Foreplay
The cultural relics are old.
—— (Tang) Yang Cheng's "Southern Xu Chunri nostalgia"
Every year on May 18th is the International Museum Day. In order to promote the healthy development of the global museum cause and attract the public to understand, participate and pay attention to the museum cause, the International Association of Museums proclaimed May 18 as the International Museum Day to the world in 1977.
The museum stores and displays many cultural relics, all of which are precious historical and cultural heritage of mankind, and how to protect the cultural relics is particularly important.
Cultural relics are divided into movable, such as: stone, bone, tooth, jade, pottery, bronze, iron, wood, painting, calligraphy, books, weaving and embroidery, etc., and immovable, such as: ancient architecture, ancient cultural heritage, Ancient tombs, ancient kiln sites, ancient workshops, ancient battlefields, rock carvings, rock paintings, large-scale sculptures, etc.
Today, let ’s talk about the protection of bronzes:
Benzotriazole
Bronze is an alloy in which copper and tin or lead are fused and cast according to a certain ratio. Because its patina is bluish green, it is named bronze. Bronze is a witness to the formation of the early state of China. It has experienced more than a thousand years of development in the Xia, Shang, Western Zhou and Spring and Autumn and Warring States Periods, and has formed a unique bronze culture.
Bronze has been buried underground for thousands of years. During the long-term burial process, it is in a relatively stable environment, and its corrosion process has tended to balance. After unearthing, this balance is destroyed. In the new environment, temperature, humidity, oxygen content, light, etc. cause damage to the utensils. Metal deterioration and rust will quickly form, which will cause various corrosion phenomena. Bronze protection is to prevent this corrosion.
In addition to mechanical methods, the protection of bronzes is also one of the commonly used methods. Among them, benzotriazole is a very effective bronze corrosion inhibitor commonly used to protect copper and copper alloys at home and abroad. It is a milky white powder crystal that can be dissolved in organic solutions such as ethanol and benzene. It forms a transparent cover film that is insoluble in water and some organic solvents with copper and copper alloys. The resulting film is relatively strong and effectively isolates metals from corrosive media. Contact, so that the utensils can maintain their original appearance.
Source: Mobei Public Account
