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Chemical properties:
1. High temperature resistance: long time up to 1200℃, short time up to 1450℃.
2. Corrosion resistance: acid resistance is 150 times that of stainless steel and 30 times that of ceramics.
Physical properties:
1. Thermal stability: the thermal expansion coefficient is extremely small, and it can withstand the drastic temperature difference. If the quartz glass tube is heated to 1100℃, it will not burst in the room temperature water.
2. Good light transmittance: quartz glass has good light transmittance in the whole spectrum from ultraviolet ray to infrared ray, with the visible light transmittance of more than 93% and the maximum ultraviolet spectrum of more than 80.
3. Electrical insulation: the electrical insulation of quartz glass is 10,000 times that of ordinary glass, and it also has good insulation at high temperature.
Application: widely used in electric light source, semiconductor, optical communication, military industry, metallurgy, building materials, chemistry, machinery, electric power, environmental protection and other fields
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