Lightweight stone-like coating and preparation method thereof

Abstract

The invention relates to the technical field of building coatings, and discloses a lightweight stone-like coating and a preparation method thereof, the lightweight stone-like coating comprises the following components by mass: 5-15% of a protective glue; 1-5% of anti-settling slurry; sand-containing color points account for 65-75%, and continuous items account for 15-25%. According to the light stone-like coating, the sand-containing color points serve as the main material, color sand is replaced with the mode that common white sand and color paste are added, the specific texture of the stone-like coating is kept by adding common white sand of different meshes, the use amount of white sand is only 20-30% of the number of color sand in the stone-like coating, the use amount of gravel is greatly reduced, the load bearing on a wall can be reduced, and protection of the wall is facilitated. In addition, the consumption of the light stone-like coating is only 1 / 3 of that of real stone paint, and carbon emission can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a lightweight stone-imitation paint and a preparation method thereof. Background Art

[0002] Water-based imitation stone paint is a single-component coating for building exteriors, composed of two or more water-based color particles suspended in a water-based medium. This coating produces a variety of colors through a single spray application. Based on an acrylic resin emulsion and an elastomeric resin solution, it utilizes a high-pressure spray gun to create a rich, stone-like coating. Water-based imitation stone paint is primarily used to simulate stone, hence the name liquid imitation stone paint. Real stone paint, a coating with a decorative effect resembling marble and granite, is primarily formulated with various colors of natural colored sand and is used to create a simulated stone effect on building exteriors.

[0003] Chinese patent CN108821641A discloses a natural stone paint and its preparation method. The paint is composed of 5-10 parts of natural stone paint colloid and 15-20 parts of colored sand, with the colored sand content being 60-80%. Chinese patent CN114292557A discloses a non-coating natural stone paint, its preparation method, and its use, with the colored sand content being 71%-74%. Existing natural stone paints require a large amount of colored sand, which significantly affects the wall's load-bearing capacity and service life.

[0004] Real stone paint that uses a large amount of natural colored sand faces severe challenges - this is because the long-term mining of natural colored sand is bound to cause damage to the ecological environment, and the transportation of colored stones requires the use of vehicles with larger capacity, which consumes a certain amount of energy resources, indirectly increasing the overall carbon emissions.

[0005] Therefore, it is urgent to develop a lightweight imitation stone paint and its preparation method, cancel the use of colored sand, use color paste plus ordinary white sand to replace the effect of colored sand, and use ordinary white sand of different mesh sizes to achieve real stone paint effects of different textures. Summary of the Invention

[0006] To address the above-mentioned problems, the present invention aims to provide a lightweight imitation stone coating and its preparation method. This invention eliminates the use of colored sand, replacing it with color paste, and uses ordinary white sand of different mesh sizes to replace the texture of different real stone paints, ultimately developing a lightweight imitation stone coating that can replace real stone paint. In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A lightweight stone-like paint comprising the following components by mass percentage: Protective glue 5-15%; Anti-settling slurry 1-5%; Contains 65~75% sand color dots; Continuous items 15~25%.

[0007] Preferably, the protective glue comprises the following components in parts by weight: 85-95 parts of pure water; 5-15 parts of protective glue powder.

[0008] Preferably, the protective rubber powder is one or a combination of magnesium aluminum silicate, modified magnesium aluminum silicate, and sheet silicate.

[0009] Preferably, the anti-settling slurry comprises the following components in parts by weight: 1-5 parts of cellulose high molecular polymer; 95-99 parts of pure water.

[0010] Preferably, the cellulose-based high molecular polymer is Greshi DC118N anti-settling agent.

[0011] Preferably, the sand-containing colored dots include the following components by weight: 5-15 parts of ordinary white sand with a mesh size of 30-70; 5-15 parts of ordinary white sand with a mesh size of 70-150.

[0012] Preferably, the sand-containing colored dots further include the following ingredients in parts by weight: 0.1-0.3 parts of fungicide; 0.1-0.5 parts of preservative; 1-3 parts of hydroxyethyl cellulose; 0.5-1 parts of propylene glycol; 0.1-0.5 parts of pH regulator; 0.3-0.8 parts of defoaming agent; 0.3-0.8 parts of dispersant; 0-3 parts of rutile titanium dioxide; 5-10 parts of kaolin; 20-30 parts of emulsion; 1-3 parts of anti-settling agent; 0.1-0.5 parts of thickener; 0-1.5 parts of color paste; 3-7 parts of protective glue; the balance per 100 parts is pure water.

[0013] Preferably, the continuous items include the following ingredients in parts by weight: 0.1-0.3 parts of bactericide; 0.1-0.5 parts of preservative; 1-3 parts of propylene glycol; 3-7 parts of lauryl alcohol; 0.05-0.2 parts of pH regulator; 0.1-0.3 parts of defoaming agent; 0.1-0.5 parts of thickener, 30-40 parts of emulsion; the balance per 100 parts is pure water.

[0014] Another object of the present invention is to disclose a method for preparing the above-mentioned lightweight stone-like coating, comprising the following steps: (1) Preparation of protective glue: First, add pure water to the dispersion tank, add protective rubber powder under stirring conditions of 1000-1200r / min, disperse until the protective rubber powder is fully dissolved and there is no granular feeling, and let it stand for 24 hours for use; (2) Preparation of anti-settling slurry: First, add pure water to the dispersion tank, add cellulose polymer under stirring conditions of 1000-1200r / min, and disperse until the cellulose polymer is fully dissolved and there is no particle feeling; (3) Preparation of sand-containing color dots: 1) Adjust the rotation speed of the dispersing machine to 300-500 r / min, slowly add 80% pure water, bactericide, preservative, hydroxyethyl cellulose, propylene glycol, pH adjuster, 50% defoaming agent, dispersant in the sand-containing color dot formula, after adding, adjust the rotation speed of the dispersing machine to 700-1000 r / min, slowly add rutile titanium dioxide and kaolin, after adding, adjust the rotation speed of the dispersing machine to 1000-1200 r / min, disperse for 30-40 min, then slowly add the remaining 50% defoaming agent, emulsion, anti-settling agent, thickening agent, 20% pure water, after adding, continue to disperse for 10-20 min, to obtain the base paint; 2) Adjust the rotation speed of the dispersing machine to 300-500 r / min, add 30-70 mesh white sand, 70-150 mesh white sand, protective glue in the base paint, mix uniformly, then add color paste to adjust the color of the color dots to the desired color to obtain the sand-containing color dots, and then put into a mixing cylinder for standby; (4) Preparation of continuous items: Adjust the rotation speed of the dispersing machine to 300-500 r / min, slowly add 80% pure water, bactericide, preservative, propylene glycol, pH adjuster, dodecanol, after adding, adjust the rotation speed to 800 rpm / min, disperse for 10 minutes, then add emulsion, defoaming agent, thickening agent, 20% pure water, disperse for 10 minutes for standby; (5) Adjust the rotation speed of the dispersing machine to 300-500 r / min, add protective glue, anti-settling paste, sand-containing color dots, continuous items in the light weight stone-like coating formula, mix uniformly, to obtain the light weight stone-like coating.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: The light weight stone-like coating of the present application takes sand-containing color dots as the main material, uses white sand with color paste to replace color sand, and adds white sand of different mesh to maintain the unique texture of real stone paint, the amount of white sand is only 20-30% of the amount of color sand in real stone paint, which greatly reduces the use amount of sandstone, reduces the load on the wall, and is beneficial to the protection of the wall. In addition, the consumption of light weight stone-like coating is only 1 / 3 of that of real stone paint, which can reduce carbon emissions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the effect after spraying the light weight stone-like coating prepared in Example 2 and the real stone paint prepared in Comparative Example 1, respectively. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific embodiments, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents and instruments used in the examples are all conventional products that can be obtained commercially. The experimental methods used in the examples, unless otherwise specified, are all conventional experimental methods or technical means in the art.

[0018] Example 1 A lightweight stone-like paint is prepared by the following steps: (1) Preparation of protective glue: The protective glue comprises the following components in parts by weight: 94 parts of pure water and 6 parts of protective glue powder (sheet silicate).

[0019] First add pure water to the dispersion tank, add protective rubber powder (sheet silicate) under stirring conditions of 1000-1200r / min, disperse until the protective rubber powder (sheet silicate) is fully dissolved and there is no granular feeling, and let it stand for 24 hours for use.

[0020] (2) Preparation of anti-settling slurry: The anti-settling slurry includes the following components in parts by weight: 1 part of cellulose high molecular polymer (Greshi DC118N anti-settling agent); 99 parts of pure water.

[0021] First, add pure water to the dispersion tank, add cellulose polymer under stirring conditions of 1000-1200r / min, disperse until the cellulose polymer is fully dissolved and there is no particle feeling, and let it stand for use.

[0022] (3) Preparation of sand-containing colored dots: The sand-containing colored dots are multi-colored dots and include the following ingredients by weight: bactericide (Thor's LPC1 bactericide) 0.1 part, preservative (Thor's BW20 preservative) 0.1 part, hydroxyethyl cellulose 1 part, propylene glycol 0.4 part, pH adjuster (Dow Chemical multifunctional additive APM95) 0.1 part, defoamer (Shanghai Guben Industrial Defoamer 1818) 0.5 part, dispersant (Sano Nopco's SN-DISPERSANT 5027) 0.4 part, rutile titanium dioxide 0.8 part, kaolin 5 parts, emulsion (Rossf New Materials NPEM021) 22 parts, anti-settling agent (Shanghai Grid International Trade Bentonite TEROGEL) KW) 1 part, thickener (Dow Chemical AR6159) 0.5 part, 30-70 mesh ordinary white sand 7 parts, 70-150 mesh ordinary white sand 13 parts, color paste 0.3 part, protective glue 3 parts, the balance is pure water based on 100 parts.

[0023] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide (Thor's LPC1 fungicide), preservative, hydroxyethyl cellulose, propylene glycol, pH regulator, 50% defoamer, and dispersant in the sand-containing color dot formula, and after adding, adjust the disperser speed to 700-1000r / min, slowly add rutile titanium dioxide and kaolin, and after adding, adjust the disperser speed to 1000-1200r / min, after dispersing for 30-40 minutes, slowly add the remaining 50% defoamer, emulsion, anti-settling agent, thickener, and 20% pure water, and continue dispersing for 10-20 minutes after adding to obtain the base paint; Adjust the speed of the disperser to 300-500r / min, add 30-70 mesh ordinary white sand, 70-150 mesh ordinary white sand and protective glue to the base paint, mix well and add color paste, and put it into the mixing tank after adjusting the color for later use.

[0024] (4) Preparation of continuous items: The consecutive items include the following ingredients in parts by weight: 0.1 part of fungicide (Thor's LPC1 fungicide), 0.1 part of preservative (Thor's BW20 preservative), 1 part of propylene glycol, 3 parts of lauryl alcohol, 0.1 part of pH adjuster (Dow Chemical multifunctional additive APM95), 30 parts of emulsion (Rossef New Materials NPEM024), 0.5 part of thickener (Dow Chemical AR6159), 0.1 part of defoamer (Shanghai Guben Industrial Defoamer 1818), and the balance per 100 parts is pure water.

[0025] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide, preservative, propylene glycol, pH regulator and lauryl alcohol, adjust the speed to 800rpm / min after adding, disperse for 10 minutes, then add thickener, defoamer, emulsion and the remaining 20% ​​pure water and disperse for 10 minutes for later use.

[0026] (5) Prepare a lightweight imitation stone coating by mixing the following mass percentages: protective adhesive 11%, anti-settling slurry 3%, sand-containing color dots 66%, and continuous product 20%. Adjust the disperser to 300-500 r / min, add the sand-containing color dots, protective adhesive, anti-settling slurry, and continuous product at once and mix them evenly to obtain the finished lightweight imitation stone coating.

[0027] Example 2 A lightweight stone-like paint is prepared by the following steps: (1) Preparation of protective glue: The protective rubber comprises the following components in parts by weight: 93 parts of pure water and 7 parts of protective rubber powder (sheet silicate).

[0028] First add pure water to the dispersion tank, add protective rubber powder (sheet silicate) under stirring conditions of 1000-1200r / min, disperse until the protective rubber powder (sheet silicate) is fully dissolved and there is no granular feeling, and let it stand for 24 hours for use.

[0029] (2) Preparation of anti-settling slurry: The anti-settling slurry includes the following components in parts by weight: 2 parts of cellulose high molecular polymer (Greshi DC118N anti-settling agent); 98 parts of pure water.

[0030] First, add pure water to the dispersion tank, add cellulose polymer under stirring conditions of 1000-1200r / min, disperse until the cellulose polymer is fully dissolved and there is no particle feeling, and let it stand for use.

[0031] (3) Preparation of sand-containing colored dots: The sand-containing colored dots are multi-colored dots and include the following ingredients by weight: bactericide (Thor's LPC1 bactericide) 0.2 parts, preservative (Thor's BW20 preservative) 0.2 parts, hydroxyethyl cellulose 1.5 parts, propylene glycol 0.6 parts, pH adjuster (Dow Chemical multifunctional additive APM95) 0.2 parts, defoamer (Shanghai Guben Industrial Defoamer 1818) 0.5 parts, dispersant (Sano Nopco's SN-DISPERSANT 5027) 0.6 parts, rutile titanium dioxide 1.2 parts, kaolin 7 parts, emulsion (Rossf New Materials NPEM021) 24 parts, anti-settling agent (Shanghai Grid International Trade Bentonite TEROGEL) KW) 1.5 parts, thickener (Dow Chemical AR6159) 0.2 parts, 30-70 mesh ordinary white sand 10 parts, 70-150 mesh ordinary white sand 10 parts, color paste 0.3 parts, protective glue 4 parts, the balance is pure water based on 100 parts.

[0032] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide (Thor's LPC1 fungicide), preservative, hydroxyethyl cellulose, propylene glycol, pH regulator, 50% defoamer, and dispersant in the sand-containing color dot formula, and after adding, adjust the disperser speed to 700-1000r / min, slowly add rutile titanium dioxide and kaolin, and after adding, adjust the disperser speed to 1000-1200r / min, after dispersing for 30-40 minutes, slowly add the remaining 50% defoamer, emulsion, anti-settling agent, thickener, and 20% pure water, and continue dispersing for 10-20 minutes after adding to obtain the base paint; Adjust the speed of the disperser to 300-500r / min, add 30-70 mesh ordinary white sand, 70-150 mesh ordinary white sand and protective glue to the base paint, mix well and add color paste, and put it into the mixing tank after adjusting the color for later use.

[0033] (4) Preparation of continuous items: The consecutive items include the following ingredients in parts by weight: 0.15 parts of fungicide (Thor's LPC1 fungicide), 0.15 parts of preservative (Thor's BW20 preservative), 1.2 parts of propylene glycol, 5 parts of lauryl alcohol, 0.15 parts of pH adjuster (Dow Chemical multifunctional additive APM95), 32 parts of emulsion (Rossef New Materials NPEM024), 0.5 parts of thickener (Dow Chemical AR6159), 0.1 parts of defoaming agent (Shanghai Guben Industrial Defoaming Agent 1818), and the balance per 100 parts is pure water.

[0034] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide, preservative, propylene glycol, pH regulator and lauryl alcohol, adjust the speed to 800rpm / min after adding, disperse for 10 minutes, then add thickener, defoamer, emulsion and the remaining 20% ​​pure water and disperse for 10 minutes for later use.

[0035] (5) Prepare a lightweight imitation stone coating by mixing the following mass percentages: protective adhesive 9%, anti-settling slurry 2%, sand-containing color dots 69.5%, and continuous product 19.5%. Adjust the disperser to 300-500 r / min, add the sand-containing color dots, protective adhesive, anti-settling slurry, and continuous product at once and mix them evenly to obtain the finished lightweight imitation stone coating.

[0036] Example 3 A lightweight stone-like paint is prepared by the following steps: (1) Preparation of protective glue: The protective rubber comprises the following components in parts by weight: 92 parts of pure water and 8 parts of protective rubber powder (sheet silicate).

[0037] First add pure water to the dispersion tank, add protective rubber powder (sheet silicate) under stirring conditions of 1000-1200r / min, disperse until the protective rubber powder (sheet silicate) is fully dissolved and there is no granular feeling, and let it stand for 24 hours for use.

[0038] (2) Preparation of anti-settling slurry: The anti-settling slurry includes the following components in parts by weight: 3 parts of cellulose high molecular polymer (Greshi DC118N anti-settling agent); 97 parts of pure water.

[0039] First, add pure water to the dispersion tank, add cellulose polymer under stirring conditions of 1000-1200r / min, disperse until the cellulose polymer is fully dissolved and there is no particle feeling, and let it stand for use.

[0040] (3) Preparation of sand-containing colored dots: The sand-containing colored dots are multi-colored dots and include the following ingredients by weight: bactericide (Thor's LPC1 bactericide) 0.15 parts, preservative (Thor's BW20 preservative) 0.15 parts, hydroxyethyl cellulose 2 parts, propylene glycol 0.6 parts, pH adjuster (Dow Chemical multifunctional additive APM95) 0.2, defoamer (Shanghai Guben Industrial Defoamer 1818) 0.5 parts, dispersant (Sano Nopco's SN-DISPERSANT 5027) 0.5 parts, rutile titanium dioxide 1.5 parts, kaolin 6 parts, emulsion (Rossf New Materials NPEM021) 25 parts, anti-settling agent (Shanghai Grid International Trade Bentonite TEROGEL) KW) 2 parts, thickener (Dow Chemical AR6159) 0.1 part, 30-70 mesh ordinary white sand 13 parts, 70-150 mesh ordinary white sand 7 parts, color paste 0.3 parts, protective glue 5 parts, the balance is pure water based on 100 parts.

[0041] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide (Thor's LPC1 fungicide), preservative, hydroxyethyl cellulose, propylene glycol, pH regulator, 50% defoamer, and dispersant in the sand-containing color dot formula, and after adding, adjust the disperser speed to 700-1000r / min, slowly add rutile titanium dioxide and kaolin, and after adding, adjust the disperser speed to 1000-1200r / min, after dispersing for 30-40 minutes, slowly add the remaining 50% defoamer, emulsion, anti-settling agent, thickener, and 20% pure water, and continue dispersing for 10-20 minutes after adding to obtain the base paint; Adjust the speed of the disperser to 300-500r / min, add 30-70 mesh ordinary white sand, 70-150 mesh ordinary white sand and protective glue to the base paint, mix well and add color paste, and put it into the mixing tank after adjusting the color for later use.

[0042] (4) Preparation of continuous items: The consecutive items include the following ingredients in parts by weight: 0.1 part of fungicide (Thor's LPC1 fungicide), 0.2 part of preservative (Thor's BW20 preservative), 2 parts of propylene glycol, 5 parts of lauryl alcohol, 0.1 part of pH adjuster (Dow Chemical multifunctional additive APM95), 35 parts of emulsion (Rossef New Materials NPEM024), 0.3 part of thickener (Dow Chemical AR6159), 0.2 part of defoaming agent (Shanghai Guben Industrial Defoaming Agent 1818), and the balance per 100 parts is pure water.

[0043] Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide, preservative, propylene glycol, pH regulator and lauryl alcohol, adjust the speed to 800rpm / min after adding, disperse for 10 minutes, then add thickener, defoamer, emulsion and the remaining 20% ​​pure water and disperse for 10 minutes for later use.

[0044] (5) Prepare a lightweight imitation stone coating by mixing the following mass percentages: 8% protective adhesive, 1.5% anti-settling slurry, 70% sand-containing color dots, and 20.5% continuous product. Adjust the disperser to 300-500 r / min, add the sand-containing color dots, protective adhesive, anti-settling slurry, and continuous product at once and mix them evenly to obtain the finished lightweight imitation stone coating.

[0045] Comparative Example 1 A real stone paint comprises the following components by mass percentage: 25% real stone paint base paint, 74.8% colored sand, 0.1% defoaming agent, and 0.1% 50% titanium dioxide slurry.

[0046] The preparation method is as follows: (1) Preparation of real stone paint base paint: The base paint includes the following ingredients in parts by weight: 0.1 part of fungicide (Thor's LPC1 fungicide), 0.1 part of preservative (Thor's BW20 preservative), 1 part of hydroxyethyl cellulose, 1 part of ethylene glycol, 3 parts of lauryl alcohol, 0.1 part of pH adjuster (Dow Chemical multifunctional additive APM95), 0.3 part of defoamer (Shanghai Guben Industrial Defoamer 1860), 0.5 part of dispersant (SN-DISPERSANT 5027 of San Nopco), 40 parts of emulsion (Badford NPE999 emulsion), 0.1 part of thickener (Dow Chemical AR6159), and the balance per 100 parts is pure water.

[0047] Adjust the disperser speed to 300-500r / min, and slowly add 80% pure water, fungicide (Thor's LPC1 fungicide), preservative, hydroxyethyl cellulose, ethylene glycol, lauryl alcohol, pH adjuster, 50% defoamer, and dispersant in the base paint formula. After adding, adjust the disperser speed to 700-1000r / m. After dispersing for 3-5 minutes, slowly add the remaining 50% defoamer, emulsion, thickener, and 20% pure water. After adding, continue dispersing for 10-20 minutes to obtain the base paint. (2) Preparation of real stone paint: After the base paint is made, add colored sand to adjust the color to meet the requirements, then add 0.1% defoaming agent and 0.1% 50% titanium dioxide slurry, and mix them to obtain the finished real stone paint.

[0048]

[0049] The coatings prepared in Example 2 and Comparative Example 1 were sprayed separately to obtain the following Figure 1 Schematic diagram of the real stone paint spraying effect shown in Example 2 ( Figure 1 Left) The minimum dosage is 1.0kg / m², comparative example 1 ( Figure 1 (right) The minimum usage is 3.0kg / m². This shows that the lightweight stone-like paint of Example 2 can significantly reduce spraying consumption, achieving the same effect with only one-third the amount of ordinary real stone paint, thereby reducing carbon emissions.

[0050] Under the same spraying effect, the lightweight imitation stone paint of Example 2 greatly reduces the amount of sand and gravel used. At the same time, the specific gravity of the lightweight imitation stone paint of Example 2 is much lower than that of the real stone paint of Comparative Example 1, which can reduce the load-bearing capacity of the wall and is beneficial to the protection of the wall.

[0051] The performance of Examples 1-3 (Samples 1-3) was compared with that of the produced real stone paint (Comparative Example 1) and the commercially available real stone paint (Sankeshu ZS-1012) according to the HG / T 4343-2024 "Water-based Multi-color Architectural Coatings" standard, as shown in Table 1.

[0052]

[0053]

[0054] In summary, the embodiments of the present invention have the following beneficial effects: Compared with real stone paint, the specific gravity of lightweight imitation stone paint is reduced by 50%, which is convenient for construction and transportation. The stain resistance and bonding strength of lightweight imitation stone paint are better than those of original real stone paint, so it can replace real stone paint.

[0055] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A lightweight stone-like paint, characterized in that: It includes the following components in percentage by mass: Protective glue 5-15%; Anti-settling slurry 1-5%; Contains 65~75% sand color dots; Continuous items 15~25%.

2. A lightweight stone-like paint according to claim 1, characterized in that: The protective glue comprises the following components in parts by weight: 85-95 parts of pure water and 5-15 parts of protective glue powder.

3. A lightweight stone-like paint according to claim 2, characterized in that: The protective rubber powder is one or a combination of magnesium aluminum silicate, modified magnesium aluminum silicate, and sheet silicate.

4. A lightweight stone-like paint according to claim 1, characterized in that: The anti-settling slurry comprises the following components in parts by weight: 1-5 parts of cellulose high molecular polymer; 95-99 parts of pure water.

5. A lightweight stone-like paint according to claim 1, characterized in that: The sand-containing colored dots include the following components by weight: 5-15 parts of 30-70 mesh ordinary white sand; 5-15 parts of 70-150 mesh ordinary white sand.

6. The lightweight stone-like paint according to claim 1, characterized in that: The sand-containing colored dots also include the following ingredients in parts by weight: 0.1-0.3 parts of fungicide; 0.1-0.5 parts of preservative; 1-3 parts of hydroxyethyl cellulose; 0.5-1 parts of propylene glycol; 0.1-0.5 parts of pH regulator; 0.3-0.8 parts of defoamer; 0.3-0.8 parts of dispersant; 0-3 parts of rutile titanium dioxide; 5-10 parts of kaolin; 20-30 parts of emulsion; 1-3 parts of anti-settling agent; 0.1-0.5 parts of thickener; 0-1.5 parts of color paste; 3-7 parts of protective glue; the balance based on 100 parts is pure water.

7. The lightweight stone-like paint according to claim 1, characterized in that: The continuous items include the following components in parts by weight: 0.1-0.3 parts of bactericide; 0.1-0.5 parts of preservative; 1-3 parts of propylene glycol; 3-7 parts of lauryl alcohol; 0.05-0.2 parts of pH regulator; 0.1-0.3 parts of defoaming agent; 0.1-0.5 parts of thickener, 30-40 parts of emulsion; the balance based on 100 parts is pure water.

8. The method for preparing a lightweight stone-like coating according to any one of claims 1 to 7, wherein: The following steps are involved: (1) Preparation of protective glue: First, add pure water to the dispersion tank, add protective rubber powder under stirring conditions of 1000-1200r / min, disperse until the protective rubber powder is fully dissolved and there is no granular feeling, and let it stand for 24 hours for use; (2) Preparation of anti-settling slurry: First, add pure water to the dispersion tank, add cellulose polymer under stirring conditions of 1000-1200r / min, and disperse until the cellulose polymer is fully dissolved and there is no particle feeling; (3) Preparation of sand-containing colored dots: 1) Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide, preservative, hydroxyethyl cellulose, propylene glycol, pH regulator, 50% defoamer and dispersant in the sand-containing color point formula, and then adjust the disperser speed to 700-1000r / min, slowly add rutile titanium dioxide and kaolin, and then adjust the disperser speed to 1000-1200r / min, disperse for 30-40 minutes, and then slowly add the remaining 50% defoamer, emulsion, anti-settling agent, thickener and 20% pure water, and then continue to disperse for 10-20 minutes to obtain the base paint; 2) Adjust the speed of the disperser to 300-500r / min, add 30-70 mesh ordinary white sand, 70-150 mesh ordinary white sand, and protective glue to the base paint, mix well, add color paste to adjust to the required color point to obtain the sand-containing color point, and then put it into the mixing tank for standby; (4) Preparation of continuous items: Adjust the disperser speed to 300-500r / min, slowly add 80% pure water, fungicide, preservative, propylene glycol, pH regulator, and lauryl alcohol. After adding, adjust the speed to 800rpm / min and disperse for 10 minutes. Then add emulsion, defoamer, thickener, and 20% pure water and disperse for 10 minutes. (5) Adjust the speed of the disperser to 300-500 r / min, add the protective glue, anti-settling slurry, sand-containing color dots, and continuous items in the formula of the lightweight imitation stone paint, mix them evenly, and obtain the lightweight imitation stone paint.

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