A kind of light real stone paint

Abstract

The present invention relates to the technical field of real stone paint, and particularly to a lightweight real stone paint. Ordinary commercially available real stone paints have a high specific gravity and a large paint consumption, which do not meet the requirements of energy conservation and environmental protection in modern society. In view of the above problems, the present invention provides a lightweight real stone paint. The real stone paint formula uses hollow glass microspheres with a relatively light specific gravity and ultra-fine colored rock flakes as fillers, significantly reducing the usage amount of the real stone paint slurry, and significantly reducing the overall specific gravity of the real stone paint. For a wall area of 10,000 square meters and a coating thickness of 1-1.5 mm, at most about 5 tons of real stone paint need to be consumed, and the usage amount of the real stone paint can be reduced to about 1 / 2 of the original usage amount.

Description

Technical Field

[0001] The present invention relates to the technical field of real stone paint, and in particular to a lightweight real stone paint. Background Art

[0002] At present, in order to achieve the effect of natural stone materials in buildings, natural stones are commonly used. However, due to the limitations of natural ores, the colors and patterns are uneven after decoration and cannot be refurbished. Moreover, they are difficult to mine and process, expensive; they have a large unit volume weight, a large load on the wall, and are not suitable for the decoration of lightweight buildings. In addition, the construction difficulty is large. Especially for the corner parts, special processing is required. Sealant needs to be added to the gaps between the stones. After the construction is completed, the whole needs to be waxed.

[0003] The spraying effect of real stone paint is solemn and elegant, which can fully display the rich texture of natural stones. It uses natural crushed stones to show colors that never fade and maintain the long-term beautiful texture of the wall. The application of real stone paint is very extensive. Its decorative effect is comparable to that of stones, and it is more suitable for shaping various artistic shapes than stones. It can be used as exterior walls and reliefs, and special-shaped wall decorations such as beams and columns. It is suitable for making exterior wall murals, with the color effects of granite, marble, and hemp stone, and can obtain a realistic effect.

[0004] Ordinary commercially available real stone paints have a high specific gravity. For a wall area of 10,000 square meters and a coating thickness of 1-1.5 mm, at least 10 tons of real stone paint are required, which does not meet the requirements of energy conservation and environmental protection in modern society. In addition, ordinary commercially available real stone paints generally do not have antibacterial properties and are prone to mildew in the atmospheric environment, causing the surface of the paint film to become moldy and black, seriously affecting the beautiful decorative effect of the paint film. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that ordinary commercially available real stone paints have a high specific gravity and a large consumption of paint, which does not meet the requirements of energy conservation and environmental protection in modern society. The present invention provides a lightweight real stone paint, which includes the following components in parts by weight:

[0006]

[0007] Specifically, the silicone-acrylic emulsion includes at least one of Changshu Badifu Technology Co., Ltd. - RS-996KD, Jiangsu Shengda New Material Technology Co., Ltd. SD-528, and Shanghai Baolijia Chemical Co., Ltd. BLJ-998AD.

[0008] Specifically, the average particle size of the ultra-fine colored rock chips is 30-40 mesh.

[0009] Specifically, the particle size of the quartz sand is 80-120 mesh.

[0010] Specifically, the quartz sand is purchased from Shijiazhuang Jinyuan Mining Co., Ltd.

[0011] Specifically, the particle size of the hollow glass microspheres is 80 - 120 mesh.

[0012] Specifically, the polyurethane thickener is a low - shear polyurethane thickener.

[0013] Specifically, the low - shear polyurethane thickener includes at least one of Rohm and Haas RM - 12W, Xintike Chemistry TR - 209, and Elementis Specialties 299.

[0014] Specifically, for the antibacterial agent, its preparation method includes the following steps:

[0015] (1) Place 1 g of KH550 in 500 mL of N,N - dimethylformamide. While stirring at room temperature, dropwise add isophorone diisocyanate. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the amino group in the reaction system disappears on the spectrum. Stop dropping, and the reaction ends. Then, perform vacuum distillation on the reaction product to remove the solvent. Then, place it in a vacuum dryer at 80 °C for 4 h to obtain intermediate product I.

[0016] (2) Under N2 protection, mix 2 g of intermediate product I, 10 mg of dibutyltin dilaurate, and 1000 mL of N,N - dimethylformamide evenly by stirring. Then, raise the temperature of the reaction system to 100 °C. While stirring, dropwise add a N,N - dimethylformamide solution of polyethylene glycol 200 with a concentration of 0.2 mol / L. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the isocyanate group in the reaction system disappears on the spectrum. Stop dropping, and the reaction ends. After the reaction ends, concentrate the reaction solution, slowly add 1000 mL of dichloromethane, filter the reaction solution, remove the filtrate, then perform vacuum distillation on the filtered product to remove the solvent, and then place it in a vacuum dryer at 80 °C for 4 h to obtain intermediate product II.

[0017] (3) Place 1 g of intermediate product II in 500 mL of N,N - dimethylformamide. While stirring at room temperature, dropwise add isophorone diisocyanate. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the hydroxyl group in the reaction system disappears on the spectrum. Stop dropping, and the reaction ends to obtain a solution containing intermediate product III.

[0018] (4) Raise the temperature of the solution containing intermediate product III obtained in step (3) to 110 °C. While stirring, dropwise add 5 - amino - 1 - pentanol. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the isocyanate group in the reaction system disappears on the spectrum. Stop dropping, and the reaction ends to obtain a solution containing intermediate product IV.

[0019] (5) Add 0.3 g of graphite oxide to 300 mL of NMP, and ultrasonically disperse it evenly to obtain a GO suspension. Heat the solution containing intermediate product Ⅳ obtained in step (4) to 110 °C, and then add the GO suspension to the solution containing intermediate product Ⅳ dropwise while stirring, and monitor the progress of the reaction by FTIR. Stir the reaction until the amino absorption peak in the reaction system disappears, stop dropping, and end the reaction. Then, carry out vacuum distillation on the reaction product to remove the solvent, and then centrifuge the reaction product and wash it repeatedly with ethanol 6 times. After drying in a blast dryer, the antibacterial agent is obtained.

[0020] Specifically, the film-forming aid includes at least one of Texanol from the United States, Coasol from Dow, DPnB from Dow, and Fexanol 1951 from Spain.

[0021] Specifically, the dispersant is a polycarboxylate ammonium salt dispersant.

[0022] Specifically, the polycarboxylate ammonium salt dispersant includes at least one of polycarboxylate ammonium salt dispersant 5027, daddispersant6227, and SN-Dispersant5029 from San Nopco of Japan.

[0023] Specifically, the wetting agent is a non-ionic wetting agent.

[0024] Specifically, the non-ionic wetting agent includes at least one of Degussa substrate wetting agent WET500, PE-100 from Cognis of Germany, and LY-206 from Shangzhou of Foshan.

[0025] Specifically, the defoaming agent is a metal soap defoaming agent.

[0026] Specifically, the metal soap defoaming agent includes at least one of SN-NXZ from San Nopco and SN-DEFOAMERNXZ202 from Kayin Chemical Industry.

[0027] Specifically, the pH regulator includes at least one of 2-amino-2-methyl-1-propanol, aqueous potassium hydroxide solution, and ammonia water.

[0028] Specifically, a kind of light real stone paint, the preparation method includes the following steps:

[0029] According to the formula amount, mix each raw material and stir evenly to obtain the light real stone paint.

[0030] The beneficial effects of the present invention are as follows:

[0031] (1) In the real stone paint formula obtained by the present invention, a self-made antibacterial agent is added. The antibacterial agent contains a graphene antibacterial fragment in its molecular structure, which can effectively play the role of preventing mildew and antibacterial, and prevent the paint film from mildewing and turning black;

[0032] (2) The molecular structure of the self-made antibacterial agent of the present invention also contains organosilicon segments, ethoxy segments and polyurethane segments, which makes the structure of the obtained antibacterial agent have good compatibility with the silicone-acrylic emulsion, low-shear polyurethane thickener and hydroxyethyl cellulose in the stone paint material system. In addition, the problem of easy agglomeration of graphene is solved, which helps to improve the comprehensive performance of the stone paint film;

[0033] (3) The obtained stone paint formula of the present invention uses hollow glass microspheres with a relatively light specific gravity and ultrafine colored rock flakes as fillers, significantly reducing the usage amount of the stone paint slurry, and significantly reducing the overall specific gravity of the stone paint. For a wall area of 10,000 square meters and a coating thickness of 1-1.5 mm, at most about 5 tons of stone paint are required, and the usage amount of the stone paint can be reduced to about 1 / 2 of the original usage amount;

[0034] (4) The obtained stone paint formula of the present invention uses a low-shear polyurethane thickener, which is beneficial to construction on the one hand and can effectively improve the thermal storage performance and water resistance of the stone paint film on the other hand. Detailed implementation mode

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0036] The silicone-acrylic emulsion RS-996KD used in the following embodiments of the present invention is purchased from at least one of Changshu Badfu Technology Co., Ltd., SD-528 is purchased from Jiangsu Shengda New Materials Technology Co., Ltd., and BLJ-998AD is purchased from Shanghai Baolijia Chemical Co., Ltd.

[0037] The average particle size of the ultrafine colored rock flakes used in the following embodiments of the present invention is 30 mesh, and it is purchased from Hebei Beng Mineral Products Co., Ltd.

[0038] The particle size of the quartz sand used in the following embodiments of the present invention is 120 mesh, and it is purchased from Shijiazhuang Jinyuan Mining Co., Ltd.

[0039] The particle size of the hollow glass microspheres used in the following embodiments of the present invention is 80 mesh, and it is purchased from Zhengzhou Shenglaite Hollow Microsphere New Materials Co., Ltd.

[0040] The sodium-based bentonite used in the following embodiments of the present invention has a particle size of 325 mesh and is purchased from Anji Yiguo Bentonite Factory.

[0041] The antibacterial agent used in the following embodiments of the present invention is prepared as follows:

[0042] (1) 1 g of KH550 was placed in 500 mL of N,N-dimethylformamide, and isophorone diisocyanate was added dropwise while stirring at room temperature. The progress of the reaction was monitored by FTIR. The stirring reaction was continued until the absorption peak of the amino group in the reaction system disappeared in the spectrum. The addition was stopped, and the reaction ended. Then, the reaction product was subjected to vacuum distillation to remove the solvent, and then placed in a vacuum oven at 80 °C for 4 h to obtain intermediate product I;

[0043] (2) Under N2 protection, 2 g of intermediate product I, 10 mg of dibutyltin dilaurate, and 1000 mL of N,N-dimethylformamide were stirred and mixed evenly. Then, the temperature of the reaction system was raised to 100 °C, and a N,N-dimethylformamide solution of polyethylene glycol 200 with a concentration of 0.2 mol / L was added dropwise while stirring. The progress of the reaction was monitored by FTIR. The stirring reaction was continued until the absorption peak of the isocyanate group in the reaction system disappeared in the spectrum. The addition was stopped, and the reaction ended. After the reaction ended, the reaction solution was concentrated, 1000 mL of dichloromethane was slowly added, the reaction solution was filtered, the filtrate was removed, and then the filtered product was subjected to vacuum distillation to remove the solvent. Then, it was placed in a vacuum oven at 80 °C for 4 h to obtain intermediate product II;

[0044] (3) 1 g of intermediate product II was placed in 500 mL of N,N-dimethylformamide, and isophorone diisocyanate was added dropwise while stirring at room temperature. The progress of the reaction was monitored by FTIR. The stirring reaction was continued until the absorption peak of the hydroxyl group in the reaction system disappeared in the spectrum. The addition was stopped, and the reaction ended to obtain a solution containing intermediate product III;

[0045] (4) The solution containing intermediate product III obtained in step (3) was heated to 100 °C, and 5-amino-1-pentanol was added dropwise while stirring. The progress of the reaction was monitored by FTIR. The stirring reaction was continued until the absorption peak of the isocyanate group in the reaction system disappeared in the spectrum. The addition was stopped, and the reaction ended to obtain a solution containing intermediate product IV;

[0046] (5) 0.3 g of graphite oxide (obtained by the improved Hummers method) was added to 300 mL of NMP and ultrasonically dispersed evenly to obtain a GO suspension. The solution containing intermediate product IV obtained in step (4) was heated to 110 °C, and then the GO suspension was added to the solution containing intermediate product IV by dropwise addition while stirring. The progress of the reaction was monitored by FTIR. The stirring reaction was continued until the absorption peak of the amino group in the reaction system disappeared. The addition was stopped, and the reaction ended. Then, the reaction product was subjected to vacuum distillation to remove the solvent, and then the reaction product was centrifuged and washed repeatedly with ethanol 6 times. After drying in a blast dryer, the antibacterial agent was obtained.

[0047] The pH regulator used in the following examples of the present invention is 2-amino-2-methyl-1-propanol.

[0048] Example 1

[0049] A kind of light texture real stone paint, by weight, the composition is as follows:

[0050]

[0051]

[0052] Example 2

[0053] A kind of light texture real stone paint, by weight, the composition is as follows:

[0054]

[0055]

[0056] Example 3

[0057] A kind of light texture real stone paint, by weight, the composition is as follows:

[0058]

[0059] Comparative Example 1 is the same as Example 1, the difference is that the polyurethane thickener used in Comparative Example 1 is a water-based high-shear polyurethane thickener PT-18C.

[0060] Comparative Example 2 is the same as Example 1, the difference is that the antibacterial agent used in Comparative Example 2 is prepared according to the following steps:

[0061] Add 0.3 g of graphite oxide to 300 mL of NMP, ultrasonically disperse evenly to obtain a GO suspension, add 1 g of KH550, stir and react at 100 °C for 12 h. After the reaction is completed, centrifuge the reaction product, and wash it repeatedly with ethanol 6 times. Finally, dry it in a blast dryer to obtain KH550-modified GO.

[0062] Comparative Example 3 is the same as Example 1, the difference is that the antibacterial agent used in Comparative Example 3 is prepared according to the following steps:

[0063] (1) Place 1 g of KH550 in 500 mL of N,N-dimethylformamide, dropwise add isophorone diisocyanate while stirring at room temperature, monitor the progress of the reaction by FTIR, stir and react until the absorption peak of the amino group in the reaction system disappears in the spectrum, stop dropping, and the reaction ends to obtain a reaction solution containing intermediate product I;

[0064] (2) The reaction solution containing intermediate I obtained in step (1) is heated to 100 °C, and 5-amino-1-pentanol is added dropwise with stirring. The progress of the reaction is monitored by FTIR. Stir the reaction until the absorption peak of isocyanate groups in the reaction system disappears in the spectrum, stop adding the dropwise, and the reaction ends to obtain a solution containing intermediate II;

[0065] (3) 0.3 g of graphite oxide is added to 300 mL of NMP and ultrasonically dispersed evenly to obtain a GO suspension. The solution containing intermediate II obtained in step (4) is heated to 110 °C, and then the GO suspension is added to the solution containing intermediate II by dropwise addition with stirring. The progress of the reaction is monitored by FTIR. Stir the reaction until the absorption peak of amino groups in the reaction system disappears, stop adding the dropwise, and the reaction ends. Then, the solvent is removed by vacuum distillation from the reaction product. After that, the reaction product is centrifuged and washed repeatedly with ethanol 6 times. After drying in a blast dryer, the antibacterial agent is obtained.

[0066] Performance testing

[0067] The raw materials of Examples 1-3 and Comparative Examples 1-3 are mixed according to the formula amounts, stirred at a speed of 600 rpm for 20 min at room temperature, and mixed evenly to prepare the light real stone paints of Examples 1-3 and Comparative Examples 1-3. The relevant performance tests are carried out on the paint films obtained in Examples 1-3 and Comparative Examples 1-3, and the test results are shown in Table 1.

[0068] The light real stone paints obtained in Examples 1-3 and Comparative Examples 1-3 of the present invention are sprayed on the mortar block board, the spraying pressure is 0.8 Pa / cm 2 , the spray gun orifice diameter is 8 mm, the distance between the gun muzzle and the wall surface is 60 cm, sprayed twice, and the spraying thickness each time is 1 mm, and the total thickness of the paint film is 2 mm.

[0069] Cured at a temperature of 23 °C and a humidity of 65% for 14 days, and then the stain resistance, temperature resistance, tensile bond strength tests and the tensile bond strength test after the specimen is immersed in water are carried out according to JG / T 24-2000 "Synthetic resin emulsion sand-textured architectural coatings".

[0070] The thermal storage stability refers to the test method for the storage stability of coatings in GB-T 6753.3-1986.

[0071] The resistance to artificial aging performance is tested according to GB / T 23987-2009.

[0072] The antibacterial property is tested according to the chemical industry standard of the People's Republic of China HG / T 3950-2007 "Antibacterial coatings".

[0073] Table 1

[0074]

[0075] The above description is illustrative rather than restrictive to the present invention. Those of ordinary skill in the art understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all of them will fall within the protection scope of the present invention.

Claims

1. A light real stone paint, characterized in that, Comprising the following components by weight parts: Silicone-acrylic emulsion 15 - 18 parts Ultra-fine colored rock flakes 3 - 5 parts Quartz sand 50 - 55 parts Hollow glass microspheres 10 - 15 parts Sodium-based bentonite 0.1 - 0.2 parts Hydroxyethyl cellulose 0.1 - 0.2 parts Polyurethane 0.1 - 0.2 parts Antibacterial agent 0.2 - 0.3 parts Propylene glycol 1 - 1.5 parts Film-forming aid 1 - 1.5 parts Dispersant 0.05 - 0.1 parts Wetting agent 0.05 - 0.1 parts Defoaming agent 0.05 - 0.1 parts pH regulator 0.1 - 0.2 parts Water 9 - 11 parts; The preparation method of the antibacterial agent comprises the following steps: (1) Place 1 g of KH550 in 500 mL of N,N-dimethylformamide, and while stirring at room temperature, dropwise add isophorone diisocyanate. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the amino group in the reaction system disappears in the spectrum, then stop dropping. After the reaction ends, perform reduced-pressure distillation on the reaction product to remove the solvent, and then place it in a vacuum dryer at 80 °C for 4 h to obtain intermediate product I; (2) Under N2 protection, stir and mix 2 g of intermediate product I, 10 mg of dibutyltin dilaurate, and 1000 mL of N,N-dimethylformamide evenly. Then raise the temperature of the reaction system to 100 °C, and while stirring, dropwise add an N,N-dimethylformamide solution of polyethylene glycol 200 with a concentration of 0.2 mol / L. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the isocyanate group in the reaction system disappears in the spectrum, then stop dropping. After the reaction ends, concentrate the reaction solution, slowly add 1000 mL of dichloromethane, filter the reaction solution, remove the filtrate, and then perform reduced-pressure distillation on the filtered product to remove the solvent. Then place it in a vacuum dryer at 80 °C for 4 h to obtain intermediate product II; (3) Place 1 g of intermediate product II in 500 mL of N,N-dimethylformamide, and while stirring at room temperature, dropwise add isophorone diisocyanate. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the hydroxyl group in the reaction system disappears in the spectrum, then stop dropping. After the reaction ends, obtain a solution containing intermediate product III; (4) Raise the temperature of the solution containing intermediate product III obtained in step (3) to 110 °C, and while stirring, dropwise add 5-amino-1-pentanol. Monitor the progress of the reaction using FTIR. Stir the reaction until the absorption peak of the isocyanate group in the reaction system disappears in the spectrum, then stop dropping. After the reaction ends, obtain a solution containing intermediate product IV; (5) Add 0.3 g of graphite oxide to 300 mL of NMP, ultrasonically disperse it evenly to obtain a GO suspension. Heat the solution containing intermediate product Ⅳ obtained in step (4) to 110 °C, and then add the GO suspension to the solution containing intermediate product Ⅳ by dropwise addition while stirring. Monitor the progress of the reaction by FTIR. Stir the reaction until the amino absorption peak in the reaction system disappears, stop dropwise addition, and end the reaction. Then, perform vacuum distillation on the reaction product to remove the solvent. After that, centrifuge the reaction product and wash it repeatedly with ethanol 6 times. After drying in a blast dryer, the antibacterial agent is obtained.

2. A kind of light real stone paint according to claim 1, characterized in that, The silicone-acrylic emulsion includes at least one of RS-996KD, SD-528, and BLJ-998AD.

3. A kind of light real stone paint according to claim 1, characterized in that The polyurethane is a low-shear polyurethane thickener.

4. A kind of light real stone paint according to claim 1, characterized in that, The film-forming aid includes at least one of American Texanol, Dow Coasol, Dow DPnB, and Spanish Fexanol 1951.

5. A light real stone paint according to claim 1, characterized in that, The dispersant is a polycarboxylate ammonium salt dispersant.

6. A kind of light real stone paint according to claim 1, characterized in that, The wetting agent is a non-ionic wetting agent.

7. A kind of light real stone paint according to claim 1, characterized in that, The defoamer is a metal soap defoamer.

8. A light real stone paint according to claim 1, characterized in that, The pH regulator includes at least one of 2-amino-2-methyl-1-propanol, aqueous potassium hydroxide solution, and ammonia water.

9. A kind of light real stone paint according to any one of claims 1-8, characterized in that, The preparation method includes the following steps: According to the formula amount, mix and stir each raw material evenly to obtain the light real stone paint.

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