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).
Claims22
A fabric wherein at least one of a warp yarn or a fill yarn comprises:
- a 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 content or the K2O content.
A fabric wherein at least one of a warp yarn or a fill yarn comprises:
- a fiber glass strand comprising a plurality of glass fibers comprising a glass composition that comprises the following components:
- SiO2
- 60-68
- weight percent;
- B2O3
- 7-10
- 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 content or the K2O content.
A fabric wherein at least one of a warp yarn or a fill yarn comprises:
- a fiber glass strand comprising a plurality of glass fibers comprising a glass composition that comprises the following components:
- SiO2
- 60-68
- weight percent;
- B2O3
- 7-10
- 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+Na2O+K2O) content is less than 2 weight percent and wherein the MgO content is at least twice the content of CaO on a weight percent basis.
Dependencies are inferred from the claim text.