Thiourea compound rust remover and rust removal paste for protecting silverware and gilded silverware

A technology of thiourea and rust remover, which is applied in the field of rust remover and rust remover paste, and can solve problems such as unsatisfactory satisfaction

Inactive Publication Date: 2012-09-12
中国文化遗产研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] It can be seen that using citric acid, sodium sesquicarbonate, sodium thiosulfate and ammonia water mixed solution, ethylenediaminetetraacetic acid, nitrilotriacetic acid, thiourea and other materials to derust ancient silverware and gilt silverware is the most important method. Widely used chemical methods, laser technology, ultrasonic scaler

Method used

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  • Thiourea compound rust remover and rust removal paste for protecting silverware and gilded silverware
  • Thiourea compound rust remover and rust removal paste for protecting silverware and gilded silverware
  • Thiourea compound rust remover and rust removal paste for protecting silverware and gilded silverware

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Embodiment Construction

[0025] The composition of the rust remover used for the protection of ancient silverware and gilt silverware provided by the present invention is: 0.9-1.0mol / l thiourea, 0.01-0.015mol / l iron sulfate, dilute sulfuric acid to adjust the pH to 1- 2; preferably 1.0mol / l of thiourea, 0.0125mol / l of ferric sulfate, dilute sulfuric acid to adjust the pH to 1.

[0026] The composition of the rust removal paste is: add 1.6-1.8 grams of gelatin and 9-10 grams of diatomaceous earth to every 10 milliliters of the above rust remover solution, and mix thoroughly. The pH of the rust removal paste is 2-3; preferably, every 10 milliliters Add 1.7 grams of gelatin and 9.4 grams of diatomaceous earth to the rust remover solution, and mix thoroughly. The pH of the rust remover paste is 2-3.

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] 1. Rust removal test of thiourea compound rust remover

[0029] The ratio and main fun...

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Abstract

The invention provides a thiourea compound rust remover and rust removal paste for protecting silverware and gilded silverware. The rust remover comprises of thiourea 0.9-1.1 mol/l and ferric sulfate of 0.01-0.015 mol/l and has the pH value of 1-2. The rust removal paste is prepared by adding 1.6-1.8 g of gelatin and 9-10 g of diatomite in 10 ml of rust remover with uniformly stirring and has the pH value of 2-3. The rust remover can be used in concert with the rust removal paste for removing black corrosion on the ancient silverware and gilded silverware surfaces with good effect. The rust remover and the rust removal paste accord with the protecting principles of cultural relics, such as no change of original states of cultural relics and minimal intervention, and don't cause physical damage.

Description

technical field [0001] The present invention relates to a rust remover and paste for the protection of ancient silverware and gilt silverware, and in more detail to a thiourea compound rust remover for the protection of ancient silverware and gilt silverware agent and rust remover paste. Background technique [0002] In the practice of cultural relics protection, an experimental study on the surface rust removal of silverware and gilt silverware was carried out: [0003] "Zhang Guangmin, Xiong Yingfei, Zhang Ming. Surface Treatment of Gold Jewelry, Silver and Bronze Buddha Statues Unearthed from the Underground Palace of Xilin Pagoda, Songjiang. Proceedings of the Sixth National Academic Conference on Archeology and Cultural Relics Preservation Chemistry. Quanzhou, Fujian. Published by the Chinese Chemical Society. 2000, 66 -71. "analyzed the rust on the surface of gilt-silver Buddha statues and gilt-silver pagodas from the Song Dynasty to the Ming Dynasty unearthed in the ...

Claims

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Application Information

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IPC IPC(8): C23G1/10
Inventor 张治国马清林
Owner 中国文化遗产研究院
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