Low density and high strength fiber glass for reinforcement applications

Patent metadata

Field	Value
Publication number	US-9394196-B2
Application number	US-201113232316-A
Country	US
Kind code	B2
Filing date	Sep 14, 2011
Priority date	Dec 14, 2006
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

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 D k ) or desirable mechanical properties (e.g., specific strength).

First claim

That which is claimed:

1. 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:

SiO 2
60-68
weight percent;

B 2 O 3
7-12
weight percent;

Al 2 O 3
9-15
weight percent;

MgO
8-15
weight percent;

CaO
0-4
weight percent;

Li 2 O
>0-2
weight percent;

Na 2 O
0-1
weight percent;

K 2 O
0-1
weight percent;

Fe 2 O 3
0-1
weight percent;

F 2
0-1
weight percent;

TiO 2
0-2
weight percent; and

other constituents
0-5
weight percent total;

wherein the Li 2 O content is greater than either the Na 2 O content or the K 2 O content.

2. The fabric of claim 1 , wherein the plurality of glass fibers have a diameter between about 5 and about 13 μm.

3. The fabric of claim 1 wherein at least one fill yarn comprises the fiber glass strand.

4. The fabric of claim 1 wherein at least one warp yarn comprises the fiber glass strand.

5. The fabric of claim 1 wherein:
at least one fill yarn comprises the fiber glass strand, and
at least one warp yarn comprises the fiber glass strand.

6. The fabric of claim 5 , wherein the fabric comprises a plain weave fabric, a twill fabric, a crowfoot fabric, a satin weave fabric, a stitch bonded fabric, or a 3D woven fabric.

7. A composite comprising:
a polymeric resin; and
at least one fabric according to claim 1 .

8. The composite of claim 7 , wherein the polymeric resin comprises an epoxy resin.

9. The composite of claim 7 , wherein the polymeric resin comprises at least one of polyethylene, polypropylene, polyamide, polyimide, polybutylene terephthalate, polycarbonate, thermoplastic polyurethane, phenolic, polyester, vinyl ester, polydicyclopentadiene, polyphenylene sulfide, polyether ether ketone, cyanate esters, bis-maleimides, and thermoset polyurethane resins.

10. The composite of claim 7 , wherein the fabric comprises a plain weave fabric, a twill fabric, a crowfoot fabric, a satin weave fabric, a stitch bonded fabric, or a 3D woven fabric.

11. An aerospace composite comprising the composite according to claim 7 .

12. An aviation composite comprising the composite according to claim 7 .

13. A radome comprising the composite according to claim 7 .

14. A prepreg comprising:
a polymeric resin; and
a fabric according to claim 1 .

15. A fiber-metal laminate comprising:
the prepreg according to claim 14 ;
a first metal sheet adhesively secured to one surface of the prepreg; and
a second metal sheet adhesively secured to a second surface of the prepreg, such that the prepreg is positioned between the two metal sheets.

16. The fiber-metal laminate according to claim 15 , further comprising a second prepreg according to claim 14 and a third metal sheet, wherein the second prepreg is positioned between the second metal sheet and the third metal sheet.

17. The fiber-metal laminate of claim 15 , wherein the metal sheets comprise aluminum.

18. The fiber-metal laminate of claim 15 , wherein the polymeric resin comprises epoxy.

19. A laminate comprising:
a polymeric resin; and
a fabric according to claim 1 .

20. A fabric of claim 1 wherein the B 2 O 3 component of the fiber glass strand comprises no more than 10% of the total weight percent of the glass composition.

21. 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:

SiO 2
60-68
weight percent;

B 2 O 3
7-10
weight percent;

Al 2 O 3
9-15
weight percent;

MgO
8-15
weight percent;

CaO
0-4
weight percent;

Li 2 O
>0-2
weight percent;

Na 2 O
0-1
weight percent;

K 2 O
0-1
weight percent;

Fe 2 O 3
0-1
weight percent;

F 2
0-1
weight percent;

TiO 2
0-2
weight percent; and

other constituents
0-5
weight percent total;

wherein the Li 2 O content is greater than either the Na 2 O content or the K 2

Assignees

• Peters James Carl
• Serrano Juan Camilo
• Li Hong
• Richards Cheryl A
• Parks Steven Joel
• Ppg Ind Ohio Inc

Inventors

• Peters James Carl
• Serrano Juan Camilo
• Li Hong
• Richards Cheryl A
• Parks Steven Joel

Classifications

• Y10T442/2934

  Coating or impregnation contains vinyl polymer or copolymer · CPC title

• B29K2309/08

  Glass · CPC title

• Y10T442/2951

  Coating or impregnation contains epoxy polymer or copolymer or polyether · CPC title

• C03C3/091

  containing aluminium · CPC title

• B29C70/24

  oriented in at least three directions forming a three-dimensional [3D] structure · CPC title