An interior wall light weight real stone paint and a preparation method thereof
By using modified titanium dioxide and perlite in interior wall stone paint, the problem of mold growth was solved, the antibacterial properties and aesthetics of the paint were enhanced, and a highly efficient anti-mold and antibacterial effect was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SUZHOU HIGH-TECH DACHENG LOW-CARBON ENVIRONMENTAL PROTECTION NEW MATERIAL DEV CO LTD
- Filing Date
- 2024-03-19
- Publication Date
- 2026-05-19
AI Technical Summary
Existing interior wall stone paint is prone to mold and insect eggs in humid environments, affecting aesthetics and posing health risks, and its anti-mold and antibacterial properties are insufficient.
Modified titanium dioxide and modified perlite are used as the main components. Through amidation reaction and surface modification treatment, the dispersibility and antibacterial effect are improved. Thickeners, antifreeze and mildew inhibitors are reasonably combined to enhance the coating’s strength and flexibility.
It significantly improves the hiding power, gloss, hardness and stability of stone paint, enhances antibacterial properties, prevents paint cracking, avoids mold growth, and improves service life and aesthetics.
Smart Images
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Figure BDA0004748016450000152
Abstract
Description
Technical Field
[0001] This application relates to the field of architectural coatings technology, and more specifically, to a lightweight stone-like paint for interior walls and its preparation method. Background Technology
[0002] Stone-like paint is a type of coating that closely resembles the decorative effect of marble and granite. Also known as imitation stone paint or colored glaze quartz sand paint, its industry standard name is synthetic resin emulsion sand-textured architectural coating. Its decorative effect is comparable to natural stone, giving a sense of elegance, harmony, and solemnity. It is particularly effective on curved surfaces, creating a lifelike and natural effect. Compared to traditional tile and dry-hanging stone cladding, stone-like paint offers advantages such as fire resistance, water resistance, acid and alkali resistance, lower production costs, and durability. It effectively prevents the erosion of buildings by harsh external environments, extending their lifespan. The performance characteristics of stone-like paint make it suitable for both concrete and cement interior and exterior walls, as well as for substrates such as asbestos cement board, gypsum board, FC board, and polyurethane foam board, indicating broad development potential and a promising market outlook.
[0003] Most stone-like paint materials primarily function as protective and decorative coatings, but their anti-mold and antibacterial properties for interior wall coatings are relatively weak. During use, mold and insect eggs easily grow on the surface of interior walls, especially in humid coastal areas. Mold can multiply rapidly under suitable conditions of 20-38℃ and relative humidity of around 85%, and it can also erode the substrate. At the same time, interior walls are also a major breeding ground for fungi, bacteria, and insect eggs. These molds, bacteria, fungi, and insect eggs can damage the aesthetics of the paint surface and seriously affect people's health. Therefore, researching stone-like paints with anti-mold and antibacterial properties is of great significance. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, this application provides a lightweight stone-like paint for interior walls and a method for preparing the same.
[0005] In the first aspect, this application provides a lightweight stone-like paint for interior walls, employing the following technical solution:
[0006] A lightweight stone-like interior wall paint comprises the following components in weight percentages: 15%-20% emulsion, 0.5%-1.5% modified titanium dioxide, 45%-60% filler, 0.6%-1% thickener, 0.6%-0.8% defoamer, 0.3%-0.5% wetting agent, 0.5%-0.7% dispersant, 2%-2.2% film-forming aid, 1%-1.2% antifreeze, 0.1%-0.2% mildew inhibitor, 0.1%-0.15% pH adjuster, and the balance being water.
[0007] By employing the above technical solution, a lightweight stone-like paint substrate is prepared mainly using emulsions and fillers. The addition of modified titanium dioxide improves the dispersibility of nano-titanium dioxide in the stone-like paint, significantly enhancing its hiding power and improving its gloss, hardness, wear resistance, and stability. Furthermore, modified titanium dioxide provides strong UV shielding, preventing UV damage and extending the lifespan of the stone-like paint. It also possesses bactericidal properties, particularly under UV irradiation, where it undergoes electron transitions, transferring energy to generate electrons and holes on the ion surface. Holes oxidize water molecules, while electrons reduce oxygen in the air, forming hydroxide ions with strong oxidizing power. These ions inhibit and kill microorganisms in contact with the coating. It exhibits good bactericidal effects against Staphylococcus aureus, Escherichia coli, and other bacteria, with a higher antibacterial rate. The addition of fillers further enhances the strength and durability of the stone-like paint, reduces gloss, and increases its layering and aesthetic appeal.
[0008] Adding thickeners can improve the adhesion and toughness of coatings, while adding dispersants can promote the uniform dispersion of various substances, increase the degree of cross-linking and density of materials, and make the dispersion system more stable. By reasonably increasing the dosage of wetting agents, dispersants, and defoamers, and by selecting and reasonably matching thickeners, antifreeze agents, and mildew inhibitors, the strength and flexibility of stone paint can be improved, preventing the coating from cracking, enhancing the sense of layering and aesthetics after the stone paint is applied, and the mildew inhibitor can play an antibacterial role and prevent mold growth.
[0009] In one specific implementation scheme, the modified titanium dioxide is prepared by: weighing a certain amount of titanium dioxide and dispersing it in methanol, with a mass ratio of titanium dioxide to methanol of 1:10-15. After stirring evenly, γ-aminopropyltriethoxysilane is dispersed in the above titanium dioxide methanol solution at a mass ratio of 2:5-8. The mixture is stirred and reacted at 45-55°C for 12-16 hours, and then centrifuged and dried to obtain modified titanium dioxide.
[0010] By adopting the above technical solution, titanium dioxide has self-cleaning and antibacterial effects. In order to make the titanium dioxide particles uniformly dispersed in the coating, the antibacterial and self-cleaning effects are more obvious, and to avoid the easy agglomeration and clumping of titanium dioxide, silane coupling agent is used to modify the titanium dioxide particles to improve their dispersibility and stability in the coating.
[0011] In one specific feasible embodiment, the modified titanium dioxide is hyperbranched triazine-grafted titanium dioxide, and the specific synthesis steps include: dispersing titanium dioxide and diethylenetriamine in tetrahydrofuran, adding 4-dimethylaminopyridine, reacting at 60-75℃ for 3-5h to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0012] Titanium dioxide grafted with cyanuric chloride and diethylenetriamine was dispersed in tetrahydrofuran and reacted at 20-30℃ for 2-5 h. Then, under the conditions of N,N-dicyclohexylcarbodiimide and AlCl3, the reaction temperature was raised to 60-85℃ and refluxed for 5-8 h to obtain hyperbranched triazine-grafted titanium dioxide.
[0013] By adopting the above technical solution, firstly, diethylenetriamine is modified and grafted onto titanium dioxide via an amidation reaction; then, highly reactive cyanuric chloride is added to the reaction system, where the three highly reactive chlorine atoms in the cyanuric chloride react with the amino groups to synthesize hyperbranched triazine-grafted titanium dioxide. This not only overcomes the disadvantage of titanium dioxide's own agglomeration, but also increases the strong interaction between the hyperbranched triazine-grafted titanium dioxide with a large number of active groups and the interface between the two phases of the stone paint material, thereby enhancing the crack resistance of the material.
[0014] In one specific implementation, the mass ratio of titanium dioxide to diethylenetriamine is 1:3-8.
[0015] By adopting the above technical solution, a certain mass ratio of titanium dioxide to diethylenetriamine can ensure the number and grafting degree of active functional groups in the hyperbranched compound precursor, thus guaranteeing the dispersibility of titanium dioxide in real stone paint.
[0016] In one specific implementation, the mass ratio of cyanuric chloride to diethylenetriamine-grafted titanium dioxide is 0.8-5:1.
[0017] By employing the above technical solution, the hyperbranching degree of hyperbranched triazine-grafted titanium dioxide is adjusted by controlling the mass ratio of cyanuric chloride to diethylenetriamine-grafted titanium dioxide. This helps improve the dispersibility of titanium dioxide in stone-like paint, and also helps enhance the bonding strength at interfaces with other admixtures, thereby improving the crack resistance and overall integrity of the material.
[0018] In one specific implementation scheme, the filler includes graded sand, colored rock sand, and modified perlite. The modified perlite is prepared by weighing perlite, drying it at 60-70℃ for 1-3 hours, adding it to a dimethylsiloxane solution diluted with toluene, stirring it evenly at room temperature, letting it stand for 1-3 hours, filtering it, and drying it at 60-80℃ to obtain modified perlite.
[0019] By adopting the above technical solution, the surface of perlite is modified to reduce the hydrophilic groups on the surface of perlite, making it less likely to absorb water, increasing the affinity between perlite particles and organic phase, reducing the surface activity of perlite, enhancing the smoothness of the stone paint material, and making the stone paint material less prone to mold growth during long-term use.
[0020] In one specific feasible implementation, the mass ratio of modified titanium dioxide to modified perlite is 1:2-5.
[0021] By adopting the above technical solution, and by adding a certain mass ratio of modified titanium dioxide and modified perlite, the smoothness of the modified perlite can be fully utilized, which can promote the wider distribution of titanium dioxide in the stone paint material, further improve the dispersibility of modified titanium dioxide, and enhance the antibacterial and anti-fouling effect of the stone paint material.
[0022] In one specific implementation, the emulsion is an acrylic / styrene copolymer emulsion; the thickener is hydroxyethyl cellulose ether; the defoamer is a silica-based defoamer; the wetting agent is a nonionic surfactant; the dispersant is sodium polycarboxylate; the film-forming aid is 12-carbon alcohol ester; the antifreeze agent is ethylene glycol; the fungicide is a water-based fungicide; and the pH adjuster is an organic alcohol amine.
[0023] By adopting the above technical solutions, the acrylic / styrene copolymer emulsion exhibits good weather resistance, anti-saponification properties, and is free of alkylphenol polyoxyethylene ethers, resulting in a safer and more environmentally friendly lightweight stone-like paint material. Hydroxyethyl cellulose ether can improve the hardness and flexibility of the stone-like paint material, enhance its alkali resistance, and prevent cracking on interior walls after application. The mildew inhibitor can play an antibacterial role and prevent mold growth. The film-forming aid can improve the hiding power of the stone-like paint. Organic alcohol amines can improve the dispersion efficiency of sodium polycarboxylate as a dispersant. Through the organic combination of the above dosages, the overall performance of the coating can be significantly improved.
[0024] Secondly, this application provides a method for preparing lightweight stone-like paint for interior walls, using the following technical solution: A method for preparing lightweight stone-like paint for interior walls includes the following steps: water, dispersant, and wetting agent are added to a container at 300-500 r / min for dispersion according to a ratio; defoamer is slowly added and stirred for 5-10 min; pH adjuster is added and stirred at 600-900 r / min for 10-30 min; film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener are added sequentially and stirred for 5-10 min; modified titanium dioxide and modified perlite are added and stirred at the adjusted speed; finally, graded sand and colored rock sand are added to obtain lightweight stone-like paint for interior walls.
[0025] By adopting the above technical solution and mixing the admixtures in batches, the admixtures interact fully to improve the mechanical properties of the stone paint, such as crack resistance, flexibility, and bonding strength. It has a good covering and crack resistance effect on the fine cracks of the interior wall surface, strong scratch resistance, and good weather resistance. Finally, the addition of modified titanium dioxide and modified perlite ensures the excellent antibacterial effect of the stone paint, which together prevents the lightweight stone paint from peeling and becoming moldy, thus guaranteeing its antibacterial and anti-fouling effects.
[0026] In one specific implementation, the condition for adjusting the stirring speed is to stir at 1000-1200 rpm for 1-2.5 hours.
[0027] By adopting the above technical solution, and by adding modified titanium dioxide and modified perlite together and adjusting the rotation speed, the modified titanium dioxide and modified perlite can be fully mixed, ensuring that the modified titanium dioxide is fully dispersed. Furthermore, the modified perlite can increase the filling density, giving the stone paint material a certain degree of waterproof performance, further ensuring that the stone paint material does not become moldy in humid environments, and improving the weather resistance of the stone paint material.
[0028] In summary, this application has the following beneficial effects:
[0029] 1. A lightweight stone-like paint substrate is prepared mainly using emulsions and fillers. By adding modified titanium dioxide, the dispersibility of nano-titanium dioxide in the stone-like paint can be improved, significantly enhancing the covering effect and improving the gloss, hardness, wear resistance, and stability of the stone-like paint. On the other hand, modified titanium dioxide has a strong UV shielding effect, preventing UV damage and extending the service life of the stone-like paint. Modified titanium dioxide also has bactericidal properties. Adding thickeners can improve the adhesion and toughness of the coating. Adding dispersants can promote the uniform dispersion of various substances, improve the degree of cross-linking and density of materials, and make the dispersion system more stable. By reasonably increasing the dosage of wetting agents, dispersants, and defoamers, and by optimizing and reasonably combining thickeners, antifreeze agents, and mildew inhibitors, the strength and flexibility of the stone-like paint are improved, preventing cracking of the coating and enhancing the layering and aesthetics of the stone-like paint after coating. Furthermore, the mildew inhibitor can play an antibacterial role and prevent mold growth.
[0030] 2. Diethylenetriamine is modified and grafted onto silica via an amidation reaction. Then, highly reactive cyanuric chloride is added to the reaction system. The three highly reactive chlorine atoms in the cyanuric chloride react with the hydroxyl groups to synthesize hyperbranched triazine-grafted titanium dioxide. This not only overcomes the disadvantage of titanium dioxide's own agglomeration but also increases the amount of hyperbranched triazine-grafted titanium dioxide with a large number of active groups. Furthermore, strong interactions exist between the two phases of the stone paint material, enhancing the material's crack resistance.
[0031] 3. By adding a certain mass ratio of modified titanium dioxide to modified perlite, the modified perlite, which has a certain degree of slipperiness, can promote the wider distribution of titanium dioxide in the stone paint material, further improving the dispersibility of modified titanium dioxide and enhancing the antibacterial and anti-fouling effects of the stone paint material. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the embodiments.
[0033] Some of the raw materials used in the preparation examples and embodiments: acrylic / styrene copolymer emulsion (model: BASF 7066); hydroxyethyl cellulose ether (model: EBS481FQ); silica defoamer (model: SN-154); nonionic surfactant (model: SN-WET996); sodium polycarboxylate (model: OROTAN731A); aqueous mildew inhibitor (model: Polyphase-AF3); organic alcohol amine (model: AMP-95); 12-carbon alcohol ester (purchased from Shandong Jinhe Chemical Co., Ltd.); diethylenetriamine Purchased from Shandong Mingyu Supply Chain Management Co., Ltd.; Cyanide chloroform, model: HS-H11; Graded sand 20-40 mesh: purchased from Hebei Jingshi Mineral Products Co., Ltd.; Colored rock sand 60 mesh: purchased from Lingshou Yuanda Mica Factory; Perlite 180 mesh: purchased from Shijiazhuang Hualang Mineral Products Trading Co., Ltd.; Titanium dioxide is nano-anatinous titanium dioxide, model: JWN-A50; Dimethylsiloxane solution diluted with toluene: dimethylsiloxane solution with a toluene content of 20%; γ-aminopropyltriethoxysilane, model: KH-550.
[0034] Unless otherwise specified, all raw materials used in the examples and comparative examples are commercially available products.
[0035] Preparation Example
[0036] Example of preparation of modified titanium dioxide
[0037] Preparation Example 1
[0038] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.3 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 60 °C and react for 3 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0039] Subsequently, 0.08 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 60 °C, and the mixture was refluxed for 5 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0040] Preparation Example 2
[0041] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.3 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0042] Subsequently, 0.08 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0043] Preparation Example 3
[0044] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.8 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0045] Subsequently, 0.08 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0046] Preparation Example 4
[0047] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.3 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0048] Subsequently, 0.2 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0049] Preparation Example 5
[0050] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.3 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0051] Subsequently, 0.5 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0052] Preparation Example 6
[0053] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.1 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0054] Subsequently, 0.08 kg of cyanuric chloride and 0.1 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0055] Preparation Example 7
[0056] Add 500 ml of tetrahydrofuran to a 1000 ml three-necked flask, weigh out 0.1 kg of titanium dioxide and 0.3 kg of diethylenetriamine and disperse them in tetrahydrofuran, then add 0.015 kg of 4-dimethylaminopyridine and stir to dissolve them. Heat to 75 °C and react for 5 h. After the reaction is complete, centrifuge and wash with tetrahydrofuran to obtain titanium dioxide grafted with the precursor diethylenetriamine.
[0057] Subsequently, 0.08 kg of cyanuric chloride and 0.08 kg of the diethylenetriamine-grafted titanium dioxide obtained above were dispersed in 800 ml of tetrahydrofuran, stirred and dissolved, nitrogen gas was introduced, and the mixture was heated to 20 °C for 2 h. Then, 0.008 kg of N,N-dicyclohexylcarbodiimide and 0.002 kg of AlCl3 were added, the reaction temperature was raised to 85 °C, and the mixture was refluxed for 8 h. After centrifugation, the mixture was washed with tetrahydrofuran, centrifuged again, and dried to obtain hyperbranched triazine-grafted titanium dioxide.
[0058] Preparation Example 8
[0059] 1 kg of titanium dioxide was weighed and dispersed in 10 kg of methanol. After stirring evenly, γ-aminopropyltriethoxysilane was dispersed in the above titanium dioxide methanol solution at a mass ratio of 2:5. The mixture was stirred and reacted at 45 °C for 12 h. After centrifugation, the mixture was washed three times with methanol and dried under vacuum at 70 °C for 6 h to obtain modified titanium dioxide.
[0060] Preparation Example 9
[0061] 1 kg of titanium dioxide was weighed and dispersed in 15 kg of methanol. After stirring evenly, γ-aminopropyltriethoxysilane was dispersed in the above titanium dioxide methanol solution at a mass ratio of 2:8. The mixture was stirred and reacted at 55 °C for 16 h. After centrifugation, the mixture was washed three times with methanol and dried under vacuum at 70 °C for 6 h to obtain modified titanium dioxide.
[0062] Preparation example of modified perlite
[0063] Preparation Example 10
[0064] Weigh 20 kg of perlite, wash it three times with deionized water, dry it at 60°C for 1 hour, then add it to 50 kg of dimethylsiloxane solution diluted with toluene, stir it evenly at room temperature, let it stand for 1 hour, filter it, and dry it in a pinhole drying oven at 60°C to obtain hydrophobically modified perlite.
[0065] Preparation Example 11
[0066] Weigh 20 kg of perlite, wash it three times with deionized water, dry it at 70°C for 3 hours, then add it to 50 kg of dimethylsiloxane solution diluted with toluene, stir it evenly at room temperature, let it stand for 3 hours, filter it, and dry it in a pinhole drying oven at 80°C to obtain hydrophobically modified perlite.
[0067] Example
[0068] Example 1
[0069] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 15 kg of emulsion, 0.5 kg of modified titanium dioxide prepared in Preparation Example 1, 45 kg of filler, 0.6 kg of thickener, 0.6 kg of defoamer, 0.3 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 34.3 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0070] Add water, dispersant, and wetting agent to a container in the specified proportions and disperse at 300 rpm. Slowly add defoamer and stir for 5 minutes. Add pH adjuster and stir at 600 rpm for 10 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 5 minutes. Add modified titanium dioxide and modified perlite and adjust the stirring speed to 1000 rpm and stir for 1 hour. Finally, add graded sand and colored rock sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0071] Example 2
[0072] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 20 kg of emulsion, 1.5 kg of modified titanium dioxide prepared in Preparation Example 1, 60 kg of filler, 1 kg of thickener, 0.8 kg of defoamer, 0.5 kg of wetting agent, 0.7 kg of dispersant, 2.2 kg of film-forming aid, 1.2 kg of antifreeze, 0.2 kg of mildew inhibitor, 0.15 kg of pH adjuster, and 11.75 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0073] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0074] Example 3
[0075] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0076] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0077] Example 4
[0078] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:5; and the mass ratio of graded sand to colored rock sand is 1:1.
[0079] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0080] Example 5
[0081] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:1; the mass ratio of graded sand to colored rock sand is 1:1.
[0082] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0083] Example 6
[0084] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.2 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.4 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0085] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0086] Example 7
[0087] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 2, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0088] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0089] Example 8
[0090] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 3, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0091] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0092] Example 9
[0093] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 4, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0094] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0095] Example 10
[0096] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 5, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0097] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0098] Example 11
[0099] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 6, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0100] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0101] Example 12
[0102] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 7, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0103] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0104] Example 13
[0105] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 11; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0106] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0107] Example 14
[0108] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0109] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide, modified perlite, graded sand, and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0110] Example 15
[0111] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 8, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0112] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0113] Example 16
[0114] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 9, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0115] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0116] Comparative Example
[0117] Comparative Example 1
[0118] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg emulsion, 1 kg titanium dioxide, 50 kg filler, 0.8 kg thickener, 0.6 kg defoamer, 0.4 kg wetting agent, 0.5 kg dispersant, 2 kg film-forming aid, 1 kg antifreeze, 0.1 kg mildew inhibitor, 0.1 kg pH adjuster, and 25.5 kg water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0119] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0120] Comparative Example 2
[0121] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler includes graded sand, colored rock sand, and perlite; the mass ratio of modified titanium dioxide to perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0122] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and colored rock sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0123] Comparative Example 3
[0124] A lightweight stone-like interior wall paint comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 25.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and modified perlite prepared in Preparation Example 10; the mass ratio of modified perlite, graded sand, and colored rock sand is 1:1:1.
[0125] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0126] Comparative Example 4
[0127] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of mildew inhibitor, 0.1 kg of pH adjuster, and 26.5 kg of water; wherein the filler comprises graded sand, colored rock sand, and 2 kg of modified perlite prepared in Preparation Example 10; the mass ratio of graded sand to colored rock sand is 1:1.
[0128] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 10 minutes. Add modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0129] Comparative Example 5
[0130] A lightweight stone-like paint for interior walls comprises the following components in parts by weight: 18 kg of emulsion, 1 kg of modified titanium dioxide prepared in Preparation Example 1, 50 kg of filler, 0.8 kg of thickener, 0.6 kg of defoamer, 0.4 kg of wetting agent, 0.5 kg of dispersant, 2 kg of film-forming aid, 1 kg of antifreeze, 0.1 kg of pH adjuster, and 25.6 kg of water; wherein the filler includes graded sand, colored rock sand, and modified perlite prepared in Preparation Example 8; the mass ratio of modified titanium dioxide to modified perlite is 1:2; and the mass ratio of graded sand to colored rock sand is 1:1.
[0131] Add water, dispersant, and wetting agent to a container at 500 rpm for dispersion. Slowly add defoamer and stir for 10 minutes. Add pH adjuster and stir at 900 rpm for 30 minutes. Add film-forming aid, emulsion, antifreeze, and thickener in sequence and stir for 10 minutes. Add modified titanium dioxide and modified perlite and adjust the speed to 1200 rpm and stir for 2.5 hours. Finally, add graded sand and rock colored sand and continue stirring for 3 hours to obtain lightweight stone-like paint for interior walls.
[0132] Performance testing
[0133] The performance testing of the lightweight stone-like paint for interior walls obtained in the examples and comparative examples was conducted using the following methods:
[0134] a. Technical performance testing: in accordance with JGT24-2018 Synthetic resin emulsion sand-textured architectural coatings (interior wall standard);
[0135]
[0136]
[0137] b. Gloss test: The gloss value at 60° of the paint film shall be tested according to the method specified in GB / T9754-2007 Determination of 20°, 60° and 85° specular gloss of paint film without metallic pigments.
[0138] c. Antibacterial test: Tested according to GB / T 21866-2008 standard;
[0139]
[0140] d. Antifungal test: Tested according to GB / T 1741-2020 standard;
[0141]
[0142] Level 0: Not growing; Level I: Growth coverage area less than 10%; Level II: Growth coverage area greater than 10%;
[0143] The comparison results are shown in Table 1 below:
[0144] Table 1 Performance Test Results
[0145]
[0146]
[0147] As can be seen from Table 1, the lightweight stone-like paint for interior walls obtained in the above embodiments can all achieve the technical indicators of flexibility for synthetic resin emulsion architectural coatings with no cracks in diameter of 50mm.
[0148] As can be seen from Comparative Examples 1 and 4 and Examples 3-12, the aging resistance, bonding strength, and water absorption performance of the lightweight stone-like paint for interior walls prepared in Examples 3-12 are all superior to those of Comparative Example 1. It is believed that by adding modified titanium dioxide, the dispersibility of nano-titanium dioxide in the stone-like paint is improved, significantly enhancing the covering effect of the stone-like paint, greatly improving the crack resistance of the stone-like paint, and also improving the gloss, bonding strength, and stability of the stone-like paint, as well as enhancing the waterproof performance of the stone-like paint. In addition, the modified titanium dioxide has a bactericidal function, inhibiting and killing microorganisms that come into contact with it, making the antibacterial and antifungal properties of the stone-like paint better. As can be seen from Examples 7-10 and Comparative Examples 11-12, the ratio range of titanium dioxide to diethylenetriamine disclosed in this application can ensure the number and grafting degree of active functional groups in the hyperbranched compound precursor, fully guarantee the dispersibility of titanium dioxide in the stone paint, increase the bonding strength and crack resistance of the stone paint, and ensure the antibacterial and anti-fouling effect of the lightweight stone paint for interior walls.
[0149] Comparing Examples 15-16 and Comparative Example 1, it can be seen that the aging resistance, bonding strength, and water absorption performance of the lightweight stone-like paint for interior walls prepared in Examples 15-16 are all better than those of Comparative Example 1. The applicant believes that modifying titanium dioxide particles with silane coupling agents can improve their dispersibility and stability in the coating, ensure the dispersibility of titanium dioxide in the stone-like paint, and increase the antibacterial and anti-fouling effects of the stone-like paint.
[0150] Comparing Examples 3-5 and Comparative Examples 2-3, it can be seen that the aging resistance, bonding strength, and water absorption performance of the lightweight stone-like paint for interior walls prepared in Examples 3-5 are all superior to those in Comparative Examples 2-3. It is believed that the thorough mixing of a certain proportion of modified titanium dioxide and modified perlite ensures that the modified titanium dioxide is more fully dispersed, and the modified perlite can increase the filling density, giving the stone-like paint material a certain degree of waterproof performance. This further ensures that the stone-like paint material does not become moldy in humid environments, improves the weather resistance of the stone-like paint material, and gives the stone-like paint excellent antibacterial effects.
[0151] Comparing Examples 3 and 14, it can be seen that the aging resistance, bonding strength, and water absorption performance of the lightweight stone-like paint for interior walls prepared in Example 3 are all superior to those in Example 14. It is believed that by adjusting the feeding method and conditions in the preparation process of the stone-like paint, the modified titanium dioxide and modified perlite are added together and fully mixed, ensuring that the modified titanium dioxide is more fully dispersed, and the modified perlite can increase the filling density, giving the stone-like paint material a certain degree of waterproof performance, so that the lightweight stone-like paint for interior walls does not peel or mold, and ensures the antibacterial and anti-fouling effects of the lightweight stone-like paint for interior walls.
[0152] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A lightweight stone-like paint for interior walls, characterized in that: The product comprises the following components by weight percentage: emulsion 15%-20%, modified titanium dioxide 0.5%-1.5%, filler 45%-60%, thickener 0.6%-1%, defoamer 0.6%-0.8%, wetting agent 0.3%-0.5%, dispersant 0.5%-0.7%, film-forming aid 2%-2.2%, antifreeze 1%-1.2%, mildew inhibitor 0.1%-0.2%, pH adjuster 0.1%-0.15%, and the balance being water; The modified titanium dioxide is hyperbranched triazine-grafted titanium dioxide. The specific synthesis steps include: dispersing titanium dioxide and diethylenetriamine in tetrahydrofuran, adding 4-dimethylaminopyridine, and reacting at 60-75℃ for 3-5 hours to obtain titanium dioxide grafted with the precursor diethylenetriamine; dispersing cyanuric chloride and diethylenetriamine-grafted titanium dioxide in tetrahydrofuran, reacting at 20-30℃ for 2-5 hours, and then, under the conditions of N,N-dicyclohexylcarbodiimide and AlCl3, raising the reaction temperature to 60-85℃ and refluxing for 5-8 hours to obtain hyperbranched triazine-grafted titanium dioxide. The mass ratio of titanium dioxide to diethylenetriamine is 1:3-8; the mass ratio of cyanuric chloride to diethylenetriamine-grafted titanium dioxide is 0.8-5:
1. The filler includes graded sand, colored rock sand, and modified perlite. The modified perlite is prepared by weighing perlite, drying it at 60-70℃ for 1-3 hours, adding it to a dimethylsiloxane solution diluted with toluene, stirring evenly at room temperature, letting it stand for 1-3 hours, filtering, and drying it at 60-80℃ to obtain modified perlite. The mass ratio of modified titanium dioxide to modified perlite is 1:2-5.
2. The lightweight stone-like paint for interior walls according to claim 1, characterized in that: The emulsion is an acrylic / styrene copolymer emulsion; the thickener is hydroxyethyl cellulose ether; the defoamer is a silica-based defoamer; the wetting agent is a nonionic surfactant; the dispersant is sodium polycarboxylate; the film-forming aid is 12-carbon alcohol ester; the antifreeze agent is ethylene glycol; the fungicide is a water-based fungicide; and the pH adjuster is an organic alcohol amine.
3. A method for preparing a lightweight stone-like paint for interior walls according to any one of claims 1-2, characterized in that: The process includes the following steps: Disperse water, dispersant, and wetting agent in a container at 300-500 rpm according to the specified ratio; slowly add defoamer and stir for 5-10 minutes; add pH adjuster and stir at 600-900 rpm for 10-30 minutes; add film-forming aid, emulsion, antifreeze, mildew inhibitor, and thickener in sequence and stir for 5-10 minutes; add modified titanium dioxide and modified perlite and adjust the stirring speed; finally, add graded sand and colored rock sand to obtain the lightweight stone-like paint for interior walls.
4. The method for preparing a lightweight stone-like paint for interior walls according to claim 3, characterized in that: The condition for adjusting the stirring speed is to stir at 1000-1200 rpm for 1-2.5 hours.