Properties and Applications of Quartz Glass

Quartz glass is a kind of special material for glass industry. Quartz glass has a series of excellent physical and chemical properties and has a wide range of applications.


1. High temperature resistance. The softening point temperature of quartz glass is about 1730 ℃, which can be used at 1100 ℃ for a long time, and the maximum service temperature in a short time can reach 1450 ℃.
2. Corrosion resistance. Except hydrofluoric acid, quartz glass hardly reacts with other acids. Its acid resistance is 30 times that of ceramics and 150 times that of stainless steel. Especially its chemical stability at high temperature is unmatched by any other engineering materials.
3. Good thermal stability. The coefficient of thermal expansion of quartz glass is very small and can withstand drastic temperature changes. If the quartz glass is heated to about 1100 ℃, it will not burst in normal temperature water.
4. Good light transmittance. Quartz glass has good light transmission performance in the whole spectral band from ultraviolet to infrared. The visible light transmittance is more than 93%, especially in the ultraviolet spectral region, the maximum transmittance is more than 80%.
5. Good electrical insulation. The resistance value of quartz glass is 10000 times that of ordinary glass. It is an excellent electrical insulation material and has good electrical properties even at high temperature.
Because of the above excellent physical and chemical properties, quartz glass is widely used in electric light source, semiconductor, optical communication, military industry, metallurgy, building materials, chemistry, machinery, electric power, environmental protection and other fields.
Quartz glass can be used to make semiconductors, electro-optic sources, semi conducting communication devices, lasers, optical instruments, laboratory instruments, electrical equipment, medical equipment, high temperature and corrosion-resistant chemical instruments, chemical, electronic, metallurgy, building materials, national defense and other industries. High purity quartz glass can be used to make optical fiber.

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