Corrosion resistant glass fiber

摘要: PROBLEM TO BE SOLVED: To provide a glass fiber which is produced using inexpensive raw materials, easy to spin, and excellent in productivity corrosion resistance improved acid reduced dielectric constant the contents of B2O3 F2 are decreased as much possible. SOLUTION: The contains, by weight, 56 63% SiO2, 0.5 3% B2O3, 12 16% Al2O3, 16 25% CaO, 0.1 6% MgO, 5% ZnO, 1 8% MgO+ZnO, >=0 <0.5% TiO2, 0 1% Na2O, K2O 1.0% Na2O+K2O 0.05 F2.