Composition for high performance glass fibers and fibers formed therewith
US8252707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2008 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Jul 19, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C13/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition for the manufacture of high strength glass fibers suitable for manufacture in both precious metal lined furnaces and refractory lined glass melter is disclosed. The glass composition of the present invention includes 62-68 weight % SiO2, 22-26 weight % Al2O3, 8-15 weight % MgO and 0.1 to 3.0 weight % Li2O. One suitable composition of the present invention includes 64-66.5 weight percent SiO2, 23-24.5 weight percent Al2O3, 9-11 weight percent MgO and 0.3-0.35 weight percent Li2O. Another suitable composition includes 66.5 weight percent SiO2, 23.4 weight percent Al2O3, 9.8 weight percent MgO and 0.3 weight percent Li2O. Yet another suitable composition is about 66 weight percent SiO2, about 23 weight percent Al2O3, about 10.5 weight percent MgO and about 0.3 weight percent Li2O. Fibers formed by the present invention are also disclosed. The fibers have a fiberizing temperature of less than 2650° F., a ΔT of at least 25° F. Further, the glass fibers of the present invention typically have a strength in excess of 700 KPSI, in one embodiment, a strength in excess of about 730 KPSI, and, in yet another embodiment, a strength in excess of about 750 KPSI. The glass fibers wi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.