The borosilicate glass plate is composed of the largest component of quartz (SiO2) and borate (B2O3) as a constituent of a glass microgrid, and the number of borates affects the properties of the glass in a specific manner, so that the borosilicic acid Salt glass has several seed types.
Classification of borosilicate glass
Low alkali borosilicate glass
Refers to the SiO2-B2O3-R2O component, containing low R2O glass, low coefficient of linear expansion, small dispersion, good chemical stability, high thermal stability, good electrical insulation, used as a previous glass (such as Pyrex), resistance Hot cookers, ampoules glass, neutral glass, vacuum glass, optical glass, LCD substrate, solar panels and heaters.
Alkaline earth borosilicate glass
SiO2-B2O3-PbO / ZnO components are used for crystalline powder solder for cathode ray tube (CRT) ; SiO2-B2O3-ZnO components for rectifier, electronic device passivation.
Lanthanum borosilicate glass
The SiO2-B2O3-La2O3-RmOn component, such as SiO2-B2O3-La2O3-CaO-ZnO-ZrO2, has high refractive index, low dispersion, good chemical temperature and low devitrification ability, and is used as optical glass.
Rare earth doped borosilicate glass
Doped glass, doped with Au, Ag, Cu, and doped with CdS, ZnS: Mn nanocrystals were prepared by using SiO2-B2O3-RmOn as the base component, Pr, Nd laser glass.
Borosilicate glass and high borosilicate glass plate What is the difference
1, the difference is that borosilicate glass does not contain alkali metal oxide.
2, high-borosilicate glass (also known as hard glass), is the use of glass in the high temperature conductive characteristics, through the glass inside the glass to achieve melting, the advanced production process from the line of thermal expansion coefficient (3.3 0.1) × 10-6 / K, also known as "borosilicate glass 3.3". It is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability. It is widely used in solar, chemical, pharmaceutical packaging, electric light source , Jewelry and other industries. Its good performance has been widely recognized around the world, especially in the field of solar energy applications more widely, Germany, the United States and other developed countries have carried out a more extensive promotion.
3, borosilicate glass is not alkali metal oxide high boron low silicon borosilicate glass. Coronal glass and barium-crowned glass are alkali-containing borosilicate glass systems. The corona glass belongs to the alkali-free borosilicate glass system. In the borosilicate glass gradually increase the content of B2O5, this phenomenon is called boron anomaly.