Compositions and methods for the protection of substrates from heat flux and fire

Patent metadata

Field	Value
Publication number	US-11512208-B2
Application number	US-201916426635-A
Country	US
Kind code	B2
Filing date	May 30, 2019
Priority date	Aug 1, 2006
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A flame or heat flux protective coating composition, which includes a dispersion of fiberglass, hollow glass spheres, or a combination of both in silicone. A flame or heat flux protective sheet, which includes hollow glass spheres dispersed in silicone in a sheet form or fiberglass and silicone in a sheet form, wherein the fiberglass is dispersed in the silicone or the fiberglass is a woven cloth coated with the silicone is also presented. Articles incorporating the flame or heat flux protective coating or sheet form and methods for coating an article with the flame or heat flux protective coating composition are also presented.

First claim

What is claimed is:

1. A sprayable flame or heat flux protective coating composition consisting of:
(1) a silicone component comprising a polymer comprising dimethylsiloxane, wherein said silicone component starts to decompose at or above 400° F.;
(2) fiberglass dispersed in the silicone component in an amount between about 8% and about 14% by weight of the composition; and
(3) hollow glass spheres dispersed in the silicone component in an amount from about 0.1% to about 10% by weight of the composition.

2. The composition of claim 1 , wherein the fiberglass is present in an amount from about 8% to about 12% by weight of the composition.

3. The composition of claim 1 , wherein the hollow glass spheres are present in an amount from about 0.25% to about 10% by weight of the composition.

4. The composition of claim 1 , wherein the hollow glass spheres are present in an amount from about 5% to about 10% by weight of the composition.

5. The composition of claim 1 , wherein the composition comprises fiberglass fibers having a length from about 1 mm to about 20 mm.

6. The composition of claim 1 , wherein the composition comprises fiberglass fibers having a diameter from about 6 μm to about 19 μm.

7. The composition of claim 1 , wherein the composition comprises hollow glass spheres of a diameter from about 5 μm to about 30 μm.

8. The composition of claim 1 , wherein the composition comprises fiberglass wherein at least a portion of sizing material has been removed from the fiberglass.

9. An article comprising at least a portion of a surface coated with the composition of claim 1 .

10. The article of claim 9 , wherein the surface comprises a material selected from the group consisting of metal, thermoplastics, thermoplastic composites, polyethylene, wood, stone, ceramics, glass, masonry materials, and combinations thereof.

11. The article of claim 10 , wherein the metal comprises steel.

12. The article of claim 9 , wherein said article is selected from the group consisting of steel ammunition boxes, railroad ties, plastic piping, lumber, sheet piling, boat hulls, pick-up truck beds, gasoline canisters, fuel tanks in automobiles, airplanes, ships, and submarines, steel skyscraper structures, bridges, areas near high temperature operating components, infrastructure, building support structures, cables in suspension bridges, and high-pressure storage tanks.

13. A flame or heat flux protective sheet consisting of a woven cloth comprising fiberglass, wherein the cloth is coated with a sprayable flame or heat flux protective coating composition consisting of:
(1) a silicone component comprising a polymer comprising dimethylsiloxane, wherein said silicone component starts to decompose at or above 400° F., and (2) hollow glass spheres dispersed in the silicone component in an amount from about 0.1% to about 10% by weight of the composition.

14. An article comprising the protective sheet of claim 13 , wherein the article is selected from the group consisting of fabrics, steel ammunition boxes, railroad ties, plastic piping, lumber, sheet piling, boat hulls, pick-up truck beds, gasoline canisters, fuel tanks in automobiles, airplanes, ships, and submarines, steel skyscraper structures, bridges, areas near high temperature operating components, infrastructure, building support structures, cables in suspension bridges, and high-pressure storage tanks.

15. The article of claim 14 , wherein the fabric is incorporated in fire protective clothing or a fire protective blanket.

16. The protective sheet of claim 13 , wherein the woven cloth consists of woven fiberglass.

17. A method for coating an article with a flame or heat flux protective sheet comprising applying the protective sheet of claim 13 to at least a portion of the article.

18. A method for coating an article with a flame or heat flux protective coating layer comprising spraying the composition of claim 1 to at least a portion of the article.

Assignees

• Univ Rutgers

Inventors

• Nosker Thomas J
• Lynch-Branzoi Jennifer K
• Mazar Mark
• Nosker Patrick L

Classifications

• D06N3/128

  with silicon polymers · CPC title

• C09D7/70

  characterised by shape, e.g. fibres, flakes or microspheres · CPC title

• Y10T428/31663

  As siloxane, silicone or silane · CPC title

• C09D7/61 Primary

  inorganic · CPC title

• C08K7/14

  Glass · CPC title