A Brief Introduction To Borosilicate Glass

Borosilicate glass, also known as borosilicate glass, refers to the glass whose basic components are SiO2, B2O3 and Na2O. The basic composition range is: ω (SiO2)=70%~80%, ω (B2O3)=6%~ 15%, ω(Na2O)=4%~10%, ω(Al2O3)=0~5%, ω(BaO)=0~2%, ω(CaO)=0~2%. Studies have shown that Na2O provides free oxygen, which transforms boron-oxygen triangle [BO3] into boron-oxygen tetrahedron [BO4], and the structure of boron changes from layered to frame-like, creating conditions for B2O3 and SiO2 to form uniform glass; B2O3 enters the glass structure with [BO3] or [BO4], especially when it forms a structural network with [BO4] and [SiO2], which increases the integrity and tightness of the network, so borosilicate glass has many excellent properties. Properties: such as good thermal stability, chemical stability, mechanical properties, process properties and optical properties, etc.