METHOD OF MANUFACTURING GLASS MICROSPHERES WITH CONTROLLED PROPERTIES FROM SYNTHETIC BLENDS Russian patent published in 2004 - IPC

FIELD: glass industry.

SUBSTANCE: invention relates to technology of manufacture of glass microproducts for converting them into hollow microspheres for laser physical experiments. One first chooses qualitative composition of functional components and then calculates optimal concentration of components of synthetic blend, wt %: SiO₂ 54.56-60.53, B₂O₃ 3.24-7.01, Na₂O 12.31-20.10, K₂O 0.09-1.07, CaO 5.59-6.56, MgO 1.35-2.79, Al₂O₃ 0.02-1.13, PbO 11.28-12.53. When varying silicate module within a range of 2.8 < n_Si < 3.4 to calculate quantitative composition of components, one utilizes a mathematical model, in which dependences of hydrogen permeability coefficient and chemical stability on structural factors are consecutively introduced, said structural factors being silicate module n_Si of glass-forming composition and molecular volumes V_i of functional components of synthetic blend both based on analysis of graphical representations of dependences of hydrogen permeability coefficient and chemical stability on quantitative composition of blend. Then, blend fraction 150-300 mcm is subjected to heat treatment.

EFFECT: enabled control of chemical stability and coefficient of hydrogen permeability.

2 cl, 1 dwg, 1 tbl, 3 ex