The characteristics of quartz glass

Quartz glass is the main material of the new modern science and technology. It has a very low coefficient of thermal expansion, high temperature resistance, excellent chemical stability, excellent electrical insulation properties of ultrasonic delay, low and stable, through UV spectrum and the best performance of transparent to visible light and near infrared spectral properties, mechanical properties and has higher than ordinary glass. Therefore it is the modern advanced technology of space technology, atomic energy industry, national defense equipment, automation system, as well as indispensable metallurgical, chemical, semiconductor, electric light source, communication, light industry, building materials industry in one of the fine materials.
 
Characteristics of the high temperature resistant quartz glass
 
Quartz glass softening point temperature of about 1730 DEG c, and can be used in 1100 DEG c for long time, the highest use temperature up to 1450 DEG c for short time.
 
Corrosion resistance
 
Except hydrofluoric acid, quartz glass hardly occur chemical reaction with other acids, the acid resistant ability is 30 times of ceramic, 150 times of stainless steel. Especially chemical stability at high temperatures, any other engineering materials can not compare.
 
Good thermal stability
 
Quartz glass thermal expansion coefficient is extremely small, can withstand the temperature changes, the quartz glass will not burst when it is heated to 1100 DEG C, then stored in water at room temperature .
 
Good light transmission performance
 
Quartz glass in the ultraviolet to infrared the entire spectral band  has good light transmittance, visible light transmittance above 93%, especially in the ultraviolet region, the maximum transmission rate can reach more than 80%.
 
Good electrical insulation properties
 
The resistance value of quartz glass is equal to ten thousand times of ordinary glass, it is an excellent electrical insulation materials, and it has good electrical properties even at high temperature. Because of the excellent physicochemical properties of quartz glass, so it is widely used in various fields of electric light source, semiconductor, optical communication, military industry, metallurgy, building materials, chemical, machinery, electric power, environmental protection etc.