Full-body sand wall texture coating simulating non-full-body effect and preparation method thereof

Abstract

The invention provides a whole-body sand wall texture coating simulating a non-whole-body effect and a preparation method of the whole-body sand wall texture coating, and relates to the technical field of coatings. The coating comprises the following components in parts by weight: 13-17 parts of a polymer emulsion, 1-2 parts of silane modified wood fibers, 5-9 parts of organic expanded perlite, 3-5 parts of an auxiliary agent, 7-14 parts of water and 47-55 parts of quartz sand. The silane modified wood fiber is used as a supporting material, the organic expanded perlite is used as a suspended filler, the silane modified wood fiber has the characteristics of supporting and changing surface energy in a coating, and the organic expanded perlite provides suspension and anti-shrinkage functions, so that a coating film can form a film on the surface of aggregate, and the surface of the aggregate is coated with the coating film. And the fullness of the sand wall-shaped porous surface is improved, so that the surface effect of the coating is changed, and the surface effect which is achieved by rolling and coating texture finish paint twice traditionally can be generated when a texture process is used for constructing a building substrate.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a full-body sand-wall-like texture coating with a non-full-body effect imitation and a preparation method thereof. Background Art

[0002] The architectural coatings market is becoming increasingly complete and standardized. At present, while pursuing better coating performance, people also want better surface effects. The complexity of construction technology has increased the diversity of surface effects to a certain extent, which inevitably leads to excessive use of labor and unnecessary expenses. How to transform traditional construction technology from complex to simple and reduce the labor cost during coating construction is a problem faced by major coatings manufacturers.

[0003] Textured paint has a certain three-dimensional texture, which can be matched in a variety of ways to meet the needs of the overall decoration style. It looks very realistic after being applied on the wall. Textured paint generally includes full-body sand wall-like textured paint and non-full-body sand wall textured paint.

[0004] The whole body sand wall texture paint can generally be directly applied on the wall base that has been primed. During the use of this paint, it is often necessary to match the transparent topcoat varnish according to the engineering application requirements after the product is applied to improve the overall performance of the cured coating. This process can achieve one-time molding and simple construction procedures, but the color is single, cross-contamination is easy to occur, and it is easy to fade after being exposed to wind, sun and rain, and it is difficult to repair.

[0005] The non-throughout sand wall texture coating is to apply a colorless / or colored topcoat with covering power on the through-body sand wall texture coating. The colored topcoat often has certain functionalities, such as stain resistance, crack resistance, and wear resistance. The construction process can obtain a natural effect with uniform color, effectively prevent pollution caused by cross-operation, and the wall surface is easy to repair with high surface density.

[0006] It can be seen that compared with the full-body process, the non-full-body process has the advantages of strong repairability and wider application range, but the use of the non-full-body process inevitably leads to excessive use of labor and increases the complexity of the construction process. In addition, the non-full-body process is also prone to problems such as flowery, uneven spraying, fading over time, and poor weather resistance.

[0007] Therefore, it is urgent to develop a coating that can produce a non-throughout finishing effect through the traditional textured paint scraping process, thereby simplifying the process and reducing the problems that may be caused during the construction process.

[0008] In view of this, the present invention is proposed. Summary of the invention

[0009] The purpose of the present invention is to provide a full-body sand-wall texture paint that imitates a non-full-body effect and a preparation method thereof. The full-body sand-wall texture paint can be used with a traditional texture paint scraping process to not only produce a non-full-body finishing effect, but also simplify the process flow, reduce the problems that may arise during the construction process, and greatly reduce labor costs.

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

[0011] In a first aspect, the present invention provides a full-body sand-wall texture coating that simulates a non-through-body effect, wherein the coating comprises the following components by weight:

[0012]

[0013] Preferably, the polymer emulsion is selected from any one of polyacrylic acid emulsion, styrene acrylic resin emulsion, acetyl acrylic resin emulsion, cyclopropyl acrylic resin emulsion or silicone acrylic resin emulsion, or a combination of at least two thereof.

[0014] Preferably, the silane-modified wood fiber is a wood fiber modified by a long carbon chain silane coupling agent.

[0015] Preferably, the long carbon chain silane coupling agent is selected from C12-C18 alkyltrimethoxysilane.

[0016] Preferably, the long carbon chain silane coupling agent is selected from any one of dodecyltrimethoxysilane, tetradecyltrimethoxysilane, hexadecyltrimethoxysilane or octadecyltrimethoxysilane, or a combination of at least two thereof, preferably hexadecyltrimethoxysilane.

[0017] Preferably, the silane-modified wood fiber is prepared by the following steps:

[0018] (a) soaking the wood fiber in water and then washing it with ethanol;

[0019] (b) placing the wood fiber treated in step (a) in a modification liquid for ultrasonic treatment, washing with ethanol, and drying to obtain the silane-modified wood fiber; the modification liquid includes ethanol, ammonia water, tetraethyl orthosilicate and a long carbon chain silane coupling agent.

[0020] Preferably, in step (a), the soaking temperature is 30-40° C., and the soaking time is 15-18 hours.

[0021] Preferably, in step (a), the cleaning is performed at least twice.

[0022] Preferably, in step (b), the volume ratio of ethanol, aqueous ammonia, tetraethyl orthosilicate and long carbon chain silane coupling agent is 100:(1-3):(1-3):(0.5-1.5).

[0023] Preferably, in step (b), the mass percentage of ammonia in the ammonia water is 20-25%.

[0024] Preferably, in step (b), the temperature of the ultrasonic treatment is 30-50° C., the power of the ultrasonic treatment is 1500-3000 W, and the time of the ultrasonic treatment is 3-5 h.

[0025] Preferably, in step (b), the drying temperature is 100-110° C., and the drying time is 4-6 hours.

[0026] Preferably, the organic expanded perlite comprises, from the inside to the outside, an inner core of expanded perlite and talc, a middle layer of a modifier and an outer layer of paraffin.

[0027] Preferably, the modifier is selected from any one of maleic anhydride, stearic acid or titanate, or a combination of at least two thereof.

[0028] Preferably, the mass ratio of the expanded perlite, talc, modifier and paraffin is (2-3):(8-10):(0.1-0.2):(1-2).

[0029] Preferably, the organic expanded perlite is prepared by the following steps:

[0030] The expanded perlite and talc are mixed and heated, and then a modifier is added to perform a first mixing and stirring to obtain an intermediate mixed product; paraffin is added to the intermediate mixed product to perform a second mixing and stirring to obtain the organic expanded perlite.

[0031] Preferably, the heating temperature is 50-70°C.

[0032] Preferably, the rotation speed of the first mixing and stirring is 2000-3000 r / min, and the time of the first mixing and stirring is 5-10 min.

[0033] Preferably, the rotation speed of the second mixing and stirring is 2000-3000 r / min, and the time of the second mixing and stirring is 20-30 min.

[0034] Preferably, the auxiliary agent includes any one of a pH regulator, a film-forming auxiliary agent, an antifreeze agent, a wetting agent, a dispersant, a defoaming agent or a bactericide, or a combination of at least two thereof.

[0035] Preferably, the pH adjuster is an alcohol amine compound neutralizer.

[0036] Preferably, the pH regulator is selected from AMP-95 produced by ANGUS.

[0037] Preferably, the film-forming aid includes alcohol lipid dodecahydrate.

[0038] Preferably, the antifreeze agent comprises propylene glycol.

[0039] Preferably, the wetting agent is selected from any one of Disperbyk-181, BD-405 or LCN407, or a combination of at least two thereof.

[0040] Preferably, the dispersant is selected from any one of Lactimon-ws, SN5040 or OROTAN 731A, or a combination of at least two thereof.

[0041] Preferably, the defoaming agent is selected from any one of Nopco NXZ, BASF F111 or Nopco 1340, or a combination of at least two thereof.

[0042] Preferably, the fungicide comprises a BIT fungicide and / or a MIT fungicide.

[0043] In a second aspect, the present invention provides a method for preparing a full-body sand-wall-like textured coating with a non-full-body effect as described in the first aspect, the preparation method comprising the following steps:

[0044] (1) mixing silane-modified wood fiber, organic expanded perlite, part of water and part of additives, and performing a first dispersion to obtain a slurry;

[0045] (2) adding the remaining water, the remaining additives and the polymer emulsion to the slurry to perform a second dispersion to obtain a base material;

[0046] (3) adding quartz sand to the base material and performing a third dispersion to obtain the non-throughout sand-wall textured coating.

[0047] Preferably, in step (1), the portion of water accounts for 40-50% of the total mass of the water.

[0048] Preferably, in step (1), the auxiliary agents include a pH regulator, a wetting agent, a bactericide, a dispersant and a portion of a defoaming agent.

[0049] Preferably, in step (1), the portion of the defoaming agent accounts for 40 to 50% of the total mass of the defoaming agent.

[0050] Preferably, in step (1), the order of adding materials is: adding water, pH regulator, wetting agent, bactericide, dispersant, defoamer, organic expanded perlite and silane-modified wood fiber into a high-speed disperser in proportion.

[0051] Preferably, in step (1), the rotation speed of the first dispersion is 1200-1500 r / min, and the time of the first dispersion is 30-40 min.

[0052] Preferably, in step (2), the remaining additives include: part of the defoaming agent, the film-forming aid and the antifreeze agent.

[0053] Preferably, in step (2), the order of adding materials is: adding the remaining water, the remaining defoaming agent, the polymer emulsion, the film-forming aid and the antifreeze agent to the slurry in proportion.

[0054] Preferably, in step (2), the rotation speed of the second dispersion is 500-800 r / min, and the time of the second dispersion is 5-15 min.

[0055] Preferably, in step (3), the rotation speed of the third dispersion is 300 to 500 r / min, and the time of the third dispersion is 2 to 8 min.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] (1) The present invention uses silane-modified wood fiber as a supporting material and organic expanded perlite as a suspended filler. The silane-modified wood fiber plays a supporting role and changes the surface energy in the coating, and the organic expanded perlite provides suspension and anti-shrinkage functions, so that the coating can form a film on the aggregate surface and improve the fullness of the sand-walled porous surface, thereby achieving a change in the surface effect of the coating. When the texture process is used to construct the building base material, the surface effect achieved by rolling two coats of topcoat on the texture topcoat can be produced.

[0058] (2) The present invention prepares a full-body sand-wall texture paint process that imitates non-full-body effect paint, which not only reduces the quality requirements for construction workers, but also reduces the use of labor-related costs by changing its construction process steps, thereby avoiding unnecessary cost increases. DETAILED DESCRIPTION

[0059] 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 case of any potential ambiguity, the definitions provided herein take precedence over any dictionary or external definitions. In this application, unless otherwise stated, the use of "or" means "and / or". In addition, the use of the term "including" and other forms is non-limiting.

[0060] It should be noted that specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0061] 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.

[0062] In a first aspect, the present invention provides a full-body sand-wall texture coating that simulates a non-through-body effect, wherein the coating comprises the following components by weight:

[0063]

[0064] In the present invention, silane-modified wood fiber is used as a supporting material and organic expanded perlite is used as a suspended filler. The silane-modified wood fiber plays a supporting role and changes the surface energy in the coating, and the organic expanded perlite provides suspension and anti-shrinkage functions, so that the coating can form a film on the aggregate surface, improve the fullness of the sand-wall-like porous surface, and change the surface effect of the coating, thereby preparing a non-throughout effect coating with a full-body sand-wall-like texture coating process.

[0065] Among them, silane-modified wood fiber plays the role of supporting aggregate and powder in the coating, and can reduce the problem of cracking on the coating surface to a certain extent. Due to its fixed long-chain alkyl group, it reduces the surface energy of the coating surface to a certain extent, allowing the particles with high surface energy inside the coating to migrate to the coating surface, thereby changing the surface effect of the coating.

[0066] Among them, organic expanded perlite is a lightweight porous material with certain suspension and anti-shrinkage functions. During the drying and film-forming process of the coating, it can be well gathered in the upper layer of the wet film without causing water segregation, forming a good coating on the surface of the sand-wall coating to ensure the fullness of the coating; at the same time, the organic expanded perlite and silane-modified wood fiber produce a certain association effect to form a three-dimensional network structure, producing a gelation effect, and further improving the fullness of the coating.

[0067] In an optional embodiment, the content of the polymer emulsion is 13 to 17 parts, for example, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, etc.

[0068] In an optional embodiment, the content of the silane-modified wood fiber is 1 to 2 parts, for example, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, etc.

[0069] In an optional embodiment, the content of organic expanded perlite is 5 to 9 parts, for example, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, etc.

[0070] In an optional embodiment, the content of the auxiliary agent is 3 to 5 parts, for example, it can be 3 parts, 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts, 4 parts, 4.2 parts, 4.4 parts, 4.6 parts, 4.8 parts, 5 parts, etc.

[0071] In an optional embodiment, the water content is 7 to 14 parts, for example, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, etc.

[0072] In an optional embodiment, the content of quartz sand is 45 parts, 48 ​​parts, 49 parts, 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, etc.

[0073] In an optional embodiment, the total weight of the polymer emulsion, the silane-modified wood fiber, the organic expanded perlite, the additive, water and quartz sand is 100 parts.

[0074] In an optional embodiment, the polymer emulsion is selected from any one of polyacrylic acid emulsion, styrene acrylic resin emulsion, acetyl acrylic resin emulsion, cyclopropyl acrylic resin emulsion or silicone acrylic resin emulsion, or a combination of at least two thereof.

[0075] In an optional embodiment, the silane-modified wood fiber is a wood fiber modified by a long carbon chain silane coupling agent;

[0076] In an optional embodiment, the long carbon chain silane coupling agent is selected from C12-C18 alkyltrimethoxysilane.

[0077] In an optional embodiment, the long carbon chain silane coupling agent is selected from any one of dodecyltrimethoxysilane, tetradecyltrimethoxysilane, hexadecyltrimethoxysilane or octadecyltrimethoxysilane, or a combination of at least two thereof, preferably hexadecyltrimethoxysilane.

[0078] In an optional embodiment, the silane-modified wood fiber is prepared by the following steps:

[0079] (a) soaking the wood fiber in water and then washing it with ethanol;

[0080] (b) placing the wood fiber treated in step (a) in a modification liquid for ultrasonic treatment, washing with ethanol, and drying to obtain the silane-modified wood fiber; the modification liquid includes ethanol, ammonia water, tetraethyl orthosilicate and a long carbon chain silane coupling agent.

[0081] In an optional embodiment, in step (a), the soaking temperature is 30-40°C, for example, 30°C, 32°C, 34°C, 36°C, 38°C, 40°C, etc., and the soaking time is 15-18h, for example, 15h, 15.5h, 16h, 16.5h, 17h, 17.5h, 18h, etc.

[0082] In an optional embodiment, in step (a), the number of cleaning is at least 2 times, for example, 2 times, 3 times, 4 times, 5 times, etc.

[0083] In an optional embodiment, in step (b), the volume ratio of ethanol, ammonia water, tetraethyl orthosilicate and long carbon chain silane coupling agent is 100:(1-3):(1-3):(0.5-1.5), for example, it can be 100:1:1:0.5, 100:1:2:0.5, 100:1:2:1, 100:2:1:0.5, 100:2:2:0.5, 100:2:2:1, 100:3:1:0.5, 100:3:2:0.5, 100:3:2:1, 100:3:3:0.5, 100:3:3:0.5, 100:3:3:1, etc.

[0084] In an optional embodiment, in step (b), the mass percentage of ammonia in the ammonia water is 20-25%, for example, it can be 20%, 21%, 22%, 23%, 24%, 25%, etc.

[0085] In an optional embodiment, in step (b), the temperature of the ultrasonic treatment is 30-50°C, for example, it can be 30°C, 32°C, 34°C, 36°C, 38°C, 40°C, 42°C, 44°C, 46°C, 48°C, 50°C, etc.

[0086] In an optional embodiment, in step (b), the power of the ultrasonic treatment is 1500-3000 W, for example, it can be 1500 W, 1600 W, 1800 W, 2000 W, 2200 W, 2400 W, 2600 W, 2800 W, 3000 W, etc.

[0087] In an optional embodiment, in step (b), the ultrasonic treatment time is 3 to 5 h, for example, it can be 3 h, 3.2 h, 3.4 h, 3.6 h, 3.8 h, 4 h, 4.2 h, 4.4 h, 4.6 h, 4.8 h, 5 h, etc.

[0088] In an optional embodiment, in step (b), the drying temperature is 100-110°C, for example, it can be 100°C, 102°C, 104°C, 106°C, 108°C, 110°C, etc.

[0089] In an optional embodiment, in step (b), the drying time is 4 to 6 hours, for example, it can be 4h, 4.2h, 4.4h, 4.5h, 4.6h, 4.8h, 5h, 5.2h, 5.4h, 5.5h, 5.6h, 5.8h, 6h, etc.

[0090] In an optional embodiment, the organic expanded perlite comprises, from the inside to the outside, an inner core of expanded perlite and talc, a middle layer of a modifier, and an outer layer of paraffin.

[0091] In an optional embodiment, the modifier is selected from any one of maleic anhydride, stearic acid or titanate, or a combination of at least two thereof.

[0092] In an optional embodiment, the mass ratio of the expanded perlite, talc, modifier and paraffin is (2-3):(8-10):(0.1-0.2):(1-2);

[0093] Here, “2-3” can be, for example, 2, 2.2, 2.4, 2.5, 2.6, 2.8, 3, etc.;

[0094] Here, “8-10” may be, for example, 8, 8.5, 8.8, 9, 9.2, 9.5, 10, etc.;

[0095] Here, “0.1-0.2” can be, for example, 0.1, 0.12, 0.14, 0.15, 0.16, 0.18, 0.2, etc.;

[0096] Here, “1-2” can be, for example, 1, 1.2, 1.4, 1.5, 1.6, 1.8, 2, etc.

[0097] In an optional embodiment, the organic expanded perlite is prepared by the following steps:

[0098] (A) Mixing and heating expanded pearlite and talc, adding a modifier, and performing a first mixing and stirring to obtain an intermediate mixed product;

[0099] (B) adding paraffin wax to the mixed product for a second mixing and stirring to obtain the organic expanded perlite.

[0100] In an optional embodiment, in step (A), the heating temperature is 50-70°C, for example, it can be 50°C, 52°C, 54°C, 56°C, 58°C, 60°C, 62°C, 64°C, 66°C, 68°C, 70°C, etc.

[0101] In an optional embodiment, in step (A), the rotation speed of the first mixing and stirring is 2000-3000 r / min, for example, it can be 2000 r / min, 2100 r / min, 2200 r / min, 2300 r / min, 2400 r / min, 2500 r / min, 2600 r / min, 2700 r / min, 2800 r / min, 2900 r / min, 3000 r / min, etc.

[0102] In an optional embodiment, in step (A), the first mixing and stirring time is 5 to 10 minutes, for example, it can be 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, 10 minutes, etc.

[0103] In an optional embodiment, in step (B), the rotation speed of the second mixing and stirring is 2000-3000 r / min, for example, it can be 2000 r / min, 2100 r / min, 2200 r / min, 2300 r / min, 2400 r / min, 2500 r / min, 2600 r / min, 2700 r / min, 2800 r / min, 2900 r / min, 3000 r / min, etc.

[0104] In an optional embodiment, in step (B), the second mixing and stirring time is 20 to 30 min, for example, it can be 20 min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min, 30 min, etc.

[0105] In an optional embodiment, the auxiliary agent includes any one of a pH regulator, a film-forming aid, an antifreeze agent, a wetting agent, a dispersant, a defoaming agent or a bactericide, or a combination of at least two thereof.

[0106] In an optional embodiment, the pH adjuster is an alcohol amine compound neutralizer.

[0107] In an optional embodiment, the pH adjuster is selected from AMP-95 produced by ANGUS.

[0108] In an optional embodiment, the film-forming aid includes alcohol lipid dodecahydrate.

[0109] In an alternative embodiment, the antifreeze agent comprises propylene glycol.

[0110] In an optional embodiment, the wetting agent is selected from any one of Disperbyk-181, BD-405 or LCN407, or a combination of at least two thereof.

[0111] In an optional embodiment, the dispersant is selected from any one of Lactimon-ws, SN5040 or OROTAN 731A, or a combination of at least two thereof.

[0112] In an optional embodiment, the defoaming agent is selected from any one of Nopco NXZ, BASF F111 or Nopco 1340, or a combination of at least two thereof.

[0113] In an optional embodiment, the fungicide includes a BIT fungicide and / or a MIT fungicide.

[0114] In a second aspect, the present invention provides a method for preparing a full-body sand-wall-like textured coating with a non-full-body effect as described in the first aspect, the preparation method comprising the following steps:

[0115] (1) mixing silane-modified wood fiber, organic expanded perlite, part of water and part of additives, and performing a first dispersion to obtain a slurry;

[0116] (2) adding the remaining water, the remaining additives and the polymer emulsion to the slurry to perform a second dispersion to obtain a base material;

[0117] (3) adding quartz sand to the base material and performing a third dispersion to obtain the non-throughout sand-wall textured coating.

[0118] In an optional embodiment, in step (1), the portion of water accounts for 40-50% of the total mass of the water, for example, it may be 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc.

[0119] In an optional embodiment, in step (1), the part of the auxiliary agents includes a pH regulator, a wetting agent, a bactericide, a dispersant and a part of the defoaming agent.

[0120] In an optional embodiment, in step (1), the portion of the defoaming agent accounts for 40-50% of the total mass of the defoaming agent, for example, it can be 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc.

[0121] In an optional embodiment, in step (1), the order of adding materials is: adding water, pH regulator, wetting agent, bactericide, dispersant, defoamer, organic expanded perlite and silane-modified wood fiber into a high-speed disperser in proportion.

[0122] In an optional embodiment, in step (1), the rotation speed of the first dispersion is 1200-1500 r / min, for example, it can be 1200 r / min, 1250 r / min, 1300 r / min, 1350 r / min, 1400 r / min, 1450 r / min, 1500 r / min, etc.

[0123] In an optional embodiment, in step (1), the first dispersion time is 30 to 40 minutes, for example, 30 minutes, 32 minutes, 34 minutes, 36 minutes, 38 minutes, 40 minutes, etc.

[0124] In an optional embodiment, in step (2), the remaining additives include: part of the defoaming agent, the film-forming aid and the antifreeze agent.

[0125] In an optional embodiment, in step (2), the order of adding materials is: adding the remaining water, the remaining defoaming agent, the polymer emulsion, the film-forming aid and the antifreeze agent to the slurry in proportion.

[0126] In an optional embodiment, in step (2), the rotation speed of the second dispersion is 500-800 r / min, for example, it can be 500 r / min, 550 r / min, 600 r / min, 650 r / min, 700 r / min, 750 r / min, 800 r / min, etc.

[0127] In an optional embodiment, in step (2), the second dispersion time is 5 to 15 minutes, for example, it can be 5 minutes, 6 minutes, 8 minutes, 10 minutes, 12 minutes, 14 minutes, 15 minutes, etc.

[0128] In an optional embodiment, in step (3), the rotation speed of the third dispersion is 300-500 r / min, for example, it can be 300 r / min, 320 r / min, 340 r / min, 360 r / min, 380 r / min, 400 r / min, 420 r / min, 440 r / min, 460 r / min, 480 r / min, 500 r / min, etc.

[0129] In an optional embodiment, in step (3), the time of the third dispersion is 2 to 8 minutes, for example, it can be 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, 8 minutes, etc.

[0130] The present invention is further described below by way of examples. Unless otherwise specified, the materials in the examples are prepared according to existing methods or directly purchased from the market.

[0131] The sources of raw materials in the following examples and comparative examples are as follows:

[0132]

[0133]

[0134] Preparation Example 1

[0135] This preparation example provides a silane-modified wood fiber, which is prepared by the following steps:

[0136] (a) Soak the wood fiber in distilled water at 30°C for 15 h, squeeze out the water, and then wash it twice with anhydrous ethanol for later use;

[0137] (b) adding the wood fiber treated in step (a) to the modification solution, and ultrasonically treating the fiber at 40° C. and 2000 W power for 4 h; taking out the fiber, washing it with ethanol, and then drying it in an oven at 105° C. to obtain silane-modified wood fiber;

[0138] The mass ratio of the wood fiber to the modified liquid is 1:50, and the modified liquid comprises a mixed liquid of anhydrous ethanol, ammonia water, ethyl orthosilicate and hexadecyltrimethoxysilane in a volume ratio of 100:2:2:1.

[0139] Preparation Example 2

[0140] This preparation example provides a silane-modified wood fiber, which differs from Preparation Example 1 in that hexadecyltrimethoxysilane is replaced with an equal mass of dodecyltrimethoxysilane, and the other steps are completely consistent with Preparation Example 1.

[0141] Preparation Example 3

[0142] This preparation example provides a silane-modified wood fiber, which differs from Preparation Example 1 in that hexadecyltrimethoxysilane is replaced with octadecyltrimethoxysilane of equal mass, and the other steps are completely consistent with Preparation Example 1.

[0143] Preparation Example 4

[0144] This preparation example provides a silane-modified wood fiber. The difference from Preparation Example 1 is that the modification liquid includes a mixture of anhydrous ethanol, ammonia water, ethyl orthosilicate and hexadecyltrimethoxysilane in a volume ratio of 100:0.5:0.5:0.5, and the other steps are exactly the same as Preparation Example 1.

[0145] Preparation Example 5

[0146] This preparation example provides a silane-modified wood fiber. The difference from Preparation Example 1 is that the modification liquid includes a mixture of anhydrous ethanol, ammonia water, ethyl orthosilicate and hexadecyltrimethoxysilane in a volume ratio of 100:3:3:1.5, and the other steps are exactly the same as Preparation Example 1.

[0147] Preparation Example 6

[0148] This preparation example provides an organic expanded perlite, which is prepared by the following steps:

[0149] (A) 2.5 parts of expanded perlite were placed in a drying oven and dried at 120° C. for 6 hours. The dried expanded perlite and 9 parts of talc were then placed in a high-speed mixer (the high-speed mixer was heated to 60° C.), and 0.15 parts of a modifier (stearic acid) were added. The mixture was mixed at a high-speed rotation of 2500 r / min for 7.5 minutes to uniformly coat the modifier, thereby obtaining an intermediate mixed product.

[0150] (B) adding 1.5 parts of paraffin wax to the intermediate mixed product, mixing for 7.5 minutes in a high-speed rotating system at 2500 r / min, and performing secondary coating to obtain organic expanded pearlite.

[0151] Comparative Preparation Example 1

[0152] This comparative preparation example provides a silane-modified wood fiber, which is different from Preparation Example 1 in that ammonia water and ethyl orthosilicate are no longer added, and the other steps are completely consistent with Preparation Example 1.

[0153] Comparative Preparation Example 2

[0154] This comparative preparation example provides a silane-modified wood fiber, which is different from Preparation Example 1 in that hexadecyltrimethoxysilane is no longer added, and the other steps are completely consistent with Preparation Example 1.

[0155] Comparative Preparation Example 3

[0156] This comparative preparation example provides an organic expanded perlite, which is prepared by the following steps:

[0157] Take 2.5 parts of expanded perlite and put it into a drying oven, dry it at 120°C for 6 hours, then put the dried expanded perlite and 9 parts of talc into a high-speed mixer (first heat the high-speed mixer to 60°C), then add 0.15 parts of modifier (stearic acid), and mix it for 7.5 minutes in a high-speed rotation system at 2500r / min to evenly coat the modifier to obtain organic expanded perlite.

[0158] Comparative Preparation Example 4

[0159] This comparative preparation example provides an organic expanded perlite, which is prepared by the following steps:

[0160] Take 2.5 parts of expanded perlite and put it into a drying oven, dry it at 120°C for 6 hours, then put the dried expanded perlite and 9 parts of talcum powder into a high-speed mixer (first heat the high-speed mixer to 60°C), then add 1.5 parts of paraffin, and mix it for 7.5 minutes in a high-speed rotation system at 2500r / min to evenly coat the modifier to obtain organic expanded perlite.

[0161] Comparative Preparation Example 5

[0162] This comparative preparation example provides an organic expanded perlite, which is different from Preparation Example 7 only in that talc is no longer added, and the other steps are completely consistent with Preparation Example 7.

[0163] Embodiments 1 to 5

[0164] Examples 1 to 5 provide five formulations of non-throughout sand-wall texture coatings. The coatings in each example include the components shown in Table 1 below by weight:

[0165] Table 1

[0166]

[0167]

[0168] In Table 1, the emulsion provided in Example 1 is a polyacrylic acid emulsion; the emulsion provided in Example 2 is a styrene-acrylic resin emulsion; the emulsion provided in Example 3 is an acetylene-acrylic resin emulsion; the emulsion provided in Example 4 is a cyclopropane resin emulsion; the emulsion provided in Example 5 is a silicone-acrylic resin emulsion; the silane-modified wood fibers are all the silane-modified wood fibers provided in Preparation Example 1; and the organic expanded perlite is all the silane-modified wood fibers provided in Preparation Example 6.

[0169] The above-mentioned whole body sand wall texture paint is prepared by the following steps:

[0170] (1) According to the proportion, part of water, pH regulator, wetting agent, bactericide, dispersant, part of defoaming agent, organic expanded perlite, and silane-modified wood fiber are slowly added to a high-speed disperser in sequence, the speed is adjusted to 1300 r / min, and high-speed dispersion is performed for 35 minutes; wherein, the part of water accounts for 45% of the total mass of the water; and the part of defoaming agent accounts for 45% of the total mass of the defoaming agent.

[0171] (2) placing the dispersed slurry in a mixing tank, adding the remaining water, defoamer, emulsion, film-forming aid, and antifreeze agent in sequence, adjusting the speed to 650 r / min, and slowly stirring for 10 min to obtain a full-body texture coating process imitating a non-full-body effect coating base material;

[0172] (3) Add quartz sand to the dispersed base material, adjust the speed to 400 r / min, and stir slowly for 5 minutes to obtain a base material for a full-body texture coating process that imitates a non-full-body effect coating.

[0173] Example 6

[0174] This embodiment provides a full-body sand-wall textured coating that simulates a non-throughout effect. The difference from Example 1 is that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Preparation Example 2, and the other steps are exactly the same as Example 1.

[0175] Example 7

[0176] This embodiment provides a full-body sand-wall textured coating that simulates a non-throughout effect. The difference from Example 1 is that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Preparation Example 3, and the other steps are exactly the same as Example 1.

[0177] Example 8

[0178] This embodiment provides a full-body sand-wall textured coating that simulates a non-throughout effect. The difference from Example 1 is that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Preparation Example 4, and the other steps are exactly the same as Example 1.

[0179] Example 9

[0180] This embodiment provides a full-body sand-wall textured coating that simulates a non-throughout effect. The difference from Example 1 is that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Preparation Example 5, and the other steps are exactly the same as Example 1.

[0181] Comparative Examples 1 to 3

[0182] Comparative Examples 1 to 3 provide three formulations of sand-wall textured coatings. The coatings in each embodiment include the components shown in Table 2 below by weight:

[0183] Table 2

[0184]

[0185]

[0186] In Table 2, the emulsion provided in Comparative Example 1 is a polyacrylic acid emulsion; the emulsion provided in Comparative Example 2 is a polyacrylic acid emulsion; and the organic expanded perlite is the silane-modified wood fiber provided in Preparation Example 6.

[0187] Comparative Example 4

[0188] This comparative example provides a whole-body sand-wall-like textured coating, which differs from Example 1 in that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Comparative Preparation Example 1, and the other steps are completely consistent with Example 1.

[0189] Comparative Example 5

[0190] This comparative example provides a whole-body sand-wall textured coating, which differs from Example 1 in that the silane-modified wood fiber provided in Preparation Example 1 is replaced by the silane-modified wood fiber provided in Comparative Preparation Example 2, and the other steps are completely consistent with Example 1.

[0191] Comparative Example 6

[0192] This comparative example provides a whole-body sand-wall-like textured coating, which differs from Example 1 in that the organic expanded perlite provided in Preparation Example 6 is replaced by the organic expanded perlite provided in Comparative Preparation Example 3, and the other steps are completely consistent with Example 1.

[0193] Comparative Example 7

[0194] This comparative example provides a whole-body sand-wall-like textured coating, which differs from Example 1 in that the organic expanded perlite provided in Preparation Example 6 is replaced by the organic expanded perlite provided in Comparative Preparation Example 4, and the other steps are completely consistent with Example 1.

[0195] Comparative Example 8

[0196] This comparative example provides a whole-body sand-wall-like textured coating, which differs from Example 1 in that the organic expanded perlite provided in Preparation Example 6 is replaced by the organic expanded perlite provided in Comparative Preparation Example 4, and the other steps are completely consistent with Example 1.

[0197] Test Example 1

[0198] Test samples: the whole body sand wall-like textured paints imitating non-whole body effects provided by Examples 1 to 9, and the whole body sand wall-like textured paints provided by Comparative Examples 1 to 8.

[0199] Test method:

[0200] (1) Cracking condition: Tested according to method 7.8 in JG / T 24-2018.

[0201] (2) Sand distribution: After the coating is dry, observe from a distance with side light to see if there is any uneven distribution of sand causing sandy spots.

[0202] (3) Whether there are any traces of knife jumping: After the coating is dry, observe whether there are any bulges.

[0203] (4) The degree of powder coating: After the coating dries, is there any white sand that is not coated and exposed?

[0204] The test results are shown in Table 3 below:

[0205] Table 3

[0206]

[0207]

[0208] As shown in Table 3, the present invention uses silane-modified wood fiber as a supporting material and organic expanded perlite as a suspended filler. The silane-modified wood fiber plays a supporting and surface energy-changing role in the coating, and the organic expanded perlite provides suspension and shrinkage prevention functions, so that the coating can form a film on the aggregate surface, and improve the fullness of the sand-walled porous surface, thereby achieving a change in the coating surface effect, so that when the texture process is used to construct the building base material, the surface effect achieved by rolling two coats of topcoat on the textured topcoat can be produced. The present invention prepares a full-body sand-walled texture coating process imitating non-full-body effect coating, which not only reduces the quality requirements for construction personnel, but also reduces the use of labor-related costs by changing its construction process steps, thereby avoiding unnecessary cost increases.

[0209] 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 by 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 full-body sand-wall textured paint that imitates a non-full-body effect, characterized in that: The coating comprises the following components by weight:

2. The non-throughout sand-wall textured paint according to claim 1, characterized in that: The polymer emulsion is selected from any one of polyacrylic acid emulsion, styrene acrylic resin emulsion, acetyl acrylic resin emulsion, cyclopropyl acrylic resin emulsion or silicone acrylic resin emulsion, or a combination of at least two thereof.

3. The non-throughout sand-wall textured paint according to claim 1, characterized in that: The silane-modified wood fiber is a wood fiber modified by a long carbon chain silane coupling agent; Preferably, the long carbon chain silane coupling agent is selected from C12-C18 alkyl trimethoxy silane; Preferably, the long carbon chain silane coupling agent is selected from any one of dodecyltrimethoxysilane, tetradecyltrimethoxysilane, hexadecyltrimethoxysilane or octadecyltrimethoxysilane, or a combination of at least two thereof, preferably hexadecyltrimethoxysilane.

4. The non-throughout sand-wall textured paint according to claim 1 or 3, characterized in that: The silane-modified wood fiber is prepared by the following steps: (a) soaking the wood fiber in water and then washing it with ethanol; (b) placing the wood fiber treated in step (a) in a modification liquid for ultrasonic treatment, washing with ethanol, and drying to obtain the silane-modified wood fiber; the modification liquid comprises ethanol, ammonia water, tetraethyl orthosilicate and a long carbon chain silane coupling agent; Preferably, in step (a), the soaking temperature is 30-40° C., and the soaking time is 15-18 hours; Preferably, in step (a), the number of cleaning is at least 2 times; Preferably, in step (b), the volume ratio of ethanol, ammonia water, tetraethyl orthosilicate and long carbon chain silane coupling agent is 100:(1-3):(1-3):(0.5-1.5); Preferably, in step (b), the mass percentage of ammonia in the ammonia water is 20-25%; Preferably, in step (b), the temperature of the ultrasonic treatment is 30-50° C., the power of the ultrasonic treatment is 1500-3000 W, and the time of the ultrasonic treatment is 3-5 h; Preferably, in step (b), the drying temperature is 100-110° C., and the drying time is 4-6 hours.

5. The non-throughout sand-wall textured paint according to claim 1, characterized in that: The organic expanded perlite comprises, from the inside to the outside, an expanded perlite and talcum powder inner core, a modifier middle layer and a paraffin outer layer; Preferably, the modifier is selected from any one or a combination of at least two of maleic anhydride, stearic acid or titanate; Preferably, the mass ratio of the expanded perlite, talc, modifier and paraffin is (2-3):(8-10):(0.1-0.2):(1-2).

6. The non-throughout sand-wall textured paint according to claim 1 or 5, characterized in that: The organic expanded perlite is prepared by the following steps: The expanded perlite and talc are mixed and heated, and a modifier is added to perform a first mixing and stirring to obtain an intermediate mixed product; paraffin is added to the intermediate mixed product to perform a second mixing and stirring to obtain the organic expanded perlite; Preferably, the heating temperature is 50-70°C; Preferably, the rotation speed of the first mixing and stirring is 2000-3000 r / min, and the time of the first mixing and stirring is 5-10 min; Preferably, the rotation speed of the second mixing and stirring is 2000-3000 r / min, and the time of the second mixing and stirring is 20-30 min.

7. The non-throughout sand-wall textured paint according to claim 1, characterized in that: The auxiliary agent includes any one or a combination of at least two of a pH regulator, a film-forming auxiliary agent, an antifreeze agent, a wetting agent, a dispersant, a defoaming agent or a bactericide; Preferably, the film-forming aid includes alcohol lipid twelve; Preferably, the antifreeze agent comprises propylene glycol; Preferably, the fungicide comprises a BIT fungicide and / or a MIT fungicide.

8. A method for preparing a non-throughout sand-wall textured paint according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: (1) mixing silane-modified wood fiber, organic expanded perlite, part of water and part of additives, and performing a first dispersion to obtain a slurry; (2) adding the remaining water, the remaining additives and the polymer emulsion to the slurry to perform a second dispersion to obtain a base material; (3) adding quartz sand to the base material and performing a third dispersion to obtain the non-throughout sand-wall textured coating.

9. The method for preparing the non-throughout sand-wall textured coating according to claim 8, characterized in that: In step (1), the water in the portion accounts for 40 to 50% of the total mass of the water; Preferably, in step (1), the auxiliary agents include a pH regulator, a wetting agent, a bactericide, a dispersant and a portion of a defoaming agent; Preferably, in step (1), the portion of the defoaming agent accounts for 40 to 50% of the total mass of the defoaming agent; Preferably, in step (1), the order of adding materials is: adding water, pH regulator, wetting agent, bactericide, dispersant, defoamer, organic expanded perlite and silane-modified wood fiber into a high-speed disperser in proportion; Preferably, in step (1), the rotation speed of the first dispersion is 1200-1500 r / min, and the time of the first dispersion is 30-40 min.

10. The method for preparing the non-throughout sand-wall textured coating according to claim 8, characterized in that: In step (2), the remaining additives include: part of the defoaming agent, the film-forming aid and the antifreeze agent; Preferably, in step (2), the order of adding materials is: adding the remaining water, the remaining defoaming agent, the polymer emulsion, the film-forming aid and the antifreeze agent to the slurry in proportion; Preferably, in step (2), the rotation speed of the second dispersion is 500-800 r / min, and the time of the second dispersion is 5-15 min; Preferably, in step (3), the rotation speed of the third dispersion is 300 to 500 r / min, and the time of the third dispersion is 2 to 8 min.

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