Composition for preparing high-performance glass fiber by tank furnace production

摘要

A composition for preparing high-performance glass fiber by tank furnace production comprising in preferred percentage by weight: 57.5˜62.5% of SiO2, 14.5˜17.5% of Al2O3, 13.5˜17.5% of CaO, 6.5˜8.5% of MgO, 0.05˜0.6% of Li2O, 0.1˜2% of B2O3, 0.1˜2% of TiO2, 0.1˜2% of Na2O, 0.1˜1% of K2O and 0.1˜1% of Fe2O3 and (CaO+MgO)/MgO>3, with the content of at least one of the three components, A2O, B2O3 and TlO2 higher than 0.5%, with the composition yielding glass fiber having improved mechanical property, causing the melting and clarification of glass and forming performance of fiber close to those of boron-free E glass, and facilitating industrial mass production by tank furnace processes with manufacturing costs close to those of conventional E glass.

主权项

1. A composition for preparing high-performance glass fiber comprising by weight percentages:SiO257.5~62.5%Al2O314.5~17.5%CaO13.5~17.5%MgO6.5~8.5%(CaO + MgO)/MgO>3Li2O0.05~0.6% B2O30.1~2.0%TiO20.1~2% Na2O0.1~2% K2O0.1~1% Fe2O30.1~1% wherein the weight percentage of at least one of Li2O, B2O3 or TiO2 is greater than 0.5% and wherein 2.01≦CaO/MgO≦2.3.