Now, let's make a comparison experiment between glass-ceramic and natural stone. We poured the ink on the marble and the glass-ceramic, and waited for a while, the ink on the glass-ceramic could be easily wiped off, and the ink on the marble was left behind. Why is this? Marble, granite and other natural stone surfaces are rough, which can hide dirt, and there is no such problem in glass-ceramics. As we all know, the main component of marble is calcium carbonate. It is used to make buildings. It is easy to chemically react with water and carbon dioxide in the air. This is the reason why the marble building is discolored for a long time, and the glass ceramics hardly The air reacts, so it can last for a long time.
Glass-ceramic ceramic composite sheet
There are two main breakthroughs in this invention, namely the ratio of raw materials and the design of the process. Among them, the design of the process is the key to technology. In order to prepare the glass-ceramics, the raw materials should be proportioned and put into the kiln to be melted. After all the melting, the molten metal is poured on the cold iron plate. This is called quenching. After quenching, the raw materials have become a piece. Crystal clear glass, this step is the process of sintering. Now, we mash the glass, put it into the mold, smooth it, and put it into the kiln again. This calcination makes its atomic arrangement regular, from ordinary glass to glass-ceramic.
Most of the waste soil contains most of the components of glass-ceramics. We use computer testing to determine the chemical composition of existing raw materials and add missing parts, which greatly reduces the cost. The use of waste slag and waste soil as raw materials for glass-ceramics is conducive to environmental management and can turn waste into treasure, in parallel with environmental protection work in various places.
The low expansion coefficient of glass-ceramics can be used in important scientific and technological fields such as laser navigation gyro and optical telescope. The microcrystalline glass used in the production of laser navigation gyro in China is basically dependent on imports. Recently, Xiamen Aviation Industry Co., Ltd. has developed a suitable laser navigation gyro. The glass-ceramics are comparable in quality to imported glass such as Germany.
Glass-ceramics combines the triple advantages of glass, ceramics and natural stone. It is superior to sky stone and ceramics. It can be used for building curtain wall and indoor high-grade decoration. It can also be used as mechanical structural materials, electrical and electrical insulation materials, large-scale Base material of integrated circuit, heat-resistant column of microwave oven, chemical and anti-corrosion materials and mine wear-resistant materials, etc. It is a new material for the 21st century with a promising future.
At present, the glass ceramics for construction are sintered, and no crystal nucleating agent is added. Its basic principle is that glass is an amorphous solid. From a thermodynamic point of view, it is in a metastable state, which has a higher internal energy than a crystal, so it can be converted into a crystalline state under certain conditions. From a kinetic point of view, during the cooling process, the viscosity of the glass melt increases sharply, inhibiting the formation of crystal nuclei and crystal growth, preventing the growth of crystals. The glass-ceramics for building use the heterogeneous crystallization mechanism without nucleating agent, fully applying the thermodynamic potential and the kinetic inhibition. Under certain conditions, the physical process of this opposite phase is formed into a new one. Balanced while getting a new material.
Block Board In Plywood,Fire Proofing Board,White Hpl Plywood,Hpl Plywood
Fushi Wood Co., Ltd. , http://www.sgplywood.com