572 568 570 Maximum wearing times / each 1703 1695 1699 Referring to Table 5, it can be seen from the comparison between Example 1 and Examples 15-16 that different UV monomers, such as acryloylmorpholine and methyl methacrylate, can be used in this application.

[0055] Examples 17-19 Example 17 Based on the preparation method of Example 1, 0.2 g of triethylamine was added to the second mixture and stirred evenly at a stirring rate of 700 rpm for 8 min to obtain a third mixture. Ginkgo flavonoids was then added to the third mixture and stirred for mixing, while other conditions remained unchanged.

[0056] Examples 18-19 are based on the preparation method of Example 17, except that triethylamine is replaced with other pH regulators. The specific adjustments are shown in Table 6.

[0057] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 17-19 were subjected to the above performance tests, and the test results are shown in Table 6.

[0058] Table 6 Types and performance test table of pH regulators in Example 1 and Examples 17-19 Referring to Table 6, it can be seen from Comparative Example 1 and Examples 17-19 that a pH adjusting agent is added to adjust the coating to alkalinity. The alkaline environment is conducive to the stable existence and effective propagation of free radicals, thereby promoting the occurrence of cross-linking reaction and improving the curing speed and curing quality of the coating. Therefore, adding an alkaline pH adjusting agent such as triethylamine, triethanolamine, sodium hydroxide, etc. not only has stronger alkalinity, but also has good solubility and volatility. While adjusting the pH value, they will not have a negative impact on the coating system, and can gradually volatilize and leave the film after the coating film is formed, without affecting the performance of the film. Comparatively speaking, Example 17 is preferred.

[0059] Examples 20-21 In Examples 20-21, based on the preparation method of Example 17, the amount of triethylamine added was adjusted, and the specific adjustments are shown in Table 7.

[0060] Comparative Examples 4-5 Comparative Example 4-5 is based on the preparation method of Example 17, and the amount of triethylamine added is adjusted. The specific adjustment is shown in Table 7.

[0061] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 20-21 and Comparative Examples 4-5 were subjected to the above performance tests. The test results are shown in Table 7.

[0062] Table 7 Amount of triethylamine added and performance test table of Example 17, Examples 20-21 and Comparative Examples 4-5 Item Example 17 Example 20 Example 21 Comparative Example 4 Comparative Example 5 Triethylamine / g 0.2 0.1 0.3 0.05 0.4 Erasing times / each 590 578 582 572 570 Maximum wearing times / each 1739 1715 1725 1703 1698 Referring to Table 7, it can be seen from the comparison of Example 17, Examples 20-21 and Comparative Examples 4-5 that as the amount of triethylamine added continues to increase, the number of erasable times and the maximum wear times both show a trend of first increasing and then decreasing. This may be because as the amount of triethylamine added continues to increase, the acidic components in the coating system are effectively neutralized, causing the pH value of the coating system to gradually approach the optimal range, thereby increasing the stain resistance and wear resistance of the water-based LED light-curable stain-resistant and fingerprint-resistant coating; when the amount of triethylamine added exceeds a certain range, the pH value of the coating system may be too high, which may exceed the tolerance range of the coating, thereby reducing the stain resistance and wear resistance of the water-based LED light-curable stain-resistant and fingerprint-resistant coating.

[0063] Examples 22-23 In Examples 22-23, based on the preparation method of Example 1, the stirring rate after adding ginkgo flavonoids was adjusted. The specific adjustments are shown in Table 8.

[0064] Comparative Examples 6-7 Comparative Example 6-7 is based on the preparation method of Example 1, except that the stirring rate after adding ginkgo flavonoids is adjusted. The specific adjustment is shown in Table 8.

[0065] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 22-23 and Comparative Examples 6-7 were subjected to the above performance tests. The test results are shown in Table 8.

[0066] Table 8 Stirring rate and performance test table of Example 1, Examples 22-23 and Comparative Examples 6-7 Item Example 1 Example 22 Example 23 Comparative Example 6 Comparative Example 7 Stirring rate / rpm 700 600 800 500 900 Erasing times / each 572 543 556 496 524 Maximum wearing times / each 1703 1645 1668 1539 1593 Referring to Table 8, it can be seen from the comparison of Example 1, Examples 22-23 and Comparative Examples 6-7 that as the stirring rate after the addition of ginkgo flavonoids continues to increase, the number of erasable times and the maximum wear times both show a trend of first increasing and then decreasing. This may be because as the stirring rate after the addition of ginkgo flavonoids continues to increase, the ginkgo flavonoids gradually and evenly disperse in the coating mixture, thereby improving the distribution effect of ginkgo flavonoids in the mixture, and then improving the polymerization effect of the coating during the light curing process, thereby increasing the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating; when the stirring rate after the addition of ginkgo flavonoids exceeds a certain range, the structure between the resin molecules and the distribution state of ginkgo flavonoids in the mixture may be destroyed, thereby reducing the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating.

[0067] Examples 24-26 Example 24 is based on the preparation method of Example 1, and stirring is performed when adding ginkgo flavonoids, and the stirring rate is 400 rpm, that is, the stirring rate is 400 rpm when adding ginkgo flavonoids. After the addition is completed, the stirring rate is increased to 700 rpm, and other conditions remain unchanged.

[0068] Examples 24-26 are based on the preparation method of Example 24, except that the stirring rate is adjusted when adding ginkgo flavonoids. The specific adjustments are shown in Table 9.

[0069] Comparative Example 8 Comparative Example 8: Based on the preparation method of Example 24, the stirring rate when adding ginkgo flavonoids was adjusted. The specific adjustments are shown in Table 9.

[0070] The water-based LED light-curing anti-fouling and anti-fingerprint coatings of Examples 24-26 and Comparative Example 8 were subjected to the above performance tests. The test results are shown in Table 9.

[0071] Table 9 Stirring rate and performance test table of Example 1, Examples 24-26 and Comparative Example 8 Item Example 1 Example 24 Example 25 Example 26 Comparative Example 8 Stirring rate / rpm 700 400 300 500 200 Erasing times / each 572 586 576 582 568 Maximum wearing times / each 1703 1731 1711 1725 1697 Referring to Table 9, it can be seen from the comparison of Example 1, Examples 24-26 and Comparative Example 8 that as the stirring rate during the addition of ginkgo flavonoids continues to increase, the number of erasable times and the maximum number of wear times both show a trend of first increasing and then decreasing. This may be because as the stirring rate during the addition continues to increase, ginkgo flavonoids can be quickly and evenly dispersed into the coating, thereby increasing the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating; when the stirring rate during the addition of ginkgo flavonoids exceeds a certain range, it may cause splashing and local concentration of ginkgo flavonoids during the addition process, thereby reducing the stain resistance and wear resistance of the water-based LED light-cured stain-resistant and fingerprint-resistant coating.

[0072] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A water-based LED light-curing anti-fouling and anti-fingerprint coating, characterized in that: The invention comprises the following components in parts by weight: 20-30 parts of a water-based organosilicon-modified resin, 40-60 parts of a water-based polyurethane resin, 10-20 parts of a water-based acrylic resin, 8-15 parts of a water-based fluororesin, 5-10 parts of a UV monomer, 4-12 parts of a photoinitiator, 8-15 parts of deionized water, and 0.3-2 parts of a water-based thickener; the photoinitiator comprises at least one of ginkgo flavonoids, hesperidin, and soy isoflavones.

2. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 1, characterized in that: The UV monomer includes at least one of methyl acrylate, acryloylmorpholine and methyl methacrylate.

3. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 2, characterized in that: The mass ratio of the ginkgo flavonoids to the UV monomer is (4-7):

8.

4. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 2, characterized in that: The mass ratio of the hesperidin to the UV monomer is (6-10):

8.

5. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 2, characterized in that: The mass ratio of the soy isoflavones to the UV monomer is (8-12):

8.

6. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 1, characterized in that: The invention also includes a pH regulator, which includes at least one of triethylamine, triethanolamine and sodium hydroxide.

7. The water-based LED light-curing anti-fouling and anti-fingerprint coating according to claim 6, characterized in that: The weight portion of the pH regulator is 0.1-0.3 parts.

8. The method for preparing the water-based LED light-curable anti-fouling and anti-fingerprint coating according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Add water-based organosilicon modified resin, water-based polyurethane resin, water-based acrylic resin, and water-based fluororesin into a mixing container in sequence according to the formula amount and stir them evenly to obtain a matrix mixture; Step 2: adding the UV monomer to the matrix mixture according to the formula amount and stirring evenly to obtain a second mixture; Step 3: adding a pH regulator according to the formula amount to the second mixture and stirring evenly to obtain a third mixture; Step 4: adding the photoinitiator to the third mixture according to the formula amount and stirring evenly to obtain a fourth mixture; Step 5: adding deionized water and other additives according to the formula amount to the fourth mixture and stirring evenly to obtain a fifth mixture; Step 6: Add the water-based thickener to the fifth mixture according to the formula amount and stir evenly to obtain a water-based LED light-curable anti-fouling and anti-fingerprint coating.

9. The method for preparing the water-based LED light-curable anti-fouling and anti-fingerprint coating according to claim 8, characterized in that: In step 4, after adding the photoinitiator, the stirring rate is 600-800 rpm.

10. The method for preparing the water-based LED light-curable anti-fouling and anti-fingerprint coating according to claim 9, characterized in that: In step 4, the stirring rate is 300-500 rpm when the photoinitiator is added.

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