Stone-like edge polishing effect paint and preparation method thereof

Abstract

This invention belongs to the field of composition technology, specifically relating to a stone-like edge-polishing effect coating and its preparation method. The coating is formed by the compatibility of various compositions, providing a visual and / or tactile effect that mimics the polished edges of stone. The composition includes 25-35 parts acrylic emulsion, 10-15 parts opaque polymer, 8-12 parts quartz powder, 8-12 parts calcium carbonate, 3-7 parts potassium silicate, 0.8-1.5 parts film-forming agent, 0.4-0.6 parts cellulose, 0.3-0.8 parts antifreeze agent, 0.1-0.5 parts dispersant, and 0 parts defoamer. 0.3-0.8 parts, bentonite 0.1-0.4 parts, preservative 0.1-0.3 parts, stabilizer 0.1-0.3 parts. This coating is applied to the deep grooves of the stone-like coating. It has the ability to cover the color and pattern of the stone-like coating to a certain extent, making it appear faint and hazy. It also has a rough texture similar to the surface after polishing, which can effectively imitate the effect of polishing. It can save the polishing of the stone-like coating in the deep grooves, and provides a high degree of simulation, greatly reducing labor time, reducing costs, and ensuring durability.

Description

Technical Field

[0001] This invention belongs to the field of composition technology, specifically relating to a stone-like edge-grinding coating and its preparation method. Background Technology

[0002] The use of stone-like coatings, such as real stone paint and multi-color paint, on building exteriors is increasing, and the market's demand for simulation is also constantly rising. Various techniques have emerged to make stone-like coatings more closely resemble natural rock slabs in appearance. One important technique is the use of deep grooves to mimic the effect of natural granite or marble slabs pieced together on a wall. Natural rock slabs have a groove along each of their four edges; after rough sanding, the color and pattern are not as vibrant and clear as the front of the slab, creating a hazy visual effect. Therefore, the pieced-together panels have a very layered look. Currently, creating deep grooves for stone-like coatings is very time-consuming. After the stone-like coating is applied, the grooves need to be sanded, which is extremely time-consuming and increases costs. If not sanded, the grooves will have the same color effect as the front of the stone-like paint, lacking depth and simulation. Summary of the Invention

[0003] In order to at least solve the problems existing in the background art, the present invention provides a stone-like edge-grinding effect coating and its preparation method, which enables the coating to cover the color and pattern of the stone-like coating to a certain extent, making it appear faint and hazy, and has a rough touch similar to the surface after polishing, so that it can effectively imitate the effect of polishing.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a stone-like edge-grinding coating, which is formed by the fusion of a composition and provides a visual and / or tactile effect that mimics the edge-grinding of stone.

[0005] Preferably, the composition comprises, by weight parts: 25-35 parts acrylic emulsion, 10-15 parts opaque polymer, 8-12 parts quartz powder, 8-12 parts calcium carbonate, 3-7 parts potassium silicate, 0.8-1.5 parts film-forming agent, 0.4-0.6 parts cellulose, 0.3-0.8 parts antifreeze, 0.1-0.5 parts dispersant, 0.3-0.8 parts defoamer, 0.1-0.4 parts bentonite, 0.1-0.3 parts preservative, 0.1-0.3 parts stabilizer, and the remaining component is deionized water.

[0006] Preferably, the opaque polymer is a hollow-structured aqueous acrylic emulsion, the dispersant is type 1124 or a hydrophilic modified copolycarboxylate, the film-forming agent is dodecyl alcohol ester, the antifreeze agent is propylene glycol, the defoamer is type 1340 or mineral oil, the preservative is type Tor ACTICIDE RS CONC or an isothiazolinone compound, and the stabilizer is type Clariant SPS or a quaternary ammonium compound.

[0007] Preferably, the acrylic emulsion is RS-996AD type, the quartz powder is 100 mesh, the calcium carbonate is GY-116A type, the potassium silicate is WJ-5536 type, the cellulose is 250HBR type, the bentonite is BENAQUA 4000 type, and the hollow structure waterborne acrylic emulsion is H400 type.

[0008] This application also provides a method for preparing a stone-like edge-grinding effect coating, used to prepare the stone-like edge-grinding effect coating as described in any of the above claims, comprising the following steps:

[0009] S1. Add the antifreeze, bentonite, dispersant, and defoamer to the deionized water in sequence while stirring at a speed of 1200-1500 rpm for 10-15 minutes until the mixture is homogeneous and the liquid is obtained.

[0010] S2. Add calcium carbonate, quartz powder, and cellulose sequentially to the liquid obtained in S1 while stirring at a speed of 1200-1500 rpm for 25-30 minutes to obtain a slurry.

[0011] S3. Add the acrylic emulsion, film-forming agent, opaque polymer emulsion, stabilizer, and potassium silicate sequentially to the slurry obtained in S2 while stirring at a speed of 1000-1200 rpm for 10-15 minutes to obtain the coating.

[0012] This invention can be used to mimic the effect of polished edges of stone-like coatings.

[0013] The dispersant is 1124 or a hydrophilic modified copolymer carboxylate, and the defoamer is 1340 or mineral oil.

[0014] The preservative is trolactide RS CONC or an isothiazolinone compound.

[0015] The stabilizer is Clariant SPS or a quaternary ammonium compound.

[0016] The opaque polymer is a hollow-structured aqueous acrylic emulsion.

[0017] The acrylic emulsion used in this invention is a soap-free polymerized silicone-acrylic emulsion with a silicone content of 8%. It features strong adhesion to the substrate, high bonding strength, excellent chemical resistance and weather resistance, and does not yellow. For example, BADF RS-996AD.

[0018] The potassium silicate used in this invention is a stable inorganic modified potassium silicate with good water resistance, excellent stability, and good adhesion to inorganic substrates. For example, Lotus Leaf Chemical WJ-5536.

[0019] The opaque polymer used in this invention is a water-based acrylic polymer with a hollow structure. The drying process allows for air coverage, improving the coating's hiding power, and it exhibits excellent compatibility with acrylic emulsions. For example, Wanhua H-400.

[0020] The bentonite used in this invention is a polymer-modified bentonite with excellent suspension and anti-sagging properties. For example, BENAQUA 4000.

[0021] The calcium carbonate used in this invention is heavy calcium carbonate with a particle size of 600 mesh. For example, Guangyuan Chemical GY-116A.

[0022] The quartz powder used in this invention is natural white quartz powder with a particle size of 100 mesh.

[0023] The cellulose used in this invention is hydroxyethyl cellulose ether, which has good viscosity stability and water retention, for example: Ashland 250HBR.

[0024] The antifreeze agent used in this invention is propylene glycol.

[0025] The film-forming agent used in this invention is 12-ol ester.

[0026] Other preferred components used in this invention include: dispersant: Dow 1124; defoamer: Sanopco 1340; stabilizer: Clariant SPS; preservative: Torr RSC CONC, etc., which have the characteristics of small dosage and large effect.

[0027] This application has the following beneficial effects:

[0028] This invention adds an opaque polymer to the formulation, which has excellent compatibility with acrylic emulsions and provides hiding power. Compared with titanium dioxide used in conventional coatings, it provides more uniform color coverage, giving the coating a uniform semi-transparent effect. The addition of inorganic materials such as quartz powder to the component system increases the roughness of the paint film, resulting in a certain visual and tactile roughness in the overall performance of the system. In addition, the addition of inorganic potassium silicate and other materials to the components, combined with the organic materials in the component system, shows high bonding strength and can combine with the inorganic fillers in the stone-like paint, greatly increasing adhesion and making the coating more durable.

[0029] The coating prepared in this application provides a visual and / or tactile effect that mimics the edge polishing of stone. It can cover the color and pattern of the stone-like coating to a certain extent, making it appear faint and hazy, and has a rough tactile feel similar to the surface after polishing. It can effectively imitate the effect of polishing, eliminating the need for polishing the stone-like coating at the deep grooves. When applied to the stone-like coating, the visual and tactile effects achieve the effect of real edge polishing, and its performance meets the requirements of JG / T24-2018 (Main Coatings and Coating Systems) standard. However, at least one of the comparative examples fails to meet the industry standard, resulting in poor hiding power, lack of roughness, and poor adhesion strength. Therefore, when brushed onto the stone-like coating, the visual and tactile effects are different from the effect of real edge polishing, and the simulation degree is low.

[0030] The components in this application exhibit synergistic effects, with synergistic efficacy exceeding that of simple additives.

[0031] This invention, when applied to the surface of faux stone coating, can cover the patterns and colors of the faux stone coating to a certain extent, giving it a hazy appearance, similar to the effect after polishing; in addition, the paint film has a certain roughness, mimicking the feel of rough polishing. Thus, both visually and tactilely, it is similar to the effect of polished faux stone coating, making the simulation of faux stone coating more realistic.

[0032] This application is a stone-like edge-grinding effect coating, which is mainly applied to stone-like paint. It can eliminate the need for grinding the deep grooves of the stone-like paint and provide a high degree of simulation, greatly reducing labor time and costs. This coating belongs to the field of architectural wall coatings, is a water-based coating, and is durable. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the embodiments. All components of the present application constitute a component system after being compatible.

[0034] Unless otherwise specified, the raw materials used in the embodiments and comparative examples of this application are all commercially available.

[0035] Example 1

[0036] A coating that mimics the edge-grinding effect of stone, made from a mixture of components.

[0037] The composition comprises, by weight, the following components:

[0038] Deionized water: 29.75 parts

[0039] Acrylic emulsion RS-996AD: 30 parts

[0040] Opaque polymer emulsion H-400: 12 parts

[0041] Calcium carbonate GY-116A: 10 parts

[0042] 10 parts of 100-mesh quartz powder

[0043] Potassium silicate WJ-5536: 5 parts

[0044] Film-forming agent: 1 part alcohol ester twelve

[0045] Antifreeze agent propylene glycol: 0.5 parts

[0046] Dispersant 1124: 0.5 parts

[0047] Cellulose 250HBR: 0.5 parts

[0048] Defoamer 1340: 0.3 parts

[0049] Bentonite BENAQUA 4000: 0.2 parts

[0050] Preservative RSC CONC: 0.15 parts

[0051] Stabilizer SPS: 0.1 parts.

[0052] In Example 1 above, the dispersant is model 1124 and can be replaced with a hydrophilic modified copolycarboxylate; the defoamer is model 1340 and can be replaced with mineral oil; the preservative is model Tor ACTICIDE RS CONC and can be replaced with an isothiazolinone compound; and the stabilizer is model Clariant SPS and can be replaced with a quaternary ammonium compound.

[0053] The method for preparing a stone-like edge-grinding effect coating as described in Example 1 includes the following steps:

[0054] S1. The antifreeze, bentonite, dispersant and foaming agent described in Example 1 are added to deionized water in sequence with stirring at a speed of 1200-1500 rpm for 10-15 minutes until the mixture is homogeneous and a liquid is obtained.

[0055] S2. Add the calcium carbonate, quartz powder and cellulose described in Example 1 sequentially to the liquid obtained in S1 while stirring at a speed of 1200-1500 rpm and disperse for 25-30 minutes to obtain a slurry.

[0056] S3. The acrylic emulsion, film-forming agent, opaque polymer emulsion, and stabilizer described in Example 1 are sequentially added to the slurry obtained in S2 under stirring. The stirring speed is 1000-1200 rpm, and the mixture is dispersed for 10-15 minutes to form the coating.

[0057] Example 2

[0058] The only difference between this embodiment and Example 1 is that the composition, by weight, includes the following components:

[0059] Deionized water: 23.75 parts

[0060] Acrylic emulsion RS-996AD: 33 parts

[0061] Opaque polymer emulsion H-400: 15 parts

[0062] Calcium carbonate GY-116A: 10 parts

[0063] 10 parts of 100-mesh quartz powder

[0064] Potassium silicate WJ-5536: 5 parts

[0065] Film-forming agent: 1 part alcohol ester twelve

[0066] Antifreeze agent propylene glycol: 0.5 parts

[0067] Dispersant 1124: 0.5 parts

[0068] Cellulose 250HBR: 0.5 parts

[0069] Defoamer 1340: 0.3 parts

[0070] Bentonite BENAQUA 4000: 0.2 parts

[0071] Preservative RSC CONC: 0.15 parts

[0072] Stabilizer SPS: 0.1.

[0073] Example 3

[0074] The only difference between this embodiment and Example 1 is that the composition, by weight, includes the following components:

[0075] Deionized water: 33.75 parts

[0076] Acrylic emulsion RS-996AD: 30 parts

[0077] Opaque polymer emulsion H-400: 10 parts

[0078] Calcium carbonate GY-116A: 10 parts

[0079] Quartz powder 100 mesh: 8 parts

[0080] Potassium silicate WJ-5536: 5 parts

[0081] Film-forming agent: 1 part alcohol ester twelve

[0082] Antifreeze agent propylene glycol: 0.5 parts

[0083] Dispersant 1124: 0.5 parts

[0084] Cellulose 250HBR: 0.5 parts

[0085] Defoamer 1340: 0.3 parts

[0086] Bentonite BENAQUA 4000: 0.2 parts

[0087] Preservative RSC CONC: 0.15 parts

[0088] Stabilizer SPS: 0.1 parts.

[0089] Comparative Example 1

[0090] The only difference between Comparative Example 1 and Example 1 is that the RS-996AD acrylic emulsion was replaced with the PRIMAL NW-5118 acrylic emulsion in the raw material components.

[0091] Comparative Example 2

[0092] The only difference between this comparative example and Example 1 is that the film-forming aid, alcohol ester twelve, is replaced with the film-forming agent, copovidone VA64 or alcohol ester sixteen, in the raw material components.

[0093] Comparative Example 3

[0094] The only difference between this comparative example and Example 1 is that the stabilizer SPS is replaced with tetradecyl dimethyl tertiary amine in the raw material components.

[0095] Comparative Example 4

[0096] The only difference between the comparative example and Example 1 is that quartz powder was removed from the raw material components.

[0097] Comparative Example 5

[0098] The only difference between this comparative example and Example 1 is that the acrylic emulsion is removed from the raw material components.

[0099] Comparative Example 6

[0100] The only difference between this comparative example and Example 1 is that the opaque polymer was removed from the raw material components.

[0101] Comparative Example 7

[0102] The only difference between this comparative example and Example 1 is that the stabilizer was removed from the raw material components.

[0103] Comparative Example 8

[0104] The only difference between this comparative example and Example 1 is that potassium silicate is removed from the raw material components.

[0105] Comparative Example 9

[0106] The only difference between this comparative example and Example 1 is that bentonite was removed from the raw material components.

[0107] Comparative Example 10

[0108] The only difference between this comparative example and Example 1 is that the dispersant is removed from the raw material components.

[0109] Comparative Example 11

[0110] The only difference between this comparative example and Example 1 is that calcium carbonate has been removed from the raw material components.

[0111] Comparative Example 12

[0112] The only difference between this comparative example and Example 1 is that the film-forming agent is removed from the raw material components.

[0113] Experimental Example 1

[0114] Test items: roughness, contrast ratio (coverage ability), and bond strength.

[0115] The test method involves brushing the coating of this application onto a stone-like coating, and testing the following items after drying.

[0116] 1. Roughness test method: direct measurement using a roughness measuring instrument; evaluation method refers to GB / T1031-2009 standard.

[0117] 2. The test method for the contrast ratio is to use a hiding power tester, and the evaluation shall be in accordance with the GB / T9755-2014 standard.

[0118] 3. Adhesion strength test method: use a pull-out test adhesive strength tester, and evaluate according to JG / T24-2018 (main coating and coating system) standard.

[0119] Test subjects: The coatings obtained in Examples 1-3 and Comparative Examples 1-12 were applied.

[0120] Experimental results: see Table 1.

[0121] Table 1. Test data for roughness, contrast ratio (coverage ability), and bond strength.

[0122]

[0123] Results Analysis: Based on the data in Table 1 from Examples 1-3 and Comparative Examples 1-12, it can be seen that the roughness and contrast ratio (coverage ability) of the coatings prepared in Examples 1-3 of this invention are similar to the effect of real stone after polishing, and the bonding strength is much higher than the industry standard. Among them, Example 2 is the best example, while at least one of the roughness, contrast ratio (coverage ability), and bonding strength of Comparative Examples 1-12 does not meet the industry standard, especially the bonding strength, which differs significantly from the standard value. This invention adds an opaque polymer to the formula, which has good compatibility with materials such as acrylic emulsions. Compared with titanium dioxide used in conventional coatings, it can provide more uniform color coverage. The addition of inorganic materials such as quartz powder to the component system increases the roughness of the paint film, and the overall performance of the system exhibits a certain visual and tactile roughness. In addition, the addition of inorganic potassium silicate and other materials to the components, combined with the organic materials in the component system, shows high bonding strength and can combine with the inorganic fillers in the stone-like paint, greatly increasing the adhesion and making the coating more durable.

[0124] Experimental Example 2

[0125] Test items: Coverage of stone-like coatings, visual effect of simulated sanding edges, and tactile effect of simulated sanding edges.

[0126] Experimental method: Apply one coat of faux stone coating with a wet film thickness of 100-150μm. After drying, observe the visual and tactile effects. In addition, observe the original faux stone coating's hiding power, faux edge visual effect, and faux edge tactile effect before brushing as a blank example.

[0127] Test subjects: The coatings obtained in Examples 1-3 and Comparative Examples 1-12 were applied.

[0128] Experimental results: see Table 2.

[0129] Table 2. Test Table of Hiding Power, Imitation Edge Polishing Visual Effect, and Imitation Edge Polishing Tactile Effect of Stone-like Coating

[0130]

[0131]

[0132] Results Analysis: Based on the blank examples, Examples 1-3, and Comparative Examples 1-12, it can be seen that the coating prepared by the present invention can cover the color and pattern of the stone-like coating to a certain extent, making it appear faint and hazy, and has a good imitation of the effect after polishing. The simulation degree is high. When applied to the stone-like coating, the visual effect and tactile feel achieve the effect of real edge polishing. Its performance meets the requirements of JG / T24-2018 (Main Coating and Coating System) standard. However, at least one of the comparative examples fails to meet the industry standard, resulting in poor hiding power, lack of roughness, or substandard bonding strength. Therefore, when brushed onto the stone-like coating, the visual effect and tactile feel are different from the effect of real edge polishing, and the simulation degree is low.

[0133] The changes in data from Experiment 1 and Experiment 2 show that

[0134] The components of this application exhibit synergistic effects, with the synergistic effect exceeding that of simple additives.

[0135] Applying it to the surface of faux stone paint can cover the patterns and colors of the faux stone paint to a certain extent, giving it a hazy appearance, similar to the effect after polishing. The paint film has a certain roughness, mimicking the feel of rough polished stone. At the same time, the surface has a certain roughness, which makes it similar to the edge of natural rock slabs in both visual and tactile senses, making the faux stone paint more realistic.

[0136] 3. This invention is a stone-like edge-grinding effect coating, mainly applied to stone-like paint. It eliminates the need for grinding the deep grooves of the stone-like paint and provides a high degree of simulation, greatly reducing labor time and costs. This coating belongs to the field of architectural wall coatings, is a water-based coating, and is durable.

[0137] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. An application of a coating that mimics the edge-grinding effect of stone, characterized in that, It can be used to imitate the effect of polished edges of stone-like coatings. The stone-like edge polishing effect coating is made of a compound that can eliminate the need for polishing the deep grooves of stone-like coatings and provide a visual and / or tactile effect that imitates the polished edges of stone. The composition, by weight, comprises: 25-35 parts acrylic emulsion, 10-15 parts opaque polymer, 8-12 parts quartz powder, 8-12 parts calcium carbonate, 3-7 parts potassium silicate, 0.8-1.5 parts film-forming agent, 0.4-0.6 parts cellulose, 0.3-0.8 parts antifreeze, 0.1-0.5 parts dispersant, 0.3-0.8 parts defoamer, 0.1-0.4 parts bentonite, 0.1-0.3 parts preservative, 0.1-0.3 parts stabilizer, and the remaining component is deionized water; The opaque polymer is a hollow aqueous acrylic emulsion.

2. The application of the imitation stone edge-grinding effect coating as described in claim 1, characterized in that, The dispersant is type 1124 or a hydrophilic modified copolycarboxylate, the film-forming agent is alcohol ester dodecyl, the antifreeze agent is propylene glycol, the defoamer is type 1340 or mineral oil, the preservative is type Tor ACTICIDE RS CONC or an isothiazolinone compound, and the stabilizer is type Clariant SPS or a quaternary ammonium compound.

3. The application of the imitation stone edge-grinding effect coating as described in claim 2, characterized in that, The acrylic emulsion is model RS-996AD, the quartz powder is 100 mesh, the calcium carbonate is model GY-116A, the potassium silicate is model WJ-5536, the cellulose is model 250HBR, the bentonite is model BENAQUA 4000, and the hollow structure waterborne acrylic emulsion is model H400.

4. The application of the imitation stone edge-grinding effect coating as described in claim 1, characterized in that, The preparation method of the imitation stone edge-grinding effect coating includes the following steps: S1. Add the antifreeze, bentonite, dispersant, and defoamer to the deionized water in sequence while stirring at a speed of 1200-1500 rpm for 10-15 minutes until the mixture is homogeneous and the liquid is obtained. S2. Add calcium carbonate, quartz powder, and cellulose sequentially to the liquid obtained in S1 while stirring at a speed of 1200-1500 rpm for 25-30 minutes to obtain a slurry. S3. Add the acrylic emulsion, film-forming agent, opaque polymer emulsion, stabilizer, and potassium silicate sequentially to the slurry obtained in S2 while stirring at a speed of 1000-1200 rpm for 10-15 minutes to obtain the coating.

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