Crystal color stone coating as well as preparation method and construction method thereof

Abstract

The invention relates to the technical field of high-performance coatings, in particular to a crystal color stone coating as well as a preparation method and a construction method thereof. According to the crystal color stone coating provided by the invention, all the components with specific contents are matched with one another, so that the crystal color stone coating can achieve a vivid natural granite decoration effect. Specifically, through the modified bentonite, the viscosity of the crystal color stone coating is improved, and the constructability and other properties of the crystal color stone coating are improved. By compounding the cellulose, the viscosity and the water retention property of the crystal color stone coating are improved, so that the problems of construction joint and the like of the crystal color stone coating are solved. By compounding the slipping agent and other components, the construction smoothness and coloring uniformity of the high-crystal colored stone coating are improved. Through the effects, the vivid natural granite decoration effect is finally achieved.

Description

Technical Field

[0001] This invention relates to the field of high-performance coatings technology, and in particular to a crystal stone coating and its preparation and application methods. Background Technology

[0002] Crystal Stone Coating, a thick coating, is mainly made of natural colored quartz sand, inorganic pigments and high-end water-based acrylic resin. Its coating film has a strong texture and rich colors, and has a decorative effect that closely resembles natural granite. At the same time, it has excellent properties such as high hardness, weather resistance, stain resistance and crack resistance.

[0003] However, due to limitations in construction conditions and the performance of existing crystal stone coatings, their natural granite decorative effect is not ideal. Therefore, how to obtain a crystal stone coating that realistically resembles natural granite is a problem faced by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a crystal stone coating and its preparation and application methods. The crystal stone coating provided by the present invention can achieve a realistic natural granite decorative effect.

[0005] This invention provides a crystal stone coating, comprising the following components in parts by weight: The composition includes 70-75 parts of high-temperature calcined sand, 15-20 parts of resin emulsion, 6-8 parts of compound cellulose, 4-6 parts of film-forming aid, 4-6 parts of ethylene glycol, 2-4 parts of bactericide, 2-4 parts of defoamer, 2-4 parts of slip agent, 1-4 parts of modified bentonite, 1 part of multifunctional additive, 14-16 parts of water, and polyurethane thickener; the amount of polyurethane thickener added is based on the viscosity of the crystal stone coating being 100-100 KU.

[0006] Preferably, the particle size of the high-temperature calcined sand is 20-40 mesh.

[0007] Preferably, the resin emulsion is a silicone-acrylic emulsion; the solid content of the resin emulsion is 43-45%.

[0008] Preferably, the compound cellulose comprises hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose; the mass ratio of the hydroxyethyl methyl cellulose to the hydroxypropyl methyl cellulose is 4.5~5.5:1.

[0009] Preferably, the modified bentonite includes montmorillonite, quartz, calcite, and quaternary ammonium bentonite.

[0010] The present invention also provides a method for preparing the crystal stone coating described above, comprising the following steps: (1) The compound cellulose, modified bentonite, bactericide, defoamer, slip agent and part of water are mixed to obtain a first mixture; (2) The first mixture is mixed with the film-forming aid, ethylene glycol and the second multifunctional aid to obtain the second mixture; (3) The second mixture is mixed with the resin emulsion to obtain a third mixture; (4) The third mixture is mixed with the polyurethane thickener and the remaining water to obtain the fourth mixture; (5) The fourth mixture is mixed with the fifth high-temperature calcined sand to obtain the crystal stone coating.

[0011] The present invention also provides a method for applying the crystal stone coating described above, comprising the following steps: The substrate is then subjected to waterproofing treatment, sanding, curing, application of alkali-resistant sealing primer, application of crystal stone coating, and application of topcoat; the crystal stone coating is the crystal stone coating described in the above scheme or the crystal stone coating prepared by the above scheme.

[0012] Preferably, the application temperature of the applied crystal stone coating is 5-35 degrees Celsius and the humidity is less than 85%; the application of the crystal stone coating is performed twice.

[0013] Preferably, the application of the crystal stone coating includes the following steps: using a stainless steel trowel to apply a 2-3 mm thick layer of crystal stone slurry at a 45-degree angle at a uniform speed.

[0014] Preferably, the pH value of the base layer is 8-10; the moisture content of the base layer is not greater than 10%; and the flatness error of the base layer is not greater than 3 mm.

[0015] This invention provides a crystalline stone coating. The crystalline stone coating provided by this invention, through the synergistic effect of its components in specific proportions, achieves a realistic natural granite decorative effect. Specifically, this invention improves the viscosity of the crystalline stone coating by modifying bentonite, thereby improving its workability and other properties. This invention also improves the viscosity and water retention properties of the crystalline stone coating by compounding cellulose, thus improving issues such as joint problems during application. Furthermore, this invention enhances the smoothness of application and the uniformity of coloring by compounding a slip agent with other components. Through the combined effect of the above components, this invention ultimately achieves a realistic natural granite decorative effect.

[0016] This invention also provides a method for preparing the crystal stone coating described above. The preparation method provided by this invention has simple steps, is easy to operate, does not rely on complex equipment, has low production costs, good safety, and has the potential for industrial production.

[0017] This invention also provides a construction method for the crystal stone coating described above. Through standardized construction, this invention achieves a high-quality imitation stone effect with uniform color, consistent texture, no blooming, no missed areas, and no runs, resulting in a realistic natural granite decorative effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of this invention, the accompanying drawings used in the embodiments of this invention or in the prior art are briefly described below. For those skilled in the art, other drawings can be derived from the following drawings without creative effort, and all such drawings are within the protection scope of this invention.

[0019] Figure 1 The image shows the appearance of the crystal stone coating prepared in Example 1. Detailed Implementation

[0020] This invention provides a crystal stone coating, comprising the following components in parts by weight: The composition includes 70-75 parts of high-temperature calcined sand, 15-20 parts of resin emulsion, 6-8 parts of compound cellulose, 4-6 parts of film-forming aid, 4-6 parts of ethylene glycol, 2-4 parts of bactericide, 2-4 parts of defoamer, 2-4 parts of slip agent, 1-4 parts of modified bentonite, 1 part of multifunctional additive, 14-16 parts of water, and polyurethane thickener; the amount of polyurethane thickener added is based on the viscosity of the crystal stone coating being 100-100 KU.

[0021] The crystal stone coating provided by the present invention comprises 70-75 parts of high-temperature calcined sand, preferably 73-74 parts.

[0022] In this invention, the high-temperature calcined sand is quartz sand treated at high temperature (800~1200 degrees Celsius), which reduces the coefficient of thermal expansion and improves thermal stability; the particle size of the high-temperature calcined sand is preferably 20~40 mesh, more preferably 30 mesh; the high-temperature calcined sand is preferably high-temperature calcined sand produced by Nanzhao Jiacheng Mining Co., Ltd.

[0023] The crystal stone coating provided by the present invention comprises 15 to 20 parts of resin emulsion, preferably 16 to 17 parts.

[0024] In this invention, the resin emulsion is preferably a silicone-acrylic emulsion; the solid content of the resin emulsion is preferably 43-45%, more preferably 44%.

[0025] The crystal stone coating provided by the present invention comprises 6 to 8 parts of compounded cellulose, preferably 7 parts.

[0026] In this invention, the compound cellulose preferably includes hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose; the mass ratio of the hydroxyethyl methyl cellulose to the hydroxypropyl methyl cellulose is preferably 4.5~5.5:1, more preferably 5:1. By adding the compound cellulose, this invention can improve the water retention performance of the crystal stone coating.

[0027] The crystal stone coating provided by the present invention includes 4 to 6 parts of film-forming aid, preferably 5 parts.

[0028] In this invention, the film-forming aid preferably comprises a dodecyl alcohol ester.

[0029] The crystal stone coating provided by the present invention comprises 4 to 6 parts of ethylene glycol, preferably 5 parts.

[0030] The crystal stone coating provided by the present invention includes 2 to 4 parts of bactericide, preferably 3 parts.

[0031] In this invention, the bactericide preferably comprises 2-methyl-4-isothiazolin-3-one (MIT), 2-methyl-5-chloro-4-isothiazolin-3-one (CMI), and an inorganic salt stabilizer; the bactericide is preferably ZY-MBS high-temperature resistant bactericidal and preservative agent produced by Shanghai Zhiyi Chemical Technology Co., Ltd.

[0032] The crystal stone coating provided by the present invention includes 2 to 4 parts of defoamer, preferably 3 parts.

[0033] In this invention, the defoamer preferably comprises mineral oil; the defoamer is preferably the SN-919 model mineral oil general-purpose water-based defoamer produced by Shanghai Snow New Materials Co., Ltd.

[0034] The crystal stone coating provided by the present invention includes 2 to 4 parts of a slip agent, preferably 3 parts.

[0035] In this invention, the slip agent preferably comprises organosilicon and fatty acid amide; the slip agent is preferably a slip agent produced by Jinzhou Hongyuan Cellulose Co., Ltd.

[0036] The crystal stone coating provided by the present invention comprises 1 to 4 parts of modified bentonite, preferably 2 to 3 parts.

[0037] In this invention, the modified bentonite preferably comprises montmorillonite, quartz, calcite and quaternary ammonium salt bentonite; the modified bentonite is preferably BP-188L modified bentonite produced by Zhejiang Fenghong New Material Co., Ltd.

[0038] In this invention, the effective component of the multifunctional additive preferably includes 2-amino-2-methyl-1-propanol; the content of 2-amino-2-methyl-1-propanol is preferably 94~96wt%, more preferably 95wt%; the multifunctional additive is preferably AMP-95 deodorizing neutralizer produced by Shanghai Zhiyi Chemical Technology Co., Ltd.

[0039] In this invention, the polyurethane thickener preferably includes hydrophobically modified ethylene oxide polyurethane, polyether polyol, and diisocyanate; the polyurethane thickener is preferably R-8W nonionic associative polyurethane thickener produced by Shanghai Snow New Materials Co., Ltd.

[0040] The crystal stone coating provided by the present invention comprises 14 to 16 parts of water, preferably 15 parts.

[0041] In this invention, the water is preferably purified water.

[0042] The present invention also provides a method for preparing the crystal stone coating described above, comprising the following steps: (1) The compound cellulose, modified bentonite, bactericide, defoamer, slip agent and part of water are mixed to obtain a first mixture; (2) The first mixture is mixed with the film-forming aid, ethylene glycol and the second multifunctional aid to obtain the second mixture; (3) The second mixture is mixed with the resin emulsion to obtain a third mixture; (4) The third mixture is mixed with the polyurethane thickener and the remaining water to obtain the fourth mixture; (5) The fourth mixture is mixed with the fifth high-temperature calcined sand to obtain the crystal stone coating.

[0043] This invention involves first mixing compound cellulose, modified bentonite, bactericide, defoamer, slip agent, and a portion of water to obtain a first mixture. In this invention, the first mixing is preferably performed by stirring; the stirring speed is preferably 800-1000 rpm, more preferably 850-900 rpm; and the mixing time is preferably 30 minutes or more, more preferably 30-35 minutes. This invention, through the first mixing, obtains a lumpy-free first mixture.

[0044] After obtaining the first mixture, the present invention further mixes the first mixture with a film-forming aid, ethylene glycol, and a multifunctional additive to obtain a second mixture. In the present invention, the second mixing is preferably carried out by stirring; the stirring speed of the second mixing is preferably 400-500 rpm, more preferably 430-460 rpm; the mixing time of the second mixing is preferably 5-10 minutes, more preferably 7-8 minutes.

[0045] After obtaining the second mixture, the present invention further mixes the second mixture with a resin emulsion to obtain a third mixture. In the present invention, the third mixing is preferably performed by stirring; the rotation speed of the third mixing is preferably 400-500 rpm, more preferably 450-480 rpm.

[0046] After obtaining the third mixture, the present invention further mixes the third mixture with a polyurethane thickener and the remaining water to obtain a fourth mixture. In the present invention, the fourth mixture preferably includes the following steps: premixing the polyurethane thickener and the remaining water to obtain a premix, and adding the premix to the third mixture.

[0047] In this invention, the mass ratio of the polyurethane thickener to the remaining water is preferably 1:2.

[0048] In this invention, the fourth mixing process preferably includes allowing the resulting product to stand; the standing time is preferably 18-22 minutes, more preferably 20 minutes. This invention uses the standing process to observe whether the fourth mixture exhibits any thickening phenomenon; if no such phenomenon is observed, subsequent steps can be performed.

[0049] After obtaining the fourth mixture, the present invention mixes the fourth mixture with high-temperature calcined sand in a fifth mixture to obtain the crystal stone coating. In the present invention, the fifth mixture is preferably stirred; the rotation speed of the fifth mixture is preferably 400~500 rpm, more preferably 430~480 rpm.

[0050] The present invention also provides a method for applying the crystal stone coating described above, comprising the following steps: The substrate is then subjected to waterproofing treatment, sanding, curing, application of alkali-resistant sealing primer, application of crystal stone coating, and application of topcoat; the crystal stone coating is the crystal stone coating described in the above scheme or the crystal stone coating prepared by the above scheme.

[0051] In this invention, the waterproofing process preferably includes pretreatment of the substrate; the pretreatment preferably includes one or more of the following: impurity removal, repair, and sanding. This invention removes dust, oil, or release agents from the substrate surface through impurity removal; repairs hollow or cracked areas are chiseled away and smoothed with commercially available polymer mortar (such as Three Trees polymer mortar or Saideli polymer mortar); and sanding (using sandpaper or an air pump) or filling with commercially available polymer mortar smooths out any obvious unevenness in the substrate. In summary, this invention, through pretreatment, ensures a firm, smooth substrate surface free from looseness, sand, hollowness, or cracks.

[0052] In this invention, the pH value of the base layer is preferably 8-10, more preferably 9; the moisture content of the base layer is preferably not greater than 10%, more preferably 3-8%; and the flatness error of the base layer is preferably not greater than 3 mm (checked with a 2-meter straightedge).

[0053] In this invention, the waterproofing treatment is preferably the application of crack-resistant waterproof putty; the crack-resistant waterproof putty is preferably a commercially available crack-resistant waterproof putty (Nippon crack-resistant waterproof putty or Dulux crack-resistant waterproof putty) or a homemade crack-resistant waterproof putty; the homemade crack-resistant waterproof putty preferably includes the following components: silicate cement (Jiulianshan, Jiacheng Mining), washed quartz sand, and hydroxypropyl methylcellulose. When mixing the crack-resistant waterproof putty, strictly follow the product instructions for the proportion of water added, stir evenly, let it stand for 10 minutes to mature, and then stir again before use.

[0054] In this invention, the preferred method for applying the crack-resistant and waterproof putty is by troweling; the preferred troweling equipment is a spatula; and the preferred number of applications is two. The first application primarily serves to level the surface and compact the pores of the substrate; the second application, performed after the first application is completely dry, serves to refine the surface. The two applications are perpendicular to each other to ensure a smooth, even, and scratch-free wall surface.

[0055] In this invention, the waterproofing treatment preferably includes a first drying process; the temperature of the first drying is preferably room temperature, and the drying time is preferably 24-48 hours, more preferably 36 hours. Through this first drying process, the wall surface humidity is kept below 10%.

[0056] In this invention, the sanding is preferably done with sandpaper; the sandpaper used is preferably 320#~400#. This invention eliminates plaster marks and high spots by sanding the wall surface.

[0057] In this invention, the sanding process preferably includes cleaning the wall surface. In a specific embodiment of the invention, a brush or hair dryer can be used to thoroughly remove surface dust from the wall.

[0058] In this invention, the curing process is preferably water spraying; the amount of water sprayed is preferably such that backflow does not occur; the curing time is preferably 3-7 days, more preferably 4-6 days. This invention ensures the crack-resistant and waterproof putty fully cures through curing.

[0059] In this invention, the method for applying the alkali-resistant sealing primer is preferably roller coating; the equipment for roller coating is preferably a roller; the number of times the alkali-resistant sealing primer is applied is preferably one or more times, more preferably one to two times; the alkali-resistant sealing primer is preferably a commercially available alkali-resistant sealing primer, specifically Nippon alkali-resistant sealing primer or Saideli alkali-resistant sealing primer. This invention, by applying the alkali-resistant sealing primer, strengthens the substrate, improves the adhesion of the topcoat, resists alkali and salt precipitation, and saves on the amount of topcoat used.

[0060] In this invention, the application of the alkali-resistant sealing primer is preferably characterized by no missed areas, uniform film formation, and no sagging; the application of the alkali-resistant sealing primer is preferably followed by a second drying process; the temperature of the second drying process is preferably room temperature, and the drying time is preferably 7 to 10 hours, more preferably 8 hours.

[0061] In this invention, the process of applying the crystal stone coating preferably includes sequentially marking lines, dividing the area into sections, and applying masking tape; the width of the gaps between the sections is preferably 10-20 mm. This invention involves marking lines and dividing the area according to the provided design drawings, then using special masking tape to adhere the tape along the marked lines. The lines are straight and the tape is firmly attached without peeling, thus creating the corresponding pattern.

[0062] In this invention, the equipment for applying the crystal stone coating is preferably a stainless steel trowel; the width of the stainless steel trowel is preferably 600-800 mm, more preferably 700 mm; the application temperature for applying the crystal stone coating is preferably 5-35 degrees Celsius, and the humidity is preferably less than 85%; the number of applications for applying the crystal stone coating is preferably 2. The crystal stone coating of this invention can be used immediately after stirring after opening the container, without the need for dilution with water.

[0063] In this invention, the application of the crystal stone coating preferably includes the following steps: using a stainless steel trowel to apply a 2-3mm thick layer of crystal stone slurry at a 45-degree angle at a uniform speed. The application of the crystal stone coating should be completed in one continuous application to avoid repeated rubbing that could lead to color differences or "washboard marks," ensuring even coverage and no unevenness. Application is prohibited in severe weather conditions such as strong winds, rain, or snow.

[0064] In this invention, after applying the crystal stone coating, it is preferable to further include a third drying process followed by the removal of the adhesive tape; the temperature of the third drying process is preferably room temperature, and the drying time is preferably 15 to 30 minutes; the adhesive tape is preferably removed at a uniform speed along a 45-degree angle to ensure that the edges of the dividing seams are neat and sharp.

[0065] In this invention, the process of applying the topcoat preferably includes a fourth drying step; the temperature of the fourth drying step is preferably room temperature, and the drying time is preferably 24 to 48 hours, more preferably 36 hours.

[0066] In this invention, the topcoat is preferably a commercially available topcoat, specifically Dulux or Nippon topcoat; the preferred method of applying the topcoat is brushing; the preferred method of brushing is roller coating; the preferred roller coating equipment is a short-nap roller; the preferred number of applications of the topcoat is 1-2; the application of the topcoat is preferably to achieve uniformity, no missed areas, no runs, and consistent overall gloss. This invention, through the application of a topcoat, enhances overall weather resistance, stain resistance, and water resistance, and makes the wall surface more glossy and textured.

[0067] In this invention, the process of applying a topcoat preferably includes wall cleaning and acceptance.

[0068] The construction method provided by this invention produces a crystal stone coating that has the following beneficial effects: (1) Color and pattern: The color meets the target requirements, the overall color is uniform and consistent, and there is no color difference or unevenness; (2) Surface effect: The texture particles are evenly distributed, without mechanical scars, missed spraying, or dripping; (3) Dividing seams: consistent width and depth, straight horizontally and vertically, with clear and neat edges; (4) Adhesion: Cross-cut test, adhesion reaches level 0 standard; (5) Overall effect: It has a realistic natural stone effect when viewed from a distance, and is flat and clean when viewed up close.

[0069] To further illustrate the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments.

[0070] In the following specific embodiments of the present invention, the modified bentonite is BP-188L modified bentonite produced by Zhejiang Fenghong New Material Co., Ltd.; the bactericide is ZY-MBS high-temperature resistant bactericide and preservative produced by Shanghai Zhiyi Chemical Technology Co., Ltd.; the defoamer is SN-919 mineral oil general-purpose water-based defoamer produced by Shanghai Snow New Material Co., Ltd.; the slip agent is slip agent produced by Jinzhou Hongyuan Cellulose Co., Ltd.; the multifunctional additive is AMP-95 deodorizing neutralizer produced by Shanghai Zhiyi Chemical Technology Co., Ltd.; the polyurethane thickener is R-8W nonionic associative polyurethane thickener produced by Shanghai Snow New Material Co., Ltd.; and the high-temperature calcined sand is high-temperature calcined sand produced by Nanzhao Jiacheng Mining Co., Ltd.

[0071] Example 1 This embodiment prepares a crystal stone coating with the following specific components: 14 kg of purified water, 0.1 kg of modified bentonite, 0.6 kg of compound cellulose (hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose in a mass ratio of 4.5:1), 0.2 kg of bactericide, 0.2 kg of defoamer, 0.2 kg of slip agent, 0.4 kg of film-forming aid (dodecyl alcohol ester), 0.4 kg of ethylene glycol, 0.1 kg of multifunctional additive, 15 kg of resin emulsion (silicone-acrylic emulsion with a solid content of 43%), 0.15 kg of polyurethane thickener, and 70 kg of 30-mesh high-temperature calcined sand. The specific steps for preparing the crystal stone coating in this embodiment are as follows: Pure water, modified bentonite, compound cellulose, bactericide, defoamer, and slip agent are slowly added to a container in sequence. The mixture is dispersed at 900 rpm for 30 minutes until no lumps form. The speed is then reduced to 450 rpm, and film-forming aid, ethylene glycol, and multifunctional additive are added in sequence. The mixture is stirred and dispersed for 5 minutes. Resin emulsion is then added and stirred until evenly dispersed. A polyurethane thickener aqueous solution (the mass ratio of polyurethane thickener to water is 1:2) is then slowly added. After standing for 20 minutes, no thickening is observed. High-temperature calcined sand is added and stirred until evenly mixed to obtain the crystal stone coating.

[0072] The construction method, process route, and specific steps of the crystal stone coating in this embodiment are as follows: Process route: Base layer inspection and treatment → Apply crack-resistant and waterproof putty (2 coats) → Sanding and curing → Apply alkali-resistant sealing primer (1 coat) → Mark lines, divide into sections, and apply tape → Apply crystal stone paint (2 coats) → Remove tape → Apply topcoat (2 coats) → Cleaning and acceptance.

[0073] (1) Grassroots inspection and handling: Inspection: The pH value of the base layer is 9, and the moisture content is 5.5%; the flatness error is less than 3mm when checked with a 2-meter straightedge.

[0074] Treatment: Remove dust, oil, mold release agent and other debris from the surface; chisel away hollow and cracked areas and repair them with Three Trees polymer mortar to make them smooth; sand down obvious uneven parts or fill them with Three Trees polymer mortar.

[0075] (2) Apply crack-resistant and waterproof putty: Use commercially available Nippon anti-crack and waterproof putty, strictly follow the product instructions to add water, stir evenly with an electric drill, let it stand and mature for 10 minutes, stir slightly, and then apply it with a trowel, applying two coats with the two coats applied perpendicular to each other, so that the entire wall surface is flat, smooth, and free of scratches.

[0076] (3) Polishing and maintenance: Sanding: After the crack-resistant and waterproof putty layer has dried at room temperature for 24 hours, sand the wall surface with 320# sandpaper to remove plaster marks and high spots. After sanding, thoroughly remove any dust from the wall surface with a brush.

[0077] Curing: Spray water at room temperature for 3 days, ensuring the water does not flow back and the mixture is fully cured.

[0078] (4) Apply alkali-resistant sealing primer: Apply one coat of commercially available Nippon anti-alkali sealing primer evenly with a roller, ensuring no missed areas, uniform film formation, and no sagging, then allow to dry at room temperature for 8 hours.

[0079] (5) Marking lines, dividing into sections, and applying tape: According to the design drawings required by the client, mark the lines and divide the space into sections, with a 10mm gap width between the sections. Use special masking tape to stick the tape along the marked lines, ensuring the lines are straight and the tape adheres firmly without peeling.

[0080] (6) Applying crystal stone coating: Stir the crystal stone coating to be used. Then, using a 600mm wide stainless steel trowel, take a 2mm thick portion of the crystal stone slurry and apply it at a 45-degree angle with a uniform speed, completing the application in one go for an even coverage without any blooming. The application temperature should be 15 degrees Celsius, and the humidity should be less than 85%. Do not apply during strong winds, rain, or snow.

[0081] (7) Remove the tape: After the crystal stone paint is applied, let it stand for 15 minutes until the surface of the crystal stone paint is dry. Immediately peel off the tape at a 45-degree angle at a uniform speed to make the edges of the dividing seams neat and sharp.

[0082] (8) Apply a topcoat: After the crystal stone coating has stood at room temperature for 24 hours, use a short-nap roller to evenly apply one coat of commercially available Three Trees topcoat, ensuring even coverage without any missed spots or runs, and maintaining a consistent overall gloss.

[0083] (9) Cleaning and acceptance.

[0084] Example 2 This embodiment prepares a crystal stone coating with the following specific components: 16 kg of purified water, 4 kg of modified bentonite, 8 kg of compound cellulose (hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose in a mass ratio of 5.5:1), 4 kg of bactericide, 4 kg of defoamer, 4 kg of slip agent, 6 kg of film-forming aid (dodecyl alcohol ester), 6 kg of ethylene glycol, 1 kg of multifunctional additive, 20 kg of resin emulsion (silicone-acrylic emulsion with a solid content of 45%), 0.19 kg of polyurethane thickener, and 75 kg of 20-mesh high-temperature calcined sand.

[0085] The specific steps for preparing the crystal stone coating in this embodiment are as follows: Pure water, modified bentonite, compound cellulose, bactericide, defoamer, and slip agent are slowly added to a container in sequence. The mixture is dispersed at 900 rpm for 30 minutes until no lumps form. The speed is then reduced to 450 rpm, and film-forming aid, ethylene glycol, and multifunctional additive are added in sequence. The mixture is stirred and dispersed for 10 minutes. Resin emulsion is then added and stirred until evenly dispersed. A polyurethane thickener aqueous solution (the mass ratio of polyurethane thickener to water is 1:2) is then slowly added. After standing for 20 minutes, no thickening is observed. High-temperature calcined sand is added and stirred until evenly mixed to obtain the crystal stone coating.

[0086] The construction method, process route, and specific steps of the crystal stone coating in this embodiment are as follows: Process route: Base layer inspection and treatment → Apply crack-resistant and waterproof putty (2 coats) → Sanding and curing → Apply alkali-resistant sealing primer (2 coats) → Mark lines, divide into sections, and apply tape → Apply crystal stone paint (2 coats) → Remove tape → Apply topcoat (2 coats) → Cleaning and acceptance.

[0087] (1) Grassroots inspection and handling: Inspection: The pH value of the base layer is 10, and the moisture content is 3.6%; the flatness error is less than 3mm when checked with a 2-meter straightedge.

[0088] Treatment: Remove dust, oil, mold release agent and other debris from the surface; chisel away hollow and cracked areas and repair them with Three Trees polymer mortar to make them smooth; sand down obvious uneven parts or fill them with Three Trees polymer mortar.

[0089] (2) Apply crack-resistant and waterproof putty: Use commercially available Nippon anti-crack and waterproof putty, strictly follow the product instructions to add water, stir evenly with an electric drill, let it stand and mature for 10 minutes, stir slightly, and then apply it with a trowel, applying two coats with the two coats applied perpendicular to each other, so that the entire wall surface is flat, smooth, and free of scratches.

[0090] (3) Polishing and maintenance: Sanding: After the crack-resistant and waterproof putty layer has dried at room temperature for 48 hours, sand the wall surface with 400# sandpaper to remove plaster marks and high spots. After sanding, thoroughly remove any dust from the wall surface with a brush or hair dryer.

[0091] Curing: Spray water at room temperature for 7 days, ensuring the water does not flow back and the mixture is fully cured.

[0092] (4) Apply alkali-resistant sealing primer: Apply one coat of commercially available Nippon anti-alkali sealing primer evenly with a roller, ensuring no missed areas, uniform film formation, and no sagging, then allow to dry at room temperature for 8 hours.

[0093] (5) Marking lines, dividing into sections, and applying tape: According to the client's design drawings, mark the lines and divide the space into sections, with a 20mm gap between the sections. Use masking tape to apply the tape along the marked lines, ensuring the lines are straight and the tape adheres firmly without peeling.

[0094] (6) Applying crystal stone coating: Stir the crystal stone coating to be used. Then, using an 800mm wide stainless steel trowel, take a 3mm thick portion of the crystal stone slurry and apply it at a 45-degree angle with a uniform speed, completing the application in one go for an even coverage without any blooming. The application temperature should be 35 degrees Celsius, and the humidity should be less than 85%. Do not apply during strong winds, rain, or snow.

[0095] (7) Remove the tape: After the crystal stone paint is applied, let it stand for 30 minutes until it is surface dry. Immediately peel off the tape at a 45-degree angle at a uniform speed to make the edges of the dividing seams neat and sharp.

[0096] (8) Apply a topcoat: After the crystal stone coating has stood at room temperature for 48 hours, use a short-nap roller to evenly apply two coats of commercially available Dulux topcoat, ensuring even coverage without any missed spots or runs, and achieving a consistent overall gloss.

[0097] (9) Cleaning and acceptance.

[0098] Example 3 This embodiment prepares a crystal stone coating with the following specific components: 15 kg of purified water, 2.5 kg of modified bentonite, 7 kg of compound cellulose (hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose in a mass ratio of 5:1), 3 kg of bactericide, 4 kg of defoamer, 2 kg of slip agent, 5 kg of film-forming aid (dodecyl alcohol ester), 6 kg of ethylene glycol, 1 kg of multifunctional additive, 17 kg of resin emulsion (silicone-acrylic emulsion with a solid content of 44%), 0.17 kg of polyurethane thickener, and 75 kg of 40-mesh high-temperature calcined sand.

[0099] The specific steps for preparing the crystal stone coating in this embodiment are as follows: Pure water, modified bentonite, compound cellulose, bactericide, defoamer, and slip agent are slowly added to a container in sequence. The mixture is dispersed at 900 rpm for 30 minutes until no lumps form. The speed is then reduced to 450 rpm, and film-forming aid, ethylene glycol, and multifunctional additive are added in sequence. The mixture is stirred and dispersed for 10 minutes. Resin emulsion is then added and stirred until evenly dispersed. A polyurethane thickener aqueous solution (the mass ratio of polyurethane thickener to water is 1:2) is then slowly added. After standing for 20 minutes, no thickening is observed. High-temperature calcined sand is added and stirred until evenly mixed to obtain the crystal stone coating.

[0100] The construction method, process route, and specific steps of the crystal stone coating in this embodiment are as follows: Process route: Base layer inspection and treatment → Apply crack-resistant and waterproof putty (2 coats) → Sanding and curing → Apply alkali-resistant sealing primer (2 coats) → Mark lines, divide into sections, and apply tape → Apply crystal stone paint (2 coats) → Remove tape → Apply topcoat (2 coats) → Cleaning and acceptance.

[0101] (1) Grassroots inspection and handling: Inspection: The pH value of the base layer is 8, and the moisture content is 7.3%; the flatness error is less than 3mm when checked with a 2-meter straightedge.

[0102] Treatment: Remove dust, oil, mold release agent and other debris from the surface; chisel away hollow and cracked areas and repair them with Sedex polymer mortar to make them smooth; sand down obvious uneven parts or fill them with Sedex polymer mortar.

[0103] (2) Apply crack-resistant and waterproof putty: Use commercially available Dulux crack-resistant and waterproof putty, strictly follow the product instructions to add water, stir evenly with an electric drill, let it stand and mature for 10 minutes, stir slightly, and then apply it with a trowel, applying two coats with the two coats applied perpendicular to each other, so that the entire wall surface is flat, smooth, and free of scratches.

[0104] (3) Polishing and maintenance: Sanding: After the crack-resistant and waterproof putty layer has dried at room temperature for 40 hours, sand the wall surface with 400# sandpaper to remove plaster marks and high spots. After sanding, thoroughly remove any dust from the wall surface with a brush or hair dryer.

[0105] Curing: Spray water at room temperature for 6 days, ensuring the water does not flow back and the mixture is fully cured.

[0106] (4) Apply alkali-resistant sealing primer: Apply one coat of commercially available alkali-resistant sealing primer evenly with a roller, ensuring no missed areas, uniform film formation, and no sagging, then allow to dry at room temperature for 8 hours.

[0107] (5) Marking lines, dividing into sections, and applying tape: According to the client's design drawings, mark the lines and divide the space into sections, with a 20mm gap between the sections. Use masking tape to apply the tape along the marked lines, ensuring the lines are straight and the tape adheres firmly without peeling.

[0108] (6) Applying crystal stone coating: Stir the crystal stone coating to be used, then use an 800mm wide stainless steel trowel to take a portion of the crystal stone slurry (3mm thick) and apply it at a 45-degree angle at a uniform speed, completing the same area in one go, ensuring even coverage and no blooming. The application temperature should be 25 degrees Celsius, and the humidity should be less than 85%. Do not apply in windy, rainy, or snowy weather.

[0109] (7) Remove the tape: After the crystal stone paint is applied, let it stand for 25 minutes until the surface of the crystal stone paint is dry. Immediately peel off the tape at a 45-degree angle at a uniform speed to make the edges of the dividing seams neat and sharp.

[0110] (8) Apply a topcoat: After the crystal stone coating has stood at room temperature for 36 hours, use a short-nap roller to evenly apply two coats of commercially available Dulux topcoat, ensuring even coverage without any missed spots or runs, and achieving a consistent overall gloss.

[0111] (9) Cleaning and acceptance.

[0112] Test Example 1 The adhesion of the crystal stone coating of Example 1 was tested using the cross-cut test. The test results showed that the adhesion of the crystal stone coating of the present invention reached the 0-level standard.

[0113] Test Example 2 The crystal stone coating of Example 1 was observed, and the results are as follows: Figure 1 As shown.

[0114] according to Figure 1 As can be seen, the crystal stone coating prepared by the construction method of this invention has a realistic natural stone effect when viewed from a distance, and is smooth and clean when viewed up close; the color and pattern meet the design requirements, are uniform and consistent overall, and have no blooming or color difference; the surface texture particles are evenly distributed, with no mechanical scars, no missed spraying, and no dripping; the width and depth of the dividing joints are consistent, horizontal and vertical are straight, and the edges are clear and neat.

[0115] The embodiments of the present invention have been described above; however, these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. All other embodiments obtained by those skilled in the art based on the above embodiments of the present invention without inventive effort are within the protection scope of the present invention.

Claims

1. A crystal stone coating, characterized in that, The components include the following parts by mass: 70-75 parts of high-temperature calcined sand, 15-20 parts of resin emulsion, 6-8 parts of compound cellulose, 4-6 parts of film-forming aid, 4-6 parts of ethylene glycol, 2-4 parts of bactericide, 2-4 parts of defoamer, 2-4 parts of slip agent, 1-4 parts of modified bentonite, 1 part of multifunctional additive, 14-16 parts of water and polyurethane thickener; The amount of polyurethane thickener added is based on the viscosity of the crystal stone coating being 100~100KU.

2. The crystal stone coating according to claim 1, characterized in that, The particle size of the high-temperature calcined sand is 20-40 mesh.

3. The crystal stone coating according to claim 1 or 2, characterized in that, The resin emulsion is a silicone-acrylic emulsion; The solid content of the resin emulsion is 43-45%.

4. The crystal stone coating according to claim 1, characterized in that, The compounded cellulose includes hydroxyethyl methyl cellulose and hydroxypropyl methyl cellulose; The mass ratio of hydroxyethyl methylcellulose to hydroxypropyl methylcellulose is 4.5~5.5:

1.

5. The crystal stone coating according to claim 1 or 4, characterized in that, The modified bentonite includes montmorillonite, quartz, calcite, and quaternary ammonium bentonite.

6. The method for preparing the crystal stone coating according to any one of claims 1 to 5, characterized in that, Includes the following steps: (1) The compound cellulose, modified bentonite, bactericide, defoamer, slip agent and part of water are mixed to obtain a first mixture; (2) The first mixture is mixed with the film-forming aid, ethylene glycol and the second multifunctional aid to obtain the second mixture; (3) The second mixture is mixed with the resin emulsion to obtain a third mixture; (4) The third mixture is mixed with the polyurethane thickener and the remaining water to obtain the fourth mixture; (5) The fourth mixture is mixed with the fifth high-temperature calcined sand to obtain the crystal stone coating.

7. A method for applying the crystal stone coating according to any one of claims 1 to 5 or the crystal stone coating obtained by the preparation method according to claim 6, characterized in that, Includes the following steps: The substrate is then waterproofed, sanded, cured, coated with an alkali-resistant sealing primer, then coated with crystal stone paint and finally coated with a topcoat. The crystal stone coating is the crystal stone coating according to any one of claims 1 to 5 or the crystal stone coating obtained by the preparation method according to claim 6.

8. The construction method according to claim 7, characterized in that, The application temperature for the scraped crystal stone coating is 5~35 degrees Celsius, and the humidity is less than 85%. The application of the crystal stone coating is performed twice.

9. The construction method according to claim 7 or 8, characterized in that, The application of the crystal stone coating includes the following steps: using a stainless steel trowel to apply a 2-3mm thick layer of crystal stone slurry at a 45-degree angle at a uniform speed.

10. The construction method according to claim 7, characterized in that, The pH value of the substrate is 8~10; The moisture content of the base layer is no more than 10%; The flatness error of the base layer shall not exceed 3 mm.

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