Composition Analysis Of Polished Vetrosa

    Glass is usually divided into oxide glass and non-oxide glass by main ingredient. Non-oxide glass varieties and small quantities, mainly sulfur glass and halide glass. The anion of the sulfur glass is sulfur, selenium, tellurium, etc., can cut-off short wavelength light and through yellow, red, and near, far infrared light, its low resistance, with switch and memory characteristics. The refractive index of halide glass is low, and the dispersion is low, and is used as optical glass.Polished Vetrosa
   The oxide glass is also divided into silicate glass, borate glass, phosphate glass and so on. Silicate glass refers to the basic composition of SiO2 glass, its many varieties, wide use. Usually according to the glass SiO2 and alkali metal, alkaline earth metal oxides of different content, but also divided into: Quartz glass. SiO2 content is more than 99.5%, the thermal expansion coefficient is low, high temperature resistance, good chemical stability, through ultraviolet and infrared light, melting temperature is high, viscosity is large, molding is difficult. It is used in semiconductor, light source, photoconductive communication, laser and other optical instruments. High silica oxide glass. Also known as Vycor glass, the main component is SiO2 content of about 95, containing a small amount of $literal and Nado, its properties and quartz glass similar. Sodium-calcium glass. Mainly SiO2 content, also contains 15% of Nado and 16% Cao, its low-cost, easy to shape, suitable for large-scale production, its production accounted for 90% of the utility glass. can produce glass jars, flat glass, utensils, light bulbs and so on.Polished Vetrosa
    Lead silicate glass. The main components are SiO2 and PBO, with a unique high refractive index and high volume resistance, with good infiltration of metal, can be used to make bulbs, vacuum tube core column, crystal glassware, flint optical glass and so on. Lead glass containing large amounts of PBO can block X-rays and gamma rays. Aluminum silicate glass. Taking SiO2 and $literal as main components, the softening deformation temperature is high, which is used for making discharge bulb, high-temperature glass thermometer, chemical combustion tube and glass fiber. Borosilicate Glass. With SiO2 and $literal as the main components, with good heat resistance and chemical stability, used in the manufacture of cooking utensils, laboratory equipment, metal welding and sealing glass. Borate Glass with $literal as the main component, low melting temperature, can resist the corrosion of sodium vapor. The borate glass containing rare earth element has high refractive index and low dispersion, and is a new type of optical glass. Phosphate glass is mainly composed of $literal, which has low refractive index and low dispersion, and is used in optical instruments.Polished Vetrosa