A waterborne one-component hammer art effect paint and a preparation method thereof

Abstract

The present application relates to a kind of water-based single-component hammer art effect paint and its preparation method, it relates to paint technical field, by weight parts, the water-based single-component hammer art effect paint includes the following components: 16.6-42.2 parts of water, 2.7-8.5 parts of auxiliary agent, 20-30 parts of pearl powder, 35-45 parts of organic film forming material.The present application provides a kind of water-based single-component hammer art effect paint, uses water-based single-component design, completely gives up the use of organic solvent, fundamentally eliminates the pollution of solvent volatilization to environment, meets national low emission index, is conducive to protecting ecological environment and human health.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and in particular to a water-based single-component hammered texture artistic effect coating and its preparation method. Background Technology

[0002] Hammered finish paint, renowned for its unique coating effect, presents a pattern on its surface resembling the marks left by a hammer lightly striking a metal plate. This not only possesses artistic beauty but also cleverly conceals the unevenness of the casting surface while providing excellent protection. Due to its clear hammered texture, distinctive shape, and strong three-dimensional effect, this paint is widely used in various instruments, doors and windows, metal counters, machine tools, and other fields, making it an ideal choice for both decoration and protection.

[0003] However, traditional hammer finish paints typically use a two-component formulation and require the addition of solvents with different evaporation rates to promote texture formation. This practice not only has a significant impact on the environment, but two-component paints also have relatively high requirements for application conditions, increasing the difficulty of application.

[0004] Therefore, there is an urgent need for a single-component hammered texture effect paint that does not require the addition of solvents, in order to meet the national low-emission standards. Summary of the Invention

[0005] To address the above problems, this invention provides a water-based single-component hammered texture artistic effect coating and its preparation method.

[0006] In a first aspect, the present invention provides a water-based one-component hammered texture effect coating, wherein the water-based one-component hammered texture effect coating comprises the following components by weight: 16.6-42.2 parts water, 2.7-8.5 parts additives, 20-30 parts pearlescent powder, and 35-45 parts organic film-forming substances; The pearlescent powder is composed of two pearlescent powders, A and B, with different particle sizes. The pearlescent powder A has a particle size of 5-25 μm, and the pearlescent powder B has a particle size of 20-80 μm. The additives include wetting agents, dispersants, and defoamers; The HLB value of the wetting agent is 15~19; The dispersant has an HLB value of 15-19; The HLB value of the defoamer is 1~3; The defoamer includes non-silicone defoamers and silicone defoamers; the non-silicone defoamer is a mineral oil defoamer, and the silicone defoamer is polydimethylsiloxane.

[0007] Furthermore, by weight, the water-based single-component hammered texture effect coating comprises the following components: 29.4 parts water, 5.6 parts additives, 40 parts organic film-forming substances, and 25 parts pearlescent powder.

[0008] Further, the additives comprise the following components by weight: 0.2-0.4 parts wetting agent, 0.5-1.2 parts dispersant, 0.1-0.5 parts non-silicone defoamer, 0.1-0.5 parts silicone defoamer, 0.2-0.8 parts thickener, 1-3 parts film-forming aid, 0.5-1.5 parts antifreeze, and 0.2-0.5 parts preservative. Further, the wetting agent comprises polyoxyethylene ether or a derivative thereof, and the dispersant is a hydrophilic sodium polycarboxylate dispersant.

[0009] Furthermore, the non-silicone defoamer is a mineral oil defoamer, and the silicone defoamer is polydimethylsiloxane.

[0010] Furthermore, the thickener comprises hydrophobically modified hydroxyethyl cellulose, and the preservative comprises isothiazolinones and benzimidazole.

[0011] Furthermore, the film-forming aid includes a hexadecyl alcohol ester having a diester structure, and the antifreeze agent is polyethylene glycol.

[0012] Furthermore, the pearlescent powder is composed of two pearlescent powders A and B with different particle sizes, wherein the pearlescent powder A has a particle size of 5-25 μm and the pearlescent powder B has a particle size of 20-80 μm; the organic film-forming substance is a styrene-acrylic emulsion, including at least one of a copolymer emulsion of styrene and isooctyl acrylate and a copolymer emulsion of styrene and butyl acrylate.

[0013] Secondly, the present invention provides a method for preparing the water-based single-component hammered texture artistic effect coating according to any one of the first aspects, the preparation method comprising the following steps: The water and thickener are stirred and mixed to obtain the first mixture; Add dispersant, wetting agent, antifreeze, mineral oil defoamer and film-forming aid to the first mixture and stir to obtain the second mixture; Pearl powder is added to the second mixture and stirred to obtain the third mixture; Organic film-forming substances and silicone defoamers are added to the third mixture and stirred and mixed. Then, preservatives are added and stirred and mixed to obtain the water-based single-component hammered texture artistic effect coating.

[0014] The technical solutions provided in the embodiments of the present invention have at least the following advantages compared with the prior art: This invention provides a water-based, single-component hammered texture artistic effect coating and its preparation method. This invention provides a water-based, single-component hammered texture artistic effect coating that completely eliminates the use of organic solvents, fundamentally eliminating the environmental pollution caused by solvent volatilization, meeting national low-emission standards, and is beneficial to protecting the ecological environment and human health. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic flowchart illustrating a method for preparing a water-based, single-component hammered texture artistic effect coating according to an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0020] The existing hammered texture effect coatings mainly have the following problems: 1. High VOC content; 2. Expensive raw materials for silver paste or silver powder, resulting in high production costs, which limits the application of hammered paint; 3. Requires two-component performance to achieve better results.

[0021] Therefore, while ensuring that the hammered paint has a strong three-dimensional effect, it is urgent to develop a water-based, single-component hammered paint that does not contain silver paste or silver powder and has a wide range of applications.

[0022] The inventor discovered the cause through experiments, and the analysis is as follows: 1. The high VOC is due to the introduction of solvents. During the drying and film formation process of the coating, the different evaporation rates of the solvent and water cause differences in surface tension, which in turn generate Bénard vortices. 2. Adding silver paste or silver powder results in a three-dimensional hammered texture by causing uneven precipitation with pigments and fillers due to its higher specific gravity.

[0023] 3. Two-component resins are used because, in order to make the Bénard vortex more pronounced, the selected resins generally have poorer properties, so they need to be combined with a curing agent to enhance their performance.

[0024] In a first aspect, the present invention provides a water-based single-component hammered texture effect coating, wherein, by weight, the water-based single-component hammered texture effect coating comprises the following components: 16.6-42.2 parts water, 2.7-8.5 parts additives, 20-30 parts pearlescent powder, and 35-45 parts organic film-forming substances; The pearlescent powder is composed of two pearlescent powders, A and B, with different particle sizes. The pearlescent powder A has a particle size of 5-25 μm, and the pearlescent powder B has a particle size of 20-80 μm. The additives include wetting agents, dispersants, and defoamers; The HLB value of the wetting agent is 15~19; The dispersant has an HLB value of 15-19; The HLB value of the defoamer is 1~3; The defoamer includes non-silicone defoamers and silicone defoamers; the non-silicone defoamer is a mineral oil defoamer, and the silicone defoamer is polydimethylsiloxane.

[0025] This invention provides a water-based, single-component hammered texture artistic effect coating. It adopts a water-based, single-component design, completely eliminating the use of organic solvents and fundamentally eliminating the environmental pollution caused by solvent volatilization. It meets national low-emission standards and is beneficial to protecting the ecological environment and human health.

[0026] The specific principle is as follows: 1. The Bénard vortex is essentially caused by inconsistent surface tension. However, this inconsistency doesn't necessarily require a difference in evaporation rates between the solvent and water. It can be achieved by adding additives with extremely low surface tension ratios to the formulation, thus creating a textured surface. This allows for the selection of high-performance resins, eliminating the need for a curing agent.

[0027] This invention improves the hydrophilicity of the formulation by selecting dispersants and wetting agents with higher HLB values; while for those with extremely low surface area, silicone-based defoamers can be selected and used in combination with defoamers with poor compatibility. During use, an oil shrinkage phenomenon may occur, resulting in inconsistent levels of hydrophilicity.

[0028] 2. A three-dimensional effect can be achieved through the optical properties of pearlescent powder itself—the viewing angle chromatic aberration effect. The viewing angle chromatic aberration effect refers to the perception of different colors depending on the observer's angle. Its mechanism is that when light undergoes multiple refractions, reflections, partial absorption, and partial transmissions at transparent interfaces with different refractive indices, interference inevitably occurs between parallel reflected light rays. Furthermore, when pearlescent powders of different particle sizes are combined, altering the path of light within the paint film, a stronger three-dimensional visual effect can be achieved. Adding a unique rubbing application process can further enhance the three-dimensional effect of the pearlescent powder.

[0029] This invention selects 5-25um and 30-80um silver-white pearlescent powders for combination, and then uses a stainless steel scrubbing board to rub the powders in a circular motion to make the pearlescent powders unevenly distributed, thereby enhancing the Bénard vortex phenomenon. Furthermore, under the above principle 1 scheme, the resulting oil shrinkage will cause the pearlescent powders to form patterns similar to those formed when a metal plate is struck by a hammer.

[0030] In some specific embodiments, the water-based single-component hammered texture effect coating comprises the following components by weight: 16.6-42.2 parts water, 2.7-8.5 parts additives, 20-30 parts pearlescent powder, and 35-45 parts organic film-forming substances.

[0031] In some specific embodiments, the additives include the following components by weight: 0.2-0.4 parts wetting agent, 0.5-1.2 parts dispersant, 0.1-0.5 parts non-silicone defoamer, 0.1-0.5 parts silicone defoamer, 0.2-0.8 parts thickener, 1-3 parts film-forming aid, 0.5-1.5 parts antifreeze, and 0.2-0.5 parts preservative. In some specific embodiments, the wetting agent includes polyoxyethylene ether or a derivative thereof, wherein HLB≥15 is preferably Clariant LCN407; The dispersant is a hydrophilic sodium polycarboxylate dispersant, preferably Sanopco SN-5040. The non-silicone defoamer is a mineral oil defoamer, preferably NXZ; The silicone-based defoamer is polydimethylsiloxane, preferably BYK-019; The thickener includes hydrophobically modified hydroxyethyl cellulose; The preservatives and antifungal agents include isothiazolinones and benzimidazole; The film-forming aid includes a hexadecyl alcohol ester having a diester structure; The antifreeze is polyethylene glycol.

[0032] In some specific embodiments, the pearlescent powder is composed of two pearlescent powders A and B with different particle sizes, and the weight ratio of pearlescent powder A to pearlescent powder B is 1:2; the particle size of pearlescent powder A is 5-25 μm, and the particle size of pearlescent powder B is 20-80 μm; the organic film-forming substance is a styrene-acrylic emulsion, including at least one of a copolymer emulsion of styrene and isooctyl acrylate and a copolymer emulsion of styrene and butyl acrylate.

[0033] In some specific embodiments, the method of using the water-based single-component hammered texture artistic effect coating provided by the present invention includes the following process: The pearlescent powder is evenly sprayed onto the substrate containing the primer using a spray gun. Then, it is rubbed in a circular motion with a stainless steel scrubbing tool. This step, called the "powder-turning" process, causes the pearlescent powder to be unevenly distributed. At this point, the silicone defoamer will experience an oil shrinkage phenomenon, resulting in uneven thickness and gloss of the pearlescent powder, creating a three-dimensional effect. Then, when it is 80-90% dry, a light circular "0" motion is performed again. This step, called the "compacting" process, is performed. At this point, the oil shrinkage phenomenon is very weak. Therefore, this step is to reduce the scrubbing marks caused by the first step and improve the feel.

[0034] Secondly, based on the same inventive concept, this invention provides a method for preparing the water-based single-component hammered texture artistic effect coating as described in any of the first aspects, such as... Figure 1 As shown, the preparation method includes the following steps: The water and thickener are stirred and mixed to obtain the first mixture; Add dispersant, wetting agent, antifreeze, mineral oil defoamer and film-forming aid to the first mixture and stir to obtain the second mixture; Pearl powder is added to the second mixture and stirred to obtain the third mixture; Organic film-forming substances and silicone defoamers are added to the third mixture and stirred and mixed. Then, preservatives are added and stirred and mixed to obtain the water-based single-component hammered texture artistic effect coating.

[0035] The preparation method of the water-based single-component hammered texture artistic effect coating provided in this invention embodiment is simple, requires no additional specific equipment, and is suitable for mass industrial production. Furthermore, this preparation method is based on the water-based single-component hammered texture artistic effect coating described in any one of the first aspects, and therefore possesses at least the beneficial effects of the water-based single-component hammered texture artistic effect coating described in any one of the first aspects, which will not be elaborated further here.

[0036] In some specific embodiments, for example, the above preparation method includes the following processes: Step S1: Add 29.4 parts water and 0.5 parts thickener to a container and stir at 500-800 rpm for 3-5 minutes; Step S2: Add 0.85 parts dispersant, 0.3 parts wetting agent, 1 part antifreeze, 0.3 parts mineral oil defoamer, and 2 parts film-forming aid; stir at 500-800 rpm for 3-5 minutes; Step S3: Step S5: Add 8.3 parts of 5-25um pearl powder and 16.7 parts of 20-80um pearl powder and stir at 1000-1500rpm for 15-25min to obtain a mixed solution; Step S4: Add 40 parts of emulsion and 0.3 parts of silicone defoamer, and stir at 500-800 rpm for 3-5 minutes; Step S5: Add 0.35 parts of preservative and antifungal agent to obtain the finished product.

[0037] It should be noted that, unless otherwise specified or described, the raw materials involved in the water-based single-component hammered texture artistic effect coating and its preparation method provided in the embodiments of the present invention can be directly made from commercially available products or by using existing publicly disclosed preparation methods; at the same time, unless otherwise specified or described, the steps and parameters involved can be carried out according to the existing coating processing technology or directly using existing equipment, and will not be described in detail in this document.

[0038] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Experimental methods in the following embodiments, unless otherwise specified, are generally performed according to national standards. If no corresponding national standard exists, then generally accepted international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0039] The main raw material information involved in the following examples and comparative examples is as follows: Thickener: Specifically named 250HBR, purchased from Ashland.

[0040] Film-forming aid: specifically hexadecyl alcohol ester, purchased from Qilu Eastman Fine Chemicals Co., Ltd.

[0041] Wetting agent: specifically LCN407, purchased from Clariant.

[0042] Dispersant: SN-5040, purchased from Sanopco.

[0043] Non-silicone defoamer: specifically named NXZ, purchased from the manufacturer Sanopco.

[0044] Silicone-based defoamer: specifically named BYK-019, purchased from BYK.

[0045] Preservative and mildew inhibitor: specifically named MBS 5050, purchased from Guangzhou Duwei Trading Co., Ltd.

[0046] Antifreeze: The specific name is polyethylene glycol, purchased from Clariant.

[0047] Organic film-forming substance: its specific name is RS-706, purchased from the manufacturer Badifu.

[0048] Pearlescent powder A: Its specific name is QC6120 Crystal White, purchased from Guangzhou United Materials Technology Co., Ltd.

[0049] Pearlescent powder B: Its specific name is QC6150, purchased from Guangzhou United Materials Technology Co., Ltd.

[0050] Example 1 This example provides a water-based, one-component hammered texture effect coating, which, by weight, comprises the following components: 29.4 parts water, 5.6 parts additives (specifically: 0.3 parts wetting agent, 0.85 parts dispersant, 0.3 parts non-silicone defoamer, 0.3 parts silicone defoamer, 0.5 parts thickener, 2 parts film-forming aid, 0.1 parts preservative and 1 part antifreeze), 40 parts organic film-forming substance, and 25 parts pearlescent powder (specifically 8.3 parts pearlescent powder A and 16.7 parts pearlescent powder B).

[0051] The preparation method of the above-mentioned water-based single-component hammered texture artistic effect coating includes the following steps: Step S1: Add 29.4 parts water and 0.5 parts thickener to a container and stir at 500-800 rpm for 3-5 minutes; Step S2: Add 0.85 parts dispersant, 0.3 parts wetting agent, 1 part antifreeze, 0.3 parts mineral oil defoamer, and 2 parts film-forming aid; stir at 500-800 rpm for 3-5 minutes; Step S3: Step S5: Add 8.3 parts of 5-25um pearl powder and 16.7 parts of 20-80um pearl powder and stir at 1000-1500rpm for 15-25min to obtain a mixed solution; Step S4: Add 40 parts of emulsion and 0.3 parts of silicone defoamer, and stir at 500-800 rpm for 3-5 minutes; Step S5: Add 0.35 parts of preservative and antifungal agent to obtain the finished product.

[0052] During application, the pearlescent powder is evenly sprayed onto the substrate containing the primer using a spray gun. Then, a stainless steel scrubbing tool is used to apply it in circular motions ("0"), a step called the "powdering" process. This causes uneven distribution of the pearlescent powder. At this point, the silicone defoamer will experience oil shrinkage, resulting in uneven thickness and gloss of the pearlescent powder, creating a three-dimensional effect. Then, when it is 80-90% dry, a light circular "0" motion is applied again. This step is called the "compacting" process. At this point, the oil shrinkage is much weaker. Therefore, this step is to reduce the scrubbing marks caused by the first step and improve the feel.

[0053] Example 2 This example provides a water-based, one-component hammered texture effect coating, which, by weight, comprises the following components: 16.6 parts water, 8.5 parts additives (specifically: 0.4 parts wetting agent, 1.2 parts dispersant, 0.5 parts non-silicone defoamer, 0.5 parts silicone defoamer, 0.8 parts thickener, 3 parts film-forming aid, 0.35 parts preservative and 1.5 parts antifreeze), 45 parts organic film-forming substance, and 30 parts pearlescent powder (specifically 10 parts pearlescent powder A and 20 parts pearlescent powder B).

[0054] The preparation method of the above-mentioned water-based single-component hammered texture artistic effect coating includes the following steps: Step S1: Add 42.2 parts water and 0.8 parts thickener to a container and stir at 500-800 rpm for 3-5 minutes; Step S2: Add 1.2 parts dispersant, 0.4 parts wetting agent, 1.5 parts antifreeze, 0.5 parts mineral oil defoamer, and 3 parts film-forming aid; stir at 500-800 rpm for 3-5 minutes; Step S3: Step S5: Add 10 parts of 5-25um pearl powder and 20 parts of 20-80um pearl powder and stir at 1000-1500rpm for 15-25min to obtain a mixed solution; Step S4: Add 45 parts of emulsion and 0.5 parts of silicone defoamer, and stir at 500-800 rpm for 3-5 minutes; Step S5: Add 0.5 parts of preservative and antifungal agent to obtain the finished product.

[0055] During application, the pearlescent powder is evenly sprayed onto the substrate containing the primer using a spray gun. Then, a stainless steel scrubbing tool is used to apply it in circular motions ("0"), a step called the "powdering" process. This causes uneven distribution of the pearlescent powder. At this point, the silicone defoamer will experience oil shrinkage, resulting in uneven thickness and gloss of the pearlescent powder, creating a three-dimensional effect. Then, when it is 80-90% dry, a light circular "0" motion is applied again. This step is called the "compacting" process. At this point, the oil shrinkage is much weaker. Therefore, this step is to reduce the scrubbing marks caused by the first step and improve the feel.

[0056] Example 3 This example provides a water-based, one-component hammered texture effect coating, which, by weight, comprises the following components: 42.2 parts water, 2.7 parts additives (specifically: 0.2 parts wetting agent, 0.5 parts dispersant, 0.1 parts non-silicone defoamer, 0.1 parts silicone defoamer, 0.2 parts thickener, 1 part film-forming aid, 0.2 parts preservative and 0.5 parts antifreeze), 35 parts organic film-forming substance, and 20 parts pearlescent powder (specifically 6.7 parts pearlescent powder A and 13.3 parts pearlescent powder B).

[0057] The preparation method of the above-mentioned water-based single-component hammered texture artistic effect coating includes the following steps: Step S1: Add 42.2 parts water and 0.2 parts thickener to a container and stir at 500-800 rpm for 3-5 minutes; Step S2: Add 0.5 parts dispersant, 0.2 parts wetting agent, 0.5 parts antifreeze, 0.1 parts mineral oil defoamer, and 1 part film-forming aid; stir at 500-800 rpm for 3-5 minutes; Step S3: Step S5: Add 6.7 parts of 5-25um pearl powder and 13.3 parts of 20-80um pearl powder and stir at 1000-1500rpm for 15-25min to obtain a mixed solution; Step S4: Add 35 parts of emulsion and 0.1 parts of silicone defoamer, and stir at 500-800 rpm for 3-5 minutes; Step S5: Add 0.2 parts of preservative and antifungal agent to obtain the finished product.

[0058] During application, the pearlescent powder is evenly sprayed onto the substrate containing the primer using a spray gun. Then, a stainless steel scrubbing tool is used to apply it in circular motions ("0"), a step called the "powdering" process. This causes uneven distribution of the pearlescent powder. At this point, the silicone defoamer will experience oil shrinkage, resulting in uneven thickness and gloss of the pearlescent powder, creating a three-dimensional effect. Then, when it is 80-90% dry, a light circular "0" motion is applied again. This step is called the "compacting" process. At this point, the oil shrinkage is much weaker. Therefore, this step is to reduce the scrubbing marks caused by the first step and improve the feel.

[0059] Comparative Example 1 This example provides a coating, which differs from Example 1 only in that: in step S2, the dispersant and wetting agent is oleophilic, specifically Rohm and Haas hydrophobic 731A is selected as the dispersant, and BYK 349 is selected as the wetting agent; the remaining steps and parameters are the same.

[0060] Comparative Example 2: In step S4 of Example 1, a hydrophilic silicone defoamer was selected, specifically NOPTAM 2154 from Nopco; the remaining steps and parameters were the same.

[0061] Comparative Example 3: In step S3 of Example 1, all pearlescent powders used were 5-25µm pearlescent powders; the remaining steps and parameters were the same.

[0062] Comparative Example 4: In step S3 of Example 1, all pearlescent powders were 20-80µm pearlescent powders; the remaining steps and parameters were the same.

[0063] Comparative Example 5: In step S3 of Example 1, heavy calcium carbonate powder was used, and the remaining steps and parameters were the same.

[0064] Comparative Example 6: In the construction process of Example 1, the rubbing process was not performed after spraying, and the remaining steps and parameters were the same.

[0065] Test case This example demonstrates the performance testing of the products provided in the above embodiments and comparative examples. The 3D effect and hammer texture effect were scored, with higher scores awarded for effects closer to those of the two-component hammer texture paint. The two-component hammer texture paint was defined as scoring 8 points. The harmful substance content was tested according to GB 18582-2020 "Limits of Harmful Substances in Wall Coatings for Buildings," and the freeze-thaw and low-temperature film-forming tests were conducted according to GB / T 9756-2018 "Synthetic Resin Emulsion Interior Wall Coatings." The test results are shown in Table 1.

[0066] Table 1

[0067] As can be seen from Example 1 and Comparative Examples 1 and 2 in Table 1, when the hydrophilic and oleophilic materials in the formulation are biased in one direction, there is no oil shrinkage phenomenon, resulting in a very weak hammer texture effect, and the rubbing process can only bring a part of the three-dimensional effect.

[0068] As can be seen from Comparative Example 3 / 4, if only one type of pearlescent powder is used, the three-dimensional effect will be reduced. As can be seen from Comparative Example 5, when there is no pearlescent powder, the three-dimensional and hammered texture effects are completely lost.

[0069] As can be seen from Comparative Example 6, when the rubbing process is not performed, it is difficult for the pearlescent powder to achieve a good three-dimensional and hammered texture effect by relying solely on the "oil shrinkage" process.

[0070] In summary, the embodiments of the present invention provide a water-based single-component hammered texture artistic effect coating and its preparation method, which can solve the problems of existing coatings on the market, such as high VOC, expensive raw materials for silver paste or silver powder, high production costs, which limit the application field of hammered texture paint, and the need for two-component performance to achieve better performance.

[0071] Various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of the invention; therefore, it should be considered that the range description has specifically disclosed all possible subranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the range referred to.

[0072] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A water-based, single-component hammered texture artistic effect coating, characterized in that, By weight, the water-based single-component hammered texture effect coating comprises the following components: 16.6-42.2 parts water, 2.7-8.5 parts additives, 20-30 parts pearlescent powder, and 35-45 parts organic film-forming substances; The pearlescent powder is composed of two pearlescent powders, A and B, with different particle sizes. The pearlescent powder A has a particle size of 5-25 μm, and the pearlescent powder B has a particle size of 20-80 μm. The additives include wetting agents, dispersants, and defoamers; The HLB value of the wetting agent is 15~19; The dispersant has an HLB value of 15-19; The HLB value of the defoamer is 1~3; The defoamer includes non-silicone defoamers and silicone defoamers; the non-silicone defoamer is a mineral oil defoamer, and the silicone defoamer is polydimethylsiloxane.

2. The water-based single-component hammered texture artistic effect coating according to claim 1, characterized in that, By weight, the water-based single-component hammered texture effect coating comprises the following components: 29.4 parts water, 5.6 parts additives, 40 parts organic film-forming substances, and 25 parts pearlescent powder.

3. The water-based single-component hammered texture artistic effect coating according to claim 1, characterized in that, The additives comprise the following components by weight: 0.2-0.4 parts wetting agent, 0.5-1.2 parts dispersant, 0.1-0.5 parts non-silicone defoamer, 0.1-0.5 parts silicone defoamer, 0.2-0.8 parts thickener, 1-3 parts film-forming aid, 0.5-1.5 parts antifreeze, and 0.2-0.5 parts preservative.

4. The water-based single-component hammered texture artistic effect coating according to claim 3, characterized in that, The wetting agent includes polyoxyethylene ether or its derivatives; the dispersant is a hydrophilic sodium polycarboxylate dispersant.

5. The water-based single-component hammered texture artistic effect coating according to claim 3, characterized in that, The thickener includes hydrophobically modified hydroxyethyl cellulose, and the preservative includes isothiazolinones and benzimidazole.

6. The water-based single-component hammered texture artistic effect coating according to claim 3, characterized in that, The film-forming aid includes a hexadecyl alcohol ester having a diester structure, and the antifreeze agent is polyethylene glycol.

7. The water-based single-component hammered texture artistic effect coating according to claim 1, characterized in that, The organic film-forming substance is a styrene-acrylic emulsion, including at least one of a copolymer emulsion of styrene and isooctyl acrylate and a copolymer emulsion of styrene and butyl acrylate.

8. A method for preparing a water-based single-component hammered texture artistic effect coating according to any one of claims 3 to 7, characterized in that, The preparation method includes the following steps: The water and thickener are stirred and mixed to obtain the first mixture; Add dispersant, wetting agent, antifreeze, mineral oil defoamer and film-forming aid to the first mixture and stir to obtain the second mixture; Pearl powder is added to the second mixture and stirred to obtain the third mixture; Organic film-forming substances and silicone defoamers are added to the third mixture and stirred and mixed. Then, preservatives are added and stirred and mixed to obtain the water-based single-component hammered texture artistic effect coating.

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