Borosilicate glass can be divided into the following types according to its composition:
1, low alkali borosilicate glass: refers to SiO2-B2O3-R2O composition, containing low R2O, high SiO2 glass, small coefficient of linear expansion, small dispersion, good chemical stability, high thermal stability, good electrical insulation, Used as a former glass (such as borosilicate), heat-resistant cookware, ampoules, neutral glass, electric vacuum glass, optical glass, liquid crystal substrates, solar panels and collectors.
2, alkaline earth borosilicate glass: refers to SiO2-B2O3-RO composition, such as SiO2-B2O3-PbO composition, using optical glass, low temperature glaze; SiO2-B2O3-PbO / ZnO component for crystalline powder solder, role Cathode ray tube (CRT) sealing; silica-B2O3-ZnO composition for rectifiers, electronic device passivation.
3, barium borosilicate glass: refers to SiO2-B2O3-La2O3-RmOn components, such as SiO2-B2O3-La2O3-CaO-ZnO-ZrO2 components have high refractive index, low dispersion, good chemical temperature, devitrification ability Low, used as optical glass.
4, rare earth doped borosilicate glass: SiO2-B2O3-RmOn based, doped Pr, Nd laser glass, doped with Au, Ag, Cu nonlinear optical glass, doped CdS, ZnS: Mn Nanocrystalline luminescent glass.