GLASS FOR MANUFACTURING FIBER GLASS AND HIGH- TEMPERATURE SILICIC FIBER GLASS BASED THEREON

摘要

manufacture of cotton wool, fabrics, filements and mats used as heat-insulating material. SUBSTANCE: glass comprises, wt %: Al2O3, 2.5- 3.5; Na2O, 20-25; SO3, 0.01-1.0; SiO2, the balance, and at least one oxide from group consisting of CaO, MgO, TiO2, Fe2O3, ZrO2, ratios of components being as follows : CaO, 0.01-0.5; MgO, 0.01-0.5; TiO2, 0.01-0.1; Fe2O3, 0.1- 0.5; ZrO2, 0.01-0.5. High-temperature silicic fiber comprises, wt %: SiO2, 94-96; Al2O3, 3-4; Na2O, 0.01-1.0; CoO, 0.01-1.0; SO3, 0.01-1.0, and also at least one oxide from group consisting of CaO, MgO, TiO2, Fe2O3, ZrO2 in amounts, wt %: CaO, 0.01-0.5; MgO, 0.01-0.5; TiO2, 0.01-0.1; Fe2O3, 0.01- 0.5; ZrO2, 0.01-0.5. EFFECT: improved properties of the glass. 5 cl, 3 tbl