Preparation and application method of a high-hardness, polishable artistic coating

Abstract

This invention relates to the field of artistic coatings, specifically to a method for preparing and applying a high-hardness, polishable artistic coating. The invention uses heavy calcium carbonate powder and talc powder in the coating, and also adds glass powder, achieving filler gradation, improving density, and enhancing transparency during polishing. To achieve high hardness, the invention uses a compound of silicone-acrylic emulsion and potassium silicate solution. To achieve a more marble-like mirror effect, the invention uses a combination of nano-sized inorganic potassium silicate solution and micron-sized silicone-acrylic emulsion, combined with carnauba wax, resulting in a denser coating film. The invention hyperbranchs the glass powder, grafting multiple terminal hydroxyl groups onto its surface, and then further aminations it, grafting a large number of amino groups onto the glass powder. Finally, polydopamine is used to combine it with talc powder, improving the dispersibility of the talc powder and enhancing the hardness of the coating.

Description

Technical Field

[0001] This invention relates to the field of artistic coating technology, specifically to a method for preparing and applying a high-hardness, polishable artistic coating. Background Technology

[0002] With improved living standards and higher expectations for living environments, people are no longer satisfied with ordinary solid-color latex paint for walls. Commercial spaces, in particular, require a variety of artistic coatings to enhance their decorative appeal and showcase their taste. In recent years, artistic coatings have flourished, resulting in a wide range of materials. Marble, due to its scarcity, non-renewable nature, natural artistic texture, and mirror-like effect, has become increasingly popular, leading to the production of materials that mimic its appearance. Existing materials either achieve a glossy finish through waxing or topcoat application, or suffer from insufficient film hardness, making them susceptible to scratches and damage during use, affecting their aesthetics. Artistic coatings that achieve a mirror-like effect solely through polishing using a single material are extremely rare.

[0003] To address the above problems and improve the hardness of artistic coatings, this invention provides a method for preparing and applying a high-hardness, polishable artistic coating. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing and applying a high-hardness, polishable artistic coating, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The preparation of a high-hardness, polishable artistic coating includes the following steps:

[0007] Step 1: Take talc powder and deionized water, sonicate for 30-40 min, add dopamine hydrochloride, stir for 20-40 min, add Tris buffer, continue stirring for 12-16 h, add aminated glass powder, stir for 8-10 h, filter, wash, and dry to obtain talc-glass powder complex.

[0008] Step 2: Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 5-8 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 15-20 minutes. Add dispersant sodium polycarboxylate, wetting agent, fluorinated silicone acrylic emulsion, potassium silicate solution, wax emulsion, film-forming aid, and preservative. Stir for 5-8 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating.

[0009] More preferably, the coating comprises the following components, by weight percentage: 1-4% antifreeze propylene glycol, 0.5-1.5% thixotropic agent attapulgite, 0.1-0.35% hydroxyethyl cellulose, 0.1-0.25% pH adjuster 2-amino-2-methyl-1-propanol, 0.1-0.3% defoamer, 0.3-0.6% dispersant sodium polycarboxylate, 0.1-0.3% wetting agent, 12-18% fluorinated silicone acrylic emulsion, 5-10% potassium silicate solution, 3-7% wax emulsion, 0.5-1.5% film-forming aid, 0.1-0.25% preservative, 1-4% titanium dioxide, 22-39% heavy calcium carbonate powder, 9-17% talc-glass powder composite, 0.1-0.3% thickener, and the remainder is water.

[0010] A more optimized method for preparing the fluorinated silicone acrylic emulsion includes the following steps:

[0011] S1: Take butyl acrylate, methyl methacrylate, acrylic acid, styrene, vinyltriethoxysilane, and tridecafluorooctyltrimethoxysilane, mix them evenly, add ammonium persulfate, mix evenly, and obtain a mixed solution;

[0012] S2: Take deionized water, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether, butyl acrylate, methyl methacrylate, acrylic acid, and sodium bicarbonate. Heat to 75-76℃, stir evenly, add ammonium persulfate, heat to 78-80℃, stir for 30-40 minutes, add the mixed solution dropwise, keep warm at 80-82℃ for 1-2 hours, cool to 35-40℃, add ammonia to adjust pH to 7.5-8, filter, add epoxy resin, mix evenly, and obtain fluorinated silicone acrylic emulsion.

[0013] Ideally, the talc powder has a particle size of 1200-1250 mesh, and the ammoniated glass powder has a particle size of 2200-2500 mesh.

[0014] In a more optimized manner, the preparation method of the aminated glass powder is as follows: take hydroxylated glass powder and succinic anhydride, heat to 120-125℃ and stir until the succinic anhydride melts, add diethanolamine, and stir at 120-125℃ for 6-7 hours to obtain hyperbranched glass powder; take hyperbranched glass powder and diethylenetriamine, and react at 100-110℃ for 10-11 hours to obtain aminated glass powder.

[0015] A more optimized method for preparing the hydroxylated glass powder is as follows: take ethanol, deionized water, and KH550, stir evenly, add glass powder, heat to 50-55℃, stir for 5-6 hours, wash, filter, and dry to obtain hydroxylated glass powder.

[0016] In a more optimized manner, the wetting agent is an alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is a dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, the wax emulsion is carnauba wax, and the thickener is polyacrylate.

[0017] Ideally, the mass ratio of talc powder to ammoniated glass powder is (4-5):1.

[0018] A method for applying a high-hardness, polishable artistic coating: Apply the high-hardness, polishable artistic coating evenly to the wall covered with putty, then cross-grab it three times, and polish it with 2000-grit sandpaper to obtain the finished wall surface.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] (1) This invention uses 1250-mesh heavy calcium carbonate powder and 1250-mesh talc powder, and also adds 2500-mesh glass powder to achieve filler gradation, improve density, and also improve transparency during polishing. In order to achieve high hardness, this invention selects silicone acrylic emulsion and potassium silicate solution for compound use. The coating becomes harder and harder after film formation, thus achieving the effect of high hardness.

[0021] (2) In order to achieve a more marble-like mirror effect, the present invention selects nano-sized inorganic potassium silicate solution and micron-sized silicone acrylic emulsion for compound use, combined with carnauba wax, to make the coating film denser.

[0022] (3) The present invention performs hyperbranching treatment on glass powder, so that multiple terminal hydroxyl groups are grafted onto the surface of glass powder, and then further performs amination treatment, so that a large number of amino groups are grafted onto the glass powder. Then, polydopamine is used to combine it with talc powder, which improves the dispersibility of talc powder and enhances the hardness of coating.

[0023] (4) The present invention uses tridecafluorooctyltrimethoxysilane to modify silicone-acrylic emulsion, which can enhance the hydrophobicity of silicone-acrylic emulsion and thus improve the antifouling performance of coating. Then, epoxy resin is added to fluorinated silicone-acrylic emulsion for compounding. At this time, the epoxy groups in fluorinated silicone-acrylic emulsion can react with the amino groups on the talc-glass powder composite, which improves the density of the coating film and increases the hardness of the coating. Detailed Implementation

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0025] There are no specific restrictions on the suppliers of any of the raw materials involved in this invention; exemplary examples include:

[0026] Attapulgite clay: particle size: 120-325 mesh; Hydroxyethyl cellulose: available from Shanghai Aorun Chemical Co., Ltd., product number: HS30000YP2; Potassium silicate solution: available from Xingtai Dayang Chemical Co., Ltd., model: DY-28; Wax emulsion: Carnauba wax: available from Wen'an County Renxin Plastics Factory, model: BX-1; Heavy calcium carbonate powder: particle size: 1250 mesh; Talc powder: particle size: 1250 mesh; Glass powder: particle size: 2500 mesh; Epoxy resin: available from Wuhan Jiyesheng Chemical Co., Ltd., model: E-44.

[0027] Example 1: A method for preparing and applying a high-hardness, polishable artistic coating, comprising the following steps:

[0028] Step 1: Preparation of ammoniated glass powder:

[0029] Take 18 mL of ethanol, 2 mL of deionized water, and 2 g of KH550, stir well, add 5 g of glass powder, heat to 53 °C, stir for 5.5 h, wash, filter, and dry to obtain hydroxylated glass powder.

[0030] Take 5g of hydroxylated glass powder and 12g of succinic anhydride, heat to 122℃ and stir until the succinic anhydride dissolves, add 50mL of diethanolamine, and stir at 122℃ for 6.5h to obtain hyperbranched glass powder.

[0031] Take 5g of hyperbranched glass powder and 15g of diethylenetriamine, and react them at 105℃ for 10.5h to obtain ammoniated glass powder;

[0032] Step 2: Preparation of talc-glass powder composite:

[0033] Take 4g of talc powder and 300mL of deionized water, sonicate for 30min, add 2g of dopamine hydrochloride, stir for 20min, add Tris buffer, adjust the pH to 8.0, continue stirring for 15h, add 1g of aminated glass powder, stir for 9h, filter, wash, and dry to obtain talc-glass powder complex.

[0034] Step 3: Preparation of fluorinated silicone acrylic emulsion:

[0035] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, 2g of vinyltriethoxysilane, and 3g of tridecafluorooctyltrimethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0036] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzene sulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 75.5 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 79 °C, stir for 35 min, add the mixed solution dropwise, keep warm at 81 °C for 1 h, cool to 38 °C, add ammonia to adjust pH to 7.8, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0037] Step 4: Preparation of Artistic Paint:

[0038] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 6 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 18 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 7 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0039] The coating comprises the following components, by weight percentage: 3% antifreeze propylene glycol, 1% thixotropic agent attapulgite, 0.2% hydroxyethyl cellulose, 0.2% pH adjuster 2-amino-2-methyl-1-propanol, 0.2% defoamer, 0.5% dispersant sodium polycarboxylate, 0.2% wetting agent, 13% fluorinated silicone acrylic emulsion, 7% potassium silicate solution, 6% wax emulsion, 1% film-forming aid, 0.1% a mixture of 1,2-benzisothiazolin-3-one and 0.1% methylisothiazolinone, 3% titanium dioxide, 30% heavy calcium carbonate powder, 15% talc-glass powder composite, 0.2% thickener, and the remainder is water.

[0040] Example 2: A method for preparing and applying a high-hardness, polishable artistic coating, comprising the following steps:

[0041] Step 1: Preparation of ammoniated glass powder:

[0042] Take 18 mL of ethanol, 2 mL of deionized water, and 2 g of KH550, stir well, add 5 g of glass powder, heat to 50 °C, stir for 5 h, wash, filter, and dry to obtain hydroxylated glass powder.

[0043] Take 5g of hydroxylated glass powder and 12g of succinic anhydride, heat to 120℃ and stir until the succinic anhydride dissolves, add 50mL of diethanolamine, and stir at 120℃ for 6h to obtain hyperbranched glass powder.

[0044] Take 5g of hyperbranched glass powder and 15g of diethylenetriamine, and react them at 100℃ for 10h to obtain ammoniated glass powder;

[0045] Step 2: Preparation of talc-glass powder composite:

[0046] Take 4g of talc powder and 300mL of deionized water, sonicate for 30min, add 2g of dopamine hydrochloride, stir for 20min, add Tris buffer, adjust the pH to 8.0, continue stirring for 16h, add 1g of aminated glass powder, stir for 8h, filter, wash, and dry to obtain talc-glass powder complex.

[0047] Step 3: Preparation of fluorinated silicone acrylic emulsion:

[0048] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, 2g of vinyltriethoxysilane, and 3g of tridecafluorooctyltrimethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0049] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzenesulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 75 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 78 °C, stir for 30 min, add the mixed solution dropwise, keep warm at 80 °C for 1 h, cool to 35 °C, add ammonia to adjust pH to 7.5, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0050] Step 4: Preparation of Artistic Paint:

[0051] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 5 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 15 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 5 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, and thickener, then add the remaining deionized water and stir evenly to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0052] The coating comprises the following components, by weight percentage: 2% antifreeze propylene glycol, 0.5% thixotropic agent attapulgite, 0.15% hydroxyethyl cellulose, 0.15% pH adjuster 2-amino-2-methyl-1-propanol, 0.2% defoamer, 0.3% dispersant sodium polycarboxylate, 0.1% wetting agent, 16% fluorinated silicone acrylic emulsion, 7% potassium silicate solution, 4% wax emulsion, 1% film-forming aid, 0.1% 1,2-benzisothiazolin-3-one, 0.1% methylisothiazolinone, 1% titanium dioxide, 25% heavy calcium carbonate powder, 11% talc-glass powder composite, 0.2% thickener, and the remainder is water.

[0053] Example 3: A method for preparing and applying a high-hardness, polishable artistic coating, comprising the following steps:

[0054] Step 1: Preparation of ammoniated glass powder:

[0055] Take 18 mL of ethanol, 2 mL of deionized water, and 2 g of KH550, stir well, add 5 g of glass powder, heat to 55 °C, stir for 6 h, wash, filter, and dry to obtain hydroxylated glass powder.

[0056] Take 5g of hydroxylated glass powder and 12g of succinic anhydride, heat to 125℃ and stir until the succinic anhydride dissolves, add 50mL of diethanolamine, and stir at 125℃ for 7h to obtain hyperbranched glass powder.

[0057] Take 5g of hyperbranched glass powder and 15g of diethylenetriamine, and react them at 110℃ for 11h to obtain aminated glass powder;

[0058] Step 2: Preparation of talc-glass powder composite:

[0059] Take 4g of talc powder and 300mL of deionized water, sonicate for 30min, add 2g of dopamine hydrochloride, stir for 20min, add Tris buffer, adjust the pH to 8.0, continue stirring for 14h, add 1g of aminated glass powder, stir for 10h, filter, wash, and dry to obtain talc-glass powder complex.

[0060] Step 3: Preparation of fluorinated silicone acrylic emulsion:

[0061] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, 2g of vinyltriethoxysilane, and 3g of tridecafluorooctyltrimethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0062] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzenesulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 76 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 80 °C, stir for 40 min, add the mixed solution dropwise, keep warm at 82 °C for 1 h, cool to 40 °C, add ammonia to adjust pH to 8, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0063] Step 4: Preparation of Artistic Paint:

[0064] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 8 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 20 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 8 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0065] The coating comprises the following components, by weight percentage: 4% antifreeze propylene glycol, 1.5% thixotropic agent attapulgite, 0.35% hydroxyethyl cellulose, 0.25% pH adjuster 2-amino-2-methyl-1-propanol, 0.3% defoamer, 0.6% dispersant sodium polycarboxylate, 0.3% wetting agent, 16% fluorinated silicone acrylic emulsion, 10% potassium silicate solution, 7% wax emulsion, 1.5% film-forming aid, 0.15% 1,2-benzisothiazolin-3-one, 0.1% methylisothiazolinone, 2% titanium dioxide, 36% heavy calcium carbonate powder, 16% talc-glass powder composite, 0.3% thickener, and the remainder is water.

[0066] Comparative Example 1: The silicone-acrylic emulsion was not fluorinated; all other aspects were the same as in Example 1.

[0067] A method for preparing and applying a high-hardness, polishable artistic coating includes the following steps:

[0068] Step 1: Preparation of ammoniated glass powder:

[0069] Take 18 mL of ethanol, 2 mL of deionized water, and 2 g of KH550, stir well, add 5 g of glass powder, heat to 53 °C, stir for 5.5 h, wash, filter, and dry to obtain hydroxylated glass powder.

[0070] Take 5g of hydroxylated glass powder and 12g of succinic anhydride, heat to 122℃ and stir until the succinic anhydride dissolves, add 50mL of diethanolamine, and stir at 122℃ for 6.5h to obtain hyperbranched glass powder.

[0071] Take 5g of hyperbranched glass powder and 15g of diethylenetriamine, and react them at 105℃ for 10.5h to obtain ammoniated glass powder;

[0072] Step 2: Preparation of talc-glass powder composite:

[0073] Take 4g of talc powder and 300mL of deionized water, sonicate for 30min, add 2g of dopamine hydrochloride, stir for 20min, add Tris buffer, adjust the pH to 8.0, continue stirring for 15h, add 1g of aminated glass powder, stir for 9h, filter, wash, and dry to obtain talc-glass powder complex.

[0074] Step 3: Preparation of silicone-acrylic emulsion:

[0075] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, and 2g of vinyltriethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0076] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzene sulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 75.5 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 79 °C, stir for 35 min, add the mixed solution dropwise, keep warm at 81 °C for 1 h, cool to 38 °C, add ammonia to adjust pH to 7.8, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0077] Step 4: Preparation of Artistic Paint:

[0078] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 6 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 18 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 7 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0079] The coating comprises the following components, by weight percentage: 3% antifreeze propylene glycol, 1% thixotropic agent attapulgite, 0.2% hydroxyethyl cellulose, 0.2% pH adjuster 2-amino-2-methyl-1-propanol, 0.2% defoamer, 0.5% dispersant sodium polycarboxylate, 0.2% wetting agent, 13% fluorinated silicone acrylic emulsion, 7% potassium silicate solution, 6% wax emulsion, 1% film-forming aid, 0.1% 1,2-benzisothiazolin-3-one, 0.1% methylisothiazolinone, 3% titanium dioxide, 30% heavy calcium carbonate powder, 15% talc-glass powder composite, 0.2% thickener, and the remainder is water.

[0080] Comparative Example 2: Talc and glass powder were not combined; all other aspects were the same as in Example 1.

[0081] A method for preparing and applying a high-hardness, polishable artistic coating includes the following steps:

[0082] Step 1: Preparation of ammoniated glass powder:

[0083] Take 18 mL of ethanol, 2 mL of deionized water, and 2 g of KH550, stir well, add 5 g of glass powder, heat to 53 °C, stir for 5.5 h, wash, filter, and dry to obtain hydroxylated glass powder.

[0084] Take 5g of hydroxylated glass powder and 12g of succinic anhydride, heat to 122℃ and stir until the succinic anhydride dissolves, add 50mL of diethanolamine, and stir at 122℃ for 6.5h to obtain hyperbranched glass powder.

[0085] Take 5g of hyperbranched glass powder and 15g of diethylenetriamine, and react them at 105℃ for 10.5h to obtain ammoniated glass powder;

[0086] Step 2: Preparation of fluorinated silicone acrylic emulsion:

[0087] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, 2g of vinyltriethoxysilane, and 3g of tridecafluorooctyltrimethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0088] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzene sulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 75.5 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 79 °C, stir for 35 min, add the mixed solution dropwise, keep warm at 81 °C for 1 h, cool to 38 °C, add ammonia to adjust pH to 7.8, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0089] Step 3: Preparation of Artistic Paint:

[0090] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 6 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 18 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 7 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc powder, glass powder, and thickener, then add the remaining deionized water and stir evenly to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicone defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0091] The coating comprises the following components, by weight percentage: 3% antifreeze propylene glycol, 1% thixotropic agent attapulgite, 0.2% hydroxyethyl cellulose, 0.2% pH adjuster 2-amino-2-methyl-1-propanol, 0.2% defoamer, 0.5% dispersant sodium polycarboxylate, 0.2% wetting agent, 13% fluorinated silicone acrylic emulsion, 7% potassium silicate solution, 6% wax emulsion, 1% film-forming aid, 0.1% 1,2-benzisothiazolin-3-one, 0.1% methylisothiazolinone, 3% titanium dioxide, 30% heavy calcium carbonate powder, 10% talc, 5% glass powder composite, 0.2% thickener, and the remainder is water.

[0092] Comparative Example 3: No amino modification was performed on the glass powder; all other aspects were the same as in Example 1.

[0093] A method for preparing and applying a high-hardness, polishable artistic coating includes the following steps:

[0094] Step 1: Preparation of talc-glass powder composite:

[0095] Take 4g of talc powder and 300mL of deionized water, sonicate for 30min, add 2g of dopamine hydrochloride, stir for 20min, add Tris buffer, adjust the pH to 8.0, continue stirring for 15h, add 1g of glass powder, stir for 9h, filter, wash, and dry to obtain talc-glass powder complex.

[0096] Step 2: Preparation of fluorinated silicone acrylic emulsion:

[0097] Take 46g of butyl acrylate, 32g of methyl methacrylate, 1g of acrylic acid, 5g of styrene, 2g of vinyltriethoxysilane, and 3g of tridecafluorooctyltrimethoxysilane, mix them evenly, add 1g of ammonium persulfate, mix evenly, and obtain a mixed solution.

[0098] Take 300 mL of deionized water, 1.5 g of sodium dodecylbenzene sulfonate, 1.2 g of octylphenol polyoxyethylene ether, 9 g of butyl acrylate, 8 g of methyl methacrylate, 1 g of acrylic acid, and 3 g of sodium bicarbonate. Heat to 75.5 °C, stir until homogeneous, add 0.5 g of ammonium persulfate, heat to 79 °C, stir for 35 min, add the mixed solution dropwise, keep warm at 81 °C for 1 h, cool to 38 °C, add ammonia to adjust pH to 7.8, filter, add 12 g of epoxy resin E-44, mix until homogeneous, and obtain fluorinated silicone acrylic emulsion.

[0099] Step 3: Preparation of Artistic Paint:

[0100] Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 6 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 18 minutes. Add dispersant sodium polycarboxylate, wetting agent, silicone-acrylic emulsion, potassium silicate solution, wax emulsion carnauba wax, film-forming aid, and preservative. Stir for 7 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating. The wetting agent is alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, and the thickener is polyacrylate.

[0101] The coating comprises the following components, by weight percentage: 3% antifreeze propylene glycol, 1% thixotropic agent attapulgite, 0.2% hydroxyethyl cellulose, 0.2% pH adjuster 2-amino-2-methyl-1-propanol, 0.2% defoamer, 0.5% dispersant sodium polycarboxylate, 0.2% wetting agent, 13% fluorinated silicone acrylic emulsion, 7% potassium silicate solution, 6% wax emulsion, 1% film-forming aid, 0.1% 1,2-benzisothiazolin-3-one, 0.1% methylisothiazolinone, 3% titanium dioxide, 30% heavy calcium carbonate powder, 15% talc-glass powder composite, 0.2% thickener, and the remainder is water.

[0102] experiment:

[0103] The artistic coatings prepared in Examples 1-3 and Comparative Examples 1-3 were subjected to performance tests, referring to GB6739-86. They were cured for 7 days at 25℃ and 50% relative humidity, and then the hardness of the dry film was tested. The high-hardness, polishable artistic coating was evenly applied to a wall coated with putty, then cross-scraped three times, and polished with 2000-grit sandpaper to obtain the finished wall surface. The polishability of the coating film was then tested. The water contact angle after applying the artistic coating was tested to characterize the coating's anti-fouling performance.

[0104] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Dry film hardness HB HB HB HB H H Dry film polishability Easy to polish Easy to polish Easy to polish Easy to polish Easy to polish Easy to polish Water contact angle ° 127 126 127 111 126 124

[0105] Conclusion: The data comparison in the table shows that in Comparative Example 1, without fluorination modification of the silicone-acrylic emulsion, the water contact angle of the coating is low, resulting in poor antifouling performance. In Comparative Example 2, without combining talc and glass powder, the dispersibility of talc is poor, leading to lower hardness of the dry film. In Comparative Example 3, without amino modification of the glass powder, the compatibility of the glass powder in the coating is poor, affecting the hardness of the coating. The coatings prepared using the method provided in Examples 1-3 exhibit high hardness, good antifouling performance, and easy polishing of the dry film, demonstrating excellent performance.

[0106] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing a high-hardness, polishable artistic coating, characterized in that: Includes the following steps: Step 1: Take talc powder and deionized water, sonicate for 30-40 min, add dopamine hydrochloride, stir for 20-40 min, add Tris buffer, continue stirring for 12-16 h, add aminated glass powder, stir for 8-10 h, filter, wash, and dry to obtain talc-glass powder complex. Step 2: Take deionized water and antifreeze propylene glycol, and while stirring, add thixotropic agent attapulgite and hydroxyethyl cellulose. Stir for 5-8 minutes, then add pH adjuster 2-amino-2-methyl-1-propanol and defoamer and disperse for 15-20 minutes. Add dispersant sodium polycarboxylate, wetting agent, fluorinated silicone acrylic emulsion, potassium silicate solution, wax emulsion, film-forming aid, and preservative. Stir for 5-8 minutes, filter through a 40-mesh filter, add titanium dioxide, heavy calcium carbonate powder, talc-glass powder composite, thickener, and the remaining deionized water. Stir until homogeneous to obtain a high-hardness, polishable artistic coating. The preparation method of the fluorinated silicone acrylic emulsion is as follows: Includes the following steps: S1: Take butyl acrylate, methyl methacrylate, acrylic acid, styrene, vinyltriethoxysilane, and tridecafluorooctyltrimethoxysilane, mix them evenly, add ammonium persulfate, mix evenly, and obtain a mixed solution; S2: Take deionized water, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether, butyl acrylate, methyl methacrylate, acrylic acid, and sodium bicarbonate. Heat to 75-76℃, stir evenly, add ammonium persulfate, heat to 78-80℃, stir for 30-40 min, add the mixed solution dropwise, keep warm at 80-82℃ for 1-2 h, cool to 35-40℃, add ammonia to adjust pH to 7.5-8, filter, add epoxy resin, mix evenly, and obtain fluorinated silicone acrylic emulsion; The preparation method of the aminated glass powder is as follows: take hydroxylated glass powder and succinic anhydride, heat to 120-125℃ and stir until the succinic anhydride melts, add diethanolamine, and stir at 120-125℃ for 6-7 hours to obtain hyperbranched glass powder; take hyperbranched glass powder and diethylenetriamine, and react at 100-110℃ for 10-11 hours to obtain aminated glass powder; The preparation method of the hydroxylated glass powder is as follows: take ethanol, deionized water, and KH550, stir evenly, add glass powder, heat to 50-55℃, stir for 5-6 hours, wash, filter, and dry to obtain hydroxylated glass powder.

2. The preparation method of a high-hardness, polishable artistic coating according to claim 1, characterized in that: The coating comprises the following components, by weight percentage: 1-4% antifreeze propylene glycol, 0.5-1.5% thixotropic agent attapulgite, 0.1-0.35% hydroxyethyl cellulose, 0.1-0.25% pH adjuster 2-amino-2-methyl-1-propanol, 0.1-0.3% defoamer, 0.3-0.6% dispersant sodium polycarboxylate, 0.1-0.3% wetting agent, 12-16% fluorinated silicone acrylic emulsion, 5-10% potassium silicate solution, 3-7% wax emulsion, 0.5-1.5% film-forming aid, 0.1-0.25% preservative, 1-4% titanium dioxide, 22-36% heavy calcium carbonate powder, 9-16% talc-glass powder composite, 0.1-0.3% thickener, and the remainder is deionized water.

3. The preparation of a high-hardness, polishable artistic coating according to claim 1, characterized in that: The talc powder has a particle size of 1200-1250 mesh; the ammoniated glass powder has a particle size of 2200-2500 mesh.

4. The preparation of a high-hardness, polishable artistic coating according to claim 1, characterized in that: The wetting agent is an alkyl aryl polyether, the defoamer is an organosilicon defoamer, the film-forming aid is dodecyl alcohol ester, the preservative is a mixture of 1,2-benzisothiazolin-3-one and methylisothiazolinone, the wax emulsion is carnauba wax, and the thickener is polyacrylate.

5. The preparation of a high-hardness, polishable artistic coating according to claim 1, characterized in that: The mass ratio of talc powder to ammoniated glass powder is (4-5):

1.

6. A method for applying a high-hardness, polishable artistic coating, characterized in that: The high-hardness polishable art paint as described in any one of claims 1-5 is prepared by uniformly applying the prepared high-hardness polishable art paint to a wall coated with putty, then cross-scraping three times, and polishing to obtain the wall surface after construction.