Medium borosilicate glass composition, medium borosilicate glass and preparation method and application thereof

Abstract

The invention relates to a medium borosilicate glass composition which is characterized in that the composition contains B2O3, SiO2, Al2O3, ZnO, an alkali metal oxide, an alkaline earth metal oxide and La2O3; based on the total weight of the composition, in the medium borosilicate glass composition, the total content of B2O3, SiO2 and Al2O3 is 88-92.5 wt%, and the total content of alkali metal oxide is 6-9 wt%; the total content of ZnO and alkaline earth metal oxide is 0.9-3.7 wt%; the ratio of the content of ZnO to the sum of the total content of ZnO and alkaline earth metal oxide is 0-0.45; and the ratio of the content of La2O3 to the sum of the total content of ZnO and alkaline earth metal oxide is 0-0.5. Medium borosilicate glass prepared from the glass composition has good water resistance, acid and alkali corrosion resistance and excellent optical properties. By utilizing the technical scheme provided by the invention, the defects of stones, lines, bubbles and the like frequently occurring in the production of the medium borosilicate glass can be reduced, and the product has higher yield.

Description

technical field [0001] The present disclosure relates to the field of glass, in particular, to a medium borosilicate glass composition, medium borosilicate glass and its preparation method and application. Background technique [0002] Medium borosilicate glass, also known as neutral borosilicate glass, is more and more used in the production of medical packaging materials because of its small expansion coefficient, high mechanical strength, and good chemical stability. At present, the medical glass packaging materials produced in my country are mainly low-borosilicate glass and soda-lime-silicate glass, with only a small amount of medium-borosilicate medical glass, and domestic products are still comparable to foreign products of the same type in terms of quality stability and water resistance. There is a certain gap, so the current domestic medical borosilicate glass products mainly rely on imports. Due to the limited production capacity of medium-borosilicate medical glas...

AI Technical Summary

Problems solved by technology

However, due to the limited production capacity of medium-borosilicate medical glass in the world and the continuous growth of demand for medium-borosilicate glass bottles for vaccine packaging, the domestic supply of medium-borosilicate glass products is seriously insufficient

[0003] Compared with low borosilicate glass, the boron content in medium borosilicate glass is higher, and boron has a large corrosion loss to the furnace and related materials. Rhodium alloys are protected, increasing production costs

In addition, domestically produced medium borosilicate glass often has defects such as stones, lines, and bubbles, and the qualified rate of finished products is low, which cannot meet the needs of medical packaging materials

Images