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Composite bionic SiO2/TiO2 protective film and preparation method thereof on the surface of stone historical relic

A technology for stone cultural relics and protective film, which is applied in the field of SiO2/TiO2 composite bionic protective film and its preparation on the surface of stone cultural relics, which can solve the problems of poor compatibility of cultural relics, easy breeding of microorganisms, limited protection time, etc., to achieve Good acid and alkali resistance, no pollution to the environment, good compatibility

Inactive Publication Date: 2016-06-29
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like traditional inorganic materials, modern organic materials cannot fully meet people's needs
The problems mainly focus on the following aspects: 1) The hydrophobicity of organic materials and the hydrophilicity of the stone surface constitute a pair of contradictions; 2) The surface of the material is easy to breed microorganisms; 3) The protection time is limited; 4) Compatibility with the cultural relics Poor; 5) Easy to aging and yellowing, etc.

Method used

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  • Composite bionic SiO2/TiO2 protective film and preparation method thereof on the surface of stone historical relic
  • Composite bionic SiO2/TiO2 protective film and preparation method thereof on the surface of stone historical relic
  • Composite bionic SiO2/TiO2 protective film and preparation method thereof on the surface of stone historical relic

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preparation example Construction

[0025] The present invention also provides a SiO 2 / TiO 2 The preparation method of composite bionic protective film on the surface of stone cultural relics, such as figure 1 As shown, it specifically includes the following steps:

[0026] 1) Pretreatment of the surface functionalization of stone cultural relics, such as figure 2 Shown: Clean the floating dust on the surface with deionized water, and after drying, treat it with 3-10% cetyltrimethylammonium bromide solution for 30-60 minutes to make the surface clean and functional.

[0027] 2) Preparation of base solution, such as image 3 Shown:

[0028] 2.1) Prepare a mixed solution, use tetraethyl orthosilicate (TEOS) or sodium fluorosilicate as the silicon source, add absolute ethanol and glycerol, the mass ratio is 1:0.88~1.33:0.19~0.38, magnetically stir for 30 ~60mim makes the solution evenly mixed.

[0029] 2.2) Control of rutile nano-TiO 2 The dispersion of particles in the mixed solution prepares the base liq...

Embodiment 1

[0033] The invention invented a SiO 2 / TiO 2 Composite biomimetic protective film, including the following components: SiO 2 ,TiO 2 and glycerol, where SiO 2 quality - Accounting for 80% of the total mass, TiO 2 quality - It accounts for 5% of the total mass, and the rest is glycerol.

[0034] The present invention also provides a SiO 2 / TiO 2 The preparation method of the composite bionic protective film on the surface of stone cultural relics specifically comprises the following steps:

[0035] 1) Surface functional treatment of stone cultural relics: Take a 5cm×5cm×2cm natural marble piece as an example, clean the floating dust on the surface with deionized water, and treat it with 5% cetyltrimethylammonium bromide solution after drying 45 min to clean and functionalize the surface.

[0036] 2) Preparation of base liquid:

[0037] 2.1) Prepare a mixed solution, use tetraethyl orthosilicate (TEOS) as the silicon source, add absolute ethanol and glycerol, the mass ...

Embodiment 2

[0041] The invention invented a SiO 2 / TiO 2 Composite biomimetic protective film, including the following components: SiO 2 ,TiO 2 and glycerol, where SiO 2 quality - Accounting for 90% of the total mass, TiO 2 quality - It accounts for 1% of the total mass, and the rest is glycerol.

[0042] The present invention also provides a SiO 2 / TiO 2 The preparation method of the composite bionic protective film on the surface of stone cultural relics specifically comprises the following steps:

[0043] 1) Surface functionalization treatment of stone cultural relics: Take a 5cm×5cm×2cm natural marble piece as an example, clean the floating dust on the surface with deionized water, and treat it with 10% cetyltrimethylammonium bromide solution after drying 60 min to clean and functionalize the surface.

[0044] 2) Preparation of base liquid:

[0045] 2.1) Prepare a mixed solution, use sodium fluorosilicate as the silicon source, add absolute ethanol and glycerol, the mass ra...

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Abstract

The invention provides a composite bionic SiO2 / TiO2 protective film and a preparation method thereof on the surface of a stone historical relic. Ethyl orthosilicate or sodium fluosilicate is used as a silicon source, anhydrous ethanol and glycerol are added, even mixing is performed, and then nano TiO2 particles are uniformly dispersed in the solution to prepare a base solution. The stone historical relic is cleaned and is soaked and pre-treated with a cetyl trimethyl ammonium bromide solution and then is immersed into the base solution, a small amount of deionized water and ammonia water are slowly and dropwise added, and the stone historical relic is taken out, cleaned and dried naturally after sealed storage is performed at room temperature for a period of time. The composite bionic protective film containing main component SiO2 and TiO2 is formed on the surface of the stone historical relic. The composite bionic SiO2 / TiO2 protective film prepared by adopting the preparation method has good combinability with the matrix of a stone material, good acid and alkali resistance capability, hydrophily, permeability, antibacterial performance and self-cleaning performance, and the preparation method can be performed at normal temperature and pressure and is friendly and pollution-free to the environment.

Description

technical field [0001] The invention relates to the field, in particular to a SiO2 / TiO2 composite bionic protective film and a preparation method thereof on the surface of stone cultural relics. Background technique [0002] my country has a large number of precious stone cultural relics, including stone tools, grottoes, stone pagodas, archways, steles and stone carvings of past dynasties. However, most of them are distributed in the wild, affected by the harsh environment, and have experienced wind and rain for thousands of years. Especially the environmental pollution caused by modern industry is accelerating the corrosion and weathering of these cultural relics, making these cultural relics lose their value as historical and cultural carriers. Therefore, it is an urgent task to actively take effective measures to protect these stone cultural relics. [0003] The most effective means to protect stone cultural relics is surface protection. Surface protection is to cover ...

Claims

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Application Information

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IPC IPC(8): C04B41/85
CPCC04B41/85C04B41/5041C04B2111/2061C04B2111/23C04B41/5035C04B41/455C04B41/4535C04B41/4582
Inventor 洪坤徐泽远章豪颜明俊许莹钱国庆周苏闽
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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