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Gel film for cleaning mildew and dust on surface of cultural relic

A technology of gel film and mildew spot, applied in the field of gel cleaning agent, to achieve good liquid retention, prevent secondary pollution, and easy storage

Inactive Publication Date: 2015-12-02
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technology to be solved by the present invention is to overcome the problems existing in the existing gel cleaning agent, and to provide a gel film for removing mildew and dust on the surface of cultural relics, which is convenient to store, easy to use, and has less residual pollution.

Method used

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  • Gel film for cleaning mildew and dust on surface of cultural relic
  • Gel film for cleaning mildew and dust on surface of cultural relic
  • Gel film for cleaning mildew and dust on surface of cultural relic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to the mass percentage, the composition is: polyvinyl alcohol 7.5%, polyacrylic acid 7.5%, polyethylene glycol 1.5%, glutaraldehyde 0.03%, distilled water 83.47%, add 7.5g polyvinyl alcohol 1799 to 83.26g distilled water, heat to 90 ℃ to completely dissolve polyvinyl alcohol 1799, then add 7.5g of polyacrylic acid with an average molecular weight of 900 and 1.5g of polyethylene glycol with an average molecular weight of 10,000, stir evenly, adjust the pH value to 3 with dilute sulfuric acid, and then stir at room temperature Add 0.24 g of glutaraldehyde aqueous solution with a mass fraction of 12.5% ​​under the condition, stir evenly, pour the obtained solution into a mold, form a film at 45° C. and dry to obtain a gel film with a thickness of 0.09 mm. Depend on figure 1 It can be seen that the obtained gel film has a rich capillary structure, and the pores are 1-3 μm.

Embodiment 2

[0031] According to the mass percentage, the composition is: polyvinyl alcohol 7.5%, polyacrylic acid 15%, polyethylene glycol 1.5%, glutaraldehyde 0.03%, distilled water 75.97%, add 7.5g polyvinyl alcohol 1799 to 75.76g distilled water, heat to 90 ℃ to completely dissolve polyvinyl alcohol 1799, then add 15g of polyacrylic acid with an average molecular weight of 900 and 1.5g of polyethylene glycol with an average molecular weight of 10,000, stir evenly, and adjust the pH value to 3. Then add 0.24g of glutaraldehyde aqueous solution with a mass fraction of 12.5% ​​under stirring and normal temperature conditions, stir evenly, pour the resulting solution into a mold, form a film at 45°C and dry to obtain a 0.10mm thick gel film. Depend on figure 2 It can be seen that the obtained gel film has a rich capillary structure, and the pores are 2-3 μm.

Embodiment 3

[0033] According to the mass percentage, it is composed of: polyvinyl alcohol 7.5%, polyacrylic acid 22.5%, polyethylene glycol 1.5%, glutaraldehyde 0.03%, distilled water 68.47%, add 7.5g polyvinyl alcohol 1799 to 68.26g distilled water, heat to 90 ℃ to completely dissolve polyvinyl alcohol 1799, then add 22.5g of polyacrylic acid with an average molecular weight of 900 and 1.5g of polyethylene glycol with an average molecular weight of 10,000, stir evenly, and adjust the pH value with a 10% aqueous solution of sodium hydroxide to 3, then add 0.24g of glutaraldehyde aqueous solution with a mass fraction of 12.5% ​​under stirring and normal temperature conditions, stir evenly, pour the resulting solution into a mold, form a film at 45°C and dry to obtain a thickness of 0.13mm gel film. Depend on image 3 It can be seen that the obtained gel film has a rich capillary structure, and the pores are 2-3 μm.

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Abstract

The present invention discloses a gel film for cleaning mildew and dust on a surface of a cultural relic. The gel film for cleaning mildew and dust on the surface of the cultural relic is a rapidly swelled flexible gel film which is prepared through cross-linking by taking polyvinyl alcohol as a framework material, polyacrylic acid as a thickness component, polyethylene glycol as an elastic and swelling ratio rate controlling agent, and glutaraldehyde as a cross-linking agent. The gel film is colorless, transparent and good in liquid holding property, has proper viscosity and elasticity, and contaminants such as mildew, dust and the like on the surface of the cultural relic are removed as a result of the proper viscosity; the gel film and contaminants can be removed by virtue of an uncovering method when the cleaning is completed due to the proper elasticity, so that a cleaning solution is effectively prevented from diffusing on the cultural relic to lead to secondary pollution. The gel film provided by the present invention is applicable to removing contaminants such as mildew, dust and the like on cultural relics such as paper, wood, ceramic and the like, and a good cleaning effect can be achieved by adjusting the components and solutions of the held solution.

Description

technical field [0001] The invention belongs to the technical field of cultural relics protection, and in particular relates to a detachable gel cleaning agent for the surface of cultural relics, especially a gel cleaning agent capable of cleaning mildew, dust and other dirt on the surface of cultural relics by means of adhesion and detachment agent. Background technique [0002] There are two general methods for cleaning mildew and dust on the surface of cultural relics: mechanical methods and chemical methods. [0003] Mechanical methods include sweeping, vacuuming, sandblasting, sandblasting, ultrasonic, laser and other removal methods. However, when the pollution layer is relatively thin, or the dirt is closely combined with the surface of cultural relics, and the physical properties (such as hardness) are relatively close to the cultural relics, mechanical removal may damage the cultural relics. At this time, chemical methods are more likely to be effective than mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L29/04C08L33/02C08L71/08
Inventor 胡道道李世荣张惠梁兴唐汪沛君马海波
Owner SHAANXI NORMAL UNIV
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