Preparation method of diatom mud coating

A kind of preparation method of diatom mud paintTechnical field

[0001] The present invention belongs to the field of building decoration materials, and specifically relates to a preparation method of diatom mud paint.

Background technique

[0002] Diatom mud is a new type of functional interior decoration wall material. The raw material comes from the siliceous biological sedimentary rock formed by the remains of marine algae plants. Its unique molecular sieve structure determines that it has strong physical adsorption and ion exchange. Function: Using certain technology, it can decompose formaldehyde, benzene gas and radioactive substances in the air through absorption and convert them into harmless substances. Diatom mud paint is a kind of interior wall latex paint coating containing diatom mud. It can absorb and degrade indoor formaldehyde by using diatom materials with super adsorption capacity in the formulation, so it can meet the requirements of decoration Nature and environmental protection. Because diatom mud is healthy and environmentally friendly, it not only has good decorative properties, but also has functionality. It is a new generation of interior decoration materials that replace wallpaper and latex paint, and it has a wide range of applications. It can be applied to the following places: family (living room, bedroom, study, baby room, ceiling, etc.), apartment, kindergarten, nursing home, hospital, nursing home, club, theme club, high-end hotel, resort hotel, office building, style restaurant Wait. However, the existing diatom mud paint still has the problems of poor performance such as air purification and sterilization.

Summary of the invention

[0003] The technical problem to be solved by the present invention: in view of the poor performance of the current diatom mud coatings, such as air purification and sterilization, the present invention provides a method for preparing diatom mud coatings.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A preparation method of diatom mud paint, the preparation method includes the following steps: (1) According to the mass ratio 1: 4~6:3 , Put the hexacyclic stone, diatomaceous earth and ethanol solution into a ball mill for ball milling, collect the ball milled product, and mix the ball milled product, tetrabutyl titanate, and ethanol solution in a mass ratio of 4-6:2:5-7. Then add 10-15% nitric acid solution of the ball milled mass, ultrasonically shake, and stand; (2) After the standing is finished, freeze-dry, collect the dried material, and take 90~100 parts of water and 45~50 parts by weight. Parts of dried substance, 30~33 parts of hydrogen-containing silicone oil, 20~25 parts of diphenylmethylsilane, 16~19 parts of methyl methacrylate, 15~17 parts of chitosan, 13~18 parts of N-vn methyl Acrylamide, 5~8 parts of ethylene glycol and 1-3 parts of catalyst; (3) First put water, methyl methacrylate, N-vat methacrylamide, and chitosan into the reactor , at 40^45Ό Perform preheating, then add the dried substance, hydrogen-containing silicone oil, diphenylmethylsilane, ethylene glycol and catalyst, and heat to 80~85 Ό, Use nitrogen to protect and stir the reaction; (4) After the stirring reaction, cool to room temperature, collect the reaction mixture to obtain the diatom mud paint base material, by weight, take 70 to 75 parts of the diatom mud paint base material, Put 14~17 parts of additives, 9~12 parts of benzoin dimethicone, 4~7 parts of dispersant, 0.4~1.1 parts of methyl cellulose into a mixer and stir and mix, collect and stir the mixture to obtain diatom mud paint.

[0005] The catalyst is chloric acid.

[0006] In the step (4), the additive is a mixture of lime calcium and attapulgite at a mass ratio of 1:2.

[0007] In the step (4), the dispersant is any one of sodium polyacrylate and modified polyacrylate.

[0008] Compared with other methods, the present invention has the following beneficial technical effects: The present invention uses hexacyclic stone as modified particles to be mixed with diatomaceous earth to modify the diatomite, and the hexacyclic stone is used to

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Physical properties, improve the release function of diatomite negative ions, and enhance the self-cleaning ability. Then, in the process of synthesizing nano-titanium dioxide, modified diatomaceous earth is added to make the formed nano-titanium dioxide use modified diatomaceous earth as a carrier , Adsorbed on its surface to improve the antifouling ability of diatomaceous earth, and then mixed with hydrogen-containing oil, diphenylmethyl silane, methyl methacrylate under the action of the catalyst to form a silicone acrylic emulsion, and Chitosan is used as a modifier to modify it, and at the same time, chitosan is used as a bridge to make the modified silicone-acrylic emulsion wrap the diatomaceous earth, which improves its purification and sterilization effect, and uses fillers to increase the effect The adsorption performance is improved, the purification effect is further improved, and the photosensitizing effect of benzoin dimethicone and the catalytic effect of titanium dioxide are used to improve the film-forming performance and further increase the stain resistance and antibacterial performance of artificial marble.

Detailed ways

[0009] The choice of catalyst is chloric acid.

[0010] The additives are prepared by mixing ash calcium and attapulgite at a mass ratio of 1:2.

[0011] The choice of dispersant is any one of sodium polyacrylate and modified polyacrylate.

[0012] A preparation method of diatom mud paint, the preparation method includes the following steps: (1) According to the mass ratio of 1: 4 ~ 6: 3, put the hexacyclic stone, diatomaceous earth and ethanol solution into the ball mill to 500Γ/πιΐη is ball milled for 40 πήη, the ball milled material is collected, the ball milled material, tetrabutyl titanate, and the ethanol solution are mixed uniformly in a mass ratio of 4-6:2:5~7, and then a 10-15% nitric acid solution with the mass of the ball milled material is added , Ultrasonic vibration 15 πήη, stand 311; (2) After standing, freeze-dry, collect the dried material, by weight, take 90~100 parts of water, 45~50 parts of dried material, 30~33 parts of hydrogen Silicone oil, 20~25 parts of diphenylmethylsilane, 16~19 parts of methyl methacrylate, 15~17 parts of chitosan, 13~18 parts of N-Vat methacrylamide, 5~8 parts of ethylene glycol And 3 parts of catalyst; (3) First, put water, methyl methacrylate, N-vat methacrylamide, and chitosan into the reaction kettle, preheat for 20 πήη at 40^45Ό, and then add the dried material , Hydrogen-containing silicone oil, diphenylmethyl silane, ethylene glycol and catalyst, heat up to 80~85£, use nitrogen protection, stir the reaction for 3~61ι; (4) After the stirring reaction is over, cool to room temperature and collect the reaction Mixture, get diatom mud paint base material, in parts by weight Calculate, take 70~75 parts of diatom mud paint base material, 14~17 parts of additives, 9~12 parts of benzoin dimethicone, 4~7 parts of dispersant, 0.4~1.1 parts of methyl cellulose into the mixer Stir and mix, and collect the stirring mixture to obtain the diatom mud paint.

[0013] Example 1 The choice of catalyst is chloric acid.

[0014] The additives are prepared by mixing ash calcium and attapulgite at a mass ratio of 1:2.

[0015] The choice of dispersant is sodium polyacrylate.

[0016] A preparation method of diatom mud paint, the preparation method includes the following steps: (1) According to the mass ratio of 1:6:3, put the hexacyclic stone, diatomaceous earth and ethanol solution into a ball mill at 500 °C/ πιΐη is ball milled for 40 πήη, the pulverized material is collected, the pulverized material, tetrabutyl titanate, and ethanol solution are mixed uniformly in a mass ratio of 6: 2: 7, and then a 15% nitric acid solution of the mass of the ball milled material is added. (2) After the end of standing, freeze-dry, collect the dried material, and take 90-100 parts of water, 50 parts of the dried material, 33 parts of hydrogen-containing silicone oil, 25 parts of diphenylmethylsilane, 16 parts by weight. ~19 parts of methyl methacrylate, 17 parts of chitosan, 18 parts of N-Vat methacrylamide, 8 parts of ethylene glycol and 3 parts of catalyst; (3) First, water, methyl methacrylate, N- Put the vat methacrylamide and chitosan into the reaction kettle, preheat for 20 μm at 45°, then add the dry matter, hydrogen-containing silicone oil, diphenyl methyl silane, ethylene glycol and catalyst, and heat to 85°. Make

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Protect with nitrogen, stir the reaction 61ι; (4) After the stirring reaction, cool to room temperature, collect the reaction mixture to obtain the diatom mud paint base material, by weight, take 75 parts of the diatom mud paint base material, 17 Parts of additives, 12 parts of benzoin dimethicone, 7 parts of dispersant, and 1.1 parts of methyl cellulose are put into a blender and mixed, and the stirred mixture is collected to obtain the diatom mud paint.

[0017] Example 2 The choice of catalyst was chloric acid.

[0018] The additives are prepared by mixing ash calcium and attapulgite at a mass ratio of 1:2.

[0019] The choice of dispersant is modified polycarboxylate.

[0020] A preparation method of diatom mud paint, the preparation method includes the following steps: (1) According to the mass ratio of 1:5:3, put the hexacyclic stone, diatomaceous earth and ethanol solution into a ball mill at 500 °C/ πιΐη is ball milled for 40 πήη, the ball milled material is collected, the ball milled material, tetrabutyl titanate, and ethanol solution are mixed uniformly according to the mass ratio of 5:2:6, and then a 13% nitric acid solution of the mass of the ball milled material is added, ultrasonically shaken 15 πήη, and left to stand 311 (2) After the end of standing, freeze-dry and collect the dried material. In parts by weight, take 95 parts of water, 48 parts of dried material, 32 parts of hydrogen-containing silicone oil, 23 parts of diphenylmethylsilane, 17 parts of methylbenzene Methyl acrylate, 16 parts of chitosan, 15 parts of N-vat methacrylamide, 6 parts of ethylene glycol and 2 parts of catalyst; (3) First, water, methyl methacrylate, N-vat methacrylic acid Put the amide and chitosan into the reaction kettle, preheat for 20 μm at 43 °C, then add the dry matter, hydrogen-containing silicone oil, diphenyl methyl silane, ethylene glycol and catalyst, heat up to 83 °C, use nitrogen protection, Stir the reaction anvil; (4) After the stirring reaction, cool to room temperature and collect the reaction mixture to obtain the diatom mud paint base material. In parts by weight, take 73 parts of the diatom mud paint base material, 15 parts of additives, 10 parts of benzoin dimethicone, 5 parts of dispersant, and 0.7 parts of methyl cellulose are put into a mixer and mixed, and the stirred mixture is collected to obtain the diatom mud paint.

[0021] Example 3 The choice of catalyst was chloric acid.

[0022] The additives are prepared by mixing lime calcium and attapulgite at a mass ratio of 1:2.

[0023] The choice of dispersant is sodium polyacrylate.

[0024] A preparation method of diatom mud paint, the preparation method includes the following steps: (1) According to the mass ratio of 1:4:3, put the six ring stone, diatomaceous earth and ethanol solution into the ball mill at 500 °C/ πιΐη is ball milled for 40 πήη, the ball milled material is collected, the ball milled material, tetrabutyl titanate, and ethanol solution are mixed uniformly in a mass ratio of 4:2:5, and then a 10% nitric acid solution with the mass of the ball milled material is added, ultrasonically shaken for 15 πήη, and left to stand 311 (2) After the end of standing, freeze-dry and collect the dried material. In parts by weight, take 90 parts of water, 45 parts of dried material, 30 parts of hydrogen-containing silicone oil, 20 parts of diphenylmethyl silane, and 16 parts of methylbenzene. Methyl methacrylate, 15 parts of chitosan, 13 parts of N-vat methacrylamide, 5 parts of ethylene glycol and 1 part of catalyst; (3) First, water, methyl methacrylate, N-vat methacrylic acid Put the amide and chitosan in the reaction kettle, preheat for 20 μm at 40 °C, then add the dried material, hydrogen-containing silicone oil, diphenyl methyl silane, ethylene glycol and catalyst, heat up to 80 °C, use nitrogen protection, Stir the reaction; (4) After the stirring reaction, cool to room temperature, collect the reaction mixture to obtain the diatom mud paint base material, by weight, take 70 parts of the diatom mud paint base material, 14 parts of additives, 9 parts of benzoin dimethicone, 4 parts of dispersant, and 0.4 part of methyl cellulose are put into a mixer and mixed, and the stirred mixture is collected to obtain the diatom mud paint.

[0025] Comparative example: a diatom mud paint produced by a company in Jilin City.

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[0026] The diatom mud paint of the present invention and the diatom mud paint of the comparative example were tested for related indicators, and the detection basis and judgment basis were 6B/Τ9756-2009 "Synthetic resin emulsion interior wall paint" and mouth/Τ2177-2013 "Diatom mud decorative wall materials", the testing environment is room temperature 20 soil 2£, relative humidity 50 ± 5%. The test results are shown in Table 1.

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Use 87 fluorescent lamp to provide 400-720nm visible light. In a closed container containing benzene and formaldehyde, the initial concentration is 100 tons/1. After testing the coating prepared above, the remaining concentration of pollutants is analyzed by gas chromatograph after 5, so that the degree of degradation can be known. The results are shown in Table 2.

[0028] Table 2:

<td>Test items</td><td>Example 1</td><td>Example 2</td><td>Example 3</td><td>Comparison</td>

<td>Benzene degradation rate%</td><td>98</td><td>97</td><td>98</td><td>72-78</td>

<td>Formaldehyde degradation rate%</td><td>99</td><td>99</td><td>98</td><td>76-82</td>

<td>Based on the above, this hair sand</td><td colspan="4">Compared with the commercially available products, the diatom mud paint of the bow has excellent performance and is worthy of vigorous promotion.</td>