Effect of Water Concentration on the Properties of Commercial Soda‐Lime‐Silica Glasses

Abstract

The effect of water concentration on the properties of three commercial soda‐lime‐silica glasses has been measured. Water (H 2 O) concentration varied from 50 to 550 ppm‐wt. Properties measured include glass transformation temperature, transformation range viscosity, thermal expansion coefficient, electrical conductivity, and refractive index. The viscosity, T g , and electrical conductivity decreased with increasing water content, while the thermal expansion coefficient and refractive index were unaffected by changes in water concentration.