Limestone-imitated effect coating as well as preparation method and coating method thereof

Abstract

The invention relates to a limestone-stone-effect-imitating coating and a preparation method and a coating method thereof, and relates to the technical field of coatings, and the limestone-stone-effect-imitating coating comprises a limestone substrate layer material, a limestone main material layer material and a color repairing layer material. The limestone-imitated stone effect coating is simple in construction process, not prone to floating and high in hardness, the limestone-imitated effect is achieved through scraping and polishing of the three main materials including the limestone base material, the limestone main material and the color repairing layer, the construction process is simplified, the construction difficulty is reduced, and the construction cost is reduced. The limestone-imitating effect constructed in a fool mode has the advantages of being high in hardness, rich and natural in color, not prone to floating and good in reproducibility, and the defects of an existing limestone-imitating stone effect coating are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a limestone-like stone effect coating and a preparation method and a coating method thereof. Background Art

[0002] In the modern construction industry, the selection of exterior wall decoration materials is crucial to the overall aesthetics and durability of the building. Traditional stone materials such as limestone are popular for their unique texture, color and hardness, and are widely used in the decoration of building exterior walls. However, due to the weight of the stone itself, it is prone to fall off over time. Therefore, in order to meet people's demand for exterior wall decoration, safer imitation limestone stone effect paint came into being. Imitation limestone stone effect paint is mainly used to imitate special irregular pattern series of stones such as limestone, German beige, limestone, etc., and is particularly suitable for the facade decoration of French buildings that pursue natural and elegant styles.

[0003] However, the formula and construction process of imitation limestone effect paint have higher technical requirements than traditional real stone paint, texture paint and other products. At present, most imitation limestone effect paint products on the market have the following problems: the construction process of imitation limestone effect paint is complicated, and the color point texture is easy to blur, which is a test of the construction level of the construction workers, and the overall effect often does not match the sample.

[0004] Therefore, it is urgent to develop a limestone-like stone effect paint that is simple to apply and not prone to blooming to solve the above problems. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a limestone-like stone effect paint and a preparation method and a coating method thereof.

[0006] In a first aspect, the present invention provides a limestone-like stone effect paint, the limestone-like stone effect paint comprising a limestone base material layer, a limestone main material layer and a color correction layer;

[0007] The limestone substrate layer comprises the following components in parts by weight:

[0008] 10-15 parts of emulsion A, 0.1-0.3 parts of cellulose A, 0.2-0.4 parts of defoaming agent, 0.3-0.4 parts of dispersant, 0.1-0.2 parts of bentonite, 0.1-0.5 parts of titanium dioxide, 50-60 parts of heavy calcium powder, 10-15 parts of white sand, 10-15 parts of water, 0.2-0.4 parts of thickener, 0.5-1 parts of film-forming aid, 0.1-0.2 parts of bactericide, 1-1.5 parts of antifreeze agent and 0.05-0.1 parts of pH adjuster;

[0009] The limestone main material layer comprises the following components in parts by weight:

[0010] 90-95 parts of limestone base material, 4-7 parts of color point base paint and 2-4 parts of granulation liquid;

[0011] The color correction layer material comprises the following components in parts by weight:

[0012] 50-60 parts of water, 10-15 parts of emulsion A, 0.2-0.5 parts of dispersant, 0.1-0.2 parts of wetting agent, 0.2-0.3 parts of defoaming agent, 1-1.5 parts of film-forming aid, 0.5-1 parts of antifreeze agent, 0.1-0.3 parts of cellulose A, 0.1-0.15 parts of pH adjuster, 0.1-0.15 parts of bentonite, 0.1-0.5 parts of titanium dioxide, 1-5 parts of kaolin, 5-10 parts of heavy calcium powder, 0.1-0.2 parts of thickener and 0.05-0.1 parts of color paste.

[0013] Furthermore, the limestone substrate layer comprises the following components in parts by weight:

[0014] Emulsion A 13 parts, cellulose A 0.2 parts, defoamer 0.3 parts, dispersant 0.35 parts, bentonite 0.15 parts, titanium dioxide 0.3 parts, heavy calcium powder 55 parts, white sand 12 parts, water 12 parts, thickener 0.3 parts, film-forming aid 0.7 parts, bactericide 0.15 parts, antifreeze 1.2 parts and pH adjuster 0.1 parts.

[0015] Furthermore, the emulsion A is RS-998AP from Badfull, and the cellulose A is 250HBR from Ashland.

[0016] Furthermore, the limestone base material comprises the following components in parts by weight:

[0017] Emulsion B 10-15 parts, cellulose B 0.1-0.3 parts, bentonite 0.1-0.2 parts, defoamer 0.2-0.4 parts, titanium dioxide 0.1-0.5 parts, heavy calcium powder 50-60 parts, water 10-15 parts, thickener 0.1-0.2 parts, film-forming aid 0.5-1 parts, bactericide 0.1-0.2 parts, antifreeze 1-1.5 parts, pH adjuster 0.05-0.1 parts and mica flakes 0.01-0.2 parts.

[0018] Furthermore, the color dot base paint comprises the following components in parts by weight:

[0019] 10-20 parts of water, 0.7-0.9 parts of cellulose B, 0.1-0.2 parts of defoaming agent, 0.3-0.5 parts of dispersant, 0.1-0.2 parts of bactericide, 0.1-0.2 parts of antifreeze agent, 0.1-0.2 parts of pH adjuster, 0.5-1 parts of titanium dioxide, 1-2 parts of kaolin, 50-60 parts of 300 mesh heavy calcium powder, 13-15 parts of emulsion B, 1-2 parts of film-forming aid, 4.5-5.5 parts of 10% by weight protective glue.

[0020] Furthermore, the emulsion B is a pure acrylic emulsion; the cellulose B is EHM500 produced by Akzo Nobel; and the main component of the protective colloid is lithium magnesium silicate.

[0021] Furthermore, the granulation liquid comprises the following components in parts by weight:

[0022] 95 parts of water, 5 parts of protective glue and 0.2 parts of suspending agent;

[0023] Wherein, the main component of the protective glue is lithium magnesium silicate.

[0024] In a second aspect, the present invention provides a method for preparing the limestone-like stone effect coating according to any one of the first aspects, such as Figure 1 As shown, the preparation method comprises the following steps:

[0025] Stirring and mixing the components in the limestone base material layer to obtain the limestone base material layer;

[0026] Adding the color dot base paint into the granulation liquid and stirring and mixing to form a mixture containing the color dots;

[0027] Adding the mixture containing the color dots into the limestone base material and stirring and mixing them to obtain the limestone main material layer material;

[0028] The components in the color correction layer material are stirred and mixed to obtain the color correction layer material.

[0029] In a second aspect, the present invention provides a coating method of the imitation limestone stone effect coating according to any one of the first aspects, the coating method comprising the following steps:

[0030] Apply alkali-resistant primer on the surface of the substrate and dry it;

[0031] Scrape the limestone base material on the surface of the substrate after applying the alkali-resistant primer, and grind it flat after drying;

[0032] After the limestone base material is scraped, the limestone main material is scraped on the surface of the substrate, and then it is polished and smoothed after drying;

[0033] Spray the color repairing layer material on the surface of the base material after scraping the limestone main material;

[0034] After spraying the color correction layer, apply a topcoat varnish on the surface of the substrate.

[0035] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0036] The embodiment of the present invention provides an imitation limestone stone effect paint and a preparation method and a coating method thereof. The present invention provides an imitation limestone stone effect paint with a simple construction process, not easy to fade and high hardness. The imitation limestone effect is achieved by scraping and polishing three main materials, namely, a limestone base material, a limestone main material and a color repair layer, thereby simplifying the construction process and reducing the construction difficulty. The imitation limestone effect of its "fool-proof" construction has high hardness, rich and natural colors, is not easy to fade and has good reproducibility, thereby making up for the shortcomings of existing imitation limestone stone effect paints. Specifically: the limestone base material is made smooth, easy to grind into powder, and has high hardness through the scientific combination of emulsion, powder, and thickening system; the limestone main material is made by burying colored dots in the main material in advance, and forming a texture color effect through scraping. The color distribution is natural, which solves the problem of uneven color and other flowery problems caused by the subjective operation of the construction workers. At the same time, the addition of natural mica flakes simulates the metallic glittering effect of stone, making the overall imitation stone effect more realistic. The color repair layer is sprayed with dots, and the semi-transparent color forms a color layering with the colored dots of the main material, making the overall imitation limestone effect more natural, more integrated, and more realistic. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0039] Figure 1 A schematic flow chart of a method for preparing a limestone-like stone effect coating provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0042] The construction process of imitation limestone stone effect paint on the market is complicated, and its construction process includes: alkali-resistant primer layer, main material layer, texture layer, color layer and topcoat. The texture layer and color effect layer are either painted with monochrome paint and sprinkled with color using a spray gun, or sprayed with water-based watercolor dots. They all face common disadvantages: uneven dots are very easy to bloom, uneven colors, etc. The construction effect is positively correlated with the level of the construction workers, and the effect on the construction site is often far from the model effect.

[0043] Therefore, the object of the present invention is to provide a limestone-like stone effect paint with simple construction process, low blooming and high hardness, and a preparation method and a coating method thereof.

[0044] The technical solution provided by the present invention is as follows:

[0045] A limestone-like stone effect paint with simple construction process, low blooming and high hardness comprises three parts: limestone base material, limestone main material and color-correcting layer material; its coating process includes:

[0046] Step 1: Roll or spray anti-alkali primer (the general name of anti-alkali primer in the industry, its functions are 1. to prevent the substrate (heavy alkaline substrate such as cement mortar) from damaging the coating due to alkali efflorescence; 2. to increase the adhesion between the coating and the substrate; any commercially available anti-alkali primer can be directly used) and wait for it to dry;

[0047] Step 2: Scrape the limestone base material and smooth it with coarse sandpaper after it dries;

[0048] Step 3: scrape the main limestone material and polish it with fine sandpaper after it dries;

[0049] Step 4: Spray the color and embellishment based on the third step;

[0050] Step 5: Roll or spray the topcoat varnish (topcoat varnish is a common name in the industry, and any commercially available topcoat varnish can be directly used);

[0051] The components and weight percentages of the limestone base material include: 10-15 parts of emulsion A, 0.1-0.3 parts of cellulose A, 0.2-0.4 parts of defoamer, 0.3-0.4 parts of dispersant, 0.1-0.2 parts of bentonite, 0.1-0.5 parts of titanium dioxide, 50-60 parts of 300-mesh heavy calcium powder, 10-15 parts of 100-mesh white sand, 10-15 parts of water, 0.2-0.4 parts of thickener, 0.5-1 parts of film-forming aid, 0.1-0.2 parts of bactericide, 1-1.5 parts of antifreeze, and 0.05-0.1 parts of pH regulator;

[0052] The preparation method of the limestone base material comprises: mixing and dispersing water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH adjuster, bactericide, bentonite, titanium dioxide, 300-mesh heavy calcium powder, and 100-mesh white sand in proportion, and then adding emulsion and thickener in proportion and mixing to obtain the limestone base material;

[0053] The main limestone material includes limestone base material, color point base paint, and granulation liquid; in terms of weight, it includes: 90-95 parts of limestone base material, 4-7 parts of color point base paint, and 2-4 parts of granulation liquid;

[0054] The components and weight percentages of the components of the limestone base material include: 10-15 parts of emulsion B, 0.1-0.3 parts of cellulose B, 0.1-0.2 parts of bentonite, 0.2-0.4 parts of defoamer, 0.1-0.5 parts of titanium dioxide, 50-60 parts of 300-mesh heavy calcium powder, 10-15 parts of water, 0.1-0.2 parts of thickener, 0.5-1 parts of film-forming aid, 0.1-0.2 parts of bactericide, 1-1.5 parts of antifreeze, 0.05-0.1 parts of pH regulator, and 0.01-0.2 parts of mica flakes;

[0055] The preparation method of the limestone base material comprises: mixing and dispersing water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH adjuster, bactericide, bentonite, titanium dioxide, and 300-mesh heavy calcium powder in proportion, and then adding emulsion, thickener, and mica flakes in proportion and mixing and dispersing the mixture to obtain the limestone base material;

[0056] The components and weight percentage contents of the color dot base paint include: 10-20 parts of water, 0.7-0.9 parts of cellulose B, 0.1-0.2 parts of defoamer, 0.3-0.5 parts of dispersant, 0.1-0.2 parts of fungicide, 0.1-0.2 parts of antifreeze, 0.1-0.2 parts of pH adjuster, 0.5-1 parts of titanium dioxide, 1-2 parts of kaolin, 50-60 parts of 300 mesh heavy calcium powder, 13-15 parts of emulsion B, 1-2 parts of film-forming aid, and 4.5-5.5 parts of 10% protective glue solution; the components and weight percentage contents of the 10% protective glue solution are: 90 parts of water and 10 parts of protective glue; add the protective glue and water into the reaction kettle in proportion and stir until completely dissolved to obtain the 10% protective glue solution;

[0057] The preparation method of the color dot base paint comprises: mixing and dispersing water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH adjuster, fungicide, titanium dioxide, and 300 mesh heavy calcium powder in proportion, and then adding emulsion and 10% protective glue in proportion and mixing to obtain the color dot base paint;

[0058] The components and weight percentages of the granulation liquid are as follows: 95 parts of water, 5 parts of protective gel, and 0.2 parts of suspending agent; the protective gel, suspending agent, and water are added into a reaction kettle in proportion and stirred until completely dissolved to obtain a granulation liquid;

[0059] The preparation method of the above limestone main material is: adjust the color point base paint into different colors as needed, then add the adjusted color base paint into the granulation liquid and cut into small color points of appropriate size, and finally add the small color points into the limestone base material and mix evenly to obtain the limestone main material color;

[0060] The components of the color repair layer material and the weight proportions of the components include: 50-60 parts of water, 10-15 parts of emulsion A, 0.2-0.5 parts of dispersant, 0.1-0.2 parts of wetting agent, 0.2-0.3 parts of defoaming agent, 1-1.5 parts of film-forming aid, 0.5-1 parts of antifreeze agent, 0.1-0.3 parts of cellulose A, 0.1-0.15 parts of pH regulator, 0.1-0.15 parts of bentonite, 0.1-0.5 parts of titanium dioxide, 1-5 parts of kaolin, 5-10 parts of 800 mesh heavy calcium powder, 0.1-0.2 parts of thickener, and 0.05-0.1 parts of color paste;

[0061] The preparation method of the above-mentioned color correction layer material includes: stirring and dispersing water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH adjuster, bactericide, bentonite, titanium dioxide, and heavy calcium powder in proportion, and then adding emulsion, thickener, and color paste in proportion and stirring to obtain the color correction layer material.

[0062] It should be noted that the components and raw materials involved in the imitation limestone effect paint and the preparation method thereof provided in the embodiments of the present invention, unless otherwise specified or specified, can be directly commercially available products or homemade using existing public preparation methods; at the same time, the steps and parameters involved, unless otherwise specified or specified, can be carried out according to the existing processing technology of the imitation limestone effect paint or directly using existing equipment, and the present invention document will not describe them one by one.

[0063] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0064] The detailed information of the main raw materials involved in the following examples and comparative examples are as follows:

[0065] The main component of the protective glue used is lithium magnesium silicate, purchased from Grace with the brand name GU;

[0066] The cellulose B used was EHM500 from Akzo Nobel;

[0067] The cellulose A used was 250HBR from Ashland;

[0068] Emulsion B is pure acrylic emulsion, purchased from ROSF with the material grade ROSF 6603;

[0069] Emulsion A was purchased from RS-998AP of Bardeful Company;

[0070] The bentonite used was purchased from BASF with the brand ATT-50;

[0071] The film-forming aid used was alcohol ester twelve, purchased from Eastman Company;

[0072] Ethylene glycol was used as antifreeze agent and was purchased from Guangzhou Huaxin Chemical Technology Co., Ltd.

[0073] The pH adjuster used was AMP-935, purchased from Angus Company;

[0074] The titanium dioxide used was purchased from Dongjia SR-237;

[0075] The 300-mesh and 800-mesh heavy calcium powder used came from Jiaoling Jinpeng Fine Chemical Co., Ltd.

[0076] The 100-mesh white sand used was from Xinhuafa Powder Co., Ltd.

[0077] The defoamer used was NXZ, purchased from BASF;

[0078] The dispersant used was B03 from Xianchuang;

[0079] The thickener is Rohm and Haas ASE-60;

[0080] The fungicide used was isothiazolinone, purchased from Thor Specialty Chemicals.

[0081] Example 1

[0082] This example provides a limestone-like stone effect paint, which consists of three parts: limestone base material, limestone main material, and color correction layer material; its coating process is:

[0083] Step 1: Roll or spray the anti-alkali primer (specifically, the anti-alkali primer is the stone-imitation transparent primer produced by Carpoly) and wait for it to dry;

[0084] Step 2: Scrape the limestone base material and smooth it with coarse sandpaper after it dries;

[0085] Step 3: scrape the main limestone material and polish it with fine sandpaper after it dries;

[0086] Step 4: Spray the color repair layer material based on the third step;

[0087] Step 5: Roll or spray the topcoat varnish (the topcoat varnish is specifically the lotus leaf silicone topcoat produced by Carpoly);

[0088] The components and weight percentages of the limestone base material are as follows: 13 parts of emulsion A, 0.3 parts of cellulose A, 0.2 parts of defoamer, 0.3 parts of dispersant, 0.15 parts of bentonite, 0.2 parts of titanium dioxide, 55 parts of 300-mesh heavy calcium powder, 10 parts of 100-mesh white sand, 10 parts of water, 0.2 parts of thickener, 0.5 parts of film-forming aid, 0.15 parts of fungicide, 1 part of antifreeze, and 0.1 parts of pH regulator; water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH regulator, fungicide, bentonite, titanium dioxide, 300-mesh heavy calcium powder, and 100-mesh white sand are stirred and dispersed uniformly according to proportion, and the emulsion and thickener are continuously added according to proportion and stirred uniformly to obtain the limestone base material;

[0089] Among them, the main material color of limestone is composed of limestone base material, color point base paint, and granulation liquid, and the weight parts are: 92 parts of limestone base material, 6 parts of color point base paint, and 2 parts of granulation liquid;

[0090] The components and weight percentages of the limestone base material are as follows: 13 parts of emulsion B, 0.2 parts of cellulose B, 0.2 parts of defoamer, 0.15 parts of bentonite, 0.1 parts of titanium dioxide, 50 parts of 300-mesh heavy calcium powder, 10 parts of water, 0.15 parts of thickener, 0.5 parts of film-forming aid, 0.15 parts of fungicide, 1 part of antifreeze, 0.1 parts of pH regulator, and 0.05 parts of mica flakes; water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH regulator, fungicide, bentonite, titanium dioxide, and heavy calcium powder are stirred and dispersed uniformly according to proportion, and emulsion, thickener, and mica flakes are added in proportion and stirred uniformly to obtain the limestone base material;

[0091] The components and weight percentage contents of the color dot base paint are as follows: 20 parts of water, 0.8 parts of cellulose B, 0.15 parts of defoamer, 0.3 parts of dispersant, 0.15 parts of fungicide, 0.2 parts of antifreeze, 0.1 parts of pH regulator, 0.5 parts of titanium dioxide, 1 part of kaolin, 50 parts of 300-mesh heavy calcium powder, 14 parts of emulsion B, 1 part of film-forming aid, and 4.5 parts of 10% protective glue solution; water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH regulator, fungicide, titanium dioxide, and 300-mesh heavy calcium powder are stirred and dispersed uniformly according to proportion, and emulsion and 10% protective glue solution are added in proportion and stirred uniformly to obtain the color dot base paint; the components and weight percentage contents of the 10% protective glue solution are as follows: 90 parts of water and 10 parts of protective glue; the protective glue and water are added into the reaction kettle in proportion and stirred until completely dissolved to obtain the 10% protective glue solution;

[0092] The components and weight percentages of the granulation liquid are as follows: 95 parts of water, 5 parts of protective gel, and 0.2 parts of suspending agent; the protective gel, suspending agent, and water are added into a reaction kettle in proportion and stirred until completely dissolved to obtain a granulation liquid;

[0093] The preparation method of the limestone main material is as follows: the color dot base paint is adjusted into different colors as needed, then the adjusted color base paint is added into the granulation liquid and cut into small color dots of appropriate size, and finally the small color dots are added into the limestone base material and mixed evenly to obtain the limestone main material;

[0094] The components and weight proportions of the color correction layer material are: 60 parts of water, 10 parts of emulsion A, 0.2 parts of dispersant, 0.1 parts of wetting agent, 0.2 parts of defoamer, 1 part of film-forming aid, 0.5 parts of antifreeze, 0.2 parts of cellulose A, 0.1 parts of pH regulator, 0.15 parts of bentonite, 0.2 parts of titanium dioxide, 2 parts of kaolin, 10 parts of 800-mesh heavy calcium powder, 0.2 parts of thickener, and 0.05 parts of color paste; water, cellulose, dispersant, film-forming aid, defoamer, antifreeze, pH regulator, bactericide, bentonite, titanium dioxide, and 300-mesh heavy calcium powder are stirred and dispersed uniformly according to proportion, and the emulsion, thickener, and color paste are continuously added according to proportion and stirred uniformly to obtain the color correction layer material.

[0095] On the basis of the above-mentioned Example 1, Examples 2 to 3 and Comparative Examples 1 to 2 only adjust the coating formula in Example 1, and the rest of the preparation methods and coating methods are the same; wherein, the comparison between Comparative Example 1 and Example 1 is mainly that the amount of limestone base material emulsion is increased, and the powder is reduced; the amount of limestone main material emulsion is increased, and the powder is reduced, and the ratio of limestone base material: color dot base material: granulation liquid of the limestone main material remains unchanged; the comparison between Comparative Example 2 and Example 1 is mainly that the ratio of limestone base material: color dot base material: granulation liquid of the limestone main material is changed; the specific ingredients of the formula of the imitation limestone stone effect coating provided in Examples 1 to 3 and Comparative Examples 1 to 2 and the weight proportions of each ingredient are shown in Table 1.

[0096] Table 1

[0097]

[0098]

[0099]

[0100] Comparative Example 3

[0101] This example provides a conventional imitation limestone stone effect paint and its preparation method and coating method, which specifically includes the following processes:

[0102] The mass composition of the limestone mid-coat is as follows: 10 parts of emulsion, 0.3 parts of cellulose, 0.2 parts of defoaming agent, 0.3 parts of dispersant, 0.15 parts of bentonite, 0.2 parts of titanium dioxide, 10 parts of water, 0.2 parts of thickener, 0.5 parts of film-forming aid, 0.15 parts of bactericide, 1 part of antifreeze agent, and 0.1 parts of pH regulator; water, cellulose, dispersant, film-forming aid, defoaming agent, antifreeze agent, pH regulator, bactericide, bentonite and titanium dioxide are stirred and dispersed evenly according to proportion, and then the emulsion and thickener are added in proportion and stirred evenly to obtain the limestone mid-coat.

[0103] The mass composition of limestone color point texture is as follows: 60 parts of water, 15 parts of emulsion, 0.2 parts of dispersant, 0.1 parts of wetting agent, 0.2 parts of defoamer, 1 part of film-forming aid, 0.5 parts of antifreeze, 0.1 parts of pH regulator, 0.05 parts of color paste; stir and disperse water, dispersant, film-forming aid, defoamer, antifreeze, pH regulator, and bactericide in proportion, continue to add emulsion, thickener, and color paste in proportion and stir evenly to obtain the color repair layer material.

[0104] The painting method is as follows: roll or spray alkali-resistant primer once, scrape limestone mid-coat twice, apply limestone color dot texture 1 to 2 times after grinding, and roll or spray clear coat once.

[0105] Test Case

[0106] In this example, the performance of the imitation limestone effect coatings obtained in the above-mentioned Examples 1 to 3 and Comparative Examples 1 to 3 was tested, and the specific construction process comparison and effect comparison are shown in Table 2.

[0107] Performance test standards in Table 2:

[0108] Grinding test method: The base material is polished with 180-grit sandpaper, and the coating is rubbed back and forth with the same force. The resistance and powder output are scored. The smaller the force and the larger the powder output, the higher the score. The main material is polished with 240-grit sandpaper, and the coating is rubbed back and forth with the same force. The resistance and powder output are scored. The smaller the force and the larger the powder output, the higher the score.

[0109] Hardness test: People from 5 different positions use their fingernails to press the surface and score it based on their own feelings of hardness or softness. The score is 10 points. The higher the score, the higher the hardness. The hardness is determined by averaging the 5 scores, excluding the highest and lowest scores.

[0110] Blooming situation: The evaluator stands 1 meter away from the sample and observes the overall distribution of color dots on the sample. If the distribution is uniform, it will be rated as "no blooming", and if the distribution is uneven, it will be rated as "blooming". Among 5 evaluators, the majority result will be the final result.

[0111] Table 2

[0112]

[0113]

[0114] Various embodiments of the present invention may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present invention; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0115] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A limestone-like stone effect paint, characterized in that: The imitation limestone effect paint comprises a limestone base material layer, a limestone main material layer and a color correction layer material; The limestone substrate layer comprises the following components in parts by weight: Emulsion A 10-15 parts, cellulose A 0.1-0.3 parts, defoamer 0.2-0.4 parts, dispersant 0.3-0.4 parts, bentonite 0.1-0.2 parts, titanium dioxide 0.1-0.5 parts, heavy calcium powder 50-60 parts, white sand 10-15 parts, water 10-15 parts, thickener 0.2-0.4 parts, film-forming aid 0.5-1 parts, fungicide 0.1-0.2 parts, antifreeze 1-1.5 parts and pH adjuster 0.05-0.1 parts; The limestone main material layer comprises the following components in parts by weight: 90-95 parts of limestone base material, 4-7 parts of color point base paint and 2-4 parts of granulation liquid; The color correction layer material comprises the following components in parts by weight: 50-60 parts of water, 10-15 parts of emulsion A, 0.2-0.5 parts of dispersant, 0.1-0.2 parts of wetting agent, 0.2-0.3 parts of defoaming agent, 1-1.5 parts of film-forming aid, 0.5-1 parts of antifreeze agent, 0.1-0.3 parts of cellulose A, 0.1-0.15 parts of pH adjuster, 0.1-0.15 parts of bentonite, 0.1-0.5 parts of titanium dioxide, 1-5 parts of kaolin, 5-10 parts of heavy calcium powder, 0.1-0.2 parts of thickener and 0.05-0.1 parts of color paste.

2. The imitation limestone effect paint according to claim 1, characterized in that: The limestone substrate layer comprises the following components in parts by weight: 13 parts of emulsion A, 0.2 parts of cellulose A, 0.3 parts of defoaming agent, 0.35 parts of dispersant, 0.15 parts of bentonite, 0.3 parts of titanium dioxide, 55 parts of heavy calcium powder, 12 parts of white sand, 12 parts of water, 0.3 parts of thickener, 0.7 parts of film-forming aid, 0.15 parts of bactericide, 1.2 parts of antifreeze agent and 0.1 parts of pH adjuster.

3. The imitation limestone stone effect paint according to claim 1 or 2, characterized in that: The emulsion A is RS-998AP from Bardeful Corporation, and the cellulose A is 250HBR from Ashland.

4. The imitation limestone effect paint according to claim 1, characterized in that: The limestone base material comprises the following components in parts by weight: Emulsion B 10-15 parts, cellulose B 0.1-0.3 parts, bentonite 0.1-0.2 parts, defoamer 0.2-0.4 parts, titanium dioxide 0.1-0.5 parts, heavy calcium powder 50-60 parts, water 10-15 parts, thickener 0.1-0.2 parts, film-forming aid 0.5-1 parts, bactericide 0.1-0.2 parts, antifreeze 1-1.5 parts, pH adjuster 0.05-0.1 parts and mica flakes 0.01-0.2 parts.

5. The imitation limestone stone effect paint according to claim 1, characterized in that: The color dot base paint comprises the following components in parts by weight: 10-20 parts of water, 0.7-0.9 parts of cellulose B, 0.1-0.2 parts of defoaming agent, 0.3-0.5 parts of dispersant, 0.1-0.2 parts of bactericide, 0.1-0.2 parts of antifreeze agent, 0.1-0.2 parts of pH adjuster, 0.5-1 parts of titanium dioxide, 1-2 parts of kaolin, 50-60 parts of 300 mesh heavy calcium powder, 13-15 parts of emulsion B, 1-2 parts of film-forming aid, 4.5-5.5 parts of 10% by weight protective glue.

6. The imitation limestone effect paint according to claim 4 or 5, characterized in that: The emulsion B is pure acrylic emulsion; the cellulose B is EHM500 produced by Akzo Nobel; and the main component of the protective glue is lithium magnesium silicate.

7. The imitation limestone stone effect paint according to claim 1, characterized in that: The granulation liquid comprises the following components in parts by weight: 95 parts of water, 5 parts of protective glue and 0.2 parts of suspending agent; Wherein, the main component of the protective glue is lithium magnesium silicate.

8. A method for preparing the limestone-like stone effect paint according to claims 1 to 7, characterized in that: The preparation method comprises the following steps: Stirring and mixing the components in the limestone base material layer to obtain the limestone base material layer; Adding the color dot base paint into the granulation liquid and stirring and mixing to form a mixture containing the color dots; Adding the mixture containing the color dots into the limestone base material and stirring and mixing them to obtain the limestone main material layer material; The components in the color correction layer material are stirred and mixed to obtain the color correction layer material.

9. A coating method for the limestone-like stone effect paint according to any one of claims 1 to 7, characterized in that: The coating method comprises the following steps: Apply alkali-resistant primer on the surface of the substrate and dry it; Scrape the limestone base material on the surface of the substrate after applying the alkali-resistant primer, and grind it flat after drying; After the limestone base material is scraped, the limestone main material is scraped on the surface of the substrate, and then it is polished and smoothed after drying; Spray the color repairing layer material on the surface of the base material after scraping the limestone main material; After spraying the color correction layer, apply a topcoat varnish on the surface of the substrate.

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