Surface yellow spot cleaning agent for neutral stones and stone cultural relics and preparation method thereof

A technology for stone cultural relics and cleaning agents, applied in non-surface-active detergent compositions, chemical instruments and methods, organic non-surface-active cleaning compositions, etc., can solve problems affecting stone life, stone corrosion, and environmental pollution. For enhanced cleaning performance and easy handling

Inactive Publication Date: 2011-09-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Many architectural decorative stones or large stone relics are oxidized due to the iron minerals in the stone itself, or the stone is polluted by external rust or colored substances (such as straw ropes, cardboard boxes, feces, food, tea, coffee, juice, etc.), There will be yellow spots on the surface, which will not only affect the appearance of the building, change the original appearance of the stone cultural relics, but also affect the life of the stone
At present, many domestic and foreign anti-macular cleaning agents have the following problems: 1. They are acidic or alkaline, which will cause corrosion to stone materials; Difficult to clean, will leave hidden dangers or pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] At room temperature and normal pressure, take 2.0% organic acid and 96% deionized water in parts by weight, dissolve this part of organic acid in this part of water, and stir at a constant speed with a glass rod. Dissolve and cool; add 2.0% amine reducing agent to the above solution, stir at a constant speed and mix evenly. The solution is colorless and transparent, pH=6.5~7.0. Use a dropper with a rubber tip to draw two droppers of the above solution (about 2.5ml) to moisten the facial tissue, and then apply the facial tissue to the rusty stained area on the stone surface. After 6 hours, the stone surface is cleaned.

example 2

[0021] At room temperature and normal pressure, take 1.7% organic acid and 94.0% deionized water in parts by weight, dissolve this part of organic acid in this part of water, and stir at a constant speed with a glass rod. Dissolve and cool; add an amine reducing agent with a ratio of 94% by weight to the above solution, stir and mix evenly at a constant speed. The solution is colorless and transparent, pH=7.5~8.0. Use a dropper with a rubber tip to suck up two droppers of the above solution (about 2.5ml) to moisten the facial tissue, and then apply the facial tissue to the coffee and soy sauce stained area on the stone surface. After 6 hours, the stone surface is cleaned.

example 3

[0023] At room temperature and normal pressure, take 2.0% organic acid and 96% deionized water in parts by weight, dissolve this part of organic acid in this part of water, and stir at a constant speed with a glass rod. Dissolve and cool; add 2.0% amine reducing agent to the above solution, stir at a constant speed and mix evenly. The solution is colorless and transparent, pH=6.5~7.0. Take two droppers of the above solution (about 2.5ml) with a glue-tip dropper to moisten the facial tissue, and then apply the facial tissue to the soy sauce stained area on the stone surface. After 6 hours, the stone surface is cleaned.

[0024] The above ratios are all in parts by weight.

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PUM

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Abstract

The invention discloses a cleaning agent for stones and stone cultural relics and a preparation method thereof. The cleaning agent can remove yellow spots from the surfaces of the stones and the stone cultural relics, wherein the yellow spots comprise rust yellow spots and organic yellow spots. The cleaning agent comprises organic acid, a reducing agent and water, wherein the organic acid mainly comprises monocarboxylic, dicarboxylic and polycarboxylic low-carbon acid (--COOH), sulfonic acid (--SO3H) and the like; and the reducing agent mainly comprises amine compounds. Cleaning liquid and waste liquid are neutral, do not have corrosion effect on the stones, and do not damage the environment. The cleaning agent has oxidation resistance, low cost, extremely low concentration and a simple operating method, is convenient to carry, can be prepared in advance, and can also be prepared on site.

Description

technical field [0001] The invention relates to a chemical preparation for removing rusty yellow spots and organic yellow spots on the surface of stone materials and stone cultural relics, in particular to a preparation method of a neutral decontamination agent. Background technique [0002] Many architectural decorative stones or large stone relics are oxidized due to the iron minerals in the stone itself, or the stone is polluted by external rust or colored substances (such as straw ropes, cardboard boxes, feces, food, tea, coffee, juice, etc.), There will be yellow spots on the surface, which will not only affect the appearance of the building, change the original appearance of the stone cultural relics, but also affect the life of the stone. At present, many domestic and foreign anti-macular cleaning agents have the following problems: 1. They are acidic or alkaline, which will cause corrosion to stone materials; Difficult to clean up, will leave hidden dangers or pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/26C11D7/32
Inventor 张秉坚刘仁植贺孝海
Owner ZHEJIANG UNIV
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