Inorganic mirror effect art paint and method for preparing the same

Abstract

This invention relates to an inorganic mirror-effect artistic coating and its preparation method, belonging to the field of artistic coating technology. By weight, the inorganic mirror-effect artistic coating comprises the following raw materials: 15-45 parts water, 0.3-0.8 parts cellulose, 40-70 parts lime slurry, 0.5-5 parts titanium dioxide, 4-6 parts polymer emulsion, 0.3-2 parts hydrophobic agent, and 0.5-1 part humectant. This invention provides a lime-based high-gloss mirror-effect artistic coating with high fire resistance, slow drying speed, and convenient for creating stone and jade-like effects. It solves the problem of poor fire resistance in existing emulsion-based mirror coatings, and also addresses the issue that lime-based systems, due to their fast drying speed and short polishing time, cannot achieve a high-gloss mirror effect.

Description

Technical Field

[0001] This invention relates to the field of artistic coatings, and in particular to an inorganic mirror-effect artistic coating and its preparation method. Background Technology

[0002] Mirror-effect artistic coatings are a type of artistic coating that, after being applied, smoothed, and polished, forms a high-gloss surface. By mixing different colors, various effects resembling stone and jade can be created.

[0003] Currently, there are two commonly used technical solutions. One is the emulsion system, which uses an emulsion combined with fillers that help improve the gloss of the paint film. After smoothing and polishing, the paint film has a certain gloss. However, this solution only uses emulsion as the film-forming substance, resulting in a high emulsion content and high organic content, leading to poor fire resistance. In addition, because it is an emulsion system, when mixing different shades to create a jade effect, the color layering is harsh, and the gradient color is not natural and soft after smoothing and polishing. The second solution is the lime-based system, which utilizes the reaction of Ca(OH)2 in lime with CO2 in the air to generate CaCO3. The paint film can also achieve a certain gloss after smoothing and polishing. However, because the lime-based system has high porosity and rapid water absorption, when applying the second or third coat, the moisture in the paint film is quickly absorbed by the underlying layers, resulting in a fast drying speed and short time for smoothing and polishing. This leads to a lower gloss and is also not conducive to large-area application.

[0004] Therefore, there is an urgent need to develop a high-gloss mirror-effect artistic coating that has a high fire resistance rating, slow drying speed, is easy to apply, and can create a realistic imitation stone and jade effect. Summary of the Invention

[0005] This invention provides an inorganic mirror-effect artistic coating and its preparation method. Specifically, it provides a lime-based high-gloss mirror-effect artistic coating with high fire resistance, slow drying speed, and easy to create stone and jade-like effects. It aims to solve the problem of poor fire resistance of emulsion-based mirror coatings, and at the same time solve the problem that lime-based systems cannot achieve a high-gloss mirror effect due to their fast drying speed and short polishing time.

[0006] In a first aspect, the present invention provides an inorganic mirror-effect artistic coating, which, by weight, comprises the following raw materials:

[0007] Water 15-45 parts, cellulose 0.3-0.8 parts, lime milk 40-70 parts, titanium dioxide 0.5-5 parts, polymer emulsion 4-6 parts, hydrophobic agent 0.3-2 parts, humectant 0.5-1 part.

[0008] Furthermore, by weight, the inorganic mirror-effect artistic coating also includes the following raw materials: 0.3-0.6 parts of dispersant, 0.1-0.5 parts of wetting agent, 0.1-0.5 parts of defoamer, 0.2-0.8 parts of film-forming aid, 0.2-1.5 parts of thickener and 0.2-1.2 parts of antifreeze.

[0009] Furthermore, by weight percentage, the lime slurry is 70% hydrated lime, and the properties of the hydrated lime include: purity > 98% and mesh size between 1500 and 3000 mesh.

[0010] Furthermore, the polymeric emulsion includes at least one of styrene-acrylate copolymer emulsion, acrylate copolymer emulsion, and vinyl acetate-ethylene copolymer emulsion.

[0011] Furthermore, the hydrophobic agent is an organosilicon hydrophobic agent, which includes polysiloxane hydrophobic agents.

[0012] Furthermore, the humectant includes at least one of glycerol, polyethylene glycol, and polyether polyol.

[0013] Furthermore, the thickener includes at least one of polyurethane thickeners and alkali-swellable thickeners.

[0014] Further, the antifreeze includes at least one of propylene glycol and ethylene glycol; the dispersant includes at least one of polyacrylic acid dispersants, polyurethane dispersants, and polyphosphates; the wetting agent includes at least one of ethylene oxide adducts, polyether silicone wetting agents, and nonionic fluorocarbon polymers; the defoamer includes at least one of silicone defoamers and mineral oil defoamers; and the film-forming aid includes at least one of alcohol ester 12, alcohol ester 16, dipropylene glycol monobutyl ether, OE300, and diisobutyl nylonate.

[0015] Secondly, the present invention provides a method for preparing the inorganic mirror-effect artistic coating according to any one of the first aspects, the preparation method comprising the following steps:

[0016] Obtain lime milk;

[0017] Cellulose is added to water, followed by dispersant, wetting agent, film-forming aid, antifreeze, humectant and defoamer. After stirring evenly, titanium dioxide is added and mixed evenly to obtain slurry A.

[0018] The lime slurry is added to the slurry A and stirred until homogeneous. Then, a polymer emulsion is added, and finally, a hydrophobic agent and a thickener are added and stirred to obtain the inorganic mirror-effect artistic coating.

[0019] The technical solutions provided in the embodiments of the present invention have at least the following advantages compared with the prior art:

[0020] This invention provides an inorganic mirror-effect artistic coating and its preparation method. Specifically, it provides a lime-based high-gloss mirror-effect artistic coating with high fire resistance, slow drying speed, and easy application to create stone and jade-like effects. This aims to solve the problem of poor fire resistance in emulsion-based mirror coatings, and also to address the issue that lime-based systems, due to their fast drying speed and short polishing time, cannot achieve a high-gloss mirror effect. Specifically:

[0021] 1) such as Figure 1 As shown, the use of hydrophobic silicone additives forms a hydrophobic layer at the edges of the voids on the paint film surface, significantly slowing down moisture penetration while not hindering the free movement of water vapor. The paint film is hydrophobic yet breathable. In traditional lime-based products, due to the high porosity of the resulting paint film, moisture easily penetrates, making the film highly absorbent. During the second coat application, the moisture doesn't slowly evaporate into the air but is rapidly absorbed into the first coat, resulting in a very fast drying time for the second coat and very limited application time. This solution, due to the use of hydrophobic silicone additives, forms a hydrophobic layer at the edges of the voids on the paint film surface, significantly slowing down moisture penetration. During the second coat application, moisture is not easily absorbed by the first coat; most of the moisture slowly evaporates into the air, greatly delaying the drying time and allowing sufficient application time.

[0022] 2) Select high-content, fine-particle-size slaked lime (1500-3000 mesh), first add a dispersant to prepare slaked lime milk (lime milk) to maintain the original particle size. The slaked lime reacts with CO2 in the air to generate CaCO3. During the surface drying process of the paint film, CaCO3 is on the surface of the paint film. Slightly smooth and polish with a putty knife, and the relatively loose slaked lime will be squeezed out, and the paint film will begin to become dense. The CaCO3 on the surface fills some of the gaps in the powder, and the overall gloss of the paint film begins to increase. As the degree of smoothing and polishing increases, the gloss of the paint film becomes higher and higher. With sufficient working time, the paint film eventually becomes smooth and dense, forming a high-gloss mirror effect artistic paint.

[0023] 3) Select an acrylic copolymer emulsion (addition amount ≤6%) with good calcium ion stability and mechanical stability, good alkali resistance, good miscibility with quicklime and cement, and high hardness. The higher the refractive index of the polymer, the higher the gloss of the paint film. The gloss of the paint film of acrylic copolymer emulsion is higher than that of vinyl acetate emulsion.

[0024] 4) Low molecular weight HEC (hydroxyethyl cellulose) combined with glycerol moisturizer improves the product's moisturizing performance and further extends the product's open time.

[0025] 5) The content of organic matter in the entire formula determines the fire resistance of the paint film. The organic matter is mainly introduced by polymer emulsion. In conventional emulsion system products, the film-forming substance is polymer emulsion, and the addition amount is more than 9%. When the amount of polymer emulsion exceeds 9%, the fire resistance rating will basically not reach Class A non-combustible. In this lime-based formula, since Ca(OH)2 is used to form the film, the amount of polymer emulsion added is very low (≤6%). The organic matter content of the entire formula is low, and the fire resistance rating reaches Class A non-combustible (GB8624-2012). Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram illustrating part of the principle of the inorganic mirror effect artistic coating in this invention.

[0029] Figure 2 A flowchart illustrating the preparation method of the inorganic mirror-effect artistic coating provided in this embodiment of the invention.

[0030] Figure 3 This is a partial front view of the imitation jade effect in Example 1.

[0031] Figure 4 This is a side view of the jade-like effect in Example 1.

[0032] Figure 5 This is a gloss test diagram of the paint film in Example 1. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0035] In a first aspect, the present invention provides an inorganic mirror-effect artistic coating, which, by weight, comprises the following raw materials:

[0036] Water 15-45 parts, cellulose 0.3-0.8 parts, lime milk 40-70 parts, titanium dioxide 0.5-5 parts, polymer emulsion 4-6 parts, hydrophobic agent 0.3-2 parts, humectant 0.5-1.0 parts.

[0037] This invention provides an inorganic mirror-effect artistic coating and its preparation method. Specifically, it provides a lime-based high-gloss mirror-effect artistic coating with high fire resistance, slow drying speed, and easy application to create stone and jade-like effects. This aims to solve the problem of poor fire resistance in emulsion-based mirror coatings, and also to address the issue that lime-based systems, due to their fast drying speed and short polishing time, cannot achieve a high-gloss mirror effect. Specifically:

[0038] 1) such as Figure 1 As shown, Figure 1 In the diagram: the blue spheres represent water droplets. A magnified view of the paint film surface reveals some gaps. The red residue is a hydrophobic layer formed by an organosilicon hydrophobic additive at the edges of these gaps. Without this layer, water droplets would quickly wet the gaps and seep into them. Consequently, during the second coat application, the substrate (the dried paint film from the first coat) would rapidly absorb the moisture, resulting in a short open time and excessively fast drying for the second coat. With the hydrophobic layer, moisture remains on the paint film surface, preventing rapid penetration into the gaps and significantly extending the open time. Furthermore, most moisture evaporates slowly into the air, allowing the paint film to dry gradually. Using a humectant can further reduce evaporation, further prolonging the open time. The use of organosilicon hydrophobic additives forms a hydrophobic layer at the edges of the gaps in the paint film surface, significantly slowing down moisture penetration without hindering the free movement of water vapor. The paint film is hydrophobic yet breathable. In traditional paint application, lime-based products, due to their high porosity, allow moisture to easily penetrate the paint film, resulting in a highly absorbent film. During the second coat application, instead of allowing moisture to slowly evaporate into the air, it is rapidly absorbed into the first coat, causing the second coat to dry very quickly and leaving very little time for further application. This solution, however, utilizes a hydrophobic silicone additive to form a hydrophobic layer at the edges of the paint film's pores, significantly slowing down moisture penetration. During the second coat application, moisture is not easily absorbed by the first coat; most of it evaporates slowly into the air, greatly extending the drying time and allowing sufficient time for further application.

[0039] 2) Select high-content, fine-particle-size slaked lime (1500-3000 mesh), first add a dispersant to prepare slaked lime milk (lime milk) to maintain the original particle size. The slaked lime reacts with CO2 in the air to generate CaCO3. During the surface drying process of the paint film, CaCO3 is on the surface of the paint film. Slightly smooth and polish with a putty knife, and the relatively loose slaked lime will be squeezed out, and the paint film will begin to become dense. The CaCO3 on the surface fills some of the gaps in the powder, and the overall gloss of the paint film begins to increase. As the degree of smoothing and polishing increases, the gloss of the paint film becomes higher and higher. With sufficient working time, the paint film eventually becomes smooth and dense, forming a high-gloss mirror effect artistic paint.

[0040] 3) Select an acrylic copolymer emulsion (addition amount ≤6%) with good calcium ion stability and mechanical stability, good alkali resistance, good miscibility with quicklime and cement, and high hardness. The higher the refractive index of the polymer, the higher the gloss of the paint film. The gloss of the paint film of acrylic copolymer emulsion is higher than that of vinyl acetate emulsion.

[0041] 4) Low molecular weight HEC (hydroxyethyl cellulose) combined with glycerol moisturizer improves the product's moisturizing performance and further extends the product's open time.

[0042] 5) The content of organic matter in the entire formula determines the fire resistance of the paint film. The organic matter is mainly introduced by polymer emulsion. In conventional emulsion system products, the film-forming substance is polymer emulsion, and the addition amount is more than 9%. When the amount of polymer emulsion exceeds 9%, the fire resistance rating will basically not reach Class A non-combustible. In this lime-based solution, since Ca(OH)2 is used to form the film, the amount of polymer emulsion added is very low (≤6%). The organic matter content of the entire formula is low, and the fire resistance rating can reach Class A non-combustible (GB8624-2012).

[0043] In some specific embodiments, the inorganic mirror-effect artistic coating further includes the following raw materials by weight: 0.3-0.6 parts of dispersant, 0.1-0.5 parts of wetting agent, 0.1-0.5 parts of defoamer, 0.2-0.8 parts of film-forming aid, 0.2-1.5 parts of thickener, and 0.2-1.2 parts of antifreeze.

[0044] In some specific embodiments, the lime milk is 70% hydrated lime by weight percentage, and the properties of the hydrated lime include: purity > 98% and mesh size between 1500 and 3000 mesh.

[0045] In some specific embodiments, the polymeric emulsion includes at least one of styrene-acrylate copolymer emulsion, acrylate copolymer emulsion, and vinyl acetate-ethylene copolymer emulsion.

[0046] In some specific embodiments, the hydrophobic agent is an organosilicon hydrophobic agent, which includes polysiloxane hydrophobic agents.

[0047] In some specific embodiments, the humectant includes at least one of glycerol, polyethylene glycol, and polyether polyol.

[0048] In some specific embodiments, the thickener includes at least one of polyurethane thickeners and alkali-swellable thickeners.

[0049] In some specific embodiments, the antifreeze includes at least one of propylene glycol and ethylene glycol; the dispersant includes at least one of polyacrylic acid dispersants, polyurethane dispersants, and polyphosphates; the wetting agent includes at least one of ethylene oxide adducts, polyether silicone wetting agents, and nonionic fluorocarbon polymers; the defoamer includes at least one of silicone defoamers and mineral oil defoamers; and the film-forming aid includes at least one of alcohol ester 12, alcohol ester 16, dipropylene glycol monobutyl ether, OE300, and diisobutyl nylonate.

[0050] In some specific embodiments, preferably, the inorganic mirror-effect artistic coating comprises the following raw materials in parts by weight:

[0051] 21.7 parts water, 0.5 parts cellulose, 65 parts lime milk, 2 parts titanium dioxide, 6 parts polymer emulsion, 1.5 parts hydrophobic agent, 0.6 parts antifreeze, 0.6 parts dispersant, 0.1 parts wetting agent, 0.2 parts defoamer, 0.5 parts film-forming aid, 0.5 parts thickener, and 0.8 parts humectant.

[0052] It should be noted that, unless otherwise specified or specifically stated, all raw materials used in the inorganic mirror-effect artistic coating provided by this invention can be commercially available products.

[0053] In some specific embodiments, the cellulose (cellulose ether) includes HEC (hydroxyethyl cellulose), MHEC (methyl hydroxyethyl cellulose), and MHPC (methyl hydroxypropyl cellulose), etc. Aslan's 250HBR can be selected, which has good water retention performance, can improve open time, is stable in highly alkaline environments, has good compatibility with lime, better thermal stability, and higher water retention rate at high temperatures.

[0054] In some specific embodiments, the dispersant can be commercially available products such as Dow Chemical or sodium homopolymer of polyacrylic acid (QuickEasy), which have high dispersion efficiency, can efficiently disperse pigments and fillers, and anchor stably on the pigments and fillers, making them less prone to falling off, thus ensuring long-term product storage stability (viscosity stability).

[0055] In some specific embodiments, the wetting agent may be Clariant's alkyl polyoxyethylene ether (LCN070).

[0056] In some specific embodiments, the film-forming aid may be Dow's dipropylene glycol monobutyl ether.

[0057] In some specific embodiments, the defoamer can be Tego810 from Digo, an organosilicon defoamer with high defoaming efficiency and without affecting the gloss of the paint film.

[0058] In some specific embodiments, the titanium dioxide may be rutile titanium dioxide (produced by chloride process or sulfuric acid process), such as BLR-891 and BLR-886 from Longbai Group.

[0059] In some specific embodiments, the mortar may be from Xinxiang Bafang Calcium Industry Co., Ltd., with a Ca(OH)2 content > 98% and a mesh size of 1500-3000 mesh.

[0060] In some specific embodiments, the polymer emulsion may be selected from Badifu's RS-969W and RS-8631.

[0061] In some specific embodiments, the antifreeze agent may be propylene glycol from Foshan Hongchuan New Materials Co., Ltd.

[0062] In some specific embodiments, the moisturizer may be Clariant's G500 or G300.

[0063] In some specific embodiments, Wacker's BS1306 CN can be used as the hydrophobic agent. A hydrophobic layer is formed at the edge of the voids on the paint film surface, which can greatly slow down the penetration of water, while not affecting the free movement of water vapor. The paint film is hydrophobic but breathable, which greatly delays the opening time of the second coat of paint film.

[0064] In some specific embodiments, Dow's RM-12W thickener can be selected, which has good compatibility with lime-based materials, does not cause local flocculation, is convenient to add during the paint mixing stage, and does not affect the gloss of the paint film.

[0065] Secondly, based on the same inventive concept, this invention provides a method for preparing the inorganic mirror-effect artistic coating as described in any of the claims of the first aspect, such as... Figure 2 As shown, the preparation method includes the following steps:

[0066] Obtain lime milk;

[0067] Cellulose is added to water, followed by dispersant, wetting agent, film-forming aid, antifreeze, humectant and defoamer. After stirring evenly, titanium dioxide is added and mixed evenly to obtain slurry A.

[0068] The lime slurry is added to the slurry A and stirred until homogeneous. Then, a polymer emulsion is added, and finally, a hydrophobic agent and a thickener are added and stirred to obtain the inorganic mirror-effect artistic coating.

[0069] The method for preparing inorganic mirror-effect artistic coatings provided in this invention is simple to operate, requires no additional specific operating equipment, and is suitable for mass industrial production.

[0070] In some specific embodiments, the preparation method includes the following steps:

[0071] (1) Preparation of lime milk: Add the corresponding amount of dispersant A (French Gorta P30) to an appropriate amount of water, stir at low speed until uniform, then slowly add the corresponding amount of slaked lime, stir at high speed until uniform, and obtain lime milk; by weight percentage, the lime milk is 70% slaked lime, and the property parameters of the slaked lime include: purity > 98%, mesh size in the range of 1500-3000 mesh.

[0072] (2) Dispersion of pigments and fillers: Add cellulose to the water of the formula amount, and after it swells fully, add dispersant, wetting agent, film-forming aid, antifreeze, humectant and defoamer, stir evenly, add the corresponding amount of titanium dioxide and disperse at high speed, and after mixing evenly, obtain slurry A;

[0073] (3) Add the corresponding amount of prepared lime milk to the slurry A in step (2), stir evenly, then add the corresponding amount of emulsion, and finally add the hydrophobic agent and thickener. After stirring evenly, the artistic coating is obtained.

[0074] It should be noted that, unless otherwise specified or detailed, the preparation method of the inorganic mirror effect artistic coating provided by this invention can be carried out in accordance with existing coating preparation processes, and will not be described in detail here.

[0075] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Experimental methods in the following embodiments, unless otherwise specified, are generally performed according to national standards. If no corresponding national standard exists, then generally accepted international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0076] The raw material product information involved in the following examples and comparative examples is as follows:

[0077] Cellulose: Aslan 250HBR.

[0078] Dispersant: Dow Quick-Dispersant.

[0079] Wetting agent: Clariant LCN070.

[0080] Defoamer: Tego810.

[0081] Film-forming aid: Dow dipropylene glycol monobutyl ether.

[0082] Titanium dioxide: Longbai Group BLR-891.

[0083] Lime milk: The raw material, quicklime, was purchased from Xinxiang Bafang Calcium Industry.

[0084] Polymer emulsion: Badifu RS8631.

[0085] Antifreeze: Propylene glycol from Foshan Hongchuan New Materials Co., Ltd.

[0086] Moisturizer: Clariant G500.

[0087] Hydrophobic agent: Wacker BS1306 CN.

[0088] Thickener: Dow RM-12W.

[0089] Examples 1-5 and Comparative Examples 1-5 provide an inorganic mirror-effect artistic coating, the production process of which is as follows:

[0090] (1) Preparation of lime milk: Add the corresponding amount of dispersant a (French Gauthier P30) to an appropriate amount of water, stir at low speed until uniform, then slowly add the corresponding amount of slaked lime, stir at high speed until uniform, and obtain lime milk; by weight percentage, the lime milk is 70% slaked lime, and the property parameters of the slaked lime include: purity > 98%, mesh size of 1500 mesh.

[0091] (2) Dispersion of pigments and fillers: Add cellulose to the water of the formula amount, and after it swells fully, add dispersant, wetting agent, film-forming aid, antifreeze, humectant and defoamer, stir evenly, add the corresponding amount of titanium dioxide, disperse at high speed, and mix evenly to obtain slurry A.

[0092] (3) Add the corresponding amount of prepared lime milk to the slurry A in step (2), stir evenly, then add the corresponding amount of emulsion, and finally add the hydrophobic agent and thickener. After stirring evenly, the artistic coating is obtained.

[0093] The specific weight proportions of each component in the examples and comparative examples are shown in Tables 1 and 2.

[0094] Table 1 shows the specific weight parts of each component in each embodiment.

[0095]

[0096]

[0097] Table 2 shows the specific weight parts of each component in each comparative example.

[0098] Components Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 water 23.7 18.7 22.5 22.2 70.4 Cellulose 0.5 0.5 0.5 0 0.8 dispersant 0.5 0.5 0.5 0.5 0.5 wetting agent 0.2 0.2 0.2 0.2 0.2 Defoamer 0.3 0.3 0.3 0.3 0.3 Film-forming aids 0.8 0.8 0.8 0.8 0.8 Titanium dioxide 1 1 1 1 17 lime milk 65 65 65 65 0 polymer emulsion 6 9 6 6 6 antifreeze 0.6 0.6 0.6 0.6 0.6 Moisturizer 0.8 0.8 0 0.8 0.8 hydrophobic agent 0 2 2 2 2 Thickener 0.6 0.6 0.6 0.6 0.6 Total 100 100 100 100 100

[0099] Test case

[0100] This example demonstrates the performance testing of the inorganic mirror-effect artistic coatings provided in the embodiments and comparative examples. The test results for each example are shown in Tables 3 and 4. Figure 3 , Figure 4 and Figure 5 As shown, the surface drying time test method is as follows: the timer starts when the material is leveled after the second application and stops when the paint film can be polished and the gloss begins to rise; Figure 3 This is a partial front view of the jade-like effect in Example 1. Figure 4 This is a side view of the jade-like effect in Example 1. Figure 5 This is a gloss test diagram of the paint film in Example 1.

[0101] Table 3 Performance test results of the embodiments

[0102] Test Project Example 1 Example 2 Example 3 Example 4 Example 5 20° angle gloss 60.8 52.1 49.9 63.5 23.9 60° angle gloss 90.2 78.5 71.8 91.3 58.4 85° angle gloss 98.6 88.3 84.6 99.2 83 Drying time (minutes) 12 10 11 9 12 Fire rating Grade A Grade A Grade A Grade A Grade A

[0103] Table 4 Comparative Performance Test Results

[0104]

[0105]

[0106] Tables 3 and 4 show that: 1) Compared to Example 1, Comparative Example 1 did not add hydrophobic silicone additives, and the surface drying time of the paint film was only 3 minutes, compared to 12 minutes in Example 1, indicating a much faster drying speed; 2) Compared to Example 1, Comparative Example 2 added 9% emulsion, increasing the amount of organic matter, and the product's fire resistance rating did not reach Class A non-combustible; 3) Compared to Example 1, Comparative Example 3 did not add humectant, and the surface drying time was shorter than Example 1 but longer than Comparative Example 1, indicating that humectant helps with the drying speed; 4) Compared to Example 1, Comparative Example 4 did not add cellulose, and the surface drying time was shorter than Example 1 but longer than Comparative Example 1, indicating that cellulose helps with the drying speed; 5) Compared to Comparative Example 1, Comparative Example 5 did not use quicklime, resulting in a much lower overall gloss of the paint film, but because the second coat was not quickly absorbed by the substrate, the surface drying time was much longer.

[0107] In summary, this invention provides an inorganic mirror-effect artistic coating and its preparation method. Specifically, it provides a lime-based high-gloss mirror-effect artistic coating with high fire resistance, slow drying speed, and easy to create stone and jade-like effects. It aims to solve the problem of poor fire resistance of emulsion-based mirror coatings, and at the same time solve the problem that lime-based systems cannot achieve a high-gloss mirror effect due to their fast drying speed and short polishing time.

[0108] Various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of the invention; therefore, it should be considered that the range description has specifically disclosed all possible subranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the range referred to.

[0109] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An inorganic mirror-effect artistic coating, characterized in that, By weight, the inorganic mirror-effect artistic coating comprises the following raw materials: Water 15-45 parts, cellulose 0.3-0.8 parts, lime milk 40-70 parts, titanium dioxide 0.5-5 parts, polymer emulsion 4-6 parts, hydrophobic agent 0.3-2 parts, humectant 0.5-1 part, dispersant 0.3-0.6 parts, wetting agent 0.1-0.5 parts, defoamer 0.1-0.5 parts, film-forming aid 0.2-0.8 parts, thickener 0.2-1.5 parts, and antifreeze 0.2-1.2 parts; The lime slurry is 70% hydrated lime, and the properties of the hydrated lime include: purity > 98% and mesh size between 1500 and 3000 mesh.

2. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The polymeric emulsion includes at least one of styrene-acrylate copolymer emulsion, acrylate copolymer emulsion, and vinyl acetate-ethylene copolymer emulsion.

3. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The hydrophobic agent is an organosilicon hydrophobic agent, which includes polysiloxane hydrophobic agents.

4. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The humectant includes at least one of glycerol and polyether polyol.

5. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The humectant is polyethylene glycol.

6. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The thickener includes at least one of polyurethane thickeners and alkali-swellable thickeners.

7. The inorganic mirror-effect artistic coating according to claim 1, characterized in that, The antifreeze includes at least one of propylene glycol and ethylene glycol; the dispersant includes at least one of polyacrylic acid dispersants, polyurethane dispersants, and polyphosphates; the wetting agent includes at least one of ethylene oxide adducts, polyether silicone wetting agents, and nonionic fluorocarbon polymers; the defoamer includes at least one of silicone defoamers and mineral oil defoamers; and the film-forming aid includes at least one of alcohol ester 12, alcohol ester 16, dipropylene glycol monobutyl ether, and diisobutyl nylonate.

8. A method for preparing an inorganic mirror-effect artistic coating according to any one of claims 2 to 7, characterized in that, The preparation method includes the following steps: Obtain lime milk; Cellulose is added to water, followed by dispersant, wetting agent, film-forming aid, antifreeze, humectant and defoamer. After stirring evenly, titanium dioxide is added and mixed evenly to obtain slurry A. The lime slurry is added to the slurry A and stirred until homogeneous. Then, a polymer emulsion is added, and finally, a hydrophobic agent and a thickener are added and stirred to obtain the inorganic mirror-effect artistic coating.

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