A colorful simulated stone paint and its preparation method and application

Abstract

The present invention provides a colorful simulated stone paint, its preparation method, and application. The colorful simulated stone paint comprises a base material and a granulation emulsion; wherein the base material comprises the following components by weight: 0.25-0.35 parts of hydroxypropyl methylcellulose, 0.25-0.35 parts of hydrophobic hydroxyethyl cellulose, 18-23 parts of acrylic emulsion, 0.3-0.4 parts of protective glue, 0.5-10 parts of filler, 50-60 parts of snowflake white sand, and 15-25 parts of solvent; wherein the granulation emulsion comprises the following components by weight: 1-2 parts of nanocellulose, 80-85 parts of acrylic emulsion, 4-6 parts of lithium magnesium silicate, and 4-12 parts of solvent. The colorful simulated stone paint prepared by the present invention has color points that can reach uniform particles of about 0.2 mm, and the color points are clear, without leaking white sand or bleeding; the board surface effect has a strong sense of convexity and concavity, a distinct sand feeling, a high coating rate, and a realistic simulated stone paint effect.

Description

Technical Field

[0001] The present invention relates to the technical field of architectural coatings, in particular to a multi-colored simulated stone paint, a preparation method thereof and an application thereof. Background Art

[0002] Colorful simulated stone paint is primarily used to mimic the effect of stone, hence the name "liquid stone." This water-based, multi-colored exterior wall paint utilizes acrylic silicone resin emulsion and fluorocarbon resin emulsion as its base, combined with high-quality inorganic pigments and high-performance additives. This innovative process, combined with breakthroughs in coating chemistry, creates a unique, multi-colored textured appearance resembling natural stone on building walls, achieving a high-end artistic effect while eliminating the dangers of natural stone peeling. This water-based, multi-colored, simulated stone paint is an excellent alternative to natural decorative stone and is well-suited to various exterior wall insulation systems, representing a new generation of low-carbon, energy-saving, and environmentally friendly building materials.

[0003] After nearly a decade of development, natural stone paint still holds over 80% of the architectural coating market. Natural stone paint requires more stable natural or calcined colored sand. However, due to unstable mineral resources, the batch stability of natural colored sand in the market is becoming increasingly poor. Furthermore, the multi-color products currently on the market cannot produce uniform 0.2mm particles, resulting in paste formation, uneven particles, and color bleeding. Furthermore, there is a lack of multi-color products that can produce 0.2mm colored particles to imitate natural stone paint products.

[0004] CN113429849A discloses a base paint for a hemp-colored stone-imitation paint, a preparation method, and a hemp-colored stone-imitation paint. The base paint has an increased emulsion content and a cellulose blend of hydrophobically modified ethyl hydroxyethyl cellulose and high-molecular-weight hydroxyethyl cellulose. This significantly improves the toughness of the base paint, resulting in a continuous, dense paint film with a smooth surface and excellent stain resistance. While the paint film has the stone-imitation effect of a true stone paint and a smooth paint film surface with excellent stain resistance, the prepared paint film surface is smooth, but the unevenness effect is insufficient, significantly different from the sandy feel of true stone paint. Furthermore, the color dot ratio is only 50%, resulting in a low coating rate.

[0005] CN109796824A discloses simulated stone paint color particles, simulated stone paint, and their preparation and use. The simulated stone paint color particles comprise 68.0-74.0% simulated stone paint color phase paint, 23.8-30.2% glue, and 1.8-2.2% crosslinking agent. The simulated stone paint can produce realistic textures and appearance with a single spray application. The color dots are not easily broken during spraying, allowing for easy spreading. This saves on usage while also offering excellent weather and water resistance. Various natural marble effects can be produced, and the storage stability, weather resistance, and water resistance fully meet national standards. The simulated stone paint color particles have a particle size of 3-6 mm. However, the particle size of the color dots is too large, failing to achieve a uniform particle size of 0.2 mm.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] One of the purposes of the present invention is to provide a multi-colored simulated stone paint, comprising a base material, a base material colorant, and a granulation emulsion; the base material comprises hydroxypropyl methylcellulose, hydrophobic hydroxyethyl cellulose, an acrylic emulsion, a protective adhesive, a filler, snowflake white sand, and a solvent; and the granulation emulsion comprises nanocellulose, an acrylic emulsion, lithium magnesium silicate, and a solvent. The multi-colored simulated stone paint can produce uniform particles of 0.1-0.3 mm, with clear color dots, no white sand leakage, and no color bleeding. The sprayed surface has a strong sense of relief and a distinct sandy feel, a high coating rate, and a realistic simulated stone paint effect. The surface effect is close to that of real stone paint, and the stone-like effect is even better than that of real stone paint.

[0008] The second object of the present invention is to provide a preparation method of the colorful simulated stone paint, which comprises the following steps: mixing the components in the base material to obtain the base material; mixing the components in the granulation emulsion to obtain the granulation emulsion; mixing the base material and the base material colorant to obtain a colored base material; mixing the colored base material and the granulation emulsion to obtain the colorful simulated stone paint.

[0009] A third object of the present invention is to provide an application of the colorful simulated stone paint in the preparation of architectural coatings.

[0010] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0011] In a first aspect, the present invention provides a multi-colored simulated stone paint, the multi-colored simulated stone paint comprising a base material and a granulation emulsion;

[0012] The base material comprises the following components by weight: 0.25-0.35 parts of hydroxypropyl methylcellulose, 0.25-0.35 parts of hydrophobic hydroxyethyl cellulose, 18-23 parts of acrylic emulsion, 0.3-0.4 parts of protective glue, 0.5-10 parts of filler, 50-60 parts of snowflake white sand, and 15-25 parts of solvent;

[0013] The granulation emulsion comprises the following components by weight: 1-2 parts of nanocellulose, 80-85 parts of acrylic emulsion, 4-6 parts of lithium magnesium silicate, and 4-12 parts of solvent.

[0014] In the present invention, the methyl groups of hydroxypropyl methylcellulose and the hydrophobic groups of hydrophobic hydroxyethyl cellulose are associated and connected with the latex particles of the acrylic emulsion in the base paint, thereby improving the cohesive force of the base material; at the same time, the high-strength gel formed by the adsorption aggregation of the layered structure of lithium magnesium silicate through the hydroxypropyl group and the hydroxyl group is cross-linked to form a three-dimensional network, which perfectly wraps the white sand and can improve the granularity of the base paint when preparing the colored dot particles, approaching the effect of natural colored sand.

[0015] In the present invention, a colored base is obtained by coloring the base toner. The colored base is in a mixed emulsion containing lithium magnesium silicate and nanocellulose. The crystal cells of the lithium magnesium silicate are adsorbed and cross-linked on the exposed cellulose hydroxyl and hydroxypropyl groups on the surface of the color particles to further wrap and shape the color dot particles, and penetrate into the interior of the color dots to continue cross-linking the cellulose, so that the color dot particles have the granular feel of natural colored sand. At the same time, the steric hindrance effect of the hydroxypropyl group and the excellent barrier and suspension wrapping properties of the nanocellulose can prevent the color dot particles from bleeding, and the color dot particles are stably suspended in the system.

[0016] In the base material, the content of hydroxypropyl methylcellulose is 0.25-0.35 parts, for example, it can be 0.25 parts, 0.26 parts, 0.28 parts, 0.3 parts, 0.32 parts, 0.35 parts, etc.

[0017] In the base material, the content of hydrophobic hydroxyethyl cellulose is 0.25-0.35 parts, for example, it can be 0.25 parts, 0.26 parts, 0.28 parts, 0.3 parts, 0.32 parts, 0.35 parts, etc.

[0018] In the present invention, hydroxypropyl methylcellulose and hydrophobic hydroxyethyl cellulose need to be controlled within the above-mentioned ratio range, which can further improve the uniformity of the colored particles, so that the color after being applied to the building surface and drying is clearer and the concave and convex texture is stronger; if the content of hydroxypropyl methylcellulose and / or hydrophobic hydroxyethyl cellulose is too little, the color spots of the prepared water-based sand paint will be soft and uneven, the concave and convex texture will be weak and flat, and the effect will be poor compared with the real stone paint; if the content of hydroxypropyl methylcellulose and / or hydrophobic hydroxyethyl cellulose is too much, the prepared water-based sand paint will have too much debris and uneven color spots.

[0019] In the base material, the content of acrylic emulsion is 18-23 parts, for example, it can be 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, etc.

[0020] In the base material, the content of the protective glue is 0.3-0.4 parts, for example, it can be 0.3 parts, 0.32 parts, 0.34 parts, 0.36 parts, 0.38 parts, 0.4 parts, etc.

[0021] In the base material, the content of the filler is 0.5-10 parts, for example, it can be 0.5 parts, 1 parts, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, etc.

[0022] In the base material, the content of snowflake white sand is 50-60 parts, for example, it can be 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, etc.

[0023] In the base material, the content of the solvent is 15-25 parts, for example, it can be 15 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 25 parts, etc.

[0024] In the granulation emulsion, the content of nanocellulose is 1-2 parts, for example, it can be 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, etc.

[0025] In the granulation emulsion, the content of the acrylic emulsion is 80-85 parts, for example, 80 parts, 81 parts, 82 parts, 83 parts, 84 parts, 85 parts, etc.

[0026] In the granulation emulsion, the content of lithium magnesium silicate is 4-6 parts, for example, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, etc.

[0027] In the granulation emulsion, the content of the solvent is 4-12 parts, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.

[0028] Preferably, the mass ratio of the base material to the granulation emulsion is (7.5-8):(2.5-3);

[0029] Here, “7.5-8” can be, for example, 7.5, 7.6, 7.7, 7.8, 7.9, 8, etc.;

[0030] Among them, "2.5-3" can be, for example, 2.5, 2.6, 2.7, 2.8, 2.9, 3, etc.

[0031] Preferably, the colorful simulated stone paint also includes a base colorant.

[0032] Preferably, the mass ratio of the base material to the base material toner is (98-100):(0-2);

[0033] Among them, "98-100" can be, for example, 98, 98.5, 99, 99.5, 100, etc.;

[0034] Here, “0-2” can be, for example, 0, 0.0005, 0.001, 0.01, 0.1, 0.2, 0.5, 1, 1.2, 1.5, 1.8, 2, etc.

[0035] Preferably, the acrylic emulsion in the base material is pure acrylic emulsion.

[0036] Preferably, the viscosity of the pure acrylic emulsion is 1000-6000 mPa·s, for example, it can be 1000 mPa·s, 1500 mPa·s, 2000 mPa·s, 2500 mPa·s, 3000 mPa·s, 3500 mPa·s, 4000 mPa·s, 5000 mPa·s, 6000 mPa·s, etc.

[0037] Preferably, the solid content of the pure acrylic acid emulsion is 45-48%, for example, it can be 45%, 45.5%, 46%, 46.5%, 47%, 47.5%, 48%, etc.

[0038] Preferably, the protective colloid is a lithium magnesium silicate solution.

[0039] Preferably, the content of lithium magnesium silicate in the lithium magnesium silicate solution is 5-15 wt%, for example, 5 wt%, 6 wt%, 8 wt%, 10 wt%, 12 wt%, 15 wt%, etc.

[0040] Preferably, the filler comprises rutile titanium dioxide and calcined kaolin.

[0041] Preferably, the mass ratio of the rutile titanium dioxide to the calcined kaolin is (0.5-1):(4-6);

[0042] Here, “0.5-1” can be, for example, 0.5, 0.6, 0.7, 0.8, 0.9, 1, etc.;

[0043] Here, “4-6” can be, for example, 4, 4.5, 5, 5.5, 6, etc.

[0044] Preferably, the solvent in the base material is water.

[0045] Preferably, the base colorant is a color paste, and the solid content of the color paste is 45-75%, for example, it can be 45%, 50%, 55%, 60%, 65%, 70%, 75%, etc.

[0046] Preferably, the nanocellulose in the granulation emulsion is microfibrillated cellulose.

[0047] Preferably, the fiber diameter of the microfibrillated cellulose is 5 nm-1 μm, for example, it can be 5 nm, 10 nm, 20 nm, 50 nm, 70 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, etc., and the length of the microfibrillated cellulose is 100 nm-100 μm, for example, it can be 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 5 μm, 10 μm, 20 μm, 40 μm, 60 μm, 80 μm, 100 μm, etc.

[0048] Preferably, the acrylic emulsion in the granulation emulsion is a silicone acrylic emulsion.

[0049] Preferably, the viscosity of the silicone-acrylic emulsion is 500-3000 mPa·s, for example, it can be 500 mPa·s, 1000 mPa·s, 1500 mPa·s, 2000 mPa·s, 2500 mPa·s, 3000 mPa·s, etc.

[0050] Preferably, the solid content of the silicone acrylic emulsion is 46-48%, for example, it can be 46%, 46.5%, 47%, 47.5%, 48%, etc.

[0051] Preferably, the solvent in the granulation emulsion is water.

[0052] Preferably, the base material further comprises any one or a combination of at least two of a bactericide, a defoaming agent, a dispersant, a film-forming aid, an antifreeze agent or a pH regulator.

[0053] Preferably, the base material further comprises the following components by weight: 0-0.4 parts of an optional bactericide, 0-0.4 parts of an optional defoaming agent, 0-0.4 parts of an optional dispersant, 0-1.2 parts of an optional film-forming aid, 0-1 parts of an optional antifreeze agent, and 0-0.2 parts of an optional pH regulator.

[0054] In the base material, the content of the fungicide is 0-0.4 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, etc.

[0055] In the base material, the content of the defoaming agent is 0-0.4 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, etc.

[0056] In the base material, the content of the dispersant is 0-0.4 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, etc.

[0057] In the base material, the content of the film-forming aid is 0-1.2 parts, for example, it can be 0 part, 0.01 part, 0.05 part, 0.1 part, 0.2 part, 0.4 part, 0.6 part, 0.8 part, 1 part, 1.2 parts, etc.

[0058] In the base material, the content of the antifreeze agent is 0-1 part, for example, it can be 0 part, 0.01 part, 0.05 part, 0.1 part, 0.2 part, 0.4 part, 0.6 part, 0.8 part, 1 part, etc.

[0059] In the base material, the content of the pH regulator is 0-0.2 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, etc.

[0060] Preferably, the granulation emulsion further comprises any one or a combination of at least two of a bactericide, a defoaming agent, a film-forming aid, an antifreeze agent or a pH regulator.

[0061] Preferably, the granulation emulsion further comprises the following components by weight: 0-0.4 parts of an optional bactericide, 0-0.4 parts of an optional defoaming agent, 0-5 parts of an optional film-forming aid, and 0-3 parts of an optional antifreeze agent.

[0062] In the granulation emulsion, the content of the fungicide is 0-0.4 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, etc.

[0063] In the granulation emulsion, the content of the defoaming agent is 0-0.4 parts, for example, it can be 0 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, etc.

[0064] In the granulation emulsion, the content of the film-forming aid is 0-5 parts, for example, it can be 0 part, 0.01 part, 0.05 part, 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, etc.

[0065] In the granulation emulsion, the content of the antifreeze agent is 0-3 parts, for example, it can be 0 part, 0.01 part, 0.05 part, 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, etc.

[0066] Preferably, the colorful simulated stone paint further comprises an optional thickener.

[0067] Preferably, the addition amount of the thickener is 0-0.5% of the total mass of the base material and the granulation emulsion, for example, it can be 0%, 0.001%, 0.005%, 0.01%, 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, etc.

[0068] Preferably, the fungicide is an isothiazolinone fungicide, preferably a combination of 2-methyl-4-isothiazolin-3-one (MIT) and 1,2-benzisothiazolin-3-one.

[0069] Preferably, the defoaming agent is a polymer composite mineral oil defoaming agent.

[0070] Preferably, the dispersant is a polycarboxylate ammonium salt dispersant.

[0071] Preferably, the film-forming aid is 12-ester alcohol.

[0072] Preferably, the antifreeze agent is propylene glycol.

[0073] Preferably, the pH adjuster is 2-amino-2-methyl-1-propanol.

[0074] Preferably, the thickener is an acrylic alkali swelling thickener.

[0075] Preferably, the particle size of the color dot particles in the colorful simulated stone paint is 0.1-0.3 mm, for example, it can be 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.3 mm, etc.

[0076] Preferably, the coating rate of the colorful simulated stone paint is close to 0.6-0.8 kg / m2, for example, it can be 0.6 kg / m2, 0.65 kg / m2, 0.7 kg / m2, 0.75 kg / m2, 0.8 kg / m2, etc.

[0077] In a second aspect, the present invention provides a method for preparing the colorful simulated stone paint as described in the first aspect, the preparation method comprising the following steps:

[0078] Taking the components of the base material and mixing them to obtain the base material; taking the components of the granulation emulsion and mixing them to obtain the granulation emulsion;

[0079] Mixing the base material and the base material toner to perform toning to obtain a colored base material;

[0080] The colored base material and the granulation emulsion are mixed to obtain the colorful simulated stone paint.

[0081] Preferably, after the colored base material and the granulation emulsion are mixed, the viscosity needs to be adjusted by adding a thickener.

[0082] Preferably, the viscosity of the colorful simulated stone paint needs to be adjusted to 92-100 ku, for example, it can be 92 ku, 94 ku, 96 ku, 98 ku, 100 ku, etc.

[0083] In a third aspect, the present invention provides a use of the colorful simulated stone paint as described in the first aspect in preparing architectural coatings.

[0084] Compared with the prior art, the present invention has the following beneficial effects:

[0085] (1) The colorful simulated stone paint prepared by the present invention has color points that can reach uniform particles of about 0.2 mm, and the color points are clear, without leaking white sand or bleeding;

[0086] (2) The colorful simulated stone paint prepared by the present invention has a strong concave-convex effect on the sprayed board surface, a distinct sandy feel, a high coating rate, and a realistic simulated stone paint effect;

[0087] (3) The colorful simulated stone paint board surface effect prepared by the present invention is close to that of real stone paint, and the imitation stone effect is better than that of real stone paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0089] Figure 1 This is a schematic diagram of the structure in which the methyl group of hydroxypropyl methylcellulose and the hydrophobic group of hydrophobic hydroxyethyl cellulose are associated with the latex particles of the acrylic emulsion in the base material.

[0090] Figure 2 Schematic diagram of the structure of the reaction of the colored base in a mixed emulsion containing lithium magnesium silicate and nanocellulose.

[0091] Figure 3 This is a schematic diagram comparing the effects of colorful simulated stone paint panels prepared using colorants of different colors.

[0092] Figure 4 This is a rendering of the board surface sprayed with the colorful simulated stone paint provided in Example 1.

[0093] Figure 5 This is a rendering of the board surface sprayed with the colorful simulated stone paint provided in Example 2.

[0094] Figure 6 This is a rendering of the board surface sprayed with the colorful simulated stone paint provided in Example 3.

[0095] Figure 7 This is the effect picture of the board surface sprayed with the colorful simulated stone paint provided in Comparative Example 1.

[0096] Figure 8 This is the effect picture of the board surface sprayed with colorful simulated stone paint provided in Comparative Example 2.

[0097] Figure 9 This is the effect picture of the board surface sprayed with colorful simulated stone paint provided in Comparative Example 2. DETAILED DESCRIPTION

[0098] Unless otherwise defined herein, scientific and technical terms used in conjunction with the present invention shall have the meanings commonly understood by those of ordinary skill in the art. The meaning and scope of the terms should be clear; however, in the event of any potential ambiguity, the definitions provided herein take precedence over any dictionary or external definitions. In this application, the use of "or" means "and / or" unless otherwise stated. In addition, the use of the term "including" and other forms is non-limiting.

[0099] It should be noted that the following description sets forth specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0100] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0101] The present invention is further described below by way of examples. Unless otherwise specified, the materials in the examples were prepared according to existing methods or directly purchased from the market.

[0102] Figure 1 The figure is a schematic diagram of the structure in which the methyl group of hydroxypropyl methylcellulose and the hydrophobic group of hydrophobic hydroxyethyl cellulose are associated with the latex particles of the acrylic emulsion in the base material. Figure 1 As shown, the present invention associates and connects the methyl groups of hydroxypropyl methylcellulose and the hydrophobic groups of hydrophobic hydroxyethyl cellulose with the latex particles of the acrylic emulsion in the base paint, thereby improving the cohesive force of the base material; at the same time, the high-strength gel formed by adsorption and aggregation of the layered structure of lithium magnesium silicate by the hydroxypropyl group and the hydroxyl group is cross-linked to form a three-dimensional network, which perfectly wraps the white sand and can improve the granularity of the base paint when preparing 0.2mm colored dot particles, approaching the effect of natural colored sand;

[0103] Figure 2 The schematic diagram of the reaction structure of the colored base in the mixed emulsion containing lithium magnesium silicate and nanocellulose. Figure 2 As shown, the colored base material is in a mixed emulsion containing lithium magnesium silicate and nanocellulose. The crystal cells of lithium magnesium silicate are adsorbed and cross-linked on the exposed cellulose hydroxyl and hydroxypropyl groups on the surface of the colored particles to further wrap and shape the colored particles, and penetrate into the interior of the colored particles to continue cross-linking the cellulose, so that the colored particles have the granular feel of natural colored sand. At the same time, the steric hindrance effect of the hydroxypropyl group and the excellent barrier and suspension wrapping properties of nanocellulose can prevent the colored particles from bleeding, and the colored particles are stably suspended in the system.

[0104] Figure 3 The following is a schematic diagram comparing the effects of colorful simulated stone paint panels prepared using different color toners. Figure 3 As shown, the simulated stone paint coatings of different colors prepared by the present invention have color points that can reach uniform particles of about 0.2 mm, and at the same time, the color points are clear, there is no leakage of white sand, and no color bleeding; the board surface effect has a strong concave and convex feel, an obvious sand feel, a high coating rate, and the imitation stone effect is better than that of real stone paint.

[0105] The sources of some of the raw materials in the following examples and comparative examples are as follows:

[0106]

[0107] Examples 1-3

[0108] Examples 1-3 provide three different proportions of colorful simulated stone paints, each of which comprises the following components in parts by weight:

[0109]

[0110]

[0111] The colorful simulated stone paint is prepared by the following method:

[0112] (1) taking the components of the base material according to the formula of each embodiment above and mixing them to obtain the base material; taking the components of the granulation emulsion and mixing them to obtain the granulation emulsion;

[0113] (2) mixing the base material and the base material toner to perform coloring to obtain a colored base material;

[0114] (3) Mixing the colored base material and the granulation emulsion to obtain the colorful simulated stone paint.

[0115] Example 4

[0116] This embodiment provides a colorful simulated stone paint, which differs from Example 1 in that the acrylic emulsion in the base material is a silicone acrylic emulsion; the acrylic emulsion in the granulating emulsion is a pure acrylic emulsion, and the other raw material compositions and preparation steps are exactly the same as those in Example 1.

[0117] Example 5

[0118] This embodiment provides a colorful simulated stone paint, which differs from Example 1 in that the acrylic emulsion in the granulation emulsion is a pure acrylic emulsion, and the other raw material compositions and preparation steps are exactly the same as those in Example 1.

[0119] Example 6

[0120] This embodiment provides a colorful simulated stone paint, which differs from Example 1 in that the acrylic emulsion in the base material is a silicone acrylic emulsion, and the other raw material compositions and preparation steps are exactly the same as those in Example 1.

[0121] Example 7

[0122] This embodiment provides a colorful simulated stone paint, which differs from Example 1 in that the rutile titanium dioxide is replaced with anatase titanium dioxide of equal mass, and the other raw material compositions and preparation steps are exactly the same as those in Example 1.

[0123] Example 8

[0124] This embodiment provides a colorful simulated stone paint, which differs from Example 1 in that the calcined kaolin is replaced with kaolin of equal mass, and the other raw material compositions and preparation steps are exactly the same as those in Example 1.

[0125] Comparative Examples 1-7

[0126] Comparative Examples 1-7 provide seven different proportions of colorful simulated stone paint coatings, each of which comprises the following components in parts by weight:

[0127]

[0128]

[0129] The colorful simulated stone paint is prepared by the following method:

[0130] (1) taking the components of the base material according to the formula of each embodiment above and mixing them to obtain the base material; taking the components of the granulation emulsion and mixing them to obtain the granulation emulsion;

[0131] (2) mixing the base material and the base material toner to perform coloring to obtain a colored base material;

[0132] (3) Mixing the colored base material and the granulation emulsion to obtain the colorful simulated stone paint.

[0133] Test Example 1

[0134] Test samples: the colorful simulated stone paint provided in Examples 1-8 and the colorful simulated stone paint provided in Comparative Examples 1-8;

[0135] Test method: According to the relevant standards of HG / T 4343-2012 "Water-based Multi-color Architectural Coatings", the reflective insulating water-coated sand coatings prepared in Examples 1-3 and Comparative Examples 1-3 were tested;

[0136] The specific test results are shown in Table 1:

[0137] Table 1

[0138]

[0139]

[0140] As can be seen from the test data in Table 1, the colorful simulated stone paint prepared by the present invention has color points that can reach uniform particles of about 0.2 mm, and the color points are clear, there is no leakage of white sand, and there is no color bleeding; the colorful simulated stone paint prepared by the present invention has a strong concave and convex effect on the sprayed board surface, an obvious sand feel, a high coating rate and a realistic simulated stone paint effect; the colorful simulated stone paint prepared by the present invention has a board surface effect close to that of real stone paint, and the imitation stone effect is better than that of real stone paint.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A colorful simulated stone paint, characterized in that: The colorful simulated stone paint comprises a base material and a granulation emulsion in a mass ratio of (7.5-8): (2.5-3); The base material comprises the following components by weight: 0.25-0.35 parts of hydroxypropyl methylcellulose, 0.25-0.35 parts of hydrophobic hydroxyethyl cellulose, 18-23 parts of acrylic emulsion, 0.3-0.4 parts of protective glue, 0.5-10 parts of filler, 50-60 parts of snowflake white sand, and 15-25 parts of solvent; The acrylic emulsion in the base material is a pure acrylic emulsion having a viscosity of 1000-6000 mPa·s; the filler comprises rutile titanium dioxide and calcined kaolin, the mass ratio of the rutile titanium dioxide to the calcined kaolin being (0.5-1):(4-6); and the calcined kaolin is 4000 mesh calcined kaolin; The granulation emulsion comprises the following components by weight: 1-2 parts of nanocellulose, 80-85 parts of acrylic emulsion, 4-6 parts of lithium magnesium silicate, and 4-12 parts of solvent; The acrylic emulsion in the granulation emulsion is a silicone acrylic emulsion, the viscosity of the silicone acrylic emulsion is 500-3000 mPa·s, and the solid content of the silicone acrylic emulsion is 46-48%; the nanocellulose in the granulation emulsion is microfibrillated cellulose, the fiber diameter of the microfibrillated cellulose is 5 nm-1 μm, and the length of the microfibrillated cellulose is 100 nm-100 μm; Wherein, the colorful simulated stone paint also includes a base material toner, and the mass ratio of the base material to the base material toner is (98-100): (0-2); The particle size of the colorful simulated stone paint is 0.1-0.3 mm, and the coating rate of the colorful simulated stone paint is close to 0.6-0.8 kg / m 2 .

2. The colorful simulated stone paint according to claim 1, characterized in that: The protective glue is a lithium magnesium silicate solution.

3. The colorful simulated stone paint according to claim 2, characterized in that: The content of lithium magnesium silicate in the lithium magnesium silicate solution is 5-15 wt %.

4. The colorful simulated stone paint according to claim 1, characterized in that: The solvent in the base material is water.

5. The colorful simulated stone paint according to claim 1, characterized in that: The base toner is a color paste, and the color content of the color paste is 45-75%.

6. The colorful simulated stone paint according to claim 1, characterized in that: The solvent in the granulation emulsion is water.

7. The colorful simulated stone paint according to claim 1, characterized in that: The base material further comprises any one or a combination of at least two of a bactericide, a defoaming agent, a dispersant, a film-forming aid, an antifreeze agent or a pH regulator.

8. The colorful simulated stone paint according to claim 1 or 7, characterized in that: The base material further comprises the following components by weight: 0-0.4 parts of an optional bactericide, 0-0.4 parts of an optional defoaming agent, 0-0.4 parts of an optional dispersant, 0-1.2 parts of an optional film-forming aid, 0-1 parts of an optional antifreeze agent, and 0-0.2 parts of an optional pH regulator.

9. The colorful simulated stone paint according to claim 1, characterized in that: The granulation emulsion further comprises any one or a combination of at least two of a bactericide, a defoaming agent, a film-forming aid, an antifreeze agent or a pH regulator.

10. The colorful simulated stone paint according to claim 1 or 7, characterized in that: The granulation emulsion further comprises the following components by weight: 0-0.4 parts of an optional bactericide, 0-0.4 parts of an optional defoaming agent, 0-5 parts of an optional film-forming aid, and 0-3 parts of an optional antifreeze agent.

11. The colorful simulated stone paint according to claim 1, characterized in that: The colorful simulated stone paint also includes an optional thickener.

12. The colorful simulated stone paint according to claim 11, characterized in that: The added amount of the thickener is 0-0.5% of the total mass of the base material and the granulation emulsion.

13. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The fungicide is an isothiazolinone fungicide.

14. The colorful simulated stone paint according to claim 13, characterized in that: The fungicide is a combination of 2-methyl-4-isothiazolin-3-one (MIT) and 1,2-benzisothiazolin-3-one.

15. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The defoaming agent is a polymer composite mineral oil defoaming agent.

16. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The dispersant is a polycarboxylate ammonium salt dispersant.

17. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The film-forming aid is 12-ester alcohol.

18. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The antifreeze agent is propylene glycol.

19. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The pH regulator is 2-amino-2-methyl-1-propanol.

20. The colorful simulated stone paint according to claim 8 or 10, characterized in that: The thickener is an acrylic alkali swelling thickener.

21. A method for preparing a colorful simulated stone paint according to any one of claims 1 to 20, characterized in that: The preparation method comprises the following steps: Taking the components of the base material and mixing them to obtain the base material; taking the components of the granulation emulsion and mixing them to obtain the granulation emulsion; Mixing the base material and the base material toner to perform coloring to obtain a colored base material; The colored base material and the granulation emulsion are mixed to obtain the colorful simulated stone paint.

22. The method for preparing the colorful simulated stone paint according to claim 21, characterized in that: After the colored base material and the granulation emulsion are mixed, the viscosity needs to be adjusted by adding a thickener; the viscosity of the colorful simulated stone paint needs to be adjusted to 92-100 ku.

23. Use of the colorful simulated stone paint according to any one of claims 1 to 20 in preparing architectural coatings.

Images