Vacuum insulated glass (VIG) unit including nano-composite pillars, and/or methods of making the same

Patent metadata

Field	Value
Publication number	US-9670713-B2
Application number	US-201414171844-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Oct 8, 2010
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

Certain example embodiments of this invention relate to composite pillar arrangements for VIG units that include both harder and softer materials. The softer materials are located on the outside or extremities of the central, harder pillar material. In certain example embodiments, a high aspect ratio mineral lamellae is separated by an organic “glue” or polymer. When provided around a high strength pillar, the combination of the pillar and such a nano-composite structure may advantageously result in superior strength compared to a monolithic system, e.g., where significant wind loads, thermal stresses, and/or the like are encountered.

First claim

What is claimed is:

1. A vacuum insulated glass (VIG) unit, comprising:
first and second substantially parallel, spaced apart glass substrates defining a gap therebetween;
an edge seal provided around a periphery of the first and second substrates to form an hermetic seal;
a plurality of spacers provided between the first and second substrates;
a lamellar coating to impart closure stresses on the first and/or second substrates proximate to the spacers to at least partially offset tensile stresses also applied to the first and/or second glass substrates, wherein the first lamellar coating is provided across substantially an entire surface of at least one of the substrates,
a second lamellar coating provided so that the spacers are between the first and second lamellar coatings, and
wherein the gap is provided at a pressure less than atmospheric.

2. The VIG unit of claim 1 , wherein the second lamellar coating comprises MoS 2 having a substantially crystal structure.

3. The VIG unit of claim 1 , wherein the second lamellar coating comprises graphite.

4. The VIG unit of claim 1 , wherein the second lamellar coating comprises PTFE.

5. The VIG unit of claim 1 , wherein the second lamellar coating comprises a nano-clay and polymer composite coating.

6. The VIG unit of claim 5 , wherein the nano-clay and polymer composite coating comprises nanometer-sized platelets dispersed throughout an aramid polymer matrix or overcoat.

7. The VIG unit of claim 6 , wherein the platelets are approximately 1-10 nm thick and 35-300 nm in width.

8. The VIG unit of claim 7 , wherein the nano-clay and polymer composite coating has substantially no impact on visible transmission.

9. The VIG unit of claim 5 , wherein the second lamellar coating comprises 2-8% by weight nano-clay.

10. The VIG unit of claim 1 , wherein the spacers are pillars.

Assignees

• Guardian Industries

Inventors

• Veerasamy Vijayen S

Classifications

• E06B3/66304

  Discrete spacing elements, e.g. for evacuated glazing units · CPC title

• Y02B80/22

  Glazing, e.g. vaccum glazing · CPC title

• E06B3/673 Primary

  Assembling the units (E06B3/677 takes precedence {; making hollow glass sheets or bricks C03B23/24}) · CPC title

• E06B3/6612 Primary

  Evacuated glazing units · CPC title

• C03C27/10

  with the aid of adhesive specially adapted for that purpose · CPC title