초록 ▼

A devitrification resistant, sulfuric acid resistant and water resistant glass fiber consisting essentially of SiO2, Al2O3, CaO, MgO, Na2O and/or K2O, B2O3, and optionally Fe2O3, and/or TiO2 and/or F2, said glass fiber having delta T of at least about 395°F. and a durability (% fiber weight loss at

A devitrification resistant, sulfuric acid resistant and water resistant glass fiber consisting essentially of SiO2, Al2O3, CaO, MgO, Na2O and/or K2O, B2O3, and optionally Fe2O3, and/or TiO2 and/or F2, said glass fiber having delta T of at least about 395°F. and a durability (% fiber weight loss at 96°C.) in water for 24 hours of less than about 1.6% and in 10% H2SO4 for 24 hours of less than about 1.1%.

대표청구항 ▼

A devitrification resistant, sulfuric acid resistant and water resistant glass fiber consisting essentially of in approximate weight percent 67% to 70% SiO2, 3% to 4% Al2O3, 10% to 13% CaO, 2% to 3% MgO, 7% to 10% of (Na2O+K2O), 3 to 6% B2O3, and less than 1% of each of Fe2O3, TiO2 and F2, said glas

A devitrification resistant, sulfuric acid resistant and water resistant glass fiber consisting essentially of in approximate weight percent 67% to 70% SiO2, 3% to 4% Al2O3, 10% to 13% CaO, 2% to 3% MgO, 7% to 10% of (Na2O+K2O), 3 to 6% B2O3, and less than 1% of each of Fe2O3, TiO2 and F2, said glass fiber having a delta T of at least about 395°F. and a durability (% fiber weight loss at 96°C.) in water for 24 hours of less than about 1.6% and in 10% H2SO4 for 24 hours of less than about 1.1%, said glass having a viscosity, in poise, of 10 to the 2.5 power at a temperature of about 2350°F. to about 2500°F.