Claims
- 1. A fire-protected material comprising a member having affixed to a surface thereto a coating consisting of a mixture of:
- a) a water soluble alkali metal silicate;
- b) at least one inorganic particulate material which, when exposed to a selected flame temperature, endothermically releases a nonflammable gas; and
- c) kaolin, said kaolin serving to improve the thermal resistance of said coating;
- whereby said coating protects said member against fire temperatures by presenting an intumescent thermal barrier which substantially insulates said member from said flame temperatures, and is capable of forming a vitreous surface barrier when exposed to flame.
- 2. The material of claim 1 wherein said member is formed of a material selected from the group consisting of steel and aluminum.
- 3. The material of claim 1 wherein said member is a cellulosic material.
- 4. The material of claim 1 wherein said member is a foamed polymeric material.
- 5. The material of claim 1 further comprising a water-insoluble coating on an outer surface of said coating to protect against dissolution thereof upon exposure to water.
- 6. The material of claim 5 wherein said water-insoluble coating comprises calcium sulfate or a cement.
- 7. The material of claim 1 wherein said inorganic particulate material is selected from the group consisting of a hydrated aluminum oxide, hydrated borate, carbonates, bicarbonates, and mixtures thereof.
- 8. The material of claim 1 wherein said inorganic particulate material comprises alumina trihydrate.
REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of copending U.S. application Ser. No. 260,400 filed Oct. 20, 1988, now U.S. Pat. No. 4,871,477 which is a continuation-in-part of copending U.S. application Ser. No. 230,054 filed Aug. 9, 1988, now abandoned.
US Referenced Citations (27)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0139622 |
Dec 1978 |
JPX |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
260400 |
Oct 1988 |
|
Parent |
230054 |
Aug 1988 |
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