Two-component colorful stone-like coating as well as preparation method and application thereof

Abstract

The invention provides a two-component colorful stone-like coating as well as a preparation method and application thereof, and relates to the technical field of building coatings. The two-component colorful stone-like paint comprises a stone-like paint main material and a colorful paint main material, the stone-like paint main material comprises a stone-like paint base material and a granulation emulsion, and the stone-like paint base material comprises nano cellulose, hydroxypropyl methyl cellulose, hydrophobic hydroxyethyl cellulose, an acrylic emulsion, protective glue, a filler, snowflake white sand and a solvent; the granulation emulsion comprises magnesium lithium silicate, nano cellulose, a modified urea solution, acidic nano silica sol and a solvent. The two-component colorful stone-like coating can effectively relieve the sagging and cracking phenomena generated when an existing colorful stone-like coating is sprayed at a time, the stone-like effect is textured and vivid, and the color point spraying condition is stable. The double-component colorful stone-like coating can be widely applied to the preparation process of building coatings.

Description

Technical Field

[0001] The invention relates to the technical field of architectural coatings, in particular to a two-component colorful stone-imitation coating and a preparation method and application thereof. Background Art

[0002] Since 2023, my country has entered the era of existing housing, and the market capacity of architectural coatings has gradually shrunk. In the current highly competitive market environment, the market share of real stone paint has dropped sharply, and the use of colorful paints with imitation marble effects has increased significantly.

[0003] In recent years, new construction supporting solutions have appeared in the market. Real stone paint or texture paint is used for mid-coat, and multi-color paint is used for topcoat. The imitation marble texture and imitation stone effect are deeply loved by customers. However, this type of construction supporting products requires 1 to 2 coats of real stone paint or texture, and 1 to 2 coats of multi-color paint. The construction process is complicated, and the cost is also high at a time when labor costs are increasing sharply.

[0004] For example: CN115322596B "A colorful imitation stone effect paint and its preparation method and coating method" provides a colorful imitation stone effect paint. Through the synergistic effect of textured mid-coat, main material color and surface color, the surface of the paint can achieve a hazy and natural aesthetic effect from the visual and tactile sense. At the same time, the paint also has a heat insulation function. The textured mid-coat uses a real stone paint spray gun. Through the discharge amount and air pressure of the spray gun, the textured mid-coat is like a small ball point on the substrate, forming a strong uneven burnt surface to lay a good foundation for the overall imitation stone effect. At the same time, it provides a hard texture of stone, and adds hollow microspheres to reduce the thermal conductivity. With the use of infrared reflective color paste, it has a strong reflective heat insulation function. The concave and convex texture effect is formed by textured mid-coat, which requires multiple construction processes.

[0005] CN111018474B "Water-based sand-wrapped multi-color coating and its preparation method" provides a method of cross-linking cellulose ether and pure acrylic emulsion with silica sol to form an outer film and internal cross-linking, so that the coating is not easy to break after coating and the particles are not easy to fall off. Through hydrogen bonding between silica sol and hydroxyl and carboxyl substances, cellulose main chain entanglement, and improved association between cellulose and hydrophobic groups in emulsion, a high-strength three-dimensional spatial network structure is formed, which effectively solves the problem of low strength of sand-wrapped multi-color dots. However, after the second sand spraying, a layer of white sand floats on the surface of the color dots, and the effect is quite different from that of real stone paint primer and then spraying multi-color main materials. At the same time, this scheme only increases the construction volume compared with traditional multi-color coatings, and it is also impossible to achieve the level of 2-3kg / ㎡ without sagging after one spraying. In addition, there is a risk of cracking of the color dots due to the increase in spraying consumption, and only multi-color spray paint can be used for spraying construction, and the discharge speed is slow and the construction efficiency is low.

[0006] As can be seen from the above, in order to alleviate the increase in labor costs, the existing marble-like texture and stone-like effect coatings need to reduce the construction process, and it is best to use a one-step spraying construction process. However, the existing coatings have the following problems:

[0007] 1. It is impossible to achieve a spraying consumption of 2-3kg / ㎡ without sagging;

[0008] 2. When the consumption of one spraying exceeds 1.2kg / ㎡, there is a risk of cracking;

[0009] 3. After the multi-color paint is dried, the surface will have a layer of white sand. The texture effect cannot achieve the imitation stone effect of real stone paint or texture paint primer, and the imitation stone effect is not realistic.

[0010] Therefore, it is necessary and urgent to develop a two-component multi-color coating that can be applied in one pass to alleviate the above problems.

[0011] In view of this, the present invention is proposed. Summary of the invention

[0012] The first purpose of the present invention is to provide a two-component colorful stone-like paint, which can effectively alleviate the sagging and cracking phenomena caused by the existing colorful stone-like paint during one-time construction and spraying, and also has the imitation stone effect of real stone paint or textured primer.

[0013] The second object of the present invention is to provide a method for preparing a two-component colorful stone-like paint.

[0014] The third object of the present invention is to provide an application of a two-component colorful stone-like paint.

[0015] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0016] The present invention provides a two-component colorful stone-imitation paint, which comprises a real stone paint main material and a colorful paint main material;

[0017] The main material of the real stone paint includes a real stone paint base material and a granulation emulsion, wherein:

[0018] The real stone paint base material includes: nano cellulose, hydroxypropyl methyl cellulose, hydrophobic hydroxyethyl cellulose, acrylic emulsion, protective glue, filler, snowflake white sand and solvent;

[0019] The granulation emulsion comprises: lithium magnesium silicate, nano cellulose, modified urea solution, acidic nano silica sol and solvent.

[0020] Furthermore, the main material of the multi-colored paint is a multi-colored imitation stone paint;

[0021] Preferably, the colorful imitation stone paint has a specific gravity of 1.01 to 1.3 g / cm 3 , colorful paint with a color point ratio of 40 to 75%.

[0022] Furthermore, the mixing mass ratio of the real stone paint main material and the multi-color paint main material is (50-60): (40-50).

[0023] Furthermore, the real stone paint base material comprises, by weight:

[0024] 0.25-0.35 parts of hydroxypropyl methylcellulose, 0.25-0.35 parts of hydrophobic hydroxyethyl cellulose, 1823 parts of acrylic emulsion, 0.5-1 parts of nanocellulose, 8-10 parts of protective glue, 0.510 parts of filler, 5060 parts of snowflake white sand and 1525 parts of solvent;

[0025] And / or, the granulation emulsion comprises, by weight:

[0026] 4-6 parts of lithium magnesium silicate, 2-3 parts of nanocellulose, 0.3-0.5 parts of modified urea solution, 80-90 parts of acidic nano silica sol and 10-15 parts of solvent.

[0027] Furthermore, the acrylic emulsion in the real stone paint base material is pure acrylic emulsion;

[0028] Preferably, the viscosity of the pure acrylic acid emulsion is 10006000 mPa·s;

[0029] Preferably, the solid content of the pure acrylic acid emulsion is 4548%;

[0030] Preferably, the protective colloid is a lithium magnesium silicate solution;

[0031] Preferably, the content of lithium magnesium silicate in the lithium magnesium silicate solution is 515wt%;

[0032] Preferably, the filler comprises rutile titanium dioxide and calcined kaolin;

[0033] Preferably, the solvent in the base material is water.

[0034] Furthermore, the fiber diameter of the nanocellulose in the granulation emulsion is 2 to 35 nm, the fiber length is 100 to 500 nm, and the crystallinity is 55 to 75%;

[0035] And / or, the acidic nano-silica sol has a particle size of 22 nm and a solid content of 40%.

[0036] Furthermore, the real stone paint base material also includes a base material toner;

[0037] And / or, the real stone paint base material further includes any one or a combination of at least two of a bactericide, a defoamer, a dispersant, a film-forming aid, an antifreeze agent and a pH regulator;

[0038] Preferably, the real stone paint base material also includes the following components by weight: 0.2-0.4 parts of bactericide, 0.2-0.4 parts of defoamer, 0.2-0.4 parts of dispersant, 0.9-1.2 parts of film-forming aid, 0.5-1 parts of antifreeze agent and 0.1-0.2 parts of pH adjuster.

[0039] Furthermore, the mixing mass ratio of the real stone paint base material and the granulation emulsion is (75-80): (20-25).

[0040] The present invention provides a method for preparing the above-mentioned two-component colorful stone-like paint, the preparation method comprising:

[0041] (A) mixing the raw materials of each component of the real stone paint base material to obtain the real stone paint base material;

[0042] and, mixing the raw materials of the various components of the granulation emulsion to obtain a granulation emulsion;

[0043] (B) mixing the stone paint base material and the granulation emulsion, and then pre-cutting and granulating them in sequence, standing and mixing them to obtain the stone paint main material;

[0044] (C) When in use, the main material of the real stone paint and the main material of the colorful paint are mixed to obtain a two-component colorful imitation stone paint.

[0045] The invention provides an application of the above two-component colorful stone-imitation paint in the preparation of architectural paint.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The two-component colorful imitation stone paint provided by the present invention comprises a real stone paint main material and a colorful paint main material, wherein the real stone paint main material comprises a real stone paint base material and a granulation emulsion, wherein: the real stone paint base material comprises: nanocellulose, hydroxypropyl methylcellulose, hydrophobic hydroxyethyl cellulose, acrylic emulsion, protective glue, filler, snowflake white sand and solvent; the granulation emulsion comprises: lithium magnesium silicate, nanocellulose, modified urea solution, acidic nano silica sol and solvent. After the above-mentioned component raw materials are matched, the two-component colorful imitation stone paint of the present application can effectively alleviate the sagging and cracking phenomena generated by the existing colorful imitation stone paint during one-time construction and spraying, and at the same time, the imitation stone effect has texture and lifelikeness, and the color point spraying situation is stable. In addition, the two-component colorful imitation stone paint of the present application can be constructed once using a real stone paint spray gun, which increases the discharge speed and discharge amount, and improves the spraying construction efficiency.

[0048] The preparation method of the two-component colorful imitation stone coating provided by the present invention comprises: firstly preparing a real stone coating base material and a granulation emulsion respectively, then mixing the real stone coating base material and the granulation emulsion, sequentially performing pre-cutting and granulation, and mixing after standing to obtain a real stone coating main material; when using, mixing the real stone coating main material and the colorful coating main material to obtain the two-component colorful imitation stone coating. The above-mentioned preparation method of the present application has the advantages of simple preparation process and easy operation.

[0049] The two-component colorful stone-like paint provided by the invention can be widely used in the preparation process of architectural paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Example 1 provided by the present invention;

[0052] Figure 2 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Example 5 provided by the present invention;

[0053] Figure 3 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Comparative Example 2 provided by the present invention;

[0054] Figure 4 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Comparative Example 4 provided by the present invention. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0056] According to one aspect of the present invention, a two-component colorful stone-imitation paint comprises a real stone paint main material and a colorful paint main material;

[0057] The main material of the real stone paint includes a real stone paint base material and a granulation emulsion, wherein:

[0058] The real stone paint base material includes: nano cellulose, hydroxypropyl methyl cellulose, hydrophobic hydroxyethyl cellulose, acrylic emulsion, protective glue, filler, snowflake white sand and solvent;

[0059] The granulation emulsion comprises: lithium magnesium silicate, nano cellulose, modified urea solution, acidic nano silica sol and solvent.

[0060] The two-component colorful imitation stone paint provided by the present invention comprises a real stone paint main material and a colorful paint main material, wherein the real stone paint main material comprises a real stone paint base material and a granulation emulsion, wherein: the real stone paint base material comprises: nanocellulose, hydroxypropyl methylcellulose, hydrophobic hydroxyethyl cellulose, acrylic emulsion, protective glue, filler, snowflake white sand and solvent; the granulation emulsion comprises: lithium magnesium silicate, nanocellulose, modified urea solution, acidic nano silica sol and solvent. After the above-mentioned component raw materials are matched, the two-component colorful imitation stone paint of the present application can effectively alleviate the sagging and cracking phenomena generated by the existing colorful imitation stone paint during one-time construction and spraying, and at the same time, the imitation stone effect has texture and lifelikeness, and the color point spraying situation is stable. In addition, the two-component colorful imitation stone paint of the present application can be constructed once using a real stone paint spray gun, which increases the discharge speed and discharge amount, and improves the spraying construction efficiency.

[0061] Specifically, the principle of achieving the above effect in this application is:

[0062] 1. The nanocellulose in the real stone paint base material is connected with the methyl group of hydroxypropyl methylcellulose, the hydrophobic group of hydrophobic hydroxyethyl cellulose and the latex particles of acrylic emulsion, which can effectively enhance the cohesive force of the base material;

[0063] At the same time, the hydroxyl groups of nanocellulose are connected to the high-strength gel surface through the hydroxypropyl group and the hydroxyl group and the layered structure of lithium magnesium silicate, which prevents the color dots from drying and shrinking too quickly during the drying process, causing the color dots of the real stone paint effect to crack.

[0064] 2. The NH groups formed by the modified urea solution in the granulation emulsion and the hydroxyl groups of the nanocellulose combine with the exposed hydroxyl and hydroxypropyl groups of the nanocellulose on the surface of the color dots, and form a network structure through the entanglement of the macromolecular chains, which perfectly wraps the surface of the color dots to prevent the color dots from breaking up when sprayed in a highly thixotropic fluid state; at the same time, a steric hindrance effect is generated, and the double-layer network structure formed by the nanocellulose and the modified urea solution closely fits the color dots during the drying process to prevent the paint film from being too thick and causing cracking.

[0065] That is, the nanocellulose in the base material and granulation emulsion of the present application can not only form a network structure with macromolecular chains intertwined with each other with the modified urea solution, but also form a double electric layer network structure. Therefore, it can not only perfectly cover the color dots, but also closely adhere to the color dots during the drying process.

[0066] 3. After the main materials of real stone paint and colorful paint are mixed, the overall pH value is close to neutral, the agglomeration stability of acidic silica sol is reduced, and the silica sol particles rely on siloxane to form chemical bonds (si-o-si) to form a stable spatial network structure. The main materials form a highly thixotropic rheological colloid in about 10 minutes, which can reach 2-32-3kg / ㎡ in one spraying;

[0067] It can be seen from this that the addition of nanocellulose to the real stone paint base material of the present application, as well as the addition of nanocellulose, modified urea solution and acidic nano-silica sol in the granulation emulsion, is the key to the two-component colorful stone-like paint of the present application to achieve one-time construction spraying without sagging and cracking.

[0068] In a preferred embodiment of the present invention, the main material of the multi-colored paint is a multi-colored imitation stone paint;

[0069] Preferably, the colorful imitation stone paint has a specific gravity of 1.01 to 1.3 g / cm 3 , colorful paint with a color point ratio of 40 to 75%.

[0070] In a preferred embodiment of the present invention, the mixing mass ratio of the main material of the real stone paint and the main material of the multi-color paint is (50-60): (40-50).

[0071] As a preferred embodiment, after the main materials of the real stone paint and the main materials of the colorful paint of the present application are mixed in the above-mentioned mass ratio, the overall pH value is close to neutral, the aggregation stability of the acidic silica sol is reduced, and the silica sol particles rely on siloxane to form chemical bonds (si-o-si) to form a stable spatial network structure. The main materials form a highly thixotropic rheological colloid in about 10 minutes, and can reach 2 to 3 kg / m2 in one spraying.

[0072] In a preferred embodiment of the present invention, the real stone paint base material comprises, by weight:

[0073] 0.25-0.35 parts of hydroxypropyl methylcellulose, 0.25-0.35 parts of hydrophobic hydroxyethyl cellulose, 1823 parts of acrylic emulsion, 0.5-1 parts of nanocellulose, 8-10 parts of protective glue, 0.510 parts of filler, 50-60 parts of snowflake white sand and 1525 parts of solvent;

[0074] Typical but non-limiting preferred embodiments of the above hydroxypropyl methylcellulose are: 0.25 parts, 0.26 parts, 0.28 parts, 0.3 parts, 0.32 parts and 0.35 parts. Typical but non-limiting preferred embodiments of the above hydrophobic hydroxyethyl cellulose are: 0.25 parts, 0.26 parts, 0.28 parts, 0.3 parts, 0.32 parts and 0.35 parts. Typical but non-limiting preferred embodiments of the above acrylic emulsion are: 18 parts, 19 parts, 20 parts, 21 parts, 22 parts and 23 parts. Typical but non-limiting preferred embodiments of the above nanocellulose are: 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts and 1 parts. Typical but non-limiting preferred embodiments of the above protective glue are: 8 parts, 9 parts and 10 parts. Typical but non-limiting preferred embodiments of the filler are: 0.5 parts, 1 parts, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts and 10 parts. Typical but non-limiting preferred embodiments of the snowflake white sand are: 50 parts, 52 parts, 54 parts, 56 parts, 58 parts and 60 parts. Typical but non-limiting preferred embodiments of the solvent are: 15 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts and 25 parts.

[0075] In a preferred embodiment of the present invention, the granulation emulsion comprises, by weight:

[0076] 4-6 parts of lithium magnesium silicate, 2-3 parts of nanocellulose, 0.3-0.5 parts of modified urea solution, 80-90 parts of acidic nano silica sol and 10-15 parts of solvent.

[0077] Typical but non-limiting preferred embodiments of the above-mentioned lithium magnesium silicate are: 4 parts, 4.5 parts, 5 parts, 5.5 parts and 6 parts. Typical but non-limiting preferred embodiments of the above-mentioned nanocellulose are: 2 parts, 2.5 parts and 3 parts. Typical but non-limiting preferred embodiments of the above-mentioned modified urea solution are: 0.3 parts, 0.4 parts and 0.5 parts. Typical but non-limiting preferred embodiments of the above-mentioned acidic nano-silica sol are: 80 parts, 81 parts, 82 parts, 83 parts, 84 parts, 85 parts, 86 parts, 87 parts, 88 parts, 89 parts and 90 parts. Typical but non-limiting preferred embodiments of the above-mentioned solvent are: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts and 15 parts.

[0078] In the above preferred embodiment, the acrylic emulsion in the real stone paint base material is pure acrylic emulsion;

[0079] Preferably, the viscosity of the pure acrylic acid emulsion is 1000 6000 mPa·s;

[0080] Preferably, the solid content of the pure acrylic acid emulsion is 45-48%;

[0081] Preferably, the protective colloid is a lithium magnesium silicate solution;

[0082] Preferably, the content of lithium magnesium silicate in the lithium magnesium silicate solution is 515wt%;

[0083] Preferably, the filler comprises rutile titanium dioxide and calcined kaolin;

[0084] Preferably, the solvent in the base material is water.

[0085] In a preferred embodiment of the present invention, the fiber diameter of the nanocellulose in the granulation emulsion is 2 to 35 nm, the fiber length is 100 to 500 nm, and the crystallinity is 55 to 75%;

[0086] And / or, the acidic nano-silica sol has a particle size of 22 nm and a solid content of 40%.

[0087] In a preferred embodiment of the present invention, the real stone paint base material further comprises a base material toner;

[0088] In a preferred embodiment of the present invention, the real stone paint base material further comprises any one or a combination of at least two of a bactericide, a defoamer, a dispersant, a film-forming aid, an antifreeze agent and a pH regulator;

[0089] Preferably, the real stone paint base material also includes the following components by weight: 0.2-0.4 parts of bactericide, 0.2-0.4 parts of defoamer, 0.2-0.4 parts of dispersant, 0.9-1.2 parts of film-forming aid, 0.5-1 parts of antifreeze agent and 0.1-0.2 parts of pH adjuster.

[0090] In a preferred embodiment of the present invention, the mixing mass ratio of the real stone paint base material and the granulation emulsion is (75-80): (20-25).

[0091] According to one aspect of the present invention, a method for preparing the above-mentioned two-component colorful stone-like paint comprises:

[0092] (A) mixing the raw materials of each component of the real stone paint base material to obtain the real stone paint base material;

[0093] and, mixing the raw materials of the components of the granulation emulsion to obtain a granulation emulsion;

[0094] (B) mixing the stone paint base material and the granulation emulsion, and then pre-cutting and granulating them in sequence, standing and mixing them to obtain the stone paint main material;

[0095] (C) When in use, the main material of the real stone paint and the main material of the colorful paint are mixed to obtain a two-component colorful imitation stone paint.

[0096] The preparation method of the two-component colorful imitation stone coating provided by the present invention comprises: firstly preparing a real stone coating base material and a granulation emulsion respectively, then mixing the real stone coating base material and the granulation emulsion, sequentially performing pre-cutting and granulation, and mixing after standing to obtain a real stone coating main material; when using, mixing the real stone coating main material and the colorful coating main material to obtain the two-component colorful imitation stone coating. The above-mentioned preparation method of the present application has the advantages of simple preparation process and easy operation.

[0097] According to one aspect of the present invention, a use of the above two-component colorful stone-like paint in the preparation of architectural paint.

[0098] The two-component colorful stone-like paint provided by the invention can be widely used in the preparation process of architectural paint.

[0099] The technical solution of the present invention will be further described below in conjunction with embodiments.

[0100] Note: The sources of some raw materials for the following examples and comparative examples of this application are shown in Table 1:

[0101] Table 1:

[0102]

[0103]

[0104] Examples 1 to 3

[0105] Examples 1 to 3 provide three different proportions of two-component colorful stone-like paints, which respectively include the following components in parts by weight (see Table 2):

[0106] Table 2:

[0107]

[0108]

[0109]

[0110] Note: The B component can be a conventional multi-colored imitation stone paint. For example, the composition of the B component conventional multi-colored imitation stone paint used in this embodiment is shown in Table 3.

[0111] Table 3:

[0112]

[0113]

[0114] The preparation method of the two-component colorful stone-like paint comprises:

[0115] (1) Preparation of real stone paint base material:

[0116] Deionized water is added to the container in proportion, the speed is 200-500rpm, and then the bactericide, defoamer and dispersant are slowly added, and stirred for 2-5min; the speed is increased by 500-1000rpm, and rutile titanium dioxide, 4000 mesh calcined kaolin, hydroxypropyl methylcellulose, hydrophobic hydroxyethyl cellulose, film-forming aid and antifreeze are slowly added, and dispersed for 10-15min. When the viscosity increases, a PH regulator is added, the speed is increased to 1200-1500rpm, and dispersed for 15-30min, the speed is reduced by 500-1000rpm, and pure acrylic acid emulsion is slowly added, and stirred for 5-10min; nanocellulose is added, the speed is increased by 1500-2000rpm, and dispersed for 5-10min, and the speed is reduced to 1000-1500rpm, and snowflake white 120 mesh and 10% lithium magnesium silicate solution are added, and dispersed for 5-10min. After standing, the color can be adjusted.

[0117] (2) Preparation of granulation emulsion:

[0118] Add deionized water in proportion to the container, the speed is 200-500RPM, then add lithium magnesium silicate, increase the speed to 1000-1500RPM, slowly add nanocellulose, 1500-2000RPM, disperse for 5-10 minutes, add modified urea solution, continue to disperse for 5-10 minutes, reduce the speed to 500-800RPM, add acidic nano-silica sol and let it stand for 2 hours before granulation.

[0119] (3) Preparation of main material of real stone paint:

[0120] First, confirm the base color according to the sample or stone, use conventional color paste to adjust the color of the real stone paint effect base material, and prepare different colored base materials.

[0121] Secondly, mix the colored base material after coloring according to the ratio of (base material: granulation phase = 75-80: 20-25), and use a paint knife or other pre-cutting equipment to pre-cut the mixed main material.

[0122] After pre-cutting, select the granulation mesh with corresponding holes according to the size of the stone color dots, start the granulator, rotate at 30 Hz, pour the pre-cut main material into the granulator for granulation. After granulation, let it stand for 10 minutes to mix evenly, and you will get the main material of real stone paint.

[0123] (4) Preparation of two-component colorful stone-like coating:

[0124] On site, component A (real stone paint main material) and component B (conventional colorful imitation stone paint) are stirred and mixed according to the mixing ratio of 50-60:40-50 specified by the manufacturer. The mixing needs to be completed within 2-5 minutes. After mixing evenly, let it stand for 10 minutes. After the two-component colorful main material forms a rheological colloid, it can be sprayed with a real stone paint spray gun.

[0125] Embodiment 4-5

[0126] Examples 4 to 5 provide two different proportions of two-component colorful stone-like paints, which respectively include the following components in parts by weight (see Table 4):

[0127] Table 4:

[0128]

[0129]

[0130] The conventional multi-colored stone-like paint of component B is the same as that of Example 1.

[0131] The preparation method of the two-component colorful stone-like paint is the same as that of Example 1.

[0132] Comparative Examples 1 to 7

[0133] Comparative Examples 1 to 7 provide seven two-component colorful stone-like paints with different proportions, and the two-component colorful stone-like paints respectively include the following components in parts by weight (see Table 5):

[0134] Table 5:

[0135]

[0136]

[0137]

[0138] Note: The main difference between Comparative Example 1 and Examples 1 to 5 of the present invention is that the base material of the real stone paint effect does not contain nanocellulose;

[0139] The main difference between Comparative Example 2 and Examples 1 to 5 of the present invention is that the real stone paint effect granulation phase (granulation emulsion) does not contain nanocellulose;

[0140] The main difference between Comparative Example 3 and Examples 1 to 5 of the present invention is that the modified urea solution is not included in the granulation phase (granulation emulsion) of the real stone paint effect;

[0141] The main difference between Comparative Examples 4 to 6 and Examples 1 to 5 of the present invention is that the content of the acidic nano-silica sol in the real stone paint effect granulation phase (granulation emulsion) is not within the range of 80 to 90 parts;

[0142] The main difference between Comparative Example 7 and Examples 1 to 5 of the present invention is that the content of nanocellulose and modified urea solution in the real stone paint effect granulation phase (granulation emulsion) is not within the content range of Examples 1 to 5.

[0143] The conventional colorful stone-like paint of component B described in Comparative Examples 1 to 7 of the present invention is the same as that in Example 1.

[0144] The preparation methods of the two-component colorful stone-like coatings described in Comparative Examples 1 to 7 of the present invention are the same as those in Example 1.

[0145] Experimental Example 1

[0146] According to the relevant standards of HG / T 4343-2012 "Water-based Multicolor Architectural Coatings", the coatings prepared in Examples 1 to 5 and Comparative Examples 1 to 7 were tested, and the test results are shown in Tables 6 and 7 below:

[0147] Table 6:

[0148]

[0149]

[0150] Table 7:

[0151]

[0152]

[0153] From the above, it can be seen that the two-component colorful stone-like paint prepared in Examples 1 to 5 of the present application has a textured and realistic stone-like effect, and the color point spraying is stable; at the same time, using a real stone paint spray gun for one spraying, it can achieve a spraying consumption of 3kg / ㎡ per spraying without sagging or cracking.

[0154] Figure 1 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Example 1 of the present invention.

[0155] Figure 2 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Example 5 of the present invention.

[0156] Depend on Figure 1 , Figure 2 It can be seen that after the two-component colorful stone-like paints of Example 1 and Example 5 are sprayed, the color dots have a strong texture, no cracks or drips, and have a better effect.

[0157] Comparative Example 1 Compared with the embodiments 1 to 5 of the present invention, in which the base material of the real stone paint does not contain nanocellulose, the imitation stone effect has a texture and the color point spraying is stable; the real stone paint spray gun can be used for one-time spraying, and the consumption of one-time spraying can be 3kg / ㎡ without sagging; however, the cracking is serious after drying;

[0158] Comparative Example 2 Compared with the embodiments 1 to 5 of the present invention, in which the granulation phase (granulation emulsion) of the real stone paint effect does not contain nanocellulose, the imitation stone effect has a weak texture, is flat, and the color dots are slightly broken; a real stone paint spray gun can be used for one-time spraying, and a one-time spraying consumption of 3kg / ㎡ can be achieved without sagging; but severe cracking occurs after drying;

[0159] Figure 3 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Comparative Example 2 of the present invention.

[0160] Depend on Figure 3 It can be seen that after the two-component colorful stone-like paint of comparative example 2 is sprayed, the color dots have a weak texture, and although the sagging is not obvious, the cracking is serious.

[0161] Comparative Example 3 Compared with the embodiment of Examples 1 to 5 of the present invention in which the modified urea solution is not included in the granulation phase (granulation emulsion) of the real stone paint effect, the imitation stone effect has a weak texture and is flat, and the color point spraying is stable; the real stone paint spray gun can be used for one-time spraying, and the consumption of one-time spraying can be 3kg / ㎡ without sagging; but after drying, there is slight local cracking;

[0162] Comparative Examples 4 to 6 Compared with the embodiments 1 to 5 of the present invention, in which the content of the acidic nano-silica sol in the real stone paint effect granulation phase (granulation emulsion) is not within the range of 80 to 90 parts, the viscosity stability of the main material is greatly different;

[0163] Figure 4 This is a spraying effect diagram of the two-component colorful stone-like paint prepared in Comparative Example 4 of the present invention.

[0164] Depend on Figure 4 It can be seen that although the two-component colorful stone-like paint of Comparative Example 4 has no cracking after spraying, the texture of the color dots is weak.

[0165] In Comparative Example 7, relative to Examples 1 to 5 of the present invention, in which the nanocellulose and modified urea solution in the granulation phase (granulation emulsion) of the real stone paint effect are not within the content range of Examples 1 to 5, the imitation stone effect has texture and the color point spraying is stable; a real stone paint spray gun can be used for one-time spraying, and a one-time spraying consumption of 3kg / ㎡ can be achieved without sagging; but the paint film is slightly cracked after drying.

[0166] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 two-component colorful stone-like paint, characterized in that: The two-component colorful imitation stone paint comprises a main material of real stone paint and a main material of colorful paint; The main material of the real stone paint includes a real stone paint base material and a granulation emulsion, wherein: The real stone paint base material includes: nano cellulose, hydroxypropyl methyl cellulose, hydrophobic hydroxyethyl cellulose, acrylic emulsion, protective glue, filler, snowflake white sand and solvent; The granulation emulsion comprises: lithium magnesium silicate, nano cellulose, modified urea solution, acidic nano silica sol and solvent.

2. The two-component colorful stone-like paint according to claim 1, characterized in that: The main material of the multi-colored paint is a multi-colored imitation stone paint; Preferably, the colorful imitation stone paint has a specific gravity of 1.01 to 1.3 g / cm 3 , colorful paint with a color point ratio of 40 to 75%.

3. The two-component colorful stone-like paint according to claim 1, characterized in that: The mixing mass ratio of the real stone paint main material and the multi-color paint main material is (50-60): (40-50).

4. The two-component colorful stone-like paint according to claim 1, characterized in that: The real stone paint base material comprises, by weight: Hydroxypropyl methylcellulose 0.25-0.35 parts, hydrophobic hydroxyethyl cellulose 0.25-0.35 parts, acrylic emulsion 1823 parts, nanocellulose 0.5-1 parts, protective glue 8-10 parts, filler 0.510 parts, snowflake white sand 50-60 parts and solvent 15-25 parts; And / or, the granulation emulsion comprises, by weight: 4-6 parts of lithium magnesium silicate, 2-3 parts of nanocellulose, 0.3-0.5 parts of modified urea solution, 80-90 parts of acidic nano silica sol and 10-15 parts of solvent.

5. The two-component colorful stone-like paint according to claim 4, characterized in that: The acrylic emulsion in the real stone paint base material is pure acrylic emulsion; Preferably, the viscosity of the pure acrylic acid emulsion is 10006000 mPa·s; Preferably, the solid content of the pure acrylic acid emulsion is 45-48%; Preferably, the protective colloid is a lithium magnesium silicate solution; Preferably, the content of lithium magnesium silicate in the lithium magnesium silicate solution is 5 to 15 wt %; Preferably, the filler comprises rutile titanium dioxide and calcined kaolin; Preferably, the solvent in the base material is water.

6. The two-component colorful stone-like paint according to claim 4, characterized in that: The fiber diameter of the nanocellulose in the granulation emulsion is 2 to 35 nm, the fiber length is 100 to 500 nm, and the crystallinity is 55 to 75%; And / or, the acidic nano-silica sol has a particle size of 22 nm and a solid content of 40%.

7. The two-component colorful stone-like paint according to claim 1, characterized in that: The real stone paint base material also includes a base material toner; And / or, the real stone paint base material further includes any one or a combination of at least two of a bactericide, a defoamer, a dispersant, a film-forming aid, an antifreeze agent and a pH regulator; Preferably, the real stone paint base material also includes the following components by weight: 0.2-0.4 parts of bactericide, 0.2-0.4 parts of defoamer, 0.2-0.4 parts of dispersant, 0.9-1.2 parts of film-forming aid, 0.5-1 parts of antifreeze agent and 0.1-0.2 parts of pH adjuster.

8. The two-component colorful stone-like paint according to claim 1, characterized in that: The mixing mass ratio of the real stone paint base material and the granulation emulsion is (75-80): (20-25).

9. A method for preparing a two-component colorful stone-like paint according to any one of claims 1 to 8, characterized in that: The preparation method comprises: (A) mixing the raw materials of each component of the real stone paint base material to obtain the real stone paint base material; and, mixing the raw materials of the components of the granulation emulsion to obtain a granulation emulsion; (B) mixing the stone paint base material and the granulation emulsion, and then pre-cutting and granulating them in sequence, standing and mixing them to obtain the stone paint main material; (C) When in use, the main material of the real stone paint and the main material of the colorful paint are mixed to obtain a two-component colorful imitation stone paint.

10. Use of the two-component colorful stone-like paint according to any one of claims 1 to 8 in preparing architectural paint.

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