Real stone paint prepared from liquid colored sand and granulation liquid and preparation method thereof

Abstract

The present application belongs to the technical field of architectural coatings, and discloses a real stone paint coating prepared from liquid colored sand and granulation liquid and a preparation method thereof. The real stone paint coating prepared from the liquid colored sand and granulation liquid comprises liquid colored sand and granulation liquid, wherein the raw materials of the liquid colored sand comprise titanium dioxide, kaolin, quartz sand, cellulose, modified acrylate emulsion, protective glue solution and water; the raw materials of the granulation liquid comprise modified acrylate emulsion, surfactant, sodium carboxymethyl cellulose, propylene glycol, protective glue solution and water; the raw materials of the modified acrylate emulsion comprise comonomer, fluorine modifier, initiator and emulsifier. The preparation method of the real stone paint coating prepared from the liquid colored sand and granulation liquid comprises the following steps: (1) preparing protective glue latex; (2) preparing liquid colored sand and mixing it with the protective glue latex to prepare the real stone paint coating prepared from the liquid colored sand and granulation liquid. The real stone paint prepared by the present application from liquid colored sand and granulation liquid is more environmentally friendly, has better color stability, strong water resistance and good decorative effect.

Description

Technical Field

[0001] The present application relates to the technical field of architectural coatings, and in particular to a real stone paint prepared from liquid colored sand and granulation liquid and a preparation method thereof. Background Art

[0002] As one of the most successful imitation stone paint products, natural stone paint has been developing in the domestic market for nearly 20 years. Its primary raw material is natural colored sand, a resource that has been dwindling in recent years. This has significantly lengthened the production, color matching, and delivery cycles of traditional natural stone paint due to issues like sand availability and batch sizes. Furthermore, natural stone paint presents numerous challenges, such as the tendency for joints to become brittle and sand to fall off during application, sand to fall off during spraying, and water-whitening after rain. Therefore, to improve the environmental performance, color stability, application properties, and water-whitening resistance of existing natural stone paint, a new natural stone paint product, using liquid colored sand as its primary raw material, was developed. Summary of the Invention

[0003] In order to solve at least one of the above technical problems, a real stone paint coating made of liquid colored sand and granulation liquid with good color stability, water resistance, decorative effect, etc. is developed. The present application provides a real stone paint coating made of liquid colored sand and granulation liquid and a preparation method.

[0004] On the one hand, the present application provides a real stone paint made of liquid colored sand and granulation liquid, comprising liquid colored sand and granulation liquid in a weight ratio of 1:0.5-0.8; the liquid colored sand comprises the following raw materials in parts by weight: 1-5 parts of titanium dioxide, 1-8 parts of kaolin, 30-50 parts of quartz sand, 2-5 parts of cellulose, 30-50 parts of modified acrylate emulsion, 5-10 parts of protective glue solution, and 20-30 parts of water; the raw materials of the modified acrylate emulsion include a weight ratio of The comonomer, fluorine modifier, initiator and emulsifier are in a ratio of 120-150:10-13:1-2:7-12; the granulation liquid comprises 35-45 parts of modified acrylate emulsion, 0.2-1 part of surfactant, 1-2.5 parts of sodium carboxymethyl cellulose, 1-2 parts of propylene glycol, 1-5 parts of protective glue solution and 25-35 parts of water; the protective glue solution is prepared by diluting and dispersing lithium magnesium silicate in water; wherein the weight ratio of lithium magnesium silicate to water is 1:10.

[0005] By adopting the above-mentioned technical solution, the present invention adopts liquid colored sand gel particle technology, that is, using modified acrylic ester emulsion and liquid colored sand for blending, and using a new production process, to produce liquid colored sand that can be freely adjusted in color, has high toughness, fine particle size, and plump and clear particles. Liquid colored sand is used as the main material to produce a new type of liquid real stone paint. Fluorine modifiers are organic fluorine compounds, which are a class of elemental organic compounds in which the hydrogen attached to the carbon atom in the compound is replaced by fluorine. They have properties such as low surface energy, chemical resistance, and high temperature resistance. Introducing organic fluorine compounds into acrylic ester emulsions can effectively improve their water resistance and stain resistance. The water resistance of the material is mainly improved by graft copolymerization of fluorine-containing organic monomers with acrylic ester monomers. When the modified acrylic ester emulsion is produced, when the amount of fluorine modifier accounts for 5% of the number of monomers in the system, the contact angle of the resulting real stone paint coating reaches about 95°. Further increasing the amount of fluorine modifier, the contact angle does not increase significantly. Increasing the contact angle can significantly improve the water resistance of the real stone paint coating. The addition of sodium carboxymethyl cellulose improves the surface smoothness of natural stone paint, reduces surface unevenness and porosity, and thus enhances its stain resistance. Using a lithium magnesium silicate aqueous solution as a protective colloid significantly enhances the coating stability, mechanical properties, adhesion, and aging resistance of the resulting natural stone paint.

[0006] Furthermore, the granulation liquid includes 42 parts of modified acrylate emulsion, 0.6 parts of surfactant, 2 parts of sodium carboxymethyl cellulose, 1-2 parts of propylene glycol, 1-5 parts of protective glue solution, and 25-35 parts of water.

[0007] Optionally, the fluorine modifier is perfluorooctyl methacrylate.

[0008] Optionally, the modified acrylate emulsion is prepared by adding a comonomer, a solvent and an initiator into a reactor, maintaining the temperature at 80-90° C., reacting for 4-5 hours, adding a fluorine modifier and an initiator, reacting for 1-2 hours, adding an emulsifier and stirring for 20-30 minutes to obtain the modified acrylate emulsion.

[0009] Optionally, the comonomer is one or more of methyl methacrylate, butyl acrylate and methacrylic acid.

[0010] Furthermore, the comonomer is a mixture of methyl methacrylate, butyl acrylate and methacrylic acid, wherein the comonomer contains 50-65 wt% of methyl methacrylate.

[0011] By adopting the above technical solution, the glass transition temperature is the lowest temperature at which the polymer chain segments can move. By adjusting the proportion of each component in the comonomer, the glass transition temperature of the modified acrylic emulsion can be designed. Before the glass transition temperature rises to 30°C, the contact angle has been on an upward trend, and the subsequent growth trend becomes very slow. The principle is that the increase in the glass transition temperature reflects the increase in the proportion of hard monomers in the modified acrylic emulsion. The reason for the slow increase in the contact angle after 30°C is that the molecular weight of the polymer on the surface of the real stone paint coating is too large, which reduces the flexibility of the surface of the real stone paint coating. The fluorine-containing side chains on the surface of the coating cannot be completely aggregated on the surface of the coating to play a role, so the hydrophobicity is reduced.

[0012] Furthermore, the surfactant is a gemini surfactant, and the surfactant is tetramethyldecynediol.

[0013] Optionally, the sodium carboxymethyl cellulose is modified sodium carboxymethyl cellulose, and the preparation method of the modified sodium carboxymethyl cellulose is: adding a solvent and sodium carboxymethyl cellulose to a reaction vessel, heating to 70-85°C, adding epichlorohydrin while stirring, reflux reaction, filtering, washing, and taking the filter residue to obtain modified sodium carboxymethyl cellulose; wherein the weight ratio of the sodium carboxymethyl cellulose to epichlorohydrin is 1:0.5-0.7.

[0014] Optionally, the preparation method of the granulation liquid is: adding a surfactant, water, and propylene glycol to a mixer, adjusting the speed to 800-1000 r / min, stirring for 20-30 minutes, adding sodium carboxymethyl cellulose and a protective glue solution, stirring and dispersing for 30-60 minutes, adding a modified acrylic ester emulsion, adjusting the speed to 500-800 r / min, stirring for 5-10 minutes, and preparing the granulation liquid.

[0015] In a second aspect, the present application provides a method for preparing the above-mentioned real stone paint prepared from liquid colored sand and granulation liquid, comprising the following steps:

[0016] Add water, titanium dioxide, kaolin, cellulose and additives into a dispersion kettle, disperse at a high speed of 1000-1500 r / min for 25-40 minutes, add modified acrylic emulsion, protective glue solution and quartz sand, stir for 10-20 minutes to obtain liquid colored sand, mix the liquid colored sand and granulation liquid and stir for 3-5 minutes to obtain a real stone paint made of liquid colored sand and granulation liquid.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects:

[0018] 1. The present invention adopts liquid colored sand to make real stone paint, thereby improving the problems of current real stone paint caused by the large-scale use of natural colored sand, such as environmental pollution, poor color stability, easy joints and sand loss during construction, and poor water resistance, while also improving the decorative effect.

[0019] 2. The present invention utilizes granulation liquid to cross-link and associate with modified acrylic ester emulsion and cellulose in liquid colored sand, and the stability, bonding performance, mechanical properties and aging resistance of the prepared real stone paint coating are significantly enhanced.

[0020] 3. Currently, most of the colorful real stone paints on the market require multiple components such as base paint, continuous phase and protective colloid for mixing. The materials are complicated and the product performance is unstable. The main components of the real stone paint prepared in this application are only liquid colored sand and granulation liquid. The configuration steps are simple, the product performance is stable, and it also has good aging resistance, color stability, water resistance and easy construction. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the embodiments.

[0022] The present application designs a real stone paint made of liquid colored sand and granulation liquid, comprising liquid colored sand and granulation liquid in a weight ratio of 1:0.5-0.8; the liquid colored sand comprises the following raw materials in parts by weight: 1-5 parts of titanium dioxide, 1-8 parts of kaolin, 30-50 parts of quartz sand, 2-5 parts of cellulose, 30-50 parts of modified acrylic emulsion, 5-10 parts of protective glue solution, and 20-30 parts of water; the raw materials of the modified acrylic emulsion comprise the following raw materials ... The invention relates to a granulating liquid comprising a copolymerizable monomer, a fluorine modifier, an initiator and an emulsifier in a ratio of 20-150:10-13:1-2:7-12; the granulating liquid comprises 35-45 parts of a modified acrylate emulsion, 0.2-1 parts of a surfactant, 1-2.5 parts of sodium carboxymethyl cellulose, 1-2 parts of propylene glycol, 1-5 parts of a protective glue solution and 25-35 parts of water; the protective glue solution is prepared by diluting and dispersing lithium magnesium silicate in water; wherein the weight ratio of lithium magnesium silicate to water is 1:10.

[0023] The fluorine modifier is perfluorooctyl methacrylate.

[0024] The preparation method of the modified acrylate emulsion comprises the following steps: adding a comonomer, a solvent and an initiator into a reaction kettle, maintaining the temperature at 80-90° C., reacting for 4-5 hours, adding a fluorine modifier and an initiator, reacting for 1-2 hours, adding an emulsifier and stirring for 20-30 minutes to obtain the modified acrylate emulsion.

[0025] The comonomer is one or more of methyl methacrylate, butyl acrylate and methacrylic acid.

[0026] The comonomer is a mixture of methyl methacrylate, butyl acrylate and methacrylic acid, wherein the comonomer contains 50-65 wt% of methyl methacrylate.

[0027] The surfactant is a gemini surfactant, and the surfactant is tetramethyldecynediol.

[0028] The sodium carboxymethyl cellulose is modified sodium carboxymethyl cellulose. The preparation method of the modified sodium carboxymethyl cellulose is as follows: adding a solvent and sodium carboxymethyl cellulose into a reaction container, heating to 70-85° C., adding epichlorohydrin while stirring, reflux reaction, filtering, washing, and collecting the filter residue to obtain the modified sodium carboxymethyl cellulose; wherein the weight ratio of the sodium carboxymethyl cellulose to the epichlorohydrin is 1:0.5-0.7.

[0029] The real stone paint coating prepared from liquid colored sand and granulation liquid of the present application is prepared by the following method, comprising the following steps: adding water, titanium dioxide, kaolin, cellulose and additives into a dispersion kettle, dispersing at a high speed of 1000-1500 r / min for 25-40 minutes, adding modified acrylic emulsion, protective glue solution and quartz sand, stirring for 10-20 minutes to obtain liquid colored sand, mixing the liquid colored sand and granulation liquid and stirring for 3-5 minutes to obtain the real stone paint coating prepared from the liquid colored sand and granulation liquid.

[0030] The technical problem to be solved by this application is that traditional real stone paint is affected by the supply and batch of colored sand, the color between different batches is unstable, color difference is very easy to occur, and problems such as flowery joints and sand falling off are very easy to occur during construction. There is also sand falling during construction spraying, and water whitening occurs after rain. This application uses liquid colored sand to make real stone paint, thereby improving the current real stone paint caused by the large-scale use of natural colored sand, which is not environmentally friendly, has poor color stability, is easy to flowery joints and sand falling off during construction, and has poor water resistance, while also improving the decorative effect. The present invention utilizes two different protective glues to cross-link and associate with modified acrylic emulsions and cellulose, and the stability, mechanical properties and aging resistance of the prepared real stone paint coating are significantly enhanced.

[0031] The sources of the raw materials of the components used in the examples of this application are as follows:

[0032] Perfluorooctyl methacrylate, Shanghai Haohong Biopharmaceutical Technology Co., Ltd.;

[0033] Emulsifier DSB, Shanghai Sangjing Chemical Co., Ltd.;

[0034] Methyl methacrylate, butyl acrylate, and methacrylic acid, Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0035] Azobisisobutyronitrile, Shanghai Jizhi Biochemical Technology Co., Ltd.;

[0036] Lithium magnesium silicate, Nanjing Bermuda Biotechnology Co., Ltd.;

[0037] Sodium carboxymethyl cellulose, Hebei Hongtao Bioengineering Co., Ltd.;

[0038] Tetramethyldecynediol, Beijing Lingbao Technology Co., Ltd.;

[0039] Propylene glycol, Jiangsu Plus Biotechnology Co., Ltd.;

[0040] Titanium dioxide, R219, Shanghai Qiju Chemical Co., Ltd.;

[0041] Quartz sand, S818464, Shanghai MacLean Biochemical Technology Co., Ltd.;

[0042] Hydroxyethyl cellulose, Guangdong Wengjiang Chemical Reagent Co., Ltd.;

[0043] Polyethylene glycol, Beijing Wokai Biotechnology Co., Ltd.;

[0044] Polydimethylsiloxane and polydimethylsiloxane esters, Tianjin Xiensi Biochemical Technology Co., Ltd.

[0045] Preparation Examples 1-5

[0046] Preparation Examples 1-5 are modified acrylic emulsions prepared with different raw material ratios, as shown in Table 1.

[0047] Table 1

[0048]

[0049] In the comonomers in Preparation Example 1-5, the weight fraction of methyl methacrylate was 60 wt %, the weight fraction of butyl acrylate was 20 wt %, and the weight fraction of acrylic acid was 20 wt %.

[0050] The initiator used in Preparation Example 1-5 was azobisisobutyronitrile.

[0051] The fluorine modifier used in Preparation Example 1-5 is perfluorooctyl methacrylate.

[0052] The emulsifier used in Preparation Examples 1-5 was DSB.

[0053] The preparation method of Preparation Example 1-5 is:

[0054] The comonomer, anhydrous ethanol and initiator were added into the reactor, the temperature was maintained at 85°C, the reaction was carried out for 4.5 hours, the fluorine modifier and initiator were added, the reaction was continued under reflux for 1.5 hours, the emulsifier was added and stirred for 25 minutes to obtain a modified acrylic ester emulsion.

[0055] Preparation Examples 6-10

[0056] Preparation Examples 6-10 are granulation liquids prepared with different raw material ratios, as shown in Table 2.

[0057] Table 2

[0058]

[0059]

[0060] The surfactant used in Preparation Examples 6-10 was tetramethyldecynediol.

[0061] Preparation Example 6-10 also includes 1 kg of dispersant, 0.5 kg of defoaming agent, 1 kg of film-forming aid and 0.2 kg of bactericidal preservative, wherein the dispersant is polyethylene glycol, the defoaming agent is polydimethylsiloxane, the film-forming aid is alcohol ester twelve, and the bactericidal preservative is Dovihill-75.

[0062] The preparation method of Preparation Example 6-10 is:

[0063] Add surfactant, water and propylene glycol to the mixer, adjust the speed to 900 r / min, stir for 25 minutes, add sodium carboxymethyl cellulose and protective glue solution, stir and disperse for 45 minutes, add modified acrylate emulsion, adjust the speed to 600 r / min, stir for 8 minutes to prepare granulation liquid.

[0064] Preparation Examples 11-15

[0065] Preparation Examples 11-15 are liquid colored sands made with different raw material ratios, as shown in Table 3.

[0066] Table 3

[0067]

[0068] The cellulose in Preparation Examples 11-15 is hydroxyethyl cellulose.

[0069] The preparation method of Preparation Examples 11-15 is:

[0070] Add water, titanium dioxide, kaolin, cellulose and additives into a dispersion kettle, adjust the speed to 1200r / min and perform high-speed dispersion for 30 minutes, add modified acrylic emulsion, quartz sand and protective glue solution, stir for 15 minutes to obtain liquid colored sand.

[0071] Examples 1-13

[0072] Examples 1-13 are real stone paints made from different raw material ratios, as shown in Table 3.

[0073] Among them, the weight ratio of liquid colored sand and protective latex is 1:0.5.

[0074] Table 4

[0075]

[0076]

[0077] The preparation process of Examples 1-13 is as follows:

[0078] The liquid colored sand and the granulation liquid were mixed and stirred for 4 minutes to prepare a real stone paint made of the liquid colored sand and the granulation liquid.

[0079] Examples 14-15

[0080] Example 14 is based on Example 2, except that the weight ratio of liquid colored sand to protective latex in Example 14 is 1:0.6.

[0081] Example 15 is based on Example 2, except that the weight ratio of liquid colored sand to protective latex in Example 15 is 1:0.8.

[0082] Examples 16-17

[0083] Example 16 is based on Example 2, with the difference that: in the comonomers of the modified acrylic ester emulsion in Example 16, methyl methacrylate accounts for 53 wt%, butyl acrylate accounts for 20 wt%, and acrylic acid accounts for 27 wt%.

[0084] Example 17 is based on Example 2, with the difference that: in the comonomers of the modified acrylic ester emulsion in Example 17, methyl methacrylate accounts for 45 wt%, butyl acrylate accounts for 30 wt%, and acrylic acid accounts for 25 wt%.

[0085] Example 18

[0086] Example 18 is based on Example 2, except that: the sodium carboxymethyl cellulose used in the granulation liquid in Example 18 is modified sodium carboxymethyl cellulose, and the preparation method of the modified sodium carboxymethyl cellulose is as follows: adding dimethylformamide solvent and sodium carboxymethyl cellulose to a reaction vessel, heating to 80°C, adding epichlorohydrin while stirring, reflux reaction, filtering, washing, and taking the filter residue to obtain modified sodium carboxymethyl cellulose; wherein the weight ratio of the sodium carboxymethyl cellulose to epichlorohydrin is 1:0.6.

[0087] Example 19

[0088] Example 19 is based on Example 2, except that the surfactant used in the granulation liquid in Example 19 is sodium dodecylbenzenesulfonate.

[0089] Comparative Examples 1-5

[0090] Comparative Example 1 is based on Example 2, except that the weight ratio of the liquid colored sand to the granulation liquid in Comparative Example 1 is 1:1.

[0091] Comparative Example 2 is based on Example 2, except that sodium carboxymethyl cellulose is not added to the granulation liquid in Comparative Example 2.

[0092] Comparative Example 3 is based on Example 2, except that the sodium carboxymethyl cellulose is replaced by methyl cellulose in the granulating liquid of Comparative Example 3.

[0093] Comparative Example 4 is based on Example 2, except that: in Comparative Example 4, the lithium magnesium silicate in the protective glue solution is replaced with a polyurethane thickener.

[0094] Comparative Example 5 is based on Example 2, with the difference that no fluorine modifier is used in Comparative Example 5, that is, the modified acrylate emulsion is changed to acrylate emulsion.

[0095] Performance testing

[0096] 1. Stain Resistance Test: Test panels were prepared according to JG / T 24-2000, "Synthetic Resin Emulsion Sandwall Architectural Coatings." The stone-like paints prepared in Examples 1-21 and Comparative Examples 1-5 were applied to the corresponding test panels. Fly ash was used as the pollution source, with a particle size distribution of 180-200 mesh (20%), 200-250 mesh (30%), and 250-325 mesh (50%). The reflectance was 25-30%, and the loss on ignition was 2-5%. 100g of fly ash and 100g of water were weighed using a balance and placed in a wide-mouthed container, stirring evenly to create a 1:1 fly ash-water ratio. The coated test panel was placed face down in a 1:1 fly ash-water ratio, then placed horizontally for 5 seconds. After drying for 2 hours in a standard environment, a rinse test was performed according to the test apparatus and test method specified in GB / T 9780-2013. After five cycles, the rating was assessed, as shown in Table 5.

[0097] Table 5

[0098]

[0099]

[0100] 2. Artificial Weathering Resistance Test: This test is conducted in accordance with GB / T 1865-2009, "Paints and varnishes - Artificial Weathering and Artificial Radiation Exposure to Filtered Xenon Arc Radiation." The radiation source is a xenon lamp using a daylight filter, with a wavelength between 300 and 400 nm and an average irradiance of 60 W / m². The surface is manually inspected and evaluated, with the lower the grade, the better the artificial weathering resistance. Grade 0: No cracking or chipping; Grade 1: No cracking, slight chipping; Grade 2: Slight cracking and minor chipping; Grade 3: Minor cracking and minor chipping; Grade 4: Multiple cracks and significant chipping; Grade 5: Significant cracking and severe chipping.

[0101] 3. Bond strength test: Referring to the standard JG / T24-2018 "Synthetic resin emulsion sand-walled architectural coatings", each of Examples 1-21 and Comparative Examples 1-5 was tested for bond strength and water resistance.

[0102] Table 6

[0103]

[0104]

[0105] Table 7

[0106]

[0107] Table 8

[0108]

[0109] By analyzing the data in Tables 6 and 7 and comparing Examples 1-13 with Comparative Examples 1-5, it can be seen that only when the granulation liquid contains the following ratios, namely 35-45 parts of modified acrylate emulsion, 0.2-1 parts of surfactant, and 1-2.5 parts of sodium carboxymethyl cellulose; the stain resistance and aging resistance of the real stone paint prepared from liquid colored sand and granulation liquid are the best performance; it can be seen from Comparative Examples 2-5 that by replacing sodium carboxymethyl cellulose in the granulation liquid with other cellulose, the stain resistance and bonding strength of the real stone paint prepared from liquid colored sand and granulation liquid will be significantly affected; when the acrylate in the granulation liquid is not modified with a fluorine modifier, the bonding strength and aging resistance of the real stone paint prepared from liquid colored sand and granulation liquid will be significantly reduced.

[0110] By analyzing the data in Table 8 and comparing Example 2 with Examples 14-21, it can be seen that by comparing Example 2 with Examples 16 and 17, when the glass transition temperature of the modified acrylate emulsion is lowered by changing the type and number of monomers during the polymerization and cross-linking of the modified acrylate emulsion, when 50-65wt% of methyl methacrylate (hard monomer) is contained in the comonomer, the obtained real stone paint prepared from liquid colored sand and granulation liquid has better water resistance; by comparing Example 2 with Examples 18 and 19, it can be seen that by using modified sodium carboxymethyl cellulose in the granulation liquid, the stain resistance and water resistance of the real stone paint prepared from liquid colored sand and granulation liquid are significantly improved; thereby affecting the overall stain resistance, aging resistance and water resistance of the real stone paint prepared from liquid colored sand and granulation liquid.

[0111] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A real stone paint made from liquid colored sand and granulation liquid, characterized in that: It includes liquid colored sand and granulation liquid in a weight ratio of 1:0.5-0.8; The liquid colored sand comprises the following raw materials in parts by weight: 1-5 parts of titanium dioxide, 1-8 parts of kaolin, 30-50 parts of quartz sand, 2-5 parts of cellulose, 30-50 parts of modified acrylic emulsion, 5-10 parts of protective glue solution, and 20-30 parts of water; The granulation liquid comprises 35-45 parts of modified acrylate emulsion, 0.2-1 parts of surfactant, 1-2.5 parts of sodium carboxymethyl cellulose, 1-2 parts of propylene glycol, 1-5 parts of protective glue solution, and 25-35 parts of water; The raw materials of the modified acrylic ester emulsion include a comonomer, a fluorine modifier, an initiator and an emulsifier in a weight ratio of 120-150:10-13:1-2:7-12; The protective glue solution is prepared by diluting and dispersing lithium magnesium silicate in water; wherein the weight ratio of lithium magnesium silicate to water is 1:

10.

2. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The granulation liquid comprises 42 parts of modified acrylate emulsion, 0.6 parts of surfactant, 2 parts of sodium carboxymethyl cellulose, 1-2 parts of propylene glycol, 1-5 parts of protective glue solution, and 25-35 parts of water.

3. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The fluorine modifier is perfluorooctyl methacrylate.

4. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The preparation method of the modified acrylate emulsion comprises the following steps: adding a comonomer, a solvent and an initiator into a reaction kettle, maintaining the temperature at 80-90° C., reacting for 4-5 hours, adding a fluorine modifier and an initiator, reacting for 1-2 hours, adding an emulsifier and stirring for 20-30 minutes to obtain the modified acrylate emulsion.

5. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The comonomer is one or more of methyl methacrylate, butyl acrylate and methacrylic acid.

6. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The comonomer is a mixture of methyl methacrylate, butyl acrylate and methacrylic acid, wherein the comonomer contains 50-65 wt% of methyl methacrylate.

7. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The surfactant is a gemini surfactant, and the gemini surfactant is tetramethyldecynediol.

8. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The sodium carboxymethyl cellulose is modified sodium carboxymethyl cellulose. The preparation method of the modified sodium carboxymethyl cellulose is as follows: adding a solvent and sodium carboxymethyl cellulose into a reaction container, heating to 70-85° C., adding epichlorohydrin while stirring, reflux reaction, filtering, washing, and collecting the filter residue to obtain the modified sodium carboxymethyl cellulose; wherein the weight ratio of the sodium carboxymethyl cellulose to the epichlorohydrin is 1:0.5-0.

7.

9. The real stone paint prepared from liquid colored sand and granulation liquid according to claim 1, characterized in that: The preparation method of the granulation liquid comprises the following steps: adding a surfactant, water, and propylene glycol to a stirrer, adjusting the rotation speed to 800-1000 r / min, stirring for 20-30 minutes, adding sodium carboxymethyl cellulose and a protective glue solution, stirring and dispersing for 30-60 minutes, adding a modified acrylic ester emulsion, adjusting the rotation speed to 500-800 r / min, stirring for 5-10 minutes, and preparing the granulation liquid.

10. A method for preparing a real stone paint made from liquid colored sand and granulation liquid according to any one of claims 1 to 9, characterized in that: The following steps are involved: Add water, titanium dioxide, kaolin and cellulose into a dispersion kettle, disperse at a high speed of 1000-1500 r / min for 25-40 minutes, add modified acrylic emulsion, protective glue solution and quartz sand, stir for 10-20 minutes to obtain liquid colored sand, mix the liquid colored sand and granulation liquid and stir for 3-5 minutes to obtain a real stone paint made of liquid colored sand and granulation liquid.

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