Inorganic texture art paint and preparation method thereof

Abstract

The invention relates to an inorganic texture art coating and a preparation method thereof, and relates to the technical field of art coatings. The inorganic texture art coating comprises the following raw materials by weight: 15-28 parts of water, 2-5 parts of microfibers, 0.2-0.6 parts of thickeners, 0.1-0.4 parts of thixotropic additives, 0.3-1 parts of leveling agents, 0.5-1.2 parts of stabilizers, 4-7 parts of emulsions, 5-20 parts of modified potassium silicate, and 5-20 parts of modified silica sol. The components in the above formula cooperate with each other, and the inorganic texture art coating with thick coating, not easy to crack, stable product storage, rich texture effect, and good fireproof performance is prepared together, which greatly broadens the types of art coatings and has a wide range of practical application value.

Description

Technical Field

[0001] The present invention relates to the technical field of artistic coatings, and in particular to an inorganic textured artistic coating and a preparation method thereof. Background Art

[0002] At present, in the process of interior decoration, there are many kinds of wall decoration materials to choose from, but they can be roughly divided into three categories: board material, wallpaper and wall cloth, and water-based paint. Among them, wallpaper and wall cloth are deeply loved by hotels and some ordinary family residences because of their rich effects, strong decorativeness, and good maintenance in the later stage. However, wallpaper and wall cloth are basically flammable and have low fire resistance. At the same time, a large amount of glue will be used in the process of use, and the environmental protection performance is not high. Wallpaper and wall cloth are not easy to repair and have a short service life. Ordinary water-based paint can avoid some of the problems of wallpaper and wall cloth. Water-based paint is easy to construct and repair in the later stage, has a long service life, does not contain formaldehyde, and has high environmental protection performance. In particular, emulsion-type texture paint can produce the effect of wallpaper and wall cloth according to different processes. The wall surface has a skin-like feel and is delicate and smooth; the surface uses a texture roller to make texture and grain effects, which meets the high-end requirements of wall decoration, has very good decorativeness, and has both the decorativeness of wallpaper and wall cloth and the environmental protection of water-based paint. However, due to the emulsion film formation, the organic content is high, and the paint film will burn when it encounters fire, and the fire resistance of the product is not high.

[0003] Inorganic coatings are mainly formed by silicate films, and the products have outstanding fireproof properties, but there are no reports of inorganic coating products with texture effects. First, the higher the viscosity of silicate inorganic coatings, the more difficult it is to control storage stability, and it is very easy to thicken and gel; second, silicate films have strong rigidity, and thick coatings for texture effects are prone to cracking; finally, there are very few types of thickeners suitable for silicate systems, and the texture effect is difficult to control.

[0004] Therefore, it is urgent to solve the above problems and develop an inorganic texture art coating that is not easy to crack when applied thickly, has stable product storage, and has rich texture effects. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an inorganic texture art paint and a preparation method thereof.

[0006] In a first aspect, the present invention provides an inorganic texture art paint, which comprises the following raw materials in parts by weight:

[0007] 15-28 parts of water, 2-5 parts of microfibers, 0.2-0.6 parts of thickener, 0.1-0.4 parts of thixotropic agent, 0.3-1 parts of leveling agent, 0.5-1.2 parts of stabilizer, 4-7 parts of emulsion, 5-20 parts of modified potassium silicate and 5-20 parts of modified silica sol.

[0008] Furthermore, in parts by weight, the inorganic texture art paint also includes: 0.3-0.7 parts of dispersant, 0.1-0.5 parts of wetting agent, 0.2-0.6 parts of film-forming aid, 0.4-1 parts of defoaming agent, 0.2-1.2 parts of antifreeze agent, 0.1-0.3 parts of pH adjuster, 0.1-0.5 parts of moisturizing agent, 0.1-2 parts of hydrophobic agent, 0.1-0.4 parts of mildewproof agent, 3-15 parts of titanium dioxide, 5-15 parts of calcined kaolin and 20-35 parts of heavy calcium.

[0009] Furthermore, the microfibers are microfibrillated wood fibers with a diameter of less than 50 nm and a length of 50-100 um.

[0010] Furthermore, the thixotropic additive is a nonionic polysaccharide thickener, the thickener is hydroxyethyl cellulose, and the leveling agent is a polyurethane leveling agent.

[0011] Furthermore, the modified potassium silicate is stabilized potassium silicate modified by organosiloxane, and the modulus is 3-4; the modified silica sol is stabilized silica sol modified by organosiloxane, and the particle size is 6-12 nm.

[0012] Furthermore, the stabilizer is a quaternary ammonium salt stabilizer, and the emulsion includes at least one of styrene-acrylic emulsion, pure acrylic emulsion and tert-acrylic emulsion.

[0013] Furthermore, the hydrophobic agent includes at least one of polysiloxane and alkyl siliconate, and the moisturizing agent is polyethylene glycol with a molecular weight of 200-500.

[0014] Furthermore, the dispersant is sodium polyacrylate, and the defoamer includes at least one of an organosilicon-type defoamer, a mineral oil-type defoamer and a polyether-modified organosilicon defoamer.

[0015] Furthermore, the titanium dioxide is rutile titanium dioxide coated with Al2O3 on the surface and prepared by chlorination method, the calcined kaolin has a whiteness greater than 92, the CaCO3 purity in the heavy calcium is greater than 99%, and the mesh size is 600-1500 mesh.

[0016] In a second aspect, the present invention provides a method for preparing the inorganic texture art coating according to any one of the first aspects, the preparation method comprising the following steps:

[0017] 1 / 2 of the formula amount of stabilizer is mixed evenly with the formula amount of modified potassium silicate to obtain a modified potassium silicate mixture containing the stabilizer; the remaining 1 / 2 of the stabilizer is mixed evenly with the formula amount of modified silica sol to obtain a modified silica sol mixture containing the stabilizer;

[0018] Adding a formulated amount of thixotropic agent to a portion of water, mixing, and dispersing at high speed until it is completely swollen and thickened to obtain a thixotropic agent slurry with a weight fraction of 4 to 6%; mixing the remaining formulated amount of water and the formulated amount of microfibers, adjusting the speed of the dispersion disk, the linear speed of the dispersion disk is greater than 6 m / s, and the high-speed dispersion time is ≥30 minutes to obtain a first material;

[0019] Adding a formulated amount of thickener, a formulated amount of dispersant, a formulated amount of wetting agent, a formulated amount of film-forming aid, 1 / 2 of the formulated amount of defoamer and a formulated amount of antifreeze to the first material and mixing them to obtain a second material;

[0020] Adding a formulated amount of titanium dioxide, a formulated amount of calcined kaolin, a formulated amount of heavy calcium and the thixotropic additive slurry to the second material and mixing them to obtain a third material with a fineness of less than 60 um;

[0021] A formulated amount of pH regulator, a formulated amount of emulsion, a formulated amount of moisturizer, 1 / 2 formulated amount of defoamer, a formulated amount of leveling agent, a formulated amount of hydrophobic agent, a formulated amount of mildewproofing agent, the modified potassium silicate mixture containing a stabilizer and the modified silica sol mixture containing a stabilizer are added to the third material and mixed to obtain the inorganic texture art paint.

[0022] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0023] The present invention provides an inorganic texture art coating and a preparation method thereof. By using an inorganic system as the main film-forming substance, the organic content of the system is controlled, the product is allowed to continue burning for a very low total calorific value, and the fire resistance reaches A2 level; microfibrillated wood fibers are used, and the microfibers have a larger aspect ratio and specific surface area than ordinary wood fibers, and can form more hydrogen bonds with the system. The finer the microfibers, the more micro-entanglements can be formed in the system, which greatly increases the anti-cracking performance of the paint film; a non-ionic polysaccharide thickener suitable for an inorganic system is used to provide sufficient thixotropy, so that the paint film can be quickly shaped, and various texture effects can be formed. At the same time, a polyurethane leveling agent is used to allow the paint film to form a texture effect while the texture surface can be slightly leveled, and finally a thick, deep-textured, rounded texture effect is formed. In the above formula, the components work together to prepare a thick coating that is not easy to crack, the product is stable in storage, the texture effect is rich, and the fire resistance is good. The inorganic texture art coating has greatly broadened the types of art coatings and has a wide range of practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] 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.

[0026] Figure 1 This is a cross-pattern effect diagram of a smooth texture after the application of the inorganic texture art paint provided in Example 1 of the present invention.

[0027] Figure 2 This is a printing effect diagram after the inorganic texture art paint provided in Example 1 of the present invention is applied using an embossing roller.

[0028] Figure 3 This is the test result of harmful substance content of the inorganic texture art paint provided in Example 1 of the present invention.

[0029] Figure 4 The combustion performance test results of the inorganic texture art paint provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] Currently, there are many water-based paints that can produce texture effects, but they are all conventional emulsion systems, and the film-forming substances are organic polymers. In inorganic systems, there have been no reports of silicates as film-forming substances. The main difficulty is that silicates have strong film rigidity, and the paint film will shrink during the drying process. If applied slightly thickly, the paint film will crack because the shrinkage stress is greater than the cohesive force.

[0033] In addition, most of the thickeners, thixotropic agents and anti-settling agents in the emulsion system are not suitable for the silicate system. The texture effect and setting in the emulsion system are shaped by the joint action of these rheological additives, but the compatibility of these rheological additives and silicates is very poor, such as alkali-swellable thickeners, bentonite, attapulgite, most cellulose ethers, etc. In an alkaline environment, the electrostatic repulsion of the carboxyl group of the alkali-swellable thickener makes the polymer chain stretch, thereby increasing the viscosity of the system. The silicate system has high alkalinity. When the alkali-swellable thickener is added to the system, the polymer chain segments unfold instantly and have no time to disperse, so local agglomeration is very likely to occur. Inorganic thickeners such as bentonite and attapulgite are easy to bring in metal ions. In the silicate system, they will react with silicates, resulting in the system becoming thick or even gelled. The silicate system has high ionic strength. Methyl cellulose ether, ethyl cellulose ether, hydroxypropyl methylcellulose ether, hydrophobically modified cellulose ether, etc. have low solubility in the silicate system and are easy to precipitate. In the silicate system, there are very few types of rheological additives that can be used. In addition, when shaping the texture effect, there are very high requirements for the viscosity, thixotropy and leveling of the product. If the viscosity is too low, the amount of paint applied is small, and the texture effect with a strong sense cannot be achieved. If the viscosity is too high, the uniformity of the material application is poor and the overall texture effect is uneven; if the thixotropy is too high, the shear thinning is more obvious under the same viscosity, and the texture effect after construction will be "shallow and pointed". If the thixotropy is not enough, the texture effect that has just been shaped will slowly collapse due to the inability to quickly set, and the texture effect after construction will be "shallow and round"; if the leveling is too good, the shaped texture will not collapse immediately, but the paint film will slowly level during the drying process, and the texture effect after construction will be "thick and flat". If the leveling is not good, after the paint film is quickly set, the surface leveling is not enough during the drying process, and the texture effect after construction will be "thick and convex", not round enough, and the paint film will also have small wrinkles. Therefore, it is extremely difficult to ensure the stability of the system while creating a texture effect with thick paint film, deep lines and rounded surface.

[0034] To solve the above problems, the present invention provides the following technical solutions:

[0035] In a first aspect, the present invention provides an inorganic texture art paint, which comprises the following raw materials in parts by weight:

[0036] 15-28 parts of water, 2-5 parts of microfibers, 0.2-0.6 parts of thickener, 0.1-0.4 parts of thixotropic agent, 0.3-1 parts of leveling agent, 0.5-1.2 parts of stabilizer, 4-7 parts of emulsion, 5-20 parts of modified potassium silicate and 5-20 parts of modified silica sol.

[0037] The present invention provides an inorganic texture art coating and a preparation method thereof. By using an inorganic system as the main film-forming substance, the organic content of the system is controlled, the product is allowed to continue burning for a very low total calorific value, and the fire resistance reaches A2 level; microfibrillated wood fibers are used, and the microfibers have a larger aspect ratio and specific surface area than ordinary wood fibers, and can form more hydrogen bonds with the system. The finer the microfibers, the more micro-entanglements can be formed in the system, which greatly increases the anti-cracking performance of the paint film; a non-ionic polysaccharide thickener suitable for an inorganic system is used to provide sufficient thixotropy, so that the paint film can be quickly shaped, and various texture effects can be formed. At the same time, a polyurethane leveling agent is used to allow the paint film to form a texture effect while the texture surface can be slightly leveled, and finally a thick, deep-textured, rounded texture effect is formed. In the above formula, the components work together to prepare a thick coating that is not easy to crack, the product is stable in storage, the texture effect is rich, and the fire resistance is good. The inorganic texture art coating has greatly broadened the types of art coatings and has a wide range of practical application value.

[0038] In some specific embodiments, the water is preferably deionized water, and its weight proportions may be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, etc.

[0039] In some specific embodiments, the microfibers are microfibrillated wood fibers with a diameter of <50 nm and a length of 50-100 um. Specifically, they can be selected from product model EXILVA F01-V provided by Levos (Shanghai) Chemical Co., Ltd., and the weight proportions can be 2 parts, 3 parts, 4 parts, 5 parts, etc.

[0040] In some specific embodiments, the thixotropic additive is a nonionic polysaccharide thickener, and the 1% viscosity is at least one of 500-5000mPa.s. The nonionic polysaccharide thickener can provide strong pseudoplasticity. When the product is rolled on the wall, the viscosity is very low at a high shear rate, and the paint film is easier to roll evenly. When the shear force is removed, the viscosity immediately rises and the film is quickly fixed. Then, under the action of the leveling agent, the surface of the paint film is slightly leveled during the drying process, and the texture is rounded. Specifically, it can be selected from commercial products such as ESACOL ED133 and AS300, ESACOL ED122, etc. provided by Ningbadi Special Chemicals (Shanghai) Co., Ltd. The weight portion can be 0.1 part, 0.2 part, 0.3 part, 0.4 part, etc.

[0041] In some specific embodiments, the leveling agent is at least one of the polyurethane leveling agents that increase the medium and high shear viscosity. After the paint film is plasticized with a plastic brush, the shear force is removed, the viscosity immediately rises, and the film is quickly fixed. During the surface drying process, under the action of the polyurethane leveling agent, the surface of the paint film slowly levels, and the texture effect finally formed is thick, the lines are deep, and the surface is rounded. Specifically, the product models provided by Wanhua Chemical are U604, U300, etc. The weight ratio can be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, etc.

[0042] In some specific embodiments, the stabilizer is a quaternary ammonium salt stabilizer, which can be selected from commercially available products such as CROSFECT-CS1 and WJ-100 provided by Shanghai Aorun Chemical Co., Ltd. The weight parts thereof can be 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts, 1.2 parts, etc.

[0043] In some specific embodiments, the emulsion is at least one of a highly alkali-resistant styrene-acrylic emulsion, a pure acrylic emulsion, and a tert-acrylic emulsion, and can be specifically selected from commercially available products such as ROSF-5588, RS-837A, and DC-450V provided by Guangzhou Rosf New Material Technology Co., Ltd. The weight parts thereof can be 4 parts, 5 parts, 6 parts, 7 parts, etc.

[0044] In some specific embodiments, the modified potassium silicate is a stabilized potassium silicate modified by organosiloxane, with a modulus of 3-4, and can be selected from commercially available products such as WJ-777A provided by Guangdong Heye Chemical Co., Ltd. and AK20, K100 and WJ101 provided by Shanghai Aorun Chemical Co., Ltd. The weight parts can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, etc.

[0045] In some specific embodiments, the modified silica sol is a stabilized silica sol modified by organosiloxane, with a particle size of 6-12 nm, and can be selected from commercially available products such as WJ8801, WJ201A, and S308 provided by Guangdong Heye Chemical Co., Ltd. The weight proportions thereof can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, etc.

[0046] In some specific embodiments, the thickener is hydroxyethyl cellulose, which can be selected from commercially available products such as B30K, 250HBR, HS30000YP2 provided by Foshan Meiren Chemical Trading Co., Ltd. The weight proportion can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, etc.

[0047] As an implementation example of the present application, the inorganic texture art paint also includes, by weight: 0.3-0.7 parts of dispersant, 0.1-0.5 parts of wetting agent, 0.2-0.6 parts of film-forming aid, 0.4-1 parts of defoaming agent, 0.2-1.2 parts of antifreeze agent, 0.1-0.3 parts of pH adjuster, 0.1-0.5 parts of moisturizing agent, 0.1-2 parts of hydrophobic agent, 0.1-0.4 parts of mildewproof agent, 3-15 parts of titanium dioxide, 5-15 parts of calcined kaolin and 20-35 parts of heavy calcium.

[0048] On the basis of solving the above problems, for practical use needs, the present invention can also adaptively add other additives added to the existing disclosed coatings to further improve other properties of the inorganic texture art coatings such as frost resistance.

[0049] In some specific embodiments, the dispersant is polyacrylic acid sodium salt, such as polyacrylic acid homopolymer sodium salt, polyacrylic acid copolymer sodium salt, etc., which can be selected from the product model 731A provided by Dow Chemical. Polyacrylic acid copolymer sodium salt has good dispersion of pigments and seasonings, better water resistance, greatly improves the scrub resistance of the paint film, and has good compatibility with the polyurethane thickener. Its weight parts can be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, etc.

[0050] In some specific embodiments, the wetting agent includes at least one of fatty alcohol polyoxyethylene ethers and alkyl polyoxyethylene ethers, and can be selected from commercially available products such as LCN 407 and EH-9, CROSFECT 202, etc. provided by Clariant. The weight proportion can be 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, etc.

[0051] In some specific embodiments, the film-forming aid includes at least one of an alcohol ether film-forming aid and an alcohol ester film-forming aid, and can be selected from products such as COASOL 290PLUS, COASOL, TXIB, and DPNB provided by Guangzhou Fengtian Chemical Co., Ltd. The weight proportions thereof can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, etc.

[0052] In some specific embodiments, the defoamer includes at least one of a silicone defoamer, a mineral oil defoamer and a polyether modified silicone defoamer, and can be specifically selected from commercially available products such as SN DEFOAMER345, SN DEFOAMER1330 and ST 2410AG provided by Nopco. The polyether modified silicone defoamer is used in combination with the silicone defoamer. The polyether modified silicone defoamer has a certain wetting effect, the defoamer particles are small, and the breaking rate is extremely fast, which helps the product to defoam quickly. The silicone defoamer can quickly break the bubbles of thick paste coatings during the construction process. The weight ratio can be 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, etc.

[0053] In some specific embodiments, the antifreeze agent is ethylene glycol, propylene glycol, etc., and its weight proportion can be 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts, 1.2 parts, etc.

[0054] In some specific embodiments, the pH adjuster is potassium methyl silicate, AMP-95, etc., and its weight proportion can be 0.1 part, 0.2 part, 0.3 part, etc.

[0055] In some specific embodiments, the moisturizing agent is polyethylene glycol with a molecular weight of 200-500, and its weight proportion can be 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, etc.

[0056] In some specific embodiments, the hydrophobic agent includes at least one of polysiloxane and alkyl siliconate, and the weight proportions thereof may be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, etc.

[0057] In some specific embodiments, the mildew inhibitor is zinc pyrithione, and its weight proportion may be 0.1 part, 0.2 part, 0.3 part, 0.4 part, etc.

[0058] In some specific embodiments, the titanium dioxide can be a rutile titanium dioxide with Al2O3 coating on the surface prepared by the chlorination method. The titanium dioxide produced by the chlorination method has better purity and lower impurity metal content. At the same time, the surface is coated with Al2O3, which is more inert and more stable for silicate systems. The specific product models that can be selected from Longmang Billions Titanium Dioxide Group Co., Ltd. are BLR-891, BLR-886, etc. The weight parts can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0059] In some specific embodiments, the whiteness of the calcined kaolin is greater than 92, and the weight proportions thereof may be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc.

[0060] In some specific embodiments, the purity of CaCO3 in the heavy calcium carbonate is greater than 99%, the mesh size is 600-1500 mesh, and the weight portions thereof can be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, etc.

[0061] It should be noted that the component raw materials involved in the inorganic texture art paint provided by the present invention, unless otherwise specified or specified, can all be commercially available products.

[0062] In summary, the technical concept of the inorganic texture art coating provided by the present invention includes at least the following contents:

[0063] (1) Using modified potassium silicate and modified silica sol as the main film-forming substances, constructing an inorganic system, optimizing the filler and auxiliary agent system, and ensuring that the entire system has very good storage stability.

[0064] (2) The diameter of ordinary wood fibers is stripped to the nanometer level to form microfibers. Since no chemical modification has been done, they are still insoluble fibers in nature, and their physical and chemical properties are very stable. However, the extremely large specific surface area and hydroxyl density of microfibers can form strong hydrogen bonds in polar solvents such as water and alcohol that can form hydrogen bonds. The microfibers will be entangled with each other locally, and hydrogen bonds will be formed on the surface. During the drying process of the paint film, the water evaporates evenly, and the entanglement and restraint of the microfibers on the various components increase the cohesive force, greatly improving the anti-cracking performance of the thick coating of the paint film.

[0065] (3) Select non-ionic polysaccharide thickener as thixotropic additive, with hydroxyethyl cellulose of suitable viscosity and polyurethane leveling agent to improve medium and high shear viscosity. The product is easy to load, and the paint volume is large. The paint film is flattened and then the texture effect is well shaped. As the shear rate decreases, the viscosity is immediately restored, the paint film is quickly fixed, and the texture is strong. With the effect of the leveling agent, the surface of the paint film slowly levels during the drying process, and the texture surface becomes rounded. After complete drying, the paint film presents a thick, deep-grained, and rounded texture effect.

[0066] In some specific embodiments, the construction method of the inorganic texture art coating provided by the embodiment of the present invention includes the following process:

[0067] (1) using a long-haired roller to evenly roll the inorganic texture art paint onto the wall surface, and apply the paint as evenly as possible;

[0068] (2) Immediately use a wool brush to smooth the material just rolled from top to bottom to remove the rolling marks;

[0069] (3) Use a plastic brush to draw vertical lines from top to bottom and wait for them to dry;

[0070] (4) After the paint film is completely dry, add the material according to step (1), and then use a wool brush to smooth the material just rolled from left to right to remove the rolling marks;

[0071] (5) Use a plastic brush to draw vertical lines from left to right. After drying, you will get a cloth-textured effect.

[0072] In a second aspect, the present invention provides a method for preparing the inorganic texture art coating according to any one of the first aspects, the preparation method comprising the following steps:

[0073] 1 / 2 of the formula amount of stabilizer is mixed evenly with the formula amount of modified potassium silicate to obtain a modified potassium silicate mixture containing the stabilizer; the remaining 1 / 2 of the stabilizer is mixed evenly with the formula amount of modified silica sol to obtain a modified silica sol mixture containing the stabilizer;

[0074] Adding a formulated amount of thixotropic agent to a portion of water, mixing, and dispersing at high speed until it is completely swollen and thickened to obtain a thixotropic agent slurry with a weight fraction of 4 to 6%; mixing the remaining formulated amount of water and the formulated amount of microfibers, adjusting the speed of the dispersion disk, the linear speed of the dispersion disk is greater than 6 m / s, and the high-speed dispersion time is ≥30 minutes to obtain a first material;

[0075] Adding a formulated amount of thickener, a formulated amount of dispersant, a formulated amount of wetting agent, a formulated amount of film-forming aid, 1 / 2 of the formulated amount of defoamer and a formulated amount of antifreeze to the first material and mixing them to obtain a second material;

[0076] Adding a formulated amount of titanium dioxide, a formulated amount of calcined kaolin, a formulated amount of heavy calcium and the thixotropic additive slurry to the second material and mixing them to obtain a third material with a fineness of less than 60 um;

[0077] A formulated amount of pH regulator, a formulated amount of emulsion, a formulated amount of moisturizer, 1 / 2 formulated amount of defoamer, a formulated amount of leveling agent, a formulated amount of hydrophobic agent, a formulated amount of mildewproofing agent, the modified potassium silicate mixture containing a stabilizer and the modified silica sol mixture containing a stabilizer are added to the third material and mixed to obtain the inorganic texture art paint.

[0078] It should be noted that in the preparation method of the inorganic texture art paint provided by the present invention, unless otherwise specified or specifically described, the operating steps and process parameters can be carried out according to the existing paint preparation process, and the present invention will not elaborate on them one by one.

[0079] 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.

[0080] The raw material product information involved in the following examples and comparative examples is as follows:

[0081] Microfiber: Levaux (Shanghai) Chemical Co., Ltd., product model is EXILVA F01-V.

[0082] Thickener: Hydroxyethyl cellulose, Foshan Meiren Chemical Trading Co., Ltd., product model B30K.

[0083] Dispersant: Polyacrylic acid copolymer sodium salt, Dow Chemical, product model 731A.

[0084] Wetting agent: Clariant, product model LCN407.

[0085] Film-forming aid: Guangzhou Fengtian Chemical Co., Ltd., product model is COASOL.

[0086] Defoaming agent: Nopco, product model: SN DEFOAMER1330.

[0087] Antifreeze: Propylene glycol, Foshan Hongchuan New Materials Co., Ltd.

[0088] Titanium dioxide: Lomon Billions Titanium Dioxide Group Co., Ltd., product model is BLR-886.

[0089] Calcined kaolin: Tangshan Madison Kaolin Co., Ltd., 4000 mesh calcined kaolin.

[0090] Heavy calcium: Hezhou Henryda Industrial Investment Co., Ltd., 1000 mesh heavy calcium.

[0091] Thixotropic additive: Lamberti Specialty Chemicals (Shanghai) Co., Ltd., product model ESACOL ED133.

[0092] Stabilizer: Shanghai Aorun Chemical Co., Ltd., product model is CROSFECT-CS1.

[0093] pH adjuster: Wacker, product model SILRES BS168.

[0094] Emulsion: Guangzhou Rosf New Material Technology Co., Ltd., product model ROSF-5588.

[0095] Moisturizer: Clariant, product model G300.

[0096] Modified potassium silicate: Aorun Chemical, product model is K100.

[0097] Modified silica sol: Guangdong Heye Chemical Co., Ltd., product model is WJ8801.

[0098] Leveling agent: Wanhua Chemical, product model is U604.

[0099] Hydrophobic agent: Wacker, product model BS1306CN.

[0100] Antifungal agent: Xiamen Zhengxingxing Trading Co., Ltd., product model is Zinc Omadine_ZOE-2X.

[0101] Examples 1 to 5 and Comparative Examples 1 to 5 provide an inorganic texture art coating, and the specific weight percentages of the components thereof are shown in Table 1.

[0102] Table 1

[0103]

[0104]

[0105] The preparation method of the inorganic texture art paint comprises the following steps:

[0106] 1 / 2 of the formula amount of stabilizer is mixed evenly with the formula amount of modified potassium silicate to obtain a modified potassium silicate mixture containing the stabilizer; the remaining 1 / 2 of the stabilizer is mixed evenly with the formula amount of modified silica sol to obtain a modified silica sol mixture containing the stabilizer;

[0107] Adding a formulated amount of thixotropic additive to a portion of water, mixing, and dispersing at high speed until completely swollen and thickened to obtain a thixotropic additive slurry with a weight fraction of 5%; adding the remaining formulated amount of water and the formulated amount of microfibers to the reactor, adjusting the speed of the dispersion disk to 6.5 m / s, and the high-speed dispersion time to 30 minutes, allowing the microfibers to be completely dispersed to obtain the first material;

[0108] Add a formulated amount of thickener, a formulated amount of dispersant, a formulated amount of wetting agent, a formulated amount of film-forming aid, 1 / 2 of the formulated amount of defoamer and a formulated amount of antifreeze to the first material, add the mixture to a reactor, and stir at a medium speed for 13 minutes to obtain a second material;

[0109] Adding a formulated amount of titanium dioxide, a formulated amount of calcined kaolin, a formulated amount of heavy calcium and the thixotropic additive slurry to the second material and mixing them to obtain a third material with a fineness of less than 60 um;

[0110] Add a formulated amount of pH regulator, a formulated amount of emulsion, a formulated amount of moisturizer, 1 / 2 formulated amount of defoamer, a formulated amount of leveling agent, a formulated amount of hydrophobic agent, a formulated amount of mildew preventer, the modified potassium silicate mixture containing a stabilizer and the modified silica sol mixture containing a stabilizer to the third material, mix them, and stir at medium speed for 18 minutes to obtain the inorganic texture art paint.

[0111] Test Case

[0112] In this example, the performance of the inorganic texture art coatings provided in Examples 1 to 5 and Comparative Examples 1 to 3 was tested, and the test results are shown in Table 2.

[0113] Table 2 Performance test results

[0114]

[0115]

[0116] In addition, the product effect diagram after the construction of the inorganic texture art coating provided in Example 1 is as follows Figure 1 and Figure 2 The test results of harmful substance content of inorganic texture art coating provided in Example 1 are shown as follows: Figure 3 As shown, it is safe and environmentally friendly, and all test items meet the standards. The combustion performance test results of the inorganic texture art paint provided in Example 1 are as follows: Figure 4 As shown, it has excellent fire resistance and reaches A2 level.

[0117] In summary, the present invention provides an inorganic texture art paint and a preparation method thereof, specifically an inorganic texture art paint that is not easy to crack when thickly applied, has stable product storage, and has rich texture effects, and has the following characteristics: 1. Class A fire protection, very suitable for use in public areas; 2. Strong texture, no cracking when thickly applied, can be used with tools to make many texture effects, and has strong decorative effect; 3. High environmental performance, high hardness, good breathability, good adhesion to the substrate, no bulging or delamination, and long service life; 4. The product has very high storage stability, and basically no post-thickening.

[0118] 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.

[0119] In the present invention, in the absence of contrary instructions, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the description of the specification of the present invention, the terms "including", "comprising", etc. refer to "including but not limited to". In this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In this article, "and / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In this article, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can both mean: a, b, c, a~b (i.e. a and b), a~c, b~c, or a~b~c, where a, b, c can be single or plural, respectively.

[0120] 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. An inorganic texture art paint, characterized in that: The inorganic texture art paint comprises the following raw materials in parts by weight: 15-28 parts of water, 2-5 parts of microfibers, 0.2-0.6 parts of thickener, 0.1-0.4 parts of thixotropic additive, 0.3-1 parts of leveling agent, 0.5-1.2 parts of stabilizer, 4-7 parts of emulsion, 5-20 parts of modified potassium silicate and 5-20 parts of modified silica sol; The thixotropic additive is a nonionic polysaccharide thickener, the nonionic polysaccharide thickener is ESACOL ED133 or ESACOL ED122, the thickener is hydroxyethyl cellulose, and the leveling agent is a polyurethane leveling agent.

2. The inorganic texture art paint according to claim 1, characterized in that: In parts by weight, the inorganic texture art paint also includes: 0.3-0.7 parts of dispersant, 0.1-0.5 parts of wetting agent, 0.2-0.6 parts of film-forming aid, 0.4-1 parts of defoaming agent, 0.2-1.2 parts of antifreeze agent, 0.1-0.3 parts of pH adjuster, 0.1-0.5 parts of moisturizing agent, 0.1-2 parts of hydrophobic agent, 0.1-0.4 parts of mildewproof agent, 3-15 parts of titanium dioxide, 5-15 parts of calcined kaolin and 20-35 parts of heavy calcium.

3. The inorganic texture art paint according to claim 1 or 2, characterized in that: The microfibrils are microfibrillated wood fibers with a diameter of less than 50 nm and a length of 50-100 um.

4. The inorganic texture art paint according to claim 1 or 2, characterized in that: The modified potassium silicate is stabilized potassium silicate modified by organosiloxane, and the modulus is 3-4; the modified silica sol is stabilized silica sol modified by organosiloxane, and the particle size is 6-12nm.

5. The inorganic texture art paint according to claim 1 or 2, characterized in that: The stabilizer is a quaternary ammonium salt stabilizer, and the emulsion includes at least one of styrene-acrylic emulsion, pure acrylic emulsion and tert-acrylic emulsion.

6. The inorganic texture art paint according to claim 2, characterized in that: The hydrophobic agent comprises at least one of polysiloxane and alkyl silicon alkoxide, and the moisturizing agent is polyethylene glycol with a molecular weight of 200-500.

7. The inorganic texture art paint according to claim 2, characterized in that: The dispersant is polyacrylic acid sodium salt, and the defoamer includes at least one of an organosilicon defoamer, a mineral oil defoamer and a polyether-modified organosilicon defoamer.

8. The inorganic texture art paint according to claim 2, characterized in that: The titanium dioxide is rutile titanium dioxide coated with Al2O3 on the surface and prepared by chlorination method. The calcined kaolin has a whiteness greater than 92. The purity of CaCO3 in the heavy calcium carbonate is greater than 99%, and the mesh size is 600-1500 meshes.

9. A method for preparing the inorganic texture art coating according to any one of claims 2 to 8, characterized in that: The preparation method comprises the following steps: 1 / 2 of the formula amount of stabilizer is mixed evenly with the formula amount of modified potassium silicate to obtain a modified potassium silicate mixture containing the stabilizer; the remaining 1 / 2 of the stabilizer is mixed evenly with the formula amount of modified silica sol to obtain a modified silica sol mixture containing the stabilizer; Adding a formulated amount of thixotropic additive to a portion of water, mixing, and dispersing at high speed until it is completely swollen and thickened to obtain a thixotropic additive slurry with a weight fraction of 4-6%; mixing the remaining formulated amount of water and the formulated amount of microfibers, adjusting the speed of the dispersion disk, the linear speed of the dispersion disk is greater than 6 m / s, and the high-speed dispersion time is ≥30 minutes to obtain a first material; Adding a formulated amount of thickener, a formulated amount of dispersant, a formulated amount of wetting agent, a formulated amount of film-forming aid, 1 / 2 of the formulated amount of defoamer and a formulated amount of antifreeze to the first material and mixing them to obtain a second material; Adding a formulated amount of titanium dioxide, a formulated amount of calcined kaolin, a formulated amount of heavy calcium and the thixotropic additive slurry to the second material and mixing them to obtain a third material with a fineness of less than 60 um; A formulated amount of pH regulator, a formulated amount of emulsion, a formulated amount of moisturizer, 1 / 2 formulated amount of defoamer, a formulated amount of leveling agent, a formulated amount of hydrophobic agent, a formulated amount of mildewproofing agent, the modified potassium silicate mixture containing a stabilizer and the modified silica sol mixture containing a stabilizer are added to the third material and mixed to obtain the inorganic texture art paint.

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