Coating with antibacterial and air-purifying functions

A paint and raw material technology, applied in the field of paint preparation and photocatalyst materials, can solve the problems of restricting industrialization, difficult recycling, easy aggregation, etc.

Inactive Publication Date: 2013-03-27
韦先飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the extremely small particle size of nano-titanium dioxide, there are disadvantages such as difficult...

Method used

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  • Coating with antibacterial and air-purifying functions
  • Coating with antibacterial and air-purifying functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 Preparation of porous silicon dioxide and titanium dioxide composite photocatalytic material

[0017] Take 50 grams of porous silicon dioxide, 187 grams of urea, add 15000 ml of water, stir evenly, and add 625 ml of 0.5 mol / L TiOSO 4 Add 15600ml of water to the solution, then mix and stir the two liquids, adjust the pH value to 1.5, stir at 75°C for 60mim, filter, wash, dry at 150°C for 2 hours, and calcinate at 500°C for 2 hours, then add 1 gram of tourmaline powder to mix and disperse , that is, porous silica and titania composite photocatalytic material.

[0018] Wherein, the preparation method of the porous silica is as follows: take 200 grams of diatomite raw earth, wash it with water, take 100 grams of washed diatomite and calcinate it at 550° C. for 1.5 hours, and add 1.3% diatomite after cooling. 120ml of sulfuric acid was stirred evenly, and calcined at 250°C for 2.5 hours, then washed with iron remover, and then washed with water until the pH val...

Embodiment 2

[0019] Embodiment 2 Preparation of porous silicon dioxide and titanium dioxide composite photocatalytic material

[0020] Take 100 grams of porous silicon dioxide, 375 grams of urea, add 30000 ml of water, stir evenly, and add 1250 ml of 0.5 mol / L TiOSO 4 Add 32000ml of water to the solution, then mix and stir the two liquids, adjust the pH value to 1.5, stir at 75°C for 90mim, filter, wash, dry at 150°C for 2.5 hours, and calcined at 650°C for 3 hours, then add 2 grams of tourmaline powder to mix and disperse , that is, porous silica and titania composite photocatalytic material.

[0021] Wherein, the preparation method of the porous silica is as follows: take 1000 grams of zeolite raw ore and pulverize it to 100 mesh, impregnate it with 3000 ml of hydrochloric acid or sulfuric acid with a concentration of 6-10%, filter it for 3 hours, and then wash it with distilled water until the pH value is 7. , The obtained zeolite precipitate is dried and calcined at 350-500°C to obtai...

Embodiment 3

[0022] The preparation of embodiment 3 porous silicon dioxide and titanium dioxide composite photocatalytic material

[0023] Take 50 grams of porous silicon dioxide and add 1500 ml of water and stir evenly, and another 2.9 mol / L of TiCl 4 100ml solution, then mix the two liquids evenly, add 230ml 1.49mol / L ammonium sulfate solution to it, make it react at 25-30°C for 2 hours, adjust the pH value to 4.5, filter, wash, and dry at 105°C for 2 hours, calcined at 650°C for 3 hours, and then added 1 gram of tourmaline powder to mix and disperse to obtain a composite photocatalytic material of porous silica and titania.

[0024] Wherein, the preparation method of the porous silica is as follows: take 1000 grams of kaolin or hard kaolin and pulverize to 80 meshes, then calcined at 500-600° C. for 2 hours, and then mix the calcined soil with 30% hydrochloric acid by 1 : Mixed at a weight ratio of 2.5, soaked in acid at 90°C for 7 hours, neutralized, filtered, and dried to obtain poro...

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Abstract

The invention provides a coating with antibacterial and air-purifying functions. The coating is formed by the following component in percentage by mass: 1-10% of porous silicon dioxide and titanium dioxide compound photocatalytic material, 40-85% of calcium carbonate, 10-50% of ash calcium powder, 5-30% of talcum powder, 10-15% of white cement, 0.5-5% of organic polymer and 0.1-1% of cellulose. A dry powder coating and water are mixed according to a weight ratio of 1: (0.3-1) and then a mixture is subjected to common spraying or scraping construction to be cured into a film, so that the long-effect antibacterial and air-purifying effects are realized. The antibacterial effect on common bacteria in the indoor air, such as Escherichia coli, reaches to be more than 98%; more than 83% of formaldehyde can be decomposed and purified in 48 hours and more than 49% of toluene can be decomposed and purified; and compared with the similar products, the formaldehyde/toluene degradation capability of the coating is stronger, so that the coating can be used as an indoor coating.

Description

technical field [0001] The invention relates to the technical field of photocatalyst materials and the field of paint preparation, in particular to a paint with antibacterial and air purification functions. Background technique [0002] With the advancement of science and technology and the rapid development of modern industry, environmental problems are becoming more and more serious. Human beings pay more attention to health. With the gradual improvement of environmental protection awareness, the demand for functional environmental protection coatings is increasingly urgent. However, some harmful fungicides and other ingredients are often added to traditional paints, which can easily cause environmental pollution and greatly reduce the safety of paints. [0003] As a new type of inorganic functional material, nano-titanium dioxide has the characteristics of acid and alkali resistance, light and chemical corrosion resistance, and can use the ultraviolet light contained in ...

Claims

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Application Information

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IPC IPC(8): B01J21/08B01J35/10C04B28/04
Inventor 韦先飞
Owner 韦先飞
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