A yellowing-resistant high-glossiness artistic paint

Abstract

The application provides a yellowing-resistant high-gloss artistic paint, which comprises the following raw materials in parts by weight: 50-70 parts of a benzyl acrylate emulsion, 5-10 parts of hollow titanium dioxide loaded benzyl acrylate triazole particles, 5-10 parts of zinc oxide nanoparticles, and 5-10 parts of a cosolvent; the cosolvent comprises at least one of propylene glycol methyl ether, ethylene glycol butyl ether and dipropylene glycol methyl ether. The paint adopts reasonable formula, adopts nanoparticles with good ultraviolet absorption capacity and high-temperature resistance, and uses a suitable cosolvent, so that the coating formed by the paint has excellent yellowing resistance and high gloss.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coatings, and particularly relates to a yellowing-resistant high-gloss artistic coating. BACKGROUND

[0002] In today's home decoration market, artistic coatings are becoming a new choice, bringing more unique aesthetics and visual enjoyment to homes. This creative and personalized decoration method not only meets people's pursuit of beauty, but also makes home space more distinctive.

[0003] Currently, artistic coatings are mainly based on acrylic resin, which generally has problems such as low gloss and poor yellowing resistance. The gloss of artistic coatings is the main manifestation of its decorative effect. Gloss is a surface property related to light reflection, including mirror gloss, sheen gloss, contrast gloss, haze gloss, image clarity gloss (freshness), and surface flatness gloss. The gloss we usually refer to is the mirror gloss, which is considered to be the proportion of reflected incident light at the mirror reflection angle of the average plane of the surface, which can be measured by a gloss meter. In addition, for artistic coatings, once yellowing occurs, the overall appearance will decrease a lot, which seriously affects the visual experience. And one of the important reasons for the yellowing of coatings is the poor resistance to ultraviolet radiation and high temperature. Under long-term ultraviolet radiation or high temperature, the unsaturated structure in the coating changes, oxidizes, or even chemical bonds break, causing the coating to turn yellow.

[0004] Therefore, as people's requirements for the product quality and decoration degree of artistic coatings are getting higher and higher, the requirements for the gloss and yellowing resistance of artistic coatings are also getting higher and higher. How to improve the above problems is a problem to be solved in the current artistic coatings. SUMMARY

[0005] To solve the problems and deficiencies in the prior art, the present application provides a yellowing-resistant high-gloss artistic coating. The coating uses reasonably matched nano particles with good ultraviolet absorption capacity and high temperature resistance, and uses a suitable cosolvent to make the coating formed by the coating have excellent yellowing resistance and high gloss.

[0006] The present application provides a yellowing-resistant high-gloss artistic coating, which comprises the following raw materials in parts by weight: 50-70 parts of benzene propylene emulsion, 5-10 parts of hollow titanium dioxide loaded benzene propylene triazole particles, 5-10 parts of zinc oxide nanoparticles, and 5-10 parts of a cosolvent. The cosolvent comprises at least one of propylene glycol methyl ether, ethylene glycol butyl ether, and dipropylene glycol methyl ether.

[0007] Firstly, the base resin used in the present application is a styrene-acrylic emulsion, which has the advantages of weather resistance and good gloss, and is a water-based resin with low toxicity and little odor. The styrene in the styrene-acrylic emulsion contains aniline, and the benzene ring contains conjugated structures, which can increase the refractive index of the resin, thus increasing the gloss of the prepared coating. At the same time, the rigidity of the benzene ring structure is strong, which is also beneficial to improve the weather resistance of the coating and slow down the yellowing speed.

[0008] Secondly, hollow titanium dioxide loaded benzotriazole particles and zinc oxide nanoparticles are introduced into the coating in the present application to further improve the yellowing resistance of the coating. The hollow titanium dioxide loaded benzotriazole particles have good ultraviolet absorption performance. Specifically, firstly, benzotriazole is a good ultraviolet absorber, and the benzotriazole is loaded on the hollow titanium dioxide particles, which can slowly release benzotriazole, so that the coating can absorb ultraviolet light for a long time, and the yellowing resistance of the coating is improved. Secondly, titanium dioxide itself has a certain ultraviolet absorption performance, and it can produce a synergistic effect with benzotriazole, which can ensure that the coating has good ultraviolet absorption ability at the beginning, and can also ensure that the coating can resist ultraviolet light for a long time, and optimize the yellowing resistance of the coating. Moreover, the zinc oxide nanoparticles can further interact with the hollow titanium dioxide loaded benzotriazole particles to cover a larger wavelength range of ultraviolet light absorption, further improving the yellowing resistance of the coating. At the same time, the two kinds of particles are inorganic particles with strong high-temperature resistance, and they still maintain good structural stability at high temperatures, so the coating can maintain good stability at high temperatures and is not prone to yellowing.

[0009] The addition of hollow titanium dioxide loaded benzotriazole and zinc oxide nanoparticles does not affect the gloss of the original styrene-acrylic emulsion, and can also play a surface filling and smoothing role in the coating, improving the gloss of the coating. Moreover, the two kinds of particles are white particles, which can be well colored in artistic coatings without affecting the coloring effect of colored pigments, while maintaining the original gloss, optimizing the gloss of the artistic coatings.

[0010] Furthermore, an alcohol ether cosolvent is added in the present application, which has a boiling point higher than 100 DEG C and lower than 200 DEG C. In normal temperature curing, it neither volatilizes too fast to fully dissolve the polymer chain segment, which is beneficial to the leveling of the coating, making the coating smooth and improving the gloss and hardness of the coating, nor volatilizes too slowly to reduce the drying speed of the coating. At the same time, if the drying speed of the coating is too slow, it is not conducive to form a solid coating in a short time, which is not conducive to actual construction, because in the actual construction process, it is often necessary to add several layers of paint, if the previous paint is not completely dry, and the second paint is brushed, the topcoat is dry and the primer cannot be solidified, making the coating soft and not dry for a long time, which deteriorates the hardness of the coating and causes the coating to crack easily.

[0011] Preferably, the styrene-acrylic emulsion is obtained by copolymerization of styrene monomer and acrylic ester monomer, and the mass of the styrene monomer accounts for 5-10% of all monomers. Controlling the amount of styrene monomer is conducive to ensuring that the coating has high gloss and yellowing resistance. The reason is that if the content of styrene monomer is too low, the content of benzene ring in the resin chain is too low, and the conjugated structure in the benzene ring cannot effectively increase the refractive index of the resin, that is, the gloss of the coating cannot be effectively improved. At the same time, the content of the rigid structure of the benzene ring is also not conducive to the improvement of the weather resistance of the coating, which reduces the yellowing resistance of the coating. If the content of styrene monomer is too high, the polymer chain segment has more benzene rings, which increases the steric hindrance, the inner phase volume of the dispersion particles formed after water is added is large, the particle size of the dispersion resin increases, and then the gloss and stability are affected.

[0012] Preferably, the particle size of the hollow titanium dioxide loaded benzene-acrylic triazole particles is 100-200 nm, and the particle size of the zinc oxide nanoparticles is 200-300 nm. Within the above particle size range, the two kinds of particles can well play the effect of nanometer size, and have excellent effect on improving the gloss and ultraviolet absorption performance of the coating. At the same time, within the above particle size range, the particle size of the two kinds of particles is not too small, and is not easy to agglomerate, so that the two kinds of particles can be well dispersed in the coating to ensure the stability of the coating. Controlling the particle size of the zinc oxide nanoparticles to be slightly larger than that of the hollow titanium dioxide loaded benzene-acrylic triazole particles is conducive to the close arrangement of the two kinds of particles and the strengthening of the tightness of the coating, thereby further optimizing the weather resistance of the coating and slowing down the yellowing resistance speed of the coating. At the same time, the particles with the above particle size belong to the nanometer level, which is conducive to uniform dispersion in the gap between the resin particles, and the coating formed has no obvious particle feeling, the surface is smooth and has high gloss.

[0013] Preferably, the cosolvent is a compound solvent of propylene glycol methyl ether and dipropylene glycol methyl ether. The use of the two cosolvents is more conducive to the leveling of the coating during the drying process, and is conducive to the gloss and stability of the coating. This may be because the boiling point of propylene glycol methyl ether is relatively low, and the boiling point of dipropylene glycol methyl ether is relatively high. When the two are used together, the polymer chain segment can be more fully dissolved and the evaporation speed is moderate, so that the coating is smooth and has good gloss. At the same time, the use of the mixed solvent of the two can also ensure the fast drying speed of the coating.

[0014] Preferably, the volume ratio of propylene glycol methyl ether to dipropylene glycol methyl ether is 1-1.5:1.

[0015] Preferably, the preparation method of the hollow titanium dioxide loaded benzene-acrylic triazole particles comprises the following steps:

[0016] S1. Disperse the polystyrene microsphere emulsion uniformly in a first solvent to obtain a first mixture; mix the tetrabutyl titanate with a second solvent uniformly to obtain a second mixture; mix the first mixture with the second mixture, and adjust the pH to 9.5-10.5, then react at 75-85℃ for 5-8 hours, wash and dry to obtain polystyrene / titanium dioxide core-shell microspheres; S2. Calcine the polystyrene / titanium dioxide core-shell microspheres at 600-700℃ for 2-4 hours to obtain hollow titanium dioxide microspheres; S3. Mix the benzotriazole with a third solvent, add the hollow titanium dioxide microspheres thereto, mix for 18-24 hours, wash and dry to obtain hollow titanium dioxide loaded benzotriazole particles. The polystyrene is used as a template to synthesize the hollow titanium dioxide microspheres, which is conducive to controlling the particle size of the hollow titanium dioxide microspheres, and is conducive to ensuring that the hollow titanium dioxide microspheres have a relatively uniform particle size, thereby ensuring that a certain amount of benzotriazole is loaded in the hollow titanium dioxide, ensuring the ultraviolet absorption performance of the coating, and improving the yellowing resistance of the coating.

[0017] Preferably, the first solvent, the second solvent, and the third solvent independently comprise ethanol.

[0018] Preferably, in the polystyrene microsphere emulsion, the particle size of the polystyrene microspheres is 60-140nm.

[0019] Preferably, the yellowing-resistant high-gloss artistic paint further comprises 1-5 parts of color pigments by weight.

[0020] Preferably, the yellowing-resistant high-gloss artistic paint further comprises 10-15 parts of inorganic fillers by weight; the inorganic fillers comprise at least one of mica powder, barium sulfate, feldspar powder, and diatomite.

[0021] Preferably, the particle size of the inorganic fillers is 200-300nm. Ensuring that the inorganic fillers are in a relatively small particle size range can ensure that the coating has no obvious particle feeling, which is conducive to the gloss of the coating.

[0022] Preferably, the yellowing-resistant high-gloss artistic paint further comprises 0.1-1 parts of a pH adjuster, 1-5 parts of a thickening agent, 0.1-0.7 parts of an antifoaming agent, 0.3-1 parts of a wetting agent, 0.5-1.5 parts of a dispersing agent, 0.3-1 parts of a preservative, and 5-10 parts of water.

[0023] Preferably, the pH adjuster comprises at least one of ammonia water, NaOH solution, and AMP95.

[0024] Preferably, the thickening agent comprises at least one of an acrylate thickening agent and a polyurethane thickening agent.

[0025] Preferably, the defoaming agent comprises at least one of mineral oil-based defoaming agent, silicone-based defoaming agent, polyether-based defoaming agent.

[0026] Preferably, the wetting agent comprises at least one of anionic surfactant, non-ionic surfactant.

[0027] Preferably, the dispersant comprises high-molecular polymer-based dispersant.

[0028] Preferably, the high-molecular polymer-based dispersant comprises at least one of maleic anhydride copolymer, polyacrylic acid derivative, polycarboxylate, polyvinylpyrrolidone, polyether derivative, polyethylene glycol.

[0029] Preferably, the preservative comprises carboxin.

[0030] Preferably, the above-mentioned yellowing-resistant high-gloss artistic paint is prepared by the following steps: mixing the styrene-acrylic emulsion, hollow titanium dioxide loaded styrene-acrylic triazole particles, zinc oxide nanoparticles, thickening agent, wetting agent, and water uniformly, then adding inorganic filler, dispersant, defoaming agent, and preservative uniformly, and finally adding in solubilizing agent, pH adjuster, and color pigment uniformly to obtain the yellowing-resistant high-gloss artistic paint. DETAILED DESCRIPTION

[0031] In order to make the personnel in the technical field better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0032] Embodiment 1

[0033] (1) Preparation of hollow titanium dioxide loaded styrene-acrylic triazole particles

[0034] Prepared according to the following steps:

[0035] S1. Disperse the polystyrene microsphere emulsion uniformly in ethanol (polystyrene microsphere emulsion 1.05 g, particle size of microspheres 105 nm, ethanol 100 mL) to obtain a first mixture; mix tetrabutyl titanate with ethanol uniformly to obtain a second mixture (calculated based on 10.5% of tetrabutyl titanate mass fraction, the second mixture is 10 mL); mix the first mixture with the second mixture and adjust the pH to 10, then react at 80°C for 6 hours, wash and dry to obtain polystyrene / titanium dioxide core-shell microspheres;

[0036] S2. Calcine the polystyrene / titanium dioxide core-shell microspheres at 600°C for 3 hours to obtain hollow titanium dioxide microspheres;

[0037] S3. Benzotriazole was mixed with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0038] (2) Preparation of the paint

[0039] The benzotriazole particles were prepared by mixing benzotriazole with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0040] Example 2

[0041] The difference between this example and Example 1 is that, in the preparation of the paint in (2), the benzotriazole particles were prepared by mixing benzotriazole with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0042] Example 3

[0043] The difference between this example and Example 1 is that, in the preparation of the paint in (2), the benzotriazole particles were prepared by mixing benzotriazole with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0044] Example 4

[0045] The difference between this example and Example 1 is that, in the preparation of the paint in (2), the benzotriazole particles were prepared by mixing benzotriazole with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0046] Example 5

[0047] The difference between this example and Example 1 is that, in the preparation of the paint in (2), the benzotriazole particles were prepared by mixing benzotriazole with ethanol (0.55 g benzotriazole, ethanol 50 mL), hollow titanium dioxide microspheres (0.5 g) were added thereto and mixed for 20 hours, and then washed and dried to obtain hollow titanium dioxide loaded benzotriazole particles having a particle size of 150 nm.

[0048] Example 6

[0049] The difference between this example and Example 1 is that in the preparation of the hollow titanium dioxide loaded benzotriazole particles in (1), the particle size of the polystyrene microspheres used is 40 nm, and the particle size of the finally obtained hollow titanium dioxide loaded benzotriazole particles is 80 nm; the rest is consistent with Example 1.

[0050] Example 7

[0051] The difference between this example and Example 1 is that in the preparation of the hollow titanium dioxide loaded benzotriazole particles in (1), the particle size of the polystyrene microspheres used is 185 nm, and the particle size of the finally obtained hollow titanium dioxide loaded benzotriazole particles is 230 nm; the rest is consistent with Example 1.

[0052] Example 8

[0053] The difference between this example and Example 1 is that in the preparation of the coating in (2), the particle size of the zinc oxide nanoparticles used is 400 nm; the rest is consistent with Example 1.

[0054] Example 9

[0055] The difference between this example and Example 1 is that in the preparation of the coating in (2), the co-solvent used is propylene glycol methyl ether; the rest is consistent with Example 1.

[0056] Example 10

[0057] The difference between this example and Example 1 is that in the preparation of the coating in (2), the co-solvent used is ethylene glycol butyl ether; the rest is consistent with Example 1.

[0058] Example 11

[0059] The difference between this example and Example 1 is that in the preparation of the coating in (2), the co-solvent used is dipropylene glycol methyl ether; the rest is consistent with Example 1.

[0060] Example 12

[0061] The difference between this example and Example 1 is that in the preparation of the coating in (2), the co-solvent used is a mixed solvent of ethylene glycol butyl ether and dipropylene glycol methyl ether (volume ratio is 1.2:1); the rest is consistent with Example 1.

[0062] Example 13

[0063] The difference between this example and Example 1 is that in the preparation of the coating in (2), the volume ratio of propylene glycol methyl ether and dipropylene glycol methyl ether in the co-solvent used is 2:1; the rest is consistent with Example 1.

[0064] Example 14

[0065] The embodiment differs from Example 1 in that, in the preparation of the coating in (2), the volume ratio of propylene glycol methyl ether and dipropylene glycol methyl ether in the co-solvent used is 0.5:1; the rest is consistent with Example 1.

[0066] Comparative Example 1

[0067] The comparative example differs from Example 1 in that, in the preparation of the coating in (2), the co-solvent used is isopropanol; the rest is consistent with Example 1.

[0068] Comparative Example 2

[0069] The comparative example differs from Example 1 in that, in the preparation of the coating in (2), the co-solvent used is diethylene glycol butyl ether; the rest is consistent with Example 1.

[0070] Comparative Example 3

[0071] The comparative example differs from Example 1 in that, in the preparation of the coating in (2), the styrene-acrylic emulsion is replaced by a pure acrylic resin emulsion; the rest is consistent with Example 1.

[0072] Comparative Example 4

[0073] The comparative example differs from Example 1 in that, in the preparation of the coating in (2), hollow titanium dioxide loaded benzotriazole particles are not added (i.e. the operation of (1) is also not performed); the rest is consistent with Example 1.

[0074] Comparative Example 5

[0075] The comparative example differs from Example 1 in that, in the preparation of the coating in (2), zinc oxide nanoparticles are not added; the rest is consistent with Example 1.

[0076] Test Example

[0077] 1. Experimental construction method

[0078] The coatings formed after drying the coatings obtained from all the above examples and comparative examples are tested for yellowing resistance, gloss, hardness, adhesion, and impact resistance, and the specific test methods are as follows:

[0079] (1) Yellowing resistance test:

[0080] First, use a color difference meter to test the yellowness value of the coating cured without exposure to strong light and high temperature as the initial value. After experiencing 6h of continuous high temperature 80℃ and ultraviolet light intensity 30mW / cm 2 , then use a color difference meter to measure the yellowness value of all sample coatings, and take the difference between the before and after changes as the yellowing index.

[0081] (2) Gloss test:

[0082] Test according to GB / T 9754-2007, test three different positions on the sample to be tested with a gloss meter and take the average value after repeating the test three times.

[0083] (3) Test according to GB / T 6739-2006, insert the pencil into the test trolley fixing hole, adjust the height of the pencil to make the test trolley in a horizontal position, then fix the pencil, and then place it on the surface of the coating to be tested, push the trolley at a uniform speed, observe whether the coating surface is scratched by the pencil, test three times at different positions, and record the highest hardness pencil grade that does not leave marks on the coating surface.

[0084] (4) Adhesion test:

[0085] Test according to GB / T 1720-1979, place the coating adhesion test plate on the paint film surface, draw a grid on the coating surface with a blade, clean the coating surface with a brush, use 3M tape to closely adhere to the coating surface, then quickly tear off the tape, then observe whether there is a phenomenon of peeling off the coating surface. Then according to the degree of peeling of the coating, it is divided into six grades (0-5), 0 grade indicates that the coating is complete without damage, and the adhesion is good, 5 grade indicates that the coating is completely peeled off without adhesion.

[0086] (5) Impact resistance test:

[0087] Test according to GB / T 1732-1993, place the sample horizontally on the test table, lift the 1Kg tester to let it fall freely, observe whether the paint film has cracking, damage, etc., take three places to test, record the maximum height of the paint film without damage, cracking.

[0088] 2. Experimental results

[0089] The test results of the related properties of the coating formed by drying the coating obtained in the above examples and comparative examples are shown in Table 1.

[0090] Table 1 Test results of related properties of the coating formed by drying the coating obtained in the above examples and comparative examples

[0091]

[0092]

[0093] From the analysis of the test results in Table 1, it can be seen that by using hollow titanium dioxide loaded benzotriazole particles and zinc oxide nanoparticles in combination, and further adding alcohol ether type cosolvents with boiling points higher than 100°C and lower than 200°C, the coating formed by the coating of the present application has excellent yellowing resistance and high gloss, as in Reference Examples 1-14. Moreover, the coating in these examples also has excellent hardness, adhesion and impact resistance, and is an artistic coating with excellent comprehensive performance.

[0094] In Comparative Examples 1 and 2, other cosolvents were used, in which the cosolvent in Comparative Example 1 has a boiling point lower than 100°C, and the cosolvent in Comparative Example 2 has a boiling point higher than 200°C, which is not conducive to the gloss, hardness or adhesion of the coating. If the boiling point of the cosolvent is too low, the coating will volatilize too quickly during drying, which is not conducive to leveling, resulting in a coating surface that is not smooth and flat, reducing the gloss and hardness of the coating. If the boiling point of the cosolvent is too high, the coating will dry too slowly, which can cause the coating surface to stick or wrinkle, which is not conducive to the smoothness and flatness of the coating surface, reducing the gloss of the coating. In Comparative Example 3, pure acrylic resin emulsion was used, and the base resin did not have a benzene ring conjugated structure, which reduced the gloss, yellowing resistance, hardness and impact strength of the coating. In Comparative Examples 4 and 5, hollow titanium dioxide loaded benzotriazole particles and zinc oxide nanoparticles were not added, respectively, and the yellowing resistance and gloss of the coating were significantly reduced, which indicates that these two types of particles play a key role in improving the yellowing resistance and gloss of the coating, and neither can be omitted, and the hardness and impact resistance of the coating in these two comparative examples are also significantly reduced, because these two types of inorganic particles have high hardness and structural stability.

[0095] Further comparing Examples 1-3 and Examples 4 and 5, in the synthesis of the styrene-acrylic emulsion in Examples 4 and 5, the content of styrene monomer is too low and too high, respectively, which will cause the gloss of the coating to decrease, because the benzene ring structure in styrene has an important influence on the gloss of the coating, if the benzene ring structure is too low, it will not effectively improve the gloss of the coating, if the benzene ring structure is too high, the steric hindrance will increase, the particle size of the dispersion resin will increase, and then the gloss and stability will be affected.

[0096] Comparing Examples 1, 6, 7 and 8, we can know that when the particle size of the hollow titanium dioxide loaded benzotriazole particles is not within the range of 100-200 nm, or the particle size of the zinc oxide nanoparticles is not within the range of 200-300 nm, it will have a certain influence on the yellowing resistance and gloss of the coating. This is because only nanoparticles with a specific particle size can both exert the nanometer size effect, effectively improve the yellowing resistance and gloss of the coating, and also be uniformly distributed in the coating without agglomeration, and without affecting the performance of other substances in the coating.

[0097] Comparing example 1, 10, 11, 12, we can know that the type of co-solvent has certain influence on the glossiness of the coating, because the solubility of different types of co-solvents to polymer chain segment still has certain difference in the practical application of the coating, and the volatilization speed is also different in the drying process, the solubility of polymer chain segment and the volatilization speed need to be balanced to obtain the coating with smoother surface and better glossiness. Through the experiment, it is known that when propylene glycol methyl ether and dipropylene glycol methyl ether are used as co-solvents, the solubility of polymer chain segment and the volatilization speed of the coating reach the best, so the coating prepared has smoother surface and higher glossiness. Further comparing example 1, 13, 14, we can know that when the volume ratio of propylene glycol methyl ether and dipropylene glycol methyl ether is in the range of 1-1.5:1, it is more conducive to the balance of the solubility of polymer chain segment and the volatilization speed of the coating, so that the coating has higher glossiness.

[0098] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the protection scope of the present application. Although the present application has been described in detail with reference to the above examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently, but these modifications or replacements are within the protection scope of the present application.

Claims

1. A yellowing-resistant high-glossiness artistic paint, characterized by, According to weight parts, the raw materials include the following: styrene-acrylic emulsion 50-70 parts, hollow titanium dioxide loaded styrene-acrylic triazole particles 5-10 parts, zinc oxide nanoparticles 5-10 parts, and co-solvent 5-10 parts; The co-solvent includes at least one of propylene glycol methyl ether, ethylene glycol butyl ether, and dipropylene glycol methyl ether; The hollow titanium dioxide loaded styrene-acrylic triazole particles have a particle size of 100-200 nm; The zinc oxide nanoparticles have a particle size of 200-300 nm.

2. The yellowing resistant high gloss art coating of claim 1 wherein: The styrene-acrylic emulsion is obtained by copolymerization of styrene monomers and acrylic ester monomers, and the mass of the styrene monomers accounts for 5-10% of the total monomers.

3. The yellowing resistant high gloss art paint according to claim 1, wherein: The co-solvent is a compounded solvent of the propylene glycol methyl ether and the dipropylene glycol methyl ether.

4. The yellowing-resistant high glossiness artistic paint according to claim 3, wherein: The volume ratio of the propylene glycol methyl ether to the dipropylene glycol methyl ether is 1-1.5:

1.

5. The yellowing-resistant high glossiness artistic paint according to claim 1, wherein The preparation method of the hollow titanium dioxide loaded styrene-acrylic triazole particles includes the following steps: S1. Disperse polystyrene microsphere emulsion uniformly in a first solvent to obtain a first mixture; mix tetrabutyl titanate with a second solvent uniformly to obtain a second mixture; mix the first mixture with the second mixture, and adjust the pH to 9.5-10.5, then react at 75-85°C for 5-8 hours, wash and dry to obtain polystyrene / titanium dioxide core-shell microspheres; S2. Calcine the polystyrene / titanium dioxide core-shell microspheres at 600-700°C for 2-4 hours to obtain hollow titanium dioxide microspheres; S3. Mix benzotriazole with a third solvent, add the hollow titanium dioxide microspheres to the third solvent, mix for 18-24 hours, wash and dry to obtain the hollow titanium dioxide loaded styrene-acrylic triazole particles.

6. The yellowing-resistant high glossiness artistic paint according to claim 5, wherein: In the polystyrene microsphere emulsion, the polystyrene microspheres have a particle size of 60-140 nm.

7. The yellowing-resistant, high-glossiness artistic paint according to claim 1, wherein: According to weight parts, the raw materials further include color pigments 1-5 parts.

8. The yellowing resistant high gloss art coating of claim 1 wherein: According to weight parts, the raw materials further include inorganic fillers 10-15 parts; the inorganic fillers include at least one of mica powder, barium sulfate, feldspar powder, and diatomite.

9. The yellowing-resistant high glossiness artistic paint according to claim 1, wherein The following steps are taken to prepare the high-gloss yellowing-resistant artistic paint: Mix the styrene-acrylic emulsion, the hollow titanium dioxide loaded styrene-acrylic triazole particles, the zinc oxide nanoparticles, a thickening agent, a wetting agent, and water uniformly, then add inorganic fillers, a dispersing agent, an antifoaming agent, and a preservative, mix uniformly, finally add the co-solvent, a pH adjuster, and color pigments, and mix uniformly to obtain the high-gloss yellowing-resistant artistic paint.

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