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Nanometer photocatalysis surface protection material for stones and stone cultural relic and preparation method of same

A technology for stone cultural relics and catalytic surfaces, which is applied in the field of photocatalytic material titanium dioxide to protect the surface of stone and stone cultural relics, can solve the problem of limited calcium-containing stone and stone cultural relics, no application of stone and stone cultural relics, and incomplete protection effect Human satisfaction and other problems, to achieve the effect of eliminating photocorrosion, good self-cleaning ability, and strong alkalinity

Inactive Publication Date: 2012-06-13
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic polymers have been used for decades for the surface protection of stone artifacts, the protection effect is still not satisfactory
The main problems are: 1) The actual effective life of organic polymer protective materials in the field is short, generally only a few years, up to 20 or 30 years, which cannot meet people's expectations
Nano-titanium dioxide has obvious photocatalytic effect, non-toxicity, corrosion resistance, and has attracted wide attention for its unique physical and chemical properties. It has been used in the field of photocatalysis, but it has almost no application in the field of stone and stone cultural relics.
At present, the patents related to stone and stone cultural relic protection materials are still mainly organic. For example, application number 89103208.8 and application number 200410043975.9 both disclose organic protection materials for stone and stone cultural relics; or organic-inorganic composite protection materials. Such as the application number 201010033914.X has announced a chitosan / silicon dioxide composite protective film; only one application number 00119382.1 discloses a protective method for inorganic materials of stone and stone cultural relics, but this method is limited to calcium Stone and Stone Artifacts

Method used

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  • Nanometer photocatalysis surface protection material for stones and stone cultural relic and preparation method of same
  • Nanometer photocatalysis surface protection material for stones and stone cultural relic and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] For standard white marble marble, wash off the floating dust with clean water, and soak in ethanol pretreatment solution for 12 hours. Mix butyl titanate with water, ethanol, acetylacetone, and hydrochloric acid in a molar ratio of 1:4:50:1.0:0.001, adjust the pH value to 3.5, and stir for 12 hours at a temperature of 80°C, then age for 12 hours to prepare The sol is obtained to make it flow naturally on the surface of the stone, completely form a film, and obtain a protective film with fine crystal particles and tight combination, which does not affect the color, feel and gloss of the original white marble marble. The anti-pollution (ink) performance is greatly improved compared with untreated stone; the acid resistance is excellent, and it can withstand the erosion of acid with pH=1.0; the air permeability has no obvious change compared with the stone without film-forming treatment; the hydrophilic effect, Compared with untreated stone, there is a greater improvement,...

Embodiment 2

[0021] The same as Example 1, just repeat the same operation of the film forming process of Example 1, the acid resistance, stain resistance, and hydrophilicity are better than Example 1, the air permeability is basically the same as that of Example 1, and the appearance does not change.

Embodiment 3

[0023] Same as Example 1, but the natural flow is changed to soaking and lifting, and the protective effect is generally better than Example 1 as a whole.

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Abstract

The invention relates to the field of protection of stones and stone cultural relic and provides a nanometer photocatalysis surface protection material for stones and stone cultural relic and a preparation method of the material. According to the invention, titanium alcoholate is taken as the main raw material; the titanium alcoholate, solvent, chelating agent, catalyst and the like are mixed, and are stirred fully under the condition of normal pressure and below the temperature of 100 DEG C to react, so as to obtain anatase titanium dioxide collosol surface protection liquid for stones and stone cultural relic; and a surface protection film made of anatase titanium dioxide photocatalysis material is formed on the surface of a stone, which is cleaned with solvent, through the method of brushing, soaking or the like. The nanometer photocatalysis surface protection material has the advantages that the reversibility is good; the compatibility with stones is good; the acid resistance is strong; the alkaline resistance is strong; the weatherability and the soil resistance are good; the self-cleaning capability is strong; the fungus resistance is good; and the appearance, the color and the hand feeling of the original stone are not affected.

Description

technical field [0001] The invention relates to a method for protecting the surface of stone materials and stone cultural relics by using the photocatalytic material titanium dioxide. Background technique [0002] Large-scale stone carvings, stone carvings, monuments and other stone components, as well as many stone monuments, are mostly exposed to the natural weathering environment. Because they are mainly composed of minerals with low erosion resistance, they are severely weathered and corroded. Although the most fundamental measure is to control the external environment, it is impossible to completely remove the influencing factors in the environment at once, and it is also impossible to transfer those stone monuments and buildings that are prone to erosion to places where there is no external influence. The physical carrier of surface cultural information has to carry out necessary surface protection and protective treatment on the surface of some endangered stone materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/50
Inventor 刘强柳清菊朱忠其张瑾
Owner YUNNAN UNIV
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