Special light stone-like coating easy to construct and preparation method of special light stone-like coating

Abstract

The invention discloses a special light stone-like paint easy to construct and a preparation method of the special light stone-like paint, and relates to the technical field of water-based stone-like paint for interior and exterior walls of buildings. The special stone-like coating is prepared from the following raw materials: 100 to 350 parts of water, 1 to 3 parts of hydroxyethyl cellulose ether with the viscosity of 30000 to 60000CP, 0.2 to 0.5 part of a multifunctional adjusting auxiliary agent, 120 to 160 parts of low-VOC (volatile organic compound) odor-free acrylate emulsion, 1 to 2 parts of a formaldehyde-free odor-free preservative, 2 to 7 parts of a composite anti-freezing-melting stabilizer, 6 to 10 parts of a coalescing agent, 0.5 to 2 parts of an associated alkali swelling thickening agent and 1 to 4 parts of a polyurethane thickening agent. The water-based colored sheet comprises the following components in parts by weight: 200-500 parts of quartz sand, 100-500 parts of flexible colored sheets, 0.2-2 parts of a pH regulator, 10-25 parts of a water-based wax emulsion, 1-5 parts of a thixotropic slipping agent, 1-2 parts of an anti-freezing agent and 1-2 parts of a water-based defoaming agent. The prepared real stone paint has the characteristics of being controllable in batches, easy to construct, capable of solving the problem of large-area floating during construction, reducing burden on a wall body and enabling a product to be lighter, and meets the comprehensive requirements of the building decoration field on efficient construction, light-weight materials and high-quality decoration effects.

Description

Technical Field

[0001] This invention belongs to the technical field of water-based imitation stone coatings for interior and exterior walls of buildings, specifically relating to a lightweight, easy-to-apply special stone paint and its preparation method. Background Technology

[0002] Traditional stone paint is a thick coating made of natural colored sand, emulsion, additives, etc. It is applied by spraying to create a decorative effect that closely resembles natural stone. Because traditional stone paint usually uses 70%-80% natural colored sand as aggregate, and the aggregate particles are coarse and have high viscosity, it requires a special large spray gun and air compressor for outdoor construction. At the same time, it requires high technical skills from the construction personnel, and uneven spraying can easily lead to problems such as mottled appearance and uneven joints.

[0003] To ensure the decorative effect of stone paint, a thick coating of 2-3mm or more is usually required. However, spraying a thick coating consumes a lot of materials and has low construction efficiency, which cannot meet the comprehensive needs of the building decoration industry for efficient construction, lightweight materials and high-quality decorative effects. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight and easy-to-apply special stone paint and its preparation method, which has the characteristics of easy application, good spraying effect, light weight, fast drying speed and good texture effect, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lightweight and easy-to-apply special stone-like paint, by weight, comprises the following raw materials: 100-350 parts water, 1-3 parts hydroxyethyl cellulose ether with a viscosity of 30,000-60,000 CP, 0.2-0.5 parts multifunctional regulating agent, 120-160 parts low-VOC odorless acrylic emulsion, 1-2 parts formaldehyde-free odorless preservative, 2-7 parts composite antifreeze-thaw stabilizer, 6-10 parts film-forming aid, 0.5-2 parts associative alkali-swelling thickener, 1-4 parts polyurethane thickener, 200-500 parts quartz sand, 100-500 parts flexible colored film, 0.2-2 parts pH adjuster, 10-25 parts water-based wax emulsion, 1-5 parts thixotropic slip agent, 1-2 parts antifreeze agent, and 1-2 parts water-based defoamer.

[0007] Preferably, the thixotropic slip agent is a flake silicate with a diameter of 10-100 nm.

[0008] Preferably, the low-VOC, odorless acrylate emulsion is synthesized by polymerization reaction using low-odor acrylate monomers, functional monomers, environmentally friendly emulsifiers, initiators, and deionized water as raw materials.

[0009] Preferably, the formaldehyde-free, odor-neutralizing preservative is mainly composed of environmentally friendly bactericidal ingredients, including isothiazolinones, benzisothiazolinones, and quaternary ammonium salts.

[0010] Preferably, the composite antifreeze-thaw stabilizer is prepared from antifreeze, polyol ether, corrosion inhibitor and cellulose ether derivative as raw materials, wherein the corrosion inhibitor is sodium benzoate or borax.

[0011] Preferably, in the preparation of the multifunctional regulating agent, isobutylene is first mixed with air and oxidized to generate methacrolein, then methacrolein is reacted with ammonia to generate 2-amino-2-methyl-1-propanal, then 2-amino-2-methyl-1-propanal is catalytically hydrogenated and reduced to 2-amino-2-methyl-1-propanol, and finally 2-amino-2-methyl-1-propanol is diluted to a concentration of 95% with deionized water to obtain the multifunctional regulating agent.

[0012] Preferably, the antifreeze is one or both of ethylene glycol and propylene glycol.

[0013] Preferably, the quartz sand is natural colored quartz sand with a particle size between 100 and 300 mesh, and the quartz sand contains 90-99% SiO2 and 0.06-0.2% Fe2O3.

[0014] Preferably, the aqueous defoamer is a mixture of mineral oil defoamer and organosilicon defoamer.

[0015] Based on the above description of a lightweight and easy-to-apply stone-like paint, this invention also provides a method for preparing the lightweight and easy-to-apply stone-like paint, comprising the following steps:

[0016] S1. Add water to the dispersion tank, adjust the rotation speed to 500-800 rpm, then add 1-5 parts of hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 3-5 minutes;

[0017] S2. Adjust the speed to 800-1000 rpm, add one part of multi-functional regulating agent, and disperse for 3-5 minutes;

[0018] S3. Keep the rotation speed at 800-1000 rpm, add the low VOC odorless acrylic emulsion, disperse for 3-5 minutes, then adjust the rotation speed to 500-800 rpm, then add the formaldehyde-free odorless preservative, compound antifreeze-thaw stabilizer, film-forming aid, associative alkali-swelling thickener and polyurethane thickener, and continue to disperse for 3-5 minutes;

[0019] S4. Continue at 500-800 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and continue to disperse for 3-5 minutes;

[0020] S5. Keep the rotation speed at 500-800 rpm, then add quartz sand and flexible colored flakes, and stir evenly to obtain a lightweight and easy-to-apply special stone paint.

[0021] The present invention provides a lightweight and easy-to-apply special stone-like paint and its preparation method, which have the following advantages compared with the prior art:

[0022] 1. This invention selects high-quality low-VOC odorless acrylic emulsion and selects hydroxyethyl cellulose ether with good water retention to improve the stability and workability of the product. It effectively solves the problem of yellowing of ordinary acrylic emulsion stone paint. The application of flexible color film can effectively solve the problem of difficult color difference control between batches.

[0023] 2. This invention uses flexible colored sheets instead of natural quartz sand to reduce the unit consumption and greatly reduce the weight of the wall per unit area.

[0024] 3. This invention, through the use of thixotropic slip agents, can adjust the viscosity, yield strength, stability, and workability of the product, resulting in significant technical and economic benefits.

[0025] 4. The real stone paint prepared by this invention has the characteristics of batch-to-batch controllability, easy construction, solving the problem of large-area blooming during construction, reducing the burden on the wall, and making the product more lightweight, thus meeting the comprehensive needs of the building decoration field for efficient construction, lightweight materials and high-quality decorative effects. Attached Figure Description

[0026] Figure 1 This is a flowchart of the preparation process of the present invention. Detailed Implementation

[0027] 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, and not all embodiments. The specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention. 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.

[0028] This invention provides a lightweight and easy-to-apply special stone-like paint, comprising the following raw materials by weight: 100-350 parts water, 1-3 parts hydroxyethyl cellulose ether with a viscosity of 30,000-60,000 CP, 0.2-0.5 parts multifunctional regulating agent, 120-160 parts low-VOC odorless acrylic emulsion, 1-2 parts formaldehyde-free odorless preservative, 2-7 parts composite antifreeze-thaw stabilizer, 6-10 parts film-forming aid, 0.5-2 parts associative alkali-swelling thickener, 1-4 parts polyurethane thickener, 200-500 parts quartz sand, 100-500 parts flexible colored film, 0.2-2 parts pH adjuster, 10-25 parts water-based wax emulsion, 1-5 parts thixotropic slip agent, 1-2 parts antifreeze agent, and 1-2 parts water-based defoamer.

[0029] Specifically, the thixotropic slip agent is a flake silicate with a diameter of 10-100 nm. The thixotropic slip agent includes SMP-HS / BP-HS thixotropic slip agent, CT06 thixotropic slip agent, and PANGEL-S9 thixotropic slip agent.

[0030] The low-VOC, odorless acrylate emulsion is synthesized by polymerization reaction using low-odor acrylate monomers, functional monomers, environmentally friendly emulsifiers, initiators, and deionized water as raw materials. Specifically, the low-odor acrylate monomers, functional monomers, environmentally friendly emulsifiers, and deionized water are first mixed and stirred at high speed to prepare a stable pre-emulsion. Then, a portion of the pre-emulsion and initiator are added to the reactor, and the temperature is raised to 70-85℃ to initiate polymerization, forming seed latex particles. The remaining pre-emulsion and initiator are then added dropwise at a uniform rate, controlling the reaction temperature and drop rate to avoid localized violent reactions that could lead to an increase in VOCs. The temperature is then lowered to below 40℃, a neutralizing agent is added to adjust the pH value, and impurities are removed by filtration to obtain the low-VOC, odorless emulsion.

[0031] The formaldehyde-free, odor-neutralizing preservative is mainly composed of environmentally friendly bactericidal ingredients, including isothiazolinones, benzisothiazolinones, and quaternary ammonium salts. The isothiazolinones are methylisothiazolinones or chloromethylisothiazolinones. In the preparation of the formaldehyde-free, odor-neutralizing preservative, 1-2 environmentally friendly bactericidal ingredients are selected, and propylene glycol or ethylene glycol ether is added to dissolve the environmentally friendly bactericidal ingredients. Then, metal chelating agents and corrosion inhibitors are added to adjust the pH value of the solvent to 6-8. After stirring evenly, the mixture is filtered to obtain the formaldehyde-free, odor-neutralizing preservative.

[0032] The composite freeze-thaw stabilizer is prepared from antifreeze, polyol ether, corrosion inhibitor and cellulose ether derivative as raw materials. The corrosion inhibitor is sodium benzoate or borax. In the preparation of the composite freeze-thaw stabilizer, the antifreeze is added to the mixing vessel and heated to 40-50°C. The corrosion inhibitor and polyol ether are added in sequence and stirred at a rate of 300-500 rpm until completely dissolved. After cooling to room temperature, deionized water is added to adjust the concentration. The insoluble matter is filtered out to obtain the composite freeze-thaw stabilizer.

[0033] In the preparation of the multifunctional regulator, isobutylene is first oxidized with air to generate methacrolein, then methacrolein is reacted with ammonia to generate 2-amino-2-methyl-1-propanal, then 2-amino-2-methyl-1-propanal is catalytically hydrogenated to obtain 2-amino-2-methyl-1-propanol, and finally 2-amino-2-methyl-1-propanol is diluted to a concentration of 95% with deionized water to obtain the multifunctional regulator.

[0034] The antifreeze is one or both of ethylene glycol and propylene glycol.

[0035] The quartz sand is natural colored quartz sand with a particle size between 100 and 300 mesh, and the quartz sand contains 90-99% SiO2 and 0.06-0.2% Fe2O3.

[0036] The water-based defoamer is a mixture of mineral oil defoamer and organosilicon defoamer.

[0037] Based on the above description of a lightweight and easy-to-apply special stone-like paint, this invention also provides a method for preparing such a paint, as follows: Figure 1 As shown, it includes the following steps:

[0038] S1. Add water to the dispersion tank, adjust the rotation speed to 500-800 rpm, then add 1-5 parts of hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 3-5 minutes;

[0039] S2. Adjust the speed to 800-1000 rpm, add one part of multi-functional regulating agent, and disperse for 3-5 minutes;

[0040] S3. Keep the rotation speed at 800-1000 rpm, add the low VOC odorless acrylic emulsion, disperse for 3-5 minutes, then adjust the rotation speed to 500-800 rpm, then add the formaldehyde-free odorless preservative, compound antifreeze-thaw stabilizer, film-forming aid, associative alkali-swelling thickener and polyurethane thickener, and continue to disperse for 3-5 minutes;

[0041] S4. Continue at 500-800 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and continue to disperse for 3-5 minutes;

[0042] S5. Keep the rotation speed at 500-800 rpm, then add quartz sand and flexible colored flakes, and stir evenly to obtain a lightweight and easy-to-apply special stone paint.

[0043] Based on the above-mentioned lightweight and easy-to-apply special stone-like paint and its preparation method, the following specific embodiments are provided to verify the performance of the special stone-like paint prepared by this method:

[0044] Example 1

[0045] To achieve excellent ease of application, superior resistance to yellowing, and stable storage performance, Example 1 selects a combination of various thixotropic slip agents and various low-VOC, odorless acrylic emulsions from a lightweight, easy-to-apply stone-like paint formulation for screening. These formulations are numbered "Formula 1", "Formula 2"... "Formula 9" and prepared according to the components and weight ratios shown in Table 1.

[0046] Table 1

[0047]

[0048] The process for preparing lightweight and easy-to-apply special stone-like paint based on the raw materials and proportions provided in Table 1 is as follows:

[0049] (1) Add water to the dispersion tank, adjust the rotation speed to 500 rpm, then add hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 5 minutes;

[0050] (2) Then adjust the speed to 800 rpm, add the multi-functional regulating agent, and disperse for 5 minutes;

[0051] (3) Next, keep the speed at 800 rpm, add low VOC odorless acrylic emulsion, disperse for 5 minutes, adjust the speed to 500 rpm, then add formaldehyde-free odorless preservative, compound antifreeze stabilizer, film-forming aid, associative alkali swelling thickener, and polyurethane thickener, and then continue to disperse for 3-5 minutes.

[0052] (4) Continue to maintain 500 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and then continue to disperse for 3-5 minutes;

[0053] (5) Then keep the rotation speed at 500 rpm, then add natural quartz sand and flexible colored flakes, and stir evenly to make lightweight and easy-to-apply special stone paint.

[0054] The special stone-like paint prepared according to the materials and processes in Table 1 was subjected to comparative tests on its resistance to yellowing, storage stability, and spraying application effect. The results are shown in Table 2.

[0055] Table 2:

[0056]

[0057] The results in Table 2 show that all formulations maintained "powdering level 0" after 800 hours of artificial aging, with only a few formulations showing slight discoloration (levels 1-2). This indicates that the selected low-VOC odorless acrylic emulsions (STL-9101, BLJ838A-2, RS-9977A) combined with thixotropic slip agents can effectively resist aging and yellowing. The initial viscosity and viscosity fluctuations of different formulations after 15 days of heat storage were small. For example, the initial viscosity of formulation 8 was 123,600 dpa.s, and it was 123,400 dpa.s after heat storage, with no obvious layering or clumping. This indicates that the formulation system has good compatibility and stable performance during storage.

[0058] Formulas 7-9, which use "thixotropic slip agent PANGELS9 + low-VOC odorless acrylate emulsion STL-9101 / BLJ838A-2 / RS-9977A", all showed excellent application results. In contrast, formulas 1-6, which use other thixotropic slip agents (SMP-HS / BP-HS, CT06) with emulsions, only achieved "good" results. This demonstrates that the synergy between PANGEL-S9 thixotropic slip agent and the selected low-VOC emulsion is optimal, significantly improving application smoothness and molding effect. Among them, formula 8 (PANGEL-S9 + STL-9101 emulsion) showed only a grade 2 discoloration after 800 hours of aging, minimal heat storage viscosity fluctuation, and excellent application results. It is the best raw material combination that balances yellowing resistance, storage stability, and application performance.

[0059] Example 2

[0060] To further optimize the storage performance of the formula, Example 2 selected cellulose from a lightweight and easy-to-apply stone paint formula and used a variety of cellulose comparative test schemes, numbered "Formula 10"..."Formula 12", and prepared according to the components and weight ratios shown in Table 3:

[0061] Table 3:

[0062]

[0063] The process for preparing lightweight and easy-to-apply special stone-like paint based on the raw materials and proportions provided in Table 3 is as follows:

[0064] (1) Add water to the dispersion tank, adjust the speed to 650 rpm, then add hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 4 minutes;

[0065] (2) Then adjust the speed to 900 rpm, add the multi-functional regulating agent, and disperse for 4 minutes;

[0066] (3) Next, keep the speed at 900 rpm, add low VOC odorless acrylic emulsion, disperse for 4 minutes, adjust the speed to 650 rpm, and then add formaldehyde-free odorless preservative, compound antifreeze-thaw stabilizer, film-forming aid, associative alkali swelling thickener, and polyurethane thickener, and then continue to disperse for 4 minutes.

[0067] (4) Continue to maintain 650 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and then continue to disperse for 4 minutes;

[0068] (5) Then keep the rotation speed at 650 rpm, then add natural quartz sand and flexible colored flakes, and stir evenly to make lightweight and easy-to-apply special stone paint.

[0069] A lightweight, easy-to-apply stone-like paint prepared using the above materials and processes underwent performance tests, and the test results are shown in Table 4.

[0070] Table 4:

[0071]

[0072] The test results in Table 4 show that:

[0073] Formula 11, which uses EBS481FQ cellulose, exhibits a jelly-like consistency and significant thickening after heat storage, indicating that the cellulose reacts adversely with the emulsion system, leading to product failure. Therefore, it should be excluded from use.

[0074] Formula 12 uses B100K cellulose, which experiences slight moisture loss after heat storage, resulting in moderate storage stability.

[0075] Formula 10, using 250HBR cellulose, showed excellent performance after heat storage. The initial viscosity was 125,000 dpa.s, and after heat storage, it was 126,200 dpa.s, with minimal fluctuation. This proves that Ashland 250HBR hydroxyethyl cellulose ether is the optimal choice for this formula, effectively ensuring the performance stability of the product during storage and avoiding problems such as layering and thickening. High-quality cellulose not only needs to meet the viscosity requirements (30,000-60,000 CP), but also needs to be compatible with components such as emulsions and additives; otherwise, it will compromise the stability of the formula. The water retention and thixotropic properties of 250HBR cellulose are more suitable for the Benzhen stone paint system.

[0076] Example 3

[0077] To further demonstrate the lightweight, low-consumption, and easy-to-apply properties of this special stone-like paint, a comparative test was conducted with traditional stone-like paint in terms of application consumption, sand shedding, workability, coverage, and application effect. Example 3 selected a comparative test scheme for dark and light-colored stone-like paint, numbered "Formula 13," "Formula 14," "Formula 15," and "Formula 16," to test unit consumption and sand shedding under different mesh sizes of sand. The paint was formulated according to the components and weight ratios shown in Table 5.

[0078] Table 5:

[0079]

[0080] The process for preparing lightweight and easy-to-apply special stone-like paint based on the raw material ratios provided in Table 5 is as follows:

[0081] (1) Add water to the dispersion tank, adjust the speed to 800 rpm, then add hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 3 minutes;

[0082] (2) Then adjust the speed to 1000 rpm, add the multi-functional regulating agent, and disperse for 3 minutes;

[0083] (3) Next, keep the rotation speed at 1000 rpm, add low VOC odorless acrylic emulsion, disperse for 3 minutes, adjust the rotation speed to 800 rpm, and then add formaldehyde-free odorless preservative, compound antifreeze-thaw stabilizer, film-forming aid, associative alkali swelling thickener, and polyurethane thickener, and then continue to disperse for 3 minutes.

[0084] (4) Continue to maintain 800 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and then continue to disperse for 3 minutes;

[0085] (5) Then keep the rotation speed at 800 rpm, then add natural quartz sand and flexible colored flakes, and stir evenly to make lightweight and easy-to-apply special stone paint.

[0086] The performance of a lightweight and easy-to-apply stone-like paint prepared with the material ratios provided in Table 5 was tested, and the test results are shown in Table 6.

[0087] Table 6:

[0088]

[0089] As shown in Table 6, the addition of flexible colored flakes to the formula to replace part of the quartz colored sand not only improves the construction efficiency, coverage, and sand shedding during spraying, but also reduces the amount of paint used per unit area, which is significantly lower than that of traditional stone paint. The construction sample effect is more realistic than that of traditional stone paint.

[0090] Based on the experimental test results of the above implementation cases, it can be seen that the lightweight and easy-to-apply special stone-like paint prepared by this invention has the following advantages in application:

[0091] 1) High-quality low-VOC odorless acrylic emulsion is selected, and hydroxyethyl cellulose ether with good water retention is selected to improve the stability and workability of the product. This effectively solves the problem of yellowing of ordinary acrylic emulsion stone paint. The application of flexible color film can effectively solve the problem of difficult color difference control between batches.

[0092] 2) Flexible colored sheets are used instead of natural quartz sand, thereby reducing the unit consumption and greatly reducing the weight of the wall per unit area;

[0093] 3) The use of thixotropic slip agents can adjust the viscosity, yield strength, stability and workability of the product, resulting in significant technical and economic benefits;

[0094] 4) Batch-to-batch controllability, easy construction, and solution to the problem of large-area blooming during construction, reducing the load on the wall and making the product more lightweight, meeting the comprehensive needs of the building decoration industry for efficient construction, lightweight materials and high-quality decorative effects.

[0095] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lightweight and easy-to-apply special stone-like paint, characterized in that: By weight, the ingredients include the following raw materials: 100-350 parts water, 1-3 parts hydroxyethyl cellulose ether with a viscosity of 30,000-60,000 CP, 0.2-0.5 parts multifunctional regulating agent, 120-160 parts low-VOC odor-neutralizing acrylic emulsion, 1-2 parts formaldehyde-free odor-neutralizing preservative, 2-7 parts composite antifreeze-thaw stabilizer, 6-10 parts film-forming aid, 0.5-2 parts associative alkali-swelling thickener, 1-4 parts polyurethane thickener, 200-500 parts quartz sand, 100-500 parts flexible colored film, 0.2-2 parts pH adjuster, 10-25 parts water-based wax emulsion, 1-5 parts thixotropic slip agent, 1-2 parts antifreeze agent, and 1-2 parts water-based defoamer.

2. The lightweight and easy-to-apply special stone-like paint according to claim 1, characterized in that: The thixotropic slip agent is a sheet silicate with a diameter of 10-100 nm.

3. The lightweight and easy-to-apply special stone-like paint according to claim 2, characterized in that: The low-VOC, odorless acrylate emulsion is synthesized by polymerization reaction using low-odor acrylate monomers, functional monomers, environmentally friendly emulsifiers, initiators, and deionized water as raw materials.

4. The lightweight and easy-to-apply special stone-like paint according to claim 3, characterized in that: The formaldehyde-free, odor-neutralizing preservative is mainly composed of environmentally friendly bactericidal ingredients, including isothiazolinones, benzisothiazolinones, and quaternary ammonium salts.

5. The lightweight and easy-to-apply special stone-like paint according to claim 4, characterized in that: The composite antifreeze-thaw stabilizer is prepared from antifreeze, polyol ether, corrosion inhibitor and cellulose ether derivative as raw materials, wherein the corrosion inhibitor is sodium benzoate or borax.

6. The lightweight and easy-to-apply special stone-like paint according to claim 5, characterized in that: In the preparation of the multifunctional regulator, isobutylene is first oxidized with air to generate methacrolein, then methacrolein is reacted with ammonia to generate 2-amino-2-methyl-1-propanal, then 2-amino-2-methyl-1-propanal is catalytically hydrogenated to obtain 2-amino-2-methyl-1-propanol, and finally 2-amino-2-methyl-1-propanol is diluted to a concentration of 95% with deionized water to obtain the multifunctional regulator.

7. The lightweight and easy-to-apply special stone-like paint according to claim 1, characterized in that: The antifreeze is one or both of ethylene glycol and propylene glycol.

8. The lightweight and easy-to-apply special stone-like paint according to claim 1, characterized in that: The quartz sand is natural colored quartz sand with a particle size between 100 and 300 mesh, and the quartz sand contains 90-99% SiO2 and 0.06-0.2% Fe2O3.

9. The lightweight and easy-to-apply special stone-like paint according to claim 1, characterized in that: The water-based defoamer is a mixture of mineral oil defoamer and organosilicon defoamer.

10. A method for preparing a lightweight and easy-to-apply special stone-like paint, comprising preparing the lightweight and easy-to-apply special stone-like paint according to any one of claims 1-9, characterized in that: Includes the following steps: S1. Add water to the dispersion tank, adjust the rotation speed to 500-800 rpm, then add 1-5 parts of hydroxyethyl cellulose ether and thixotropic slip agent, and disperse for 3-5 minutes; S2. Adjust the speed to 800-1000 rpm, add one part of multi-functional regulating agent, and disperse for 3-5 minutes; S3. Keep the rotation speed at 800-1000 rpm, add the low VOC odorless acrylic emulsion, disperse for 3-5 minutes, then adjust the rotation speed to 500-800 rpm, then add the formaldehyde-free odorless preservative, compound antifreeze-thaw stabilizer, film-forming aid, associative alkali-swelling thickener and polyurethane thickener, and continue to disperse for 3-5 minutes; S4. Continue at 500-800 rpm, add pH adjuster, water-based wax emulsion, antifreeze and water-based defoamer, and continue to disperse for 3-5 minutes; S5. Keep the rotation speed at 500-800 rpm, then add quartz sand and flexible colored flakes, and stir evenly to obtain a lightweight and easy-to-apply special stone paint.

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