Low density and high strength fiber glass for reinforcement applications

Patent metadata

Field	Value
Publication number	US-10647610-B2
Application number	US-201615161506-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	Dec 14, 2006
Publication date	May 12, 2020
Grant date	May 12, 2020

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 yarn comprising at least one 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. The yarn of claim 1 , wherein the at least one fiber glass strand is at least partially coated with a sizing composition.

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

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

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

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

7. 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 .

8. The fabric 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.

9. The yarn 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.

Assignees

• Ppg Ind Ohio Inc

Inventors

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

Classifications

• C08J5/043

  with glass fibres · CPC title

• C03C2213/00

  Glass fibres or filaments · CPC title

• B29C70/22

  oriented in at least two directions forming a two-dimensional [2D] structure · CPC title

• Y10T428/298

  Physical dimension · CPC title

• F41H5/0457

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