What are the advantages of high-purity quartz sand?

High-purity quartz sand generally refers to quartz powder with an SiO2 content higher than 99.99%, and is the main raw for quartz glass and quartz crucibles. Its high-end products are widely used in industries such as large-scale and ultra-large-scale integrated circuits, optical fibers, solar cells,, aerospace, and military. Advantages: Temperature resistance is as high as 1100-1200°C, which is 800°C higher ordinary glass; It is a transparent refractory material; The coefficient of thermal expansion is small, only 5.5×10^-7/°C, equivalent to 120 of ordinary glass, and theoretically can reach zero expansion; It has excellent light transmission performance, allowing ultraviolet, visible, and infrared light to pass through well; It has good electrical insulation, with a resistivity of 10^18 Ω/cm at 20°C, an insulation strength of 250 kV/cm, and vacuum degree that can reach 10^-6 Pa; It has good chemical stability, and is insoluble in any other acid except hydrofluoric acid