A new type of projection paint with high reflectivity and its preparation method

Abstract

The present application discloses a novel projection paint with high reflectivity and a preparation method thereof. The projection paint comprises the following raw materials in parts by weight: 300 - 450 parts of organosilicon-modified pure acrylic emulsion; 50 - 150 parts of pearlescent powder; 50 - 90 parts of hollow glass micro-powder; 220 - 400 parts of water; 20 - 30 parts of nano-titanium dioxide; 12 - 18 parts of halloysite nanotubes; 6 - 10 parts of coupling agent; 5 - 10 parts of preservative; 8 - 15 parts of dispersant; 7 - 12 parts of wetting agent; 9 - 17 parts of leveling agent; 4 - 8 parts of defoaming agent; 6 - 11 parts of thickening agent; 24 - 36 parts of β-cyclodextrin. The novel projection paint with high reflectivity provided by the present application has the characteristics of better reflectivity, high-definition projection images, and better aging resistance.

Description

Technical Field

[0001] This application relates to the technical field of coatings, and particularly to a novel projection paint with high reflectivity and its preparation method. Background Art

[0002] In modern projection technology, projection paint, as an innovative wall decoration material, is particularly suitable for home theater and business display scenarios. By adding high-efficiency reflective materials such as silver powder to ordinary latex paint base materials, the reflection performance of the wall can be significantly improved. However, such projection paints containing silver also pose a series of technical and application challenges: First, since silver is a precious metal with a high market price, adding silver to projection paint will significantly increase the manufacturing cost, making the market price of such products more expensive than traditional coatings. Second, silver is prone to chemical reactions with substances such as sulfides and oxides in the atmosphere, resulting in the oxidation of the silver surface to form black silver sulfide or other compounds. This not only damages the aesthetics of the paint surface but also seriously affects the durability and consistency of its reflection performance, thereby reducing the quality of the projection effect. Moreover, silver undergoes chemically unstable reactions with other components in specific environments, which leads to a decrease in the physical and chemical stability of the projection paint, shortening its expected service life, and may exhibit performance degradation over time. In addition, the currently used novel projection paints have poor aging resistance, resulting in cracks in the coating. Moreover, the color reduction is poor, resulting in a significant discount on the viewing effect. Summary of the Invention

[0003] In order to solve at least one of the above technical problems and develop a novel projection paint material that has both high reflectivity, low cost, high color reduction, and good aging resistance, this application provides a novel projection paint with high reflectivity and its preparation method.

[0004] In a first aspect, this application provides a novel projection paint with high reflectivity, and the projection paint includes the following raw materials by weight parts:

[0005] 300 - 450 parts of organosilicon-modified pure acrylic emulsion;

[0006] 50 - 150 parts of pearlescent powder;

[0007] 50 - 90 parts of hollow glass microspheres;

[0008] 220 - 400 parts of water;

[0009] 20 - 30 parts of nano-titanium dioxide;

[0010] 12 - 18 parts of halloysite nanotubes;

[0011] 6 - 10 parts of coupling agent;

[0012] 5 - 10 parts of preservative;

[0013] 8 - 15 parts of dispersant;

[0014] 7 - 12 parts of wetting agent;

[0015] 9 - 17 parts of leveling agent;

[0016] 4 - 8 parts of defoaming agent;

[0017] 6 - 11 parts of thickening agent;

[0018] 24 - 36 parts of β - cyclodextrin.

[0019] By adopting the above - mentioned technical solutions, the new projection paint technical solution with high reflectivity provided by this application ingeniously integrates a variety of selected raw materials and solves the technical bottlenecks in multiple aspects such as cost control, high reflectivity, color fidelity, and physical stability of the paint film in the field of projection paint in an innovative way. Specifically: The organosilicon - modified pure acrylic emulsion, as the basic binder, not only enhances the flexibility and weather resistance of the paint film, but also improves the smoothness of the paint film surface through the modification of organosilicon, which is beneficial to the uniform reflection of light. The combined use of pearlescent powder and hollow glass micro - powder, the former increases the visual richness and depth through the interference and scattering effects of light, and the latter effectively improves the scattering efficiency of the paint film through its unique hollow structure. The two work together to improve the reflection efficiency and enhance the color expressiveness. Nano - titanium dioxide, as an efficient light - scattering agent, significantly improves the whiteness and reflectivity of the paint film, ensuring the brightness and clarity of the projection screen.

[0020] The addition of halloysite nanotubes, taking advantage of their excellent mechanical properties and dimensional stability, significantly enhances the aging resistance of the paint film, and can maintain good integrity even under temperature changes or external forces.

[0021] The introduction of halloysite nanotubes and β-cyclodextrin further improves the aging resistance and stability of the new projection paint with high reflectivity. Halloysite nanotubes, with their excellent mechanical properties and dimensional stability, effectively build a reinforcement network inside the paint film, significantly enhancing the aging resistance of the paint film, so that the projection paint can maintain structural integrity even under extreme temperature differences or physical stress, extending its service life. β-cyclodextrin, through its unique inclusion complex, effectively protects the components in the paint, avoids performance degradation caused by oxidation or light, thereby improving chemical stability and long-term color vividness. At the same time, its excellent dispersion properties further promote the uniformity and delicacy of the paint film, playing a key role in improving surface flatness and color uniformity. Therefore, the combined effect of halloysite nanotubes and β-cyclodextrin, on the one hand, ensures the toughness and durability of the paint film by enhancing the physical structure, and on the other hand, improves the optical properties and aesthetics of the paint film by chemical stability and optimized dispersibility. Together, they promote the overall improvement of the reflection efficiency, color fidelity, and physical stability of the new projection paint, and are the key factors in achieving high-performance projection effects.

[0022] The selection and proportion of coupling agents, preservatives, dispersants, wetting agents, leveling agents, defoamers, thickeners, etc. are all to ensure the effective mixing of raw materials, prevent precipitation, optimize construction performance and reduce paint film defects during the production process. These additives work together to make the final paint film surface smooth and uniform, with good construction convenience and long-term stability.

[0023] In summary, the technical solution provided by this application not only achieves a balance between cost efficiency and high performance through precise proportions and a combination of raw materials that work together, but also achieves significant improvements in reflection efficiency, color realism and physical stability of the paint film, bringing revolutionary progress to the projection paint market and meeting the urgent demand for high-quality projection display effects.

[0024] Optionally, the weight ratio of the β-cyclodextrin to the halloysite nanotubes is 2:(0.8-1.3).

[0025] By adopting the above technical solutions, especially under the condition that the weight ratio of β-cyclodextrin to halloysite nanotubes is set to 2:(0.8 - 1.3), the novel projection paint of the present application achieves a more optimized performance balance. This ratio design aims to maximize the synergistic effect of the two components: β-cyclodextrin, with its unique molecular cage structure, not only effectively encapsulates and protects the components in the paint, such as easily oxidized pigments and additives, thereby improving chemical stability, but also promotes the uniform distribution of each component in the paint film by improving dispersibility, enhancing the color saturation and reduction degree. Its hydrophilic and hydrophobic characteristics inside and outside also contribute to forming a more delicate and smooth paint surface, improving the clarity and visual effect of the projected image. Halloysite nanotubes, through their excellent mechanical properties and dimensional stability, provide the necessary strength and toughness for the paint film, significantly enhancing the aging resistance and durability of the paint film, ensuring that the paint film can still maintain good integrity under various environmental conditions, especially under temperature fluctuations and mechanical stress, reducing the risk of cracking, and extending the service life.

[0026] When the weight ratio of β-cyclodextrin to halloysite nanotubes is 2:(0.8 - 1.3), while maintaining high reflectivity and color fidelity, the projection paint significantly improves the physical stability of the paint film, especially the aging resistance, providing a solid technical foundation for achieving an efficient, durable, and cost-effective projection display solution.

[0027] Optionally, the weight ratio of the β-cyclodextrin to the halloysite nanotubes is 2:1.

[0028] By adopting the above technical solutions, with the weight ratio of β-cyclodextrin to halloysite nanotubes being 2:1 in the present application, the novel projection paint of the present application, while maintaining high reflectivity and improving color reduction degree, significantly enhances the physical stability and aging resistance of the paint film, achieving an optimized balance between cost and performance, and providing an efficient, durable, and economical solution for the projection display field.

[0029] Optionally, the total weight of the β-cyclodextrin and the halloysite nanotubes accounts for 3.32 - 4.90% of the total weight of the high-reflectivity novel projection paint.

[0030] By adopting the above technical solutions, at this specific ratio of β-cyclodextrin and the halloysite nanotubes, the two components act together, not only can effectively improve the reflectivity of the paint film, making the projected image brighter and the color more saturated, but also can enhance the physical stability and durability of the paint film. The addition of halloysite nanotubes helps to form a more dense paint film structure, reducing light scattering loss, while β-cyclodextrin stabilizes other components to prevent chemical degradation and maintain the long-term high-reflectivity performance of the paint film.

[0031] Optionally, the total weight of the β-cyclodextrin and the halloysite nanotubes accounts for 4.64% of the total weight of the novel projection paint with high reflectivity.

[0032] Optionally, the dispersant is selected from sodium dodecyl sulfate.

[0033] Optionally, the wetting agent is selected from polyoxyethylene fatty alcohol ether.

[0034] Optionally, the leveling agent is selected from cellulose acetate butyrate.

[0035] Optionally, the thickening agent is selected from hydroxyethyl cellulose.

[0036] Optionally, the particle size of the nano-titanium dioxide is 10 - 30 nm.

[0037] In a second aspect, the present application provides a preparation method of a novel projection paint with high reflectivity, and the preparation method includes the following steps:

[0038] S1. Mix the dispersant, wetting agent, preservative and water evenly to obtain a first mixture;

[0039] S2. Mix the first mixture evenly with pearlescent powder, nano-titanium dioxide, halloysite nanotubes, and β-cyclodextrin to obtain a second mixture;

[0040] S3. Mix the second mixture evenly with the hollow glass microspheres, the organosilicon-modified pure acrylic emulsion and the coupling agent to obtain a third mixture;

[0041] S4. Mix the third mixture evenly with the leveling agent to prepare a paint slurry;

[0042] S5. Mix the paint slurry with the defoaming agent and the thickening agent, and adjust the viscosity to 100 KU to 105 KU to obtain the novel projection paint with high reflectivity.

[0043] By adopting the above technical solutions and the above preparation method, this application ensures that the components of the paint can be fully and evenly dispersed, thus achieving ideal performance. Specifically, the advantages of this method are reflected in the following aspects: In step S1, the dispersant, wetting agent, preservative and water are first mixed. These auxiliaries can be fully dissolved and activated in water in advance, creating the optimal conditions for the subsequent dispersion of pigments and fillers, ensuring that the pigment and filler particles can be effectively wetted, reducing agglomeration and improving the uniformity of the paint slurry. In steps S2 to S4, each raw material is added in an orderly manner according to the material properties and action mechanisms, gradually constructing the paint system. First, pearlescent powder, nano-titanium dioxide, halloysite nanotubes and β-cyclodextrin are added to the first mixture. These components are directly related to the optical and physical properties of the paint film. Through careful mixing, the effective dispersion and maximization of the functions of the nano-materials are ensured. Then, hollow glass microspheres and organosilicon-modified pure acrylic emulsion are added. The proper timing of adding these large-volume components is conducive to maintaining the stability of the system and gradually constructing the basic structure of the paint film.

[0044] In step S4, a leveling agent is added, which helps to eliminate the surface defects of the paint film and ensure the smoothness of the paint film, which is crucial for improving the clarity of the projection screen. In step S5, finally, an antifoaming agent and a thickening agent are added. By adjusting the viscosity of the paint slurry to the appropriate range (100 KU to 105 KU), it not only facilitates the leveling during construction and reduces bubbles, but also ensures the thickness and uniformity of the paint film, further improving the physical properties and projection effect of the paint film. In summary, through the refined operation process and strict ratio control, this preparation method ensures that the raw materials of the new projection paint with high reflectivity can work effectively together, not only improving the reflection efficiency and color reproducibility of the paint film, but also enhancing the physical stability of the paint film, especially the aging resistance. The final product technically solves the industry pain points and meets the market demand for high-quality projection paint.

[0045] In summary, the present invention includes at least one of the following beneficial technical effects:

[0046] 1. The technical solution provided by this application, through the combination of precisely proportioned and co-acting raw materials, not only achieves the balance between cost efficiency and high performance, but also realizes a significant improvement in reflection efficiency, color authenticity and the physical stability of the paint film, bringing a revolutionary progress to the projection paint market and meeting the urgent demand for high-quality projection display effects. The technical solution provided by this application, through the combination of precisely proportioned and co-acting raw materials, not only achieves the balance between cost efficiency and high performance, but also realizes a significant improvement in reflection efficiency, color authenticity and the physical stability of the paint film, bringing a revolutionary progress to the projection paint market and meeting the urgent demand for high-quality projection display effects

[0047] 2. When the weight ratio of β-cyclodextrin to halloysite nanotubes is 2:(0.8 - 1.3), while maintaining high reflectivity and color fidelity, the projection paint significantly improves the physical stability of the paint film, especially the aging resistance, providing a solid technical foundation for achieving efficient, durable, and cost-effective projection display solutions.

[0048] 3. Through a refined operation process and strict ratio control, this preparation method ensures that the raw materials of the new projection paint with high reflectivity can work effectively together, not only improving the reflection efficiency and color reduction degree of the paint film, but also strengthening the physical stability of the paint film, especially the aging resistance. The final product technically solves the industry pain points and meets the market demand for high-quality projection paint. Detailed implementation mode

[0049] The following further elaborates on this application in combination with examples.

[0050] Organosilicon-modified pure acrylic emulsion: Anhui Zhong'en Chemical Co., Ltd., brand SA-109.

[0051] Pearlescent powder: CAS No. 1319-46-6, purity 99%.

[0052] Hollow glass microspheres: CAS No. 65997-17-3, model S4630.

[0053] Nano-titanium dioxide: particle size 10 - 30nm.

[0054] Halloysite nanotubes: Suzhou Kaifa New Material Technology Co., Ltd., model szbknm2010.

[0055] Sodium dodecyl sulfate: Henan Kuntai Chemical Products Co., Ltd., content 95%.

[0056] Polyoxyethylene fatty alcohol ether: Jiaxiang County Dahai Chemical Co., Ltd., content 99%.

[0057] Cellulose acetate butyrate: Jiangsu Pulesi Biotechnology Co., Ltd., content 99%.

[0058] Hydroxyethyl cellulose: Henan Jinshuo Technology Co., Ltd., content 99%.

[0059] Dimethyl silicone oil defoamer: Shanghai Sanrong Chemical Technology Co., Ltd., model AK350.

[0060] KH-791 coupling agent: CAS No. 5089-72-5, content 99%.

[0061] Benzisothiazolinone: Zaozhuang Shibang Biotechnology Co., Ltd.

[0062] β-Cyclodextrin: CAS No. 68168-23-0, content 99%. Specific embodiments

[0064] Example 1

[0065] This example provides a new type of projection paint with high reflectivity, including the following raw materials by weight:

[0066] 300 parts of organosilicon-modified pure acrylic emulsion; 50 parts of pearlescent powder; 50 parts of hollow glass micropowder; 220 parts of water; 20 parts of nano-titanium dioxide; 15 parts of halloysite nanotubes; 6 parts of coupling agent; 5 parts of preservative; 8 parts of dispersant; 7 parts of wetting agent; 9 parts of leveling agent; 4 parts of defoamer; 6 parts of thickener; 27 parts of β-cyclodextrin;

[0067] The dispersant in this example is selected from sodium dodecyl sulfate.

[0068] The wetting agent in this example is selected from polyoxyethylene fatty alcohol ether.

[0069] The leveling agent in this example is selected from cellulose acetate butyrate.

[0070] The thickener in this example is selected from hydroxyethyl cellulose.

[0071] The defoamer in this example is selected from dimethyl silicone oil defoamer.

[0072] The coupling agent in this example is selected from KH-791.

[0073] The preservative in this example is selected from benzisothiazolinone.

[0074] The particle size of the nano-titanium dioxide in this example is 10-30 nm.

[0075] The preparation method of the new type of projection paint with high reflectivity in this preparation example includes the following steps:

[0076] S1. Mix the dispersant, wetting agent, preservative and water evenly to obtain the first mixture;

[0077] S2. Mix the first mixture evenly with the pearlescent powder, nano-titanium dioxide, halloysite nanotubes, and β-cyclodextrin to obtain the second mixture;

[0078] S3. Mix the second mixture evenly with the hollow glass micropowder, the organosilicon-modified pure acrylic emulsion and the coupling agent to obtain the third mixture;

[0079] S4. Mix the third mixture evenly with the leveling agent to prepare the paint slurry;

[0080] S5. Mix the paint slurry with the defoamer and the thickener, and adjust the viscosity to 103 KU to obtain the novel projection paint with high reflectivity.

[0081] Examples 2 - 4

[0082] Example 2

[0083] The difference between this example and Example 1 is that when preparing the novel projection paint with high reflectivity, the total weight of β - cyclodextrin and halloysite nanotubes is 42 parts, and the weight ratio of β - cyclodextrin to halloysite nanotubes is 2:0.8.

[0084] Example 3

[0085] The difference between this example and Example 1 is that when preparing the novel projection paint with high reflectivity, the total weight of β - cyclodextrin and halloysite nanotubes is 42 parts, and the weight ratio of β - cyclodextrin to halloysite nanotubes is 2:1.

[0086] Example 4

[0087] The difference between this example and Example 1 is that when preparing the novel projection paint with high reflectivity, the total weight of β - cyclodextrin and halloysite nanotubes is 42 parts, and the weight ratio of β - cyclodextrin to halloysite nanotubes is 2:1.3.

[0088] Comparative Examples 1 - 3

[0089] Comparative Example 1

[0090] The difference between this comparative example and Example 3 is that when preparing the novel projection paint with high reflectivity, halloysite nanotubes are not added.

[0091] Comparative Example 2

[0092] The difference between this comparative example and Example 3 is that when preparing the novel projection paint with high reflectivity, β - cyclodextrin is not added.

[0093] Comparative Example 3

[0094] The difference between this comparative example and Example 3 is that when preparing the novel projection paint with high reflectivity, neither β - cyclodextrin nor halloysite nanotubes are added.

[0095] Experimental detection:

[0096] Resistance to artificial weathering: Conducted in accordance with the provisions of GB / T 1865-2009. Using a Q-sun Xe-1-BC xenon lamp accelerated aging test chamber for the artificial aging test as specified in GB / T 1865-2009, the conditions are 4 hours of light at 50 °C and 4 hours of water vapor circulation test at 40 °C. Observe whether there are phenomena such as blistering, whitening, cracking, etc. in the paint film within a total test time of 1500 h. The result evaluation is divided into 3 levels: level 0 if no phenomena such as bubbles and cracking occur, level 1 if slight blistering, cracking, etc. occur, and level 2 if severe blistering, cracking, etc. occur.

[0097] See Table 1 for the experimental test results of Examples 1-4 and Comparative Examples 1-3.

[0098] Table 1 - Experimental Test Results Table of Examples 1-4 and Comparative Examples 1-3

[0099] Example Brightness coefficient β Effective scattering angle 2α (°) Color reducibility (%) Resistance to artificial weathering: Technical indicators ≥1.1 ≥120° ≥95％ No abnormality after 1500h (Grade 0) Example 1 2.28 156 98.0 Grade 0 Example 2 2.13 151 97.2 Grade 0 Example 3 2.31 158 98.5 Grade 0 Example 4 2.22 153 97.9 Grade 0 Comparative example 1 1.93 140 94.1 Grade 2 Comparative example 2 1.95 143 93.3 Grade 1 Comparative example 3 1.90 138 92.2 Grade 2

[0100] Result analysis: The differences between Examples 2-4 and Example 1 are that when preparing the new projection paint with high reflectivity, the total weight of β-cyclodextrin and halloysite nanotubes is 42 parts, while the weight ratio of β-cyclodextrin and halloysite nanotubes is different. Combining the experimental test results in Table 1, it can be seen that when the weight ratio of β-cyclodextrin and halloysite nanotubes is 2:1, the flame retardancy and antistatic performance of the prepared new projection paint with high reflectivity are better. The difference between Comparative Example 1 and Example 3 is that halloysite nanotubes were not added when preparing the new projection paint with high reflectivity. The difference between Comparative Example 2 and Example 3 is that β-cyclodextrin was not added when preparing the new projection paint with high reflectivity. The difference between Comparative Example 3 and Example 3 is that neither β-cyclodextrin nor halloysite nanotubes were added when preparing the new projection paint with high reflectivity. Combining the experimental test results in Table 1, it can be seen that when preparing the new projection paint with high reflectivity, the compound use of β-cyclodextrin and halloysite nanotubes can better improve the comprehensive performance of the prepared new projection paint with high reflectivity. The reason may be that the compound use of β-cyclodextrin and halloysite nanotubes gives play to their respective unique properties and produces a synergistic effect. As a complexing agent, β-cyclodextrin can stabilize other components in the coating, reduce chemical reactions and photolysis, thereby protecting the color stability and chemical stability of the paint film. At the same time, its unique structure also helps to improve the transparency and dispersibility of the coating, which is beneficial to enhancing the optical properties of the projection paint. On the other hand, halloysite nanotubes, with their excellent mechanical properties, significantly enhance the physical structure of the paint film, improve the crack resistance and wear resistance, and may also improve the microscopic morphology of the coating due to their nano-scale structure, contributing to the uniform reflection of light, thereby enhancing the high reflectivity characteristics.

[0101] Examples 5-6

[0102] Example 5

[0103] Examples 5-6 are different from Example 3 in that when preparing the new projection paint with high reflectivity, the weight parts of some components are changed. See Table 2 for the different parts.

[0104] Table 2 - Table of the different parts between Examples 5-6 and Example 3

[0105] Composition (g) Example 3 Example 5 Example 6 Organosilicon modified pure acrylic emulsion 300 395 450 Pearlescent powder 50 120 150 Hollow glass micro powder 50 75 90 Water 220 365 400 Nano-titanium dioxide 20 27 30 Halloysite nanotube 14 14 14 Coupling agent 6 8 10 Preservative 5 7 10 Dispersant 8 13 15 Wetting agent 7 10 12 Leveling agent 9 14 17 Defoaming agent 4 6 8 Thickening agent 6 9 11 β-cyclodextrin 28 28 28 See Table 3 for the experimental test results of Examples 5-6.

[0106] Table 3 - Table of the experimental test results of Examples 5-6

[0107]

[0108] Result analysis: Examples 5-6 are different from Example 3 in that when preparing the new projection paint with high reflectivity, the weight parts of some components are different. Combining with the experimental test results in Table 3, it can be known that when preparing the new projection paint with high reflectivity, the comprehensive performance of the new projection paint prepared in Example 5 is better.

[0109] Examples 7-11

[0110] Examples 7-11 are different from Example 5 in that when preparing the new projection paint with high reflectivity, on the premise that the weight ratio of β-cyclodextrin to halloysite nanotubes is 2:1, by changing the proportion of the total weight of β-cyclodextrin and halloysite nanotubes in the new projection paint with high reflectivity, and the better weight proportion is optimized.

[0111] In Example 5, the total weight of β-cyclodextrin and halloysite nanotubes is 42 parts, and the total weight of the new projection paint with high reflectivity is 1091 parts.

[0112] Therefore, it is not difficult to conclude that in Example 5, the proportion of β-cyclodextrin (referred to as variable 1) and halloysite nanotubes (referred to as variable 2) in the new projection paint with high reflectivity (referred to as the matrix) is 3.85%.

[0113] See Table 4 for the different parts between Examples 7-11 and Example 5.

[0114] Proportion = (variable 1 + variable 2) / total weight of the matrix * 100%.

[0115] Table 4 - Table of the different parts between Examples 7-11 and Example 5

[0116]

[0117] See Table 5 for the experimental test results of Examples 7-11.

[0118] Table 5 - Experimental Test Results Table of Examples 7 - 11

[0119] Example Brightness coefficient β Effective scattering angle 2α Color reducibility Aging resistance Technical indicators ≥1.1 ≥120° ≥95％ No abnormality after 1500h (Grade 0) Example 5 2.40 162 99.0 Grade 0 Example 7 2.36 155 97.1 Grade 0 Example 8 2.38 158 98.3 Grade 0 Example 9 2.43 164 99.4 Grade 0 Example 10 2.49 168 99.7 Grade 0 Example 11 2.45 166 99.5 Grade 0

[0120] Result Analysis: The difference between Examples 7 - 11 and Example 5 is that when preparing the new type of projection paint with high reflectivity, when the proportion of β - cyclodextrin (referred to as variable 1) and halloysite nanotubes (referred to as variable 2) in the new type of projection paint with high reflectivity (referred to as the matrix) is between 3.85 - 4.90%, the comprehensive performance of the prepared new type of projection paint with high reflectivity is better. When the proportion of β - cyclodextrin (referred to as variable 1) and halloysite nanotubes (referred to as variable 2) in the new type of projection paint with high reflectivity (referred to as the matrix) is 4.64%, the comprehensive performance of the prepared new type of projection paint with high reflectivity is relatively good.

[0121] The above are all preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A new type of projection paint with high reflectivity, characterized in that: The projection paint comprises the following raw materials by weight: 300-450 parts of silicone modified pure acrylic emulsion; Pearlescent powder 50-150 parts; 50-90 parts of hollow glass powder; 220-400 parts of water; 20-30 parts of nano titanium dioxide; 12-18 parts of halloysite nanotubes; 6-10 parts of coupling agent; 5-10 parts of preservatives; 8-15 parts of dispersant; Wetting agent 7-12 parts; Leveling agent 9-17 parts; 4-8 parts of defoaming agent; Thickener 6-11 parts; 24-36 parts of β-cyclodextrin; The coupling agent is KH-791 coupling agent; the dispersant is selected from sodium dodecyl sulfate; the weight ratio of the β-cyclodextrin to the halloysite nanotubes is 2:(0.8-1.3); the total weight of the β-cyclodextrin and the halloysite nanotubes accounts for 3.32-4.90% of the total weight of the new projection paint with high reflectivity.

2. The novel projection paint with high reflectivity according to claim 1, characterized in that: The weight ratio of the β-cyclodextrin to the halloysite nanotubes is 2:

1.

3. The novel projection paint with high reflectivity according to claim 1, characterized in that: The preservative is selected from benzisothiazolinone.

4. The novel projection paint with high reflectivity according to claim 1, characterized in that: The wetting agent is selected from polyoxyethylene fatty alcohol ethers.

5. The novel projection paint with high reflectivity according to claim 1, characterized in that: The leveling agent is selected from cellulose acetate butyrate.

6. The novel projection paint with high reflectivity according to claim 1, characterized in that: The thickener is selected from hydroxyethyl cellulose.

7. The novel projection paint with high reflectivity according to claim 1, characterized in that: The particle size of the nano titanium dioxide is 10-30nm.

8. A method for preparing the novel projection paint with high reflectivity according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: S1, uniformly mixing the dispersant, wetting agent, preservative and water to obtain a first mixture; S2, uniformly mixing the first mixed material with pearlescent powder, nano titanium dioxide, halloysite nanotubes, and β-cyclodextrin to obtain a second mixed material; S3, uniformly mixing the second mixed material with the hollow glass powder, the organosilicon-modified pure acrylic emulsion and the coupling agent to obtain a third mixed material; S4, mixing the third mixed material and the leveling agent evenly to obtain a paint slurry; S5. Mix the paint slurry with the defoamer and the thickener, and adjust the viscosity to 100KU to 105KU to obtain the novel projection paint with high reflectivity.

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