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Anti-fouling moldproof treatment process for sandstone

A technology of anti-mildew treatment and sandstone, which is applied in the field of surface treatment of inorganic non-metallic materials, can solve the problems of restricting the use of sandstone, sandstone is easy to get dirty, easy to grow mold, etc., and achieves the effect of low cost, environmental friendliness and mild conditions

Inactive Publication Date: 2011-09-07
上海奇葩环境科技有限公司
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  • Summary
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AI Technical Summary

Problems solved by technology

[0005] Because sandstone is easy to be dirty, stained and moldy, this limits the use of sandstone to a large extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] a. Antibacterial and antifungal treatment

[0031] Weighing 1-3% of nano-zinc oxide and 1-3% of silver-loaded nano-phosphate double salt with a balance, and diluting with deionized water to form a dispersion with a total solid content of 2-6%. Add 0.2-0.5% non-ionic surfactant OP-10 to the dispersion, stir and disperse into a suspension.

[0032] Brush or spray the suspension on the sandstone surface and let the sandstone dry.

[0033] b. Antifouling and waterproof treatment

[0034] (1) Dissolving fluorosilane in ethanol to make an alcohol solution with 1% fluorosilane content.

[0035] (2) Dissolve tetraalkoxysilane with 4 times the mass of isopropanol, then add it to the trialkoxysilane solution dissolved in 1.5 times isopropanol, stir evenly, heat at 50°C for 60 minutes, and then heat at 25°C Natural cooling standby;

[0036] (3) Mix (1) and (2) and paint or spray on the sandstone surface, and dry at room temperature for 24 hours.

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PUM

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Abstract

The invention discloses an anti-fouling moldproof treatment process for sandstone, belonging to the technical field of surface treatment of inorganic non-metal materials. The treatment process comprises the following steps: (1) mixing silver-carried nano double phosphate, nano zinc oxide, non-ionic surfactant and deionized water in a certain mass ratio, and evenly stirring; (2) brushing or spraying the mixed liquid obtained in the step (1) onto a sandstone surface, and airing the sandstone; (3) mixing trialkoxysilane, tetraalkoxysilane, fluorosilane and isopropanol in a certain mass ratio, and evenly stirring; and (4) brushing or spraying the mixed liquid obtained in the step (3) onto the sandstone surface, and drying at normal temperature for 24 hours. The sandstone treated by the treatment process can not be easily polluted and fouled, get moldy or the like due to the characteristic of porosity, thereby keeping the apparent decorative effect of the sandstone and maintaining the structure and physicochemical properties of the sandstone. The alternate freezing and thawing and alternate wetting and drying experiments indicate that the structure and physicochemical properties of the sandstone are normal. The outdoor all-weather simulation experiment proves that the sandstone can not be easily fouled or get moldy, and has a certain self-cleaning function.

Description

technical field [0001] The invention relates to an antifouling and antimildew treatment process for sandstone, which belongs to the technical field of surface treatment of inorganic non-metallic materials. Background technique [0002] Sandstone belongs to sedimentary rock, and it is a geological rock that is gradually formed under high-pressure environment after several years of gravel formed by natural water body under the bonding of humic biological glue. [0003] Sandstone is the most widely used building stone. The buildings decorated with sandstone hundreds of years ago still have charm, such as Notre Dame de Paris, the Louvre, the British Royal Palace, the U.S. Congress, Harvard University, etc. The noble and elegant temperament of sandstone and its hard texture have made world architecture A blossoming wonder in history. In recent years, sandstone, as a natural building material, has been praised by architectural designers who follow fashion and nature, and is wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/50C04B41/46
Inventor 陶冶吕伟丽
Owner 上海奇葩环境科技有限公司
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