Low Density and High Strength Fiber Glass for Reinforcement Applications

Patent metadata

Field	Value
Publication number	US-2016264453-A1
Application number	US-201615161506-A
Country	US
Kind code	A1
Filing date	May 23, 2016
Priority date	Dec 14, 2006
Publication date	Sep 15, 2016
Grant date	—

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 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 or the K 2 O content.

2 . A yarn comprising at least one fiber glass strand according to claim 1 .

3 . The yarn of claim 2 , wherein the at least one fiber glass strand is at least partially coated with a sizing composition.

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

5 . A fabric formed from at least one fiber glass strand according to claim 1 .

6 . A fabric comprising at least one fill yarn comprising at least one fiber glass strand according to claim 1 .

7 . A fabric comprising at least one warp yarn comprising at least one fiber glass strand according to claim 1 .

8 . A fabric comprising:
at least one fill yarn comprising at least one fiber glass strand according to claim 1 , and at least one warp yarn comprising at least one fiber glass strand according to claim 1 .

9 . The fabric of claim 8 , 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.

10 . A composite comprising:
a polymeric resin; and glass fibers from the fiber glass strand according to claim 1 disposed in the polymeric resin.

11 - 23 . (canceled)

24 . A composite comprising:
a polymeric resin; and a plurality of glass fibers disposed in the polymeric resin, wherein at least one of the plurality of glass fibers comprises a glass composition that comprises the following components:

SiO 2
53.5-77
weight percent;

B 2 O 3
4.5-14.5
weight percent;

Al 2 O 3
4.5-18.5
weight percent;

MgO
4-12.5
weight percent;

CaO
0-10.5
weight percent;

Li 2 O
0-4
weight percent;

Na 2 O
0-2
weight percent;

K 2 O
0-1
weight percent;

Fe 2 O 3
0-1
weight percent;

F 2
0-2
weight percent;

TiO 2
0-2
weight percent; and

other constituents
0-5
weight percent total.

25 . The composite of claim 24 , wherein the plurality of glass fibers are arranged to form a fabric.

26 . The composite of claim 24 , 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.

27 . The composite of claim 24 , wherein the polymeric resin comprises an epoxy resin.

28 . The composite of claim 24 , 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.

29 . An aerospace composite comprising the composite according to claim 24 .

30 . An aviation composite comprising the composite according to claim 24 .

31 . A radome comprising the composite according to claim 24 .

32 . A prepreg comprising the composite according to claim 24 .

33 . A fiber-metal laminate comprising:
the prepreg according to claim 32 ; 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.

34 . The fiber-metal laminate according to claim 33 , further comprising a second prepreg according to claim 32 and a third metal sheet, wherein the second prepreg is positioned betwe

Assignees

• Ppg Ind Ohio Inc

Inventors

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

Classifications

• Y10T428/2964

  Artificial fiber or filament · CPC title

• Y10T428/31515

  As intermediate layer · CPC title

• Y10T442/2934

  Coating or impregnation contains vinyl polymer or copolymer · CPC title

• D02G3/18

  from glass or the like · CPC title

• F41H5/0457

  Metal layers in combination with additional layers made of fibres, fabrics or plastics · CPC title