1. High temperature resistance
The softening point temperature of quartz glass is about 1730℃, which can be used for a long time at 1100℃, and the temperature of short time use can be as high as 1450℃.
2. Corrosion resistance
In addition to hydrofluoric acid, quartz glass almost does not react with other acids, and its acid resistance is 30 times that of ceramics, 150 times that of stainless steel, especially its chemical stability at high temperatures, which is unmatched by any other engineering materials.
3. Good thermal stability
The thermal expansion coefficient of quartz glass is small, can withstand drastic temperature changes, quartz glass is heated to about 1100℃, and it will not burst into normal temperature water.
4. Good light transmission performance
Quartz glass has good light transmission performance in the entire spectral band from ultraviolet to infrared, and the visible light transmittance is above 95%, especially in the ultraviolet spectral region, the transmittance can reach more than 80%.
5. Good electrical insulation performance
The resistance value of quartz glass is equivalent to 10,000 times that of ordinary glass, which is a better electrical insulation material and has good electrical properties even at high temperatures. Because of its excellent physical and chemical properties, quartz glass is widely used in various fields such as electric light source, semiconductor, optical communication, military, metallurgy, building materials, chemistry, machinery, electric power, environmental protection and so on.