What is the raw material of glass products?
Ordinary glass raw materials are soda ash (sodium carbonate), limestone (calcium carbonate) and silica, after a high temperature reaction, the products are mainly sodium silicate, calcium silicate and silica
It's quartz sand (that is sand). The chemical name is SiO2
Ordinary glass is the raw material of soda (sodium carbonate), limestone (calcium carbonate) and silica by high temperature reaction, with sodium silicate, calcium silicate and silica products, according to the needs of different substances will add color.For example, adding chromium oxide (Cr2O3) glass, is green; adding manganese dioxide (MnO2), purple glass; adding cobalt oxide (Co2O3) glass, blue glass, copper, copper oxide is high if the glass appeared blue and green; in order to lower the price of cuprous oxide (Cu2O) when there is red glass.Now, people use the oxide of rare earth elements as coloring agents to make all kinds of high-grade color glass. Colored glass doped with rare earth elements has a bright, bright color and even changes colors in different light. For example, in the glass of neodymium oxide has this characteristic, it shows purple red in the sunlight, in the fluorescence of purple blue, very beautiful. There is a kind of glass that changes with the intensity of light. People use it as the lens of glasses and the window glass of the house. With this kind of glass as a window, the room can maintain a certain brightness, and no longer need to use curtains to shade, so some people call it "automatic curtain"". It can prevent the UV rays of the sun through the library and Museum Library, installed on the glass, can protect the books and cultural relics from UV damage, in addition to the rare earths, directly adding tungsten and platinum in the glass, can also be made of glass.
