Water-based anti-fouling easy-to-clean coating

Abstract

The invention discloses a water-based anti-fouling easy-to-clean coating, and relates to the technical field of anti-fouling coatings, and the easy-to-clean coating is prepared from the following materials in parts: 40-100 parts of an acrylic emulsion, 20-120 parts of a polyurethane emulsion, 10-110 parts of a fluorocarbon compound, 1-50 parts of a leveling agent, 1-40 parts of a defoaming agent, 20-220 parts of nano titanium dioxide, 5-130 parts of fluorocarbon resin, 8-60 parts of tin powder, 6-50 parts of a thickening agent and 20-300 parts of water. The preparation method of the water-based anti-fouling easy-to-clean coating comprises the following steps: pouring the acrylic emulsion, the polyurethane emulsion, the fluorocarbon, the nano titanium dioxide, the fluorocarbon resin and the tin powder into a reaction kettle, and stirring and mixing. The nano titanium dioxide, the fluorocarbon resin, the tin powder and the fluorocarbon are added into basic materials, the corrosion resistance and the pollution resistance of the coating can be effectively improved, the outer surface of the container is coated with the coating to protect the container, cleaning is rapid, the cleaning cost is reduced, and the environment is protected.

Description

Technical Field

[0001] The invention relates to the technical field of anti-fouling coatings, and in particular to a water-based anti-fouling easy-to-clean coating. Background Art

[0002] Since containers are stored and transported outdoors and are large in size, cleaning them requires a huge amount of water and labor costs, including huge investments in automatic cleaning equipment, as well as environmental pollution and sewage treatment issues. Current container cleaning methods include: chemical cleaning, using alkali, acid, neutral, and organic solvents containing chemical ingredients to clean containers. Although this method can effectively clean oil stains, it is dangerous to operate, affects the health of maintenance personnel, and has poor safety; high-pressure water cleaning, maintenance personnel enter the container and use high-pressure water for cleaning. This method is greatly affected by human factors, the cleaning effect is not ideal, and the temperature inside the container is high in summer, which may pose a risk to personnel health; steam cleaning, using high-temperature means for degreasing and disinfection, is suitable for containers that require disinfection, degreasing, and deodorization, but the efficiency is low, and the temperature needs to be controlled to avoid damaging the container;

[0003] Containers are mainly water-based and can be rinsed clean with clean water after three months of actual use. However, they are difficult to clean after one or two months of normal use in an actual environment. The container throughput involved is huge, and the use of cleaning agents has a great impact on the environment and is very costly. In this regard, we have proposed a water-based anti-fouling and easy-to-clean coating. Summary of the invention

[0004] In order to solve the above technical problems, a water-based anti-fouling and easy-to-clean coating is provided. This technical solution solves the above problems of being difficult to clean, having a great impact on the environment using cleaning agents, and being costly.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a water-based anti-fouling easy-to-clean coating, the easy-to-clean coating is prepared from the following materials: 40-100 parts of acrylic emulsion, 20-120 parts of polyurethane emulsion, 10-110 parts of fluorocarbon compound, 1-50 parts of leveling agent, 1-40 parts of defoaming agent, 20-220 parts of nano titanium dioxide, 5-130 parts of fluorocarbon resin, 8-60 parts of tin powder, 6-50 parts of thickener and 20-300 parts of water;

[0006] The preparation steps of the water-based anti-fouling and easy-to-clean coating are as follows:

[0007] S1, pouring acrylic emulsion, polyurethane emulsion, fluorocarbon compound, nano titanium dioxide, fluorocarbon resin and tin powder into a reaction kettle, stirring and mixing;

[0008] S2. During the stirring process, a leveling agent, a defoaming agent, a thickener and water are added into the reactor and stirred;

[0009] S3. Check the pH value of the coating, adjust the pH value, and check whether the coating is prepared based on image recognition technology;

[0010] S4. Spray the prepared coating onto the outer surface of the container to protect the outer surface of the container.

[0011] Preferably, the easy-to-clean coating is prepared from the following materials: 50 parts of acrylic emulsion, 60 parts of polyurethane emulsion, 45 parts of fluorocarbon compound, 12 parts of leveling agent, 15 parts of defoaming agent, 30 parts of nano titanium dioxide, 35 parts of fluorocarbon resin, 10 parts of tin powder, 9 parts of thickener and 150 parts of water.

[0012] Preferably, the acrylic emulsion is one of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion. The acrylic emulsion is prepared by adding acrylic monomer, emulsifier and water into a pre-emulsification kettle, stirring for 30-40 minutes to form a pre-emulsion, subjecting the pre-emulsion to polymerization, waiting for the reaction to end, lowering the temperature to 25-35°C, adding a defoaming agent, and filtering to obtain the acrylic emulsion.

[0013] Preferably, the fluorocarbon compound is one or more of perfluoroalkylethyl acrylate, perfluorooctane sulfonyl fluoride and perfluorooctanoic acid; the leveling agent is one or more of acrylate leveling agent, silicone leveling agent and fluorocarbon leveling agent; the defoaming agent is one or more of silicone defoaming agent, polyether defoaming agent and mineral oil defoaming agent.

[0014] Preferably, the particle size of nano titanium dioxide is 10-100 nm, and the thickener is one or more of hydroxyethyl cellulose, sodium polyacrylate or polyurethane thickener.

[0015] Preferably, the polyurethane emulsion is one or more of anionic polyurethane emulsion, cationic polyurethane emulsion and nonionic polyurethane emulsion.

[0016] Preferably, the stirring time in step S1 is 1 hour, and the addition in step S2 is carried out under stirring. After the reactor is stirred for 40 minutes, a leveling agent is added into the reactor. After the reactor is stirred for 45 minutes, a defoaming agent is added into the reactor. After the reactor is stirred for 50 minutes, a thickener is added into the reactor. After the reactor is stirred for 20 minutes, water is added into the reactor.

[0017] Preferably, in step S3, the pH value is adjusted to 8-9. In this step, a high-resolution camera can be used to capture an image of the coating surface, and then the image can be processed by an image recognition algorithm. A convolutional neural network algorithm in deep learning is used to train a model to identify sag, orange peel, shrinkage, and bubble defects on the coating surface. By learning from coating image samples marked with defect types and without defects, image features are automatically extracted and classified. The captured coating image is input into the trained model to quickly determine whether there are defects on the coating surface, the type and severity of the defects, and whether the coating is prepared.

[0018] Preferably, after spraying is completed in step S4, natural air drying is carried out to wait for the coating to dry and take shape.

[0019] Preferably, the method further comprises step S5 of testing the container coated with the anti-fouling and easy-to-clean coating to detect the anti-fouling performance, cleaning performance and anti-corrosion performance of the coating.

[0020] Preferably, in step S5, the anti-fouling performance test simulates the dust, oil and chemical stain pollutant environment, observes and quantifies the state changes of the coating surface after the pollutants attach, so as to evaluate the anti-fouling ability of the coating; the cleaning performance test adopts a variety of cleaning methods to clean the coating, measures the amount of water used in the cleaning process, evaluates the residual degree after cleaning, and comprehensively judges the cleaning performance of the coating; the corrosion resistance test adopts a salt spray test box to test.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention can effectively increase the corrosion resistance and anti-fouling performance of the coating by adding nano titanium dioxide, fluorocarbon resin, tin powder and fluorocarbon compounds into the basic material, and is applied on the outer surface of the container to protect the container, quickly clean it, reduce the cleaning cost and protect the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a flow chart of the preparation steps. DETAILED DESCRIPTION

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0025] Reference Figure 1As shown, a water-based anti-fouling easy-to-clean coating is prepared from the following materials: 40-100 parts of acrylic emulsion, 20-120 parts of polyurethane emulsion, 10-110 parts of fluorocarbon compound, 1-50 parts of leveling agent, 1-40 parts of defoaming agent, 20-220 parts of nano titanium dioxide, 5-130 parts of fluorocarbon resin, 8-60 parts of tin powder, 6-50 parts of thickener and 20-300 parts of water;

[0026] The preparation steps of the water-based anti-fouling and easy-to-clean coating are as follows:

[0027] S1, pouring acrylic emulsion, polyurethane emulsion, fluorocarbon compound, nano titanium dioxide, fluorocarbon resin and tin powder into a reaction kettle, stirring and mixing;

[0028] S2. During the stirring process, a leveling agent, a defoaming agent, a thickener and water are added into the reactor and stirred;

[0029] S3. Check the pH value of the coating, adjust the pH value to 8-9, and check whether the coating is prepared based on image recognition technology;

[0030] S4. Spraying the prepared coating onto the outer surface of the container to protect the outer surface of the container;

[0031] S5. Test containers coated with anti-fouling and easy-to-clean coatings to detect the coating's anti-fouling, cleaning and anti-corrosion properties.

[0032] The easy-to-clean coating is specifically prepared from the following materials: 50 parts of acrylic emulsion, 60 parts of polyurethane emulsion, 45 parts of fluorocarbon compound, 12 parts of leveling agent, 15 parts of defoaming agent, 30 parts of nano titanium dioxide, 35 parts of fluorocarbon resin, 10 parts of tin powder, 9 parts of thickener and 150 parts of water.

[0033] Acrylic emulsion can form a continuous film after drying, and has good adhesion to the surface of the container being coated. It can fill the tiny pores on the surface and closely bond with the substrate, providing basic adhesion guarantee for the entire coating system, preventing the coating from falling off or peeling off, and ensuring long-term stability during container transportation and use;

[0034] The coating film formed by polyurethane emulsion has high hardness and good wear resistance. During the frequent handling, loading and unloading of containers, when they rub and collide with other objects, they can effectively resist wear, reduce scratches and damage on the coating surface, extend the service life of the coating, and maintain the good condition of the container appearance;

[0035] Fluorocarbon compounds have extremely low surface energy, which makes the coating surface highly hydrophobic and oleophobic. Dust, oil and stains are difficult to adhere to the surface. Even if there is a small amount of stain, it can be easily removed by rain or simple wiping, which greatly reduces the difficulty of cleaning the container surface, reduces cleaning costs and maintenance workload, and keeps the appearance of the container clean and beautiful.

[0036] The leveling agent can reduce the surface tension of the coating, so that the coating can quickly flow and spread evenly after being sprayed on the container surface, eliminating the orange peel and shrinkage defects that may appear on the coating surface, and forming a smooth and flat coating surface, which not only improves the aesthetics of the coating, but also helps to improve the gloss and reflectivity of the coating, making the container surface brighter and more beautiful, and enhancing its appearance and decorativeness;

[0037] Nano-titanium dioxide has photocatalytic activity and can produce strong oxidizing free radicals under ultraviolet irradiation. These free radicals can decompose organic pollutants attached to the surface of the coating, such as oil stains and microorganisms, and convert them into harmless water and carbon dioxide substances. This feature makes the container coating have a self-cleaning function. Even in the long-term use process, it can keep the surface relatively clean, reduce the frequency and intensity of manual cleaning, and help maintain the anti-fouling performance and appearance quality of the coating;

[0038] Fluorocarbon resin itself has excellent weather resistance and chemical stability. It works synergistically with fluorocarbon compounds to provide long-term outdoor protection for containers. It can maintain the stability of the coating performance under harsh climatic conditions and complex chemical environments, prevent the coating from fading, powdering, and peeling due to long-term exposure, and ensure that the container always maintains a good protective state during the many years of use.

[0039] The electrode potential of tin is more negative than that of the steel substrate commonly used in containers. When the coating is locally damaged and the substrate is exposed to a corrosive environment, the tin powder will be corroded preferentially as a sacrificial anode, thereby protecting the steel substrate from further corrosion.

[0040] Acrylic emulsion is one of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion. The preparation of acrylic emulsion is through adding acrylic monomer, emulsifier and water into pre-emulsification kettle, stirring for 30-40 minutes to form pre-emulsion, polymerizing the pre-emulsion, waiting for the reaction to end, lowering the temperature to 25-35 ℃, adding defoaming agent, filtering to obtain acrylic emulsion.

[0041] The present application forms a pre-emulsion by first stirring acrylic monomer, emulsifier and water in a pre-emulsification kettle, so that the monomer can be evenly dispersed in water to form stable tiny droplets, which is conducive to the uniformity and stability of the subsequent polymerization reaction, reduces the problems of incomplete polymerization reaction and inconsistent product performance caused by uneven monomer distribution, improves the quality and batch stability of the emulsion, and provides reliable process guarantee for large-scale production.

[0042] The fluorocarbon compound is one or more of perfluoroalkylethyl acrylate, perfluorooctane sulfonyl fluoride and perfluorooctanoic acid; the leveling agent is one or more of acrylate leveling agent, silicone leveling agent and fluorocarbon leveling agent; the defoaming agent is one or more of silicone defoaming agent, polyether defoaming agent and mineral oil defoaming agent.

[0043] The particle size of nano titanium dioxide is 10-100nm, and the thickener is one or more of hydroxyethyl cellulose, sodium polyacrylate or polyurethane thickener.

[0044] The nano titanium dioxide particles in this application can fill the tiny pores in the coating within this particle size range, thereby enhancing the density of the coating. When the nano titanium dioxide is evenly dispersed in the coating, they are like tiny "fillers", making the structure of the coating tighter, thereby improving the hardness and wear resistance of the coating.

[0045] The polyurethane emulsion is one or more of anionic polyurethane emulsion, cationic polyurethane emulsion and nonionic polyurethane emulsion.

[0046] The stirring time in step S1 is 1 hour. In step S2, the addition is carried out under stirring. After the reactor is stirred for 40 minutes, a leveling agent is added into the reactor. After the reactor is stirred for 45 minutes, a defoaming agent is added into the reactor. After the reactor is stirred for 50 minutes, a thickener is added into the reactor. After the reactor is stirred for 20 minutes, water is added into the reactor.

[0047] In step S3, a high-resolution camera is used to capture an image of the paint surface. The image is then processed using an existing image recognition algorithm, particularly a convolutional neural network algorithm in deep learning. A model is trained to identify sag, orange peel, shrinkage, and bubble defects on the paint surface. Image samples with and without defects are studied to automatically extract image features and classify them. The captured paint image is input into the trained model to quickly determine whether there are defects on the paint surface, the type and severity of the defects, and whether the paint preparation is complete.

[0048] After the spraying is completed in step S4, it is allowed to dry naturally and wait for the paint to dry and take shape.

[0049] The anti-fouling performance test in step S5 simulates the dust, oil and chemical stain pollutant environment, observes and quantifies the changes in the state of the coating surface after the pollutants attach, so as to evaluate the anti-fouling ability of the coating; the cleaning performance test uses a variety of cleaning methods to clean the coating, measures the amount of water used in the cleaning process, evaluates the degree of residue after cleaning, and comprehensively judges the cleaning performance of the coating; the anti-corrosion test uses a salt spray test chamber to conduct a salt spray test.

[0050] Example 1

[0051] A water-based anti-fouling and easy-to-clean coating, the preparation steps of the water-based anti-fouling and easy-to-clean coating are:

[0052] S1. Prepare the following materials: 50 parts of acrylic emulsion, 60 parts of polyurethane emulsion, 45 parts of fluorocarbon compound, 12 parts of leveling agent, 15 parts of defoamer, 30 parts of nano titanium dioxide, 35 parts of fluorocarbon resin, 10 parts of tin powder, 9 parts of thickener and 150 parts of water; pour the acrylic emulsion, polyurethane emulsion, fluorocarbon compound, nano titanium dioxide, fluorocarbon resin and tin powder into a reactor and stir and mix;

[0053] S2. During the stirring process, a leveling agent, a defoaming agent, a thickener and water are added into the reactor and stirred;

[0054] S3. Check the pH value of the coating, adjust the pH value, and check whether the coating is prepared based on image recognition technology;

[0055] S4. Spraying the prepared coating onto the outer surface of the container to protect the outer surface of the container;

[0056] S5. Test containers coated with anti-fouling and easy-to-clean coatings to detect the coating's anti-fouling, cleaning and anti-corrosion properties.

[0057] Example 2

[0058] A water-based anti-fouling and easy-to-clean coating, the preparation steps of the water-based anti-fouling and easy-to-clean coating are:

[0059] S1. Prepare the following materials: 60 parts of acrylic emulsion, 70 parts of polyurethane emulsion, 55 parts of fluorocarbon compound, 10 parts of leveling agent, 20 parts of defoamer, 50 parts of nano titanium dioxide, 25 parts of fluorocarbon resin, 8 parts of tin powder, 10 parts of thickener and 100 parts of water; pour the acrylic emulsion, polyurethane emulsion, fluorocarbon compound, nano titanium dioxide, fluorocarbon resin and tin powder into a reactor and stir and mix;

[0060] S2. During the stirring process, a leveling agent, a defoaming agent, a thickener and water are added into the reactor and stirred;

[0061] S3. Check the pH value of the coating, adjust the pH value, and check whether the coating is prepared based on image recognition technology;

[0062] S4. Spraying the prepared coating onto the outer surface of the container to protect the outer surface of the container;

[0063] S5. Test containers coated with anti-fouling and easy-to-clean coatings to detect the coating's anti-fouling, cleaning and anti-corrosion properties.

[0064] Comparative Example 1

[0065] The anti-fouling and easy-to-clean coating is prepared in the following steps:

[0066] A1. Treat the container substrate surface to improve the adhesion of the coating;

[0067] A2, applying a primer on the surface of the substrate, and according to the formula of the anti-fouling coating, mixing the fluorocarbon compound, the silicone material and the acrylate material evenly to prepare an anti-fouling coating;

[0068] A3. The prepared anti-fouling coating is evenly coated on the surface of the substrate and the coating is cured.

[0069] The following table is a table of cleaning effects of different embodiments and comparative examples.

[0070] Table 1

[0071] Group Antifouling performance Cleaning performance Anti-corrosion properties Example 1 Excellent convenient Excellent Example 2 Excellent convenient Excellent Comparative Example 1 Excellent Strenuous ordinary

[0072] Anti-fouling performance and cleaning performance testing

[0073] Test equipment and materials

[0074] High-pressure cleaning equipment: including high-pressure water guns, high-pressure water pumps and connecting pipes, which can provide adjustable high-pressure water flow with a pressure range of 5-20MPa to wash away dust particles on the coating surface;

[0075] Flushing water metering device: such as flow meter, installed in the water path of high-pressure cleaning equipment, used to accurately measure the water consumption during the flushing process, so as to compare the cleaning effects of different coatings under the same water consumption;

[0076] Cleanliness assessment template: Make samples with different pollution degree standards, such as dust-covered samples from light pollution to heavy pollution, to compare and evaluate the cleanliness of the coating after cleaning. It can be made of metal plates or plastic plates, with the same material as the container coating sprayed on the surface, and different levels of samples are made according to the predetermined dust adhesion standards;

[0077] Image acquisition equipment: high-definition digital camera or video camera, used to take images of the coating surface before and after cleaning, so as to visually observe the cleaning effect and perform image analysis;

[0078] Test steps:

[0079] A certain amount of dust particles are evenly attached to the container coating surface, and then the coating surface is rinsed with high-pressure cleaning equipment. During the rinsing process, the vertical distance between the high-pressure water gun and the coating surface is kept between 20-30cm, and the rinsing water volume is recorded at the same time;

[0080] After flushing is completed, use an image acquisition device to immediately capture an image of the coating surface and compare it with the cleanliness assessment template to evaluate the cleanliness of the coating surface. Use image analysis software to process the captured image, calculate the coverage area ratio of residual dust particles on the coating surface, and compare it with the dust adhesion before cleaning to obtain the dust removal rate. By comparing the dust removal rate, cleanliness and flushing water volume indicators of different coatings under the same test conditions, the dust cleaning performance of the coating is evaluated.

[0081] Corrosion resistance test

[0082] Test equipment and materials:

[0083] Salt spray test chamber: It can produce a salt spray environment that meets the standards. The concentration, temperature, humidity and spray parameters of the salt spray can be adjusted. The volume of the salt spray chamber should be able to accommodate the container coating test sample, and the internal spray uniformity should be good;

[0084] Salt spray solution: Prepare the salt spray solution according to the standard, using sodium chloride solution with a concentration of 5±1%, and using deionized water or distilled water to ensure the purity of the solution and avoid the influence of impurities on the test results;

[0085] Corrosion rating standard sample: The corrosion rating sample in the ASTM B117 standard is used to compare and evaluate the corrosion degree of container coatings after salt spray testing. The sample has standard patterns and instructions with different corrosion degrees. The corrosion level of the coating is determined by comparing it with the corrosion conditions of the test sample;

[0086] Microscope and image analysis software: used to observe the microscopic corrosion morphology of the coating surface after the salt spray test, such as the size, depth, and density of the corrosion pits, and to conduct quantitative analysis through image analysis software. The microscope can be a scanning electron microscope or an optical microscope;

[0087] Test steps:

[0088] The container coating test sample is cut into a suitable size, and the edges of the sample are sealed with salt spray resistant protective coating. After the sample is cleaned and dried, it is placed on the sample rack in the salt spray test chamber, and the parameters of the salt spray test chamber are set. The spray method adopts continuous spray. During the salt spray test, the spray conditions in the salt spray test chamber and the status of the sample are regularly observed to ensure the normal progress of the test. After the test, the sample is taken out, and the salt spray deposits on the surface are gently rinsed with clean water, and then wiped dry with a soft cloth. The corrosion condition of the sample surface is observed and compared with the corrosion rating standard sample to determine the corrosion grade of the coating. The corrosion pits on the coating surface are observed with a microscope, and images are taken and the size, depth, and density parameters of the corrosion pits are analyzed using image analysis software to evaluate the coating's resistance to salt spray corrosion.

[0089] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A water-based anti-fouling and easy-to-clean coating, characterized in that: The easy-to-clean coating is prepared from the following materials: 40-100 parts of acrylic emulsion, 20-120 parts of polyurethane emulsion, 10-110 parts of fluorocarbon compound, 1-50 parts of leveling agent, 1-40 parts of defoaming agent, 20-220 parts of nano titanium dioxide, 5-130 parts of fluorocarbon resin, 8-60 parts of tin powder, 6-50 parts of thickener and 20-300 parts of water; The preparation steps of the water-based anti-fouling and easy-to-clean coating are as follows: S1, pouring acrylic emulsion, polyurethane emulsion, fluorocarbon compound, nano titanium dioxide, fluorocarbon resin and tin powder into a reaction kettle, stirring and mixing; S2. During the stirring process, a leveling agent, a defoaming agent, a thickener and water are added into the reactor and stirred; S3. Check the pH value of the coating, adjust the pH value, and check whether the coating is prepared based on image recognition technology; S4. Spray the prepared coating onto the outer surface of the container to protect the outer surface of the container.

2. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: The easy-to-clean coating is specifically prepared from the following materials: 50 parts of acrylic emulsion, 60 parts of polyurethane emulsion, 45 parts of fluorocarbon compound, 12 parts of leveling agent, 15 parts of defoaming agent, 30 parts of nano titanium dioxide, 35 parts of fluorocarbon resin, 10 parts of tin powder, 9 parts of thickener and 150 parts of water.

3. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: Acrylic emulsion is one of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion. The preparation of acrylic emulsion is through adding acrylic monomer, emulsifier and water into pre-emulsification kettle, stirring for 30-40 minutes to form pre-emulsion, polymerizing the pre-emulsion, waiting for the reaction to end, lowering the temperature to 25-35 ℃, adding defoamer, filtering to obtain acrylic emulsion.

4. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: The fluorocarbon compound is one or more of perfluoroalkylethyl acrylate, perfluorooctane sulfonyl fluoride and perfluorooctanoic acid; the leveling agent is one or more of acrylate leveling agent, silicone leveling agent and fluorocarbon leveling agent; the defoaming agent is one or more of silicone defoaming agent, polyether defoaming agent and mineral oil defoaming agent.

5. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: The particle size of nano titanium dioxide is 10-100nm, and the thickener is one or more of hydroxyethyl cellulose, sodium polyacrylate or polyurethane thickener.

6. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: The polyurethane emulsion is one or more of anionic polyurethane emulsion, cationic polyurethane emulsion and nonionic polyurethane emulsion.

7. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: The stirring time in step S1 is 1 hour. In step S2, the addition is carried out under stirring. After the reactor is stirred for 40 minutes, a leveling agent is added into the reactor. After the reactor is stirred for 45 minutes, a defoaming agent is added into the reactor. After the reactor is stirred for 50 minutes, a thickener is added into the reactor. After the reactor is stirred for 20 minutes, water is added into the reactor.

8. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: In step S3, a high-resolution camera is used to capture an image of the paint surface. The image is then processed using an image recognition algorithm. A convolutional neural network algorithm in deep learning is used to train a model to identify sag, orange peel, shrinkage, and bubble defects on the paint surface. By learning from paint image samples that are labeled with defect types and those without defects, image features are automatically extracted and classified. The captured paint image is input into the trained model to quickly determine whether there are defects on the paint surface, the type and severity of the defects, and whether the paint preparation is complete.

9. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: After spraying is completed in step S4, it is allowed to dry naturally and wait for the paint to dry and take shape.

10. The water-based anti-fouling and easy-to-clean coating according to claim 1, characterized in that: It also includes S5, testing containers coated with anti-fouling and easy-to-clean coatings to detect the anti-fouling performance, cleaning performance and anti-corrosion performance of the coatings; in step S5, the anti-fouling performance test simulates dust, oil and chemical stain pollutant environments, observes and quantifies the changes in the state of the coating surface after the attachment of pollutants, so as to evaluate the anti-fouling ability of the coating; The cleaning performance test involves cleaning the coating using a variety of cleaning methods, measuring the amount of water used during the cleaning process, evaluating the degree of residue after cleaning, and comprehensively judging the cleaning performance of the coating; the corrosion resistance test uses a salt spray test chamber to conduct a salt spray test.

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