Barium hydroxide solution for stone cultural relic protection and preparation method and application of barium hydroxide solution

Abstract

The invention discloses a barium hydroxide solution for stone cultural relic protection and a preparation method and application of the barium hydroxide solution, and belongs to the field of stone cultural relic protection. The preparation method comprises the following steps: dissolving barium salt, organic alkali, a penetrating agent and a perfluoro coupling agent serving as solutes in a mixed solvent of isopropanol and deionized water to obtain a barium hydroxide solution; hydrophobic and oleophobic treatment is conducted on the stone cultural relics through the perfluorinated coupling agent, the effect that the stone cultural relics are corroded by acid rain is reduced, and the generated cross-linking effect can play a role in reinforcing the weathered stone cultural relics; barium carbonate generated after barium salt permeating into cracks of the stone cultural relics reacts with carbon dioxide can play a role in enhancing and filling gaps; and the added penetrating agent can enable barium salt to penetrate into the deeper part of the stone cultural relics. The barium hydroxide solution has the characteristics of safety, high efficiency, simple process, large-scale application potential and the like, and is suitable for the fields of stone cultural relic protection and the like.

Description

technical field [0001] The invention belongs to the field of protection of stone cultural relics, in particular to a barium hydroxide solution for protection of stone cultural relics, its preparation method and application. Background technique [0002] Due to human factors and natural factors, stone cultural relics must suffer from weathering and deterioration to varying degrees, especially open-air stone cultural relics are more severely weathered, and reinforcement can improve the stability of stone cultural relics and prolong the life of cultural relics. Among them, inorganic reinforcing materials were widely used before the nineteenth century. Most inorganic reinforcing agents use the salt in the solution to condense in the stone pores or chemically react with the stone to fill the stone pores to form a barrier or replacement layer. The commonly used inorganic reinforcement materials in the world are: lime water, barium hydroxide, alkaline earth silicate and fluorosilic...

AI Technical Summary

Problems solved by technology

At the same time, it contains hydroxyl groups, ether bonds, amino groups and other polar genes. It has high adhesion to stone cultural relics and the effect is ideal, but it will change color after a long time of use.

Acrylic resin is widely used in the coating industry due to its good chemical stability, heat resistance, and weather resistance, but its poor water resistance limits its application in the protection of stone cultural relics

Among the organic polymers used to protect stone cultural relics, silicone resin has relatively good permeability, water repellency and weather resistance, so it not only has a reinforcing effect, but also has waterproof performance, but it needs high temperature curing, which limits its application

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