Low density and high strength fiber glass for reinforcement applications
AssigneePPG Industries Ohio, Inc.
InventorsJames Carl Peters, Juan Camilo Serrano, Hong Li, Cheryl A. Richards, Steven Joel Parks
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Abstract
The present invention relates to fiber glass strands, yarns, fabrics, composites, prepregs, laminates, fiber-metal laminates, and other products incorporating glass fibers formed from glass compositions. The glass fibers, in some embodiments, are incorporated into composites that can be used in reinforcement applications. Glass fibers formed from some embodiments of the glass compositions can have certain desirable properties that can include, for example, desirable electrical properties (e.g. low Dk) or desirable mechanical properties (e.g., specific strength).
Claims9
A yarn comprising at least one fiber glass strand comprising a plurality of glass fibers comprising a glass composition that comprises the following components:
- SiO2
- 60-68
- weight percent;
- B2O3
- 7-12
- weight percent;
- Al2O3
- 9-15
- weight percent;
- MgO
- 8-15
- weight percent;
- CaO
- 0-4
- weight percent;
- Li2O
- 0-2
- weight percent;
- Na2O
- 0-1
- weight percent;
- K2O
- 0-1
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- F2
- 0-1
- weight percent;
- TiO2
- 0-2
- weight percent;
- and
- other constituents
- 0-5
- weight percent total;
- wherein the Li2O content is greater than either the Na2O or the K2O content.
Dependencies are inferred from the claim text.