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US 10,870,602 B2Granted
Glass compositions, fiberizable glass compositions, and glass fibers made therefrom
AssigneeElectric Glass Fiber America, LLC
InventorsHong Li, Paul A. Westbrook
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention provide glass compositions, fiberizable glass compositions, and glass fibers formed from such compositions, as well as glass strands, yarns, fabrics, and composites comprising such glass fibers adapted for use in various applications. In some embodiments of the present invention, the glass compositions additionally include at least one rare earth oxide.
Claims19
A glass composition suitable for fiber forming comprising:
- SiO2
- 56-68
- weight percent;
- Al2O3
- 11-less than 18
- weight percent;
- CaO
- 12
- weight percent or less;
- MgO
- 7-17
- weight percent;
- Na2O
- 0-1
- weight percent;
- K2O
- 0-1
- weight percent;
- Li2O
- 0-5
- weight percent;
- TiO2
- 0-2
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- SnO2
- 0-4
- weight percent;
- ZnO
- 0-4
- weight percent;
- at least one rare earth oxide in an amount greater than 1 weight percent;
- and
- other constituents 0-11 weight percent total,
- wherein the (Na2O+K2O+Li2O) content is greater than 1 weight percent, and
- wherein the composition is substantially free of B2O3.
35 more elements
A glass fiber comprising:
- SiO2
- 60-68
- weight percent;
- Al2O3
- 14-less than 18
- weight percent;
- CaO
- 12
- weight percent or less;
- MgO
- 7-17
- weight percent;
- Na2O
- 0-1
- weight percent;
- K2O
- >0-1
- weight percent;
- Li2O
- 0-5
- weight percent;
- TiO2
- >0.3-2
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- SnO2
- 0-4
- weight percent;
- ZnO
- 0-4
- weight percent;
- at least one rare earth oxide in an amount not less than 0.05 weight percent;
- and
- other constituents 0-11 weight percent total, and
- wherein the composition is substantially free of B2O3.
34 more elements
Dependencies are inferred from the claim text.