Home Resin Crafts Teach You To Maintain Copper Crafts

- Apr 26, 2018 -

Among the copper handicrafts and imitation copper resin handicrafts, many of my friends chose imitation copper resin handicrafts, and many of my friends chose copper handicrafts. Because copper crafts also have their own advantages. Whether copper crafts or imitation copper crafts are all in need of maintenance. why?

Because the arts and crafts will be obsolete as time goes by, how do you usually maintain it? This is a knowledge. Here we look at specific methods.

1. Benzotriazole method. Benzotriazole is a heterocyclic compound that forms stable complexes with copper and its salts and forms an insoluble, rather strong, transparent protective film on the surface of copper alloys, which inhibits and stabilizes copper broaching disease and prevents water vapor. And the erosion of air pollutants. Distilled water and toluene, acetone and other organic solvents are used to remove the dirt on the surface of the copper sculpture, and then dip in a benzotriazole alcohol solvent to infiltrate, and a complex protective film can be formed.

However, benzotriazole is susceptible to thermal sublimation and loses its protective effect. Therefore, a layer of polymer material should be coated on the surface of the copper sculpture to form a protective film.

2. Silver oxide method. Contacting the cuprous oxide with silver oxide closes the exposed surface of the cuprous chloride to achieve the purpose of controlling corrosion of the copper sculpture. First, the powdery rust was removed by mechanical methods to reveal the cuprous chloride, an off-white wax. The silver oxide and alcohol were then transferred into a paste, coated on the surface of cuprous chloride, and placed in a humid environment to make it fully act to form cuprous oxide and cupric chloride, covering the surface of cuprous chloride. Both are stable salts, so many times, until the utensil is placed in a high-humidity environment, there will be no corrosion point of powdery rust.

This method is suitable for spot-like localized corrosion artifacts and devices with metal inlays.

3. Lye soaking method. The etched bronze sculptures were soaked in sodium sesquicarbonate solution to gradually convert copper chlorides into stable copper carbonates. The copper ions in the bronze sculptures were displaced and transferred to the infusion. The immersion liquid needs to be replaced regularly until no chlorine ions appear in the immersion liquid. The artifacts were then washed repeatedly with distilled water to remove lye and sealed after drying. The alkali solution only extracts the chloride, retaining the colorful malachite and other corrosion layers, and does not damage the original appearance of the bronze sculpture.

The disadvantage of this method is that the replacement reaction takes a long time; in addition, the chloride not only adheres to the surface of the rust layer, but also penetrates into the deep part of the crust, which is difficult to replace thoroughly.

To maintain the original appearance of bronze sculptures, there is a problem of collection and storage. After long-term corrosion and oxidation of bronze sculptures in the ground, the texture is not strong, especially semi-embossed bronze sculptures, and even more vulnerable than porcelain. Therefore, the bronze sculptures are properly preserved to prevent their unearthed. Loss is very important for investors. Copper handicrafts have better investment value than resin handicrafts.

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