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Fire resistant composite panel

A composite board, refractory technology, applied in the direction of thin material processing, construction, building construction, etc., can solve the problem that the board does not effectively resist high heat or open flame, is difficult to fit, burns or undergoes significant carbonization

Inactive Publication Date: 2014-06-18
GRAFTECH INT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Unfortunately, most of the panels claimed in all the prior art are not effective against high heat or open flames, will burn or undergo significant charring
In addition, prior art panels generally lack high strength:density ratios, making them less suitable for applications where lightweight, insulating, fire-resistant yet strong panels are necessary for building structures

Method used

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  • Fire resistant composite panel
  • Fire resistant composite panel
  • Fire resistant composite panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0099] Structural insulating panels prepared as described in Table I were prepared. Data were obtained on each plate using an air / propane torch with the flame tongue held approximately 3 inches from the surface of the plate. The time for the flare to completely burn through the structure was measured and listed in Table I.

[0100] Table I

[0101]

[0102] The results shown in Table I show improved fire resistance when the heat dissipation layer is used in combination with the carbon foam core. A 1 inch thick foam sample of any density burned through relatively quickly, but even the lowest density foam survived more than 1 hour when it was combined with the heat dissipation layer of the present invention.

Embodiment II

[0104] In a large-scale fire test using radiators 24 on either side of a 3.5 inch carbon foam core 12 combined with an outer layer 16 of Type X gypsum board, the panels achieved an ASTM E-119 fire rating of at least about 2 hours.

[0105] The addition of a heat dissipation layer, especially of compressed exfoliated graphite particles, results in a composite panel with improved fire resistance. The anisotropic thermal properties of compressed exfoliated graphite sheets provide a uniquely suitable heat dissipation layer. The highly temperature stable carbon foam used in combination with the heat dissipation layer provides a panel with exceptional flame resistance. The flame retardancy and strength of the panels of the present invention provide significantly improved products for a variety of applications.

[0106] Accordingly, by carrying out the invention, a composite panel having hitherto unknown characteristics was produced with a carbon foam core and a heat dissipation lay...

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Abstract

A composite panel, which includes a heat spreading layer and a carbon foam core having desirable fire retardant properties, and resistance to environmental stress. The composite panel can also include a first layer and a second layer bound to a first surface and second surface of the carbon foam core. Applications of the panel include structural and fire retardant elements of residential and commercial buildings, aircraft and watercraft.

Description

[0001] Background of the invention technical field [0002] This application is a continuation-in-part of US Patent Application Serial No. 11 / 314,975, entitled CARBON FOAMSTRUCTURAL INSULATED PANEL, filed December 21, 2005, the details of which are incorporated herein by reference. [0003] The present invention relates to high strength fire resistant composite panels for use in applications including the construction of roofs, floors, walls, doors, elevator shafts, columns and other structures where a high strength:density ratio and increased fire resistance are useful. Furthermore, the composite panels of the present invention exhibit enhanced electromagnetic interference (EMI) shielding, making them particularly useful in environments where electronic equipment needs to be shielded from the effects of electromagnetic interference. More specifically, the present invention relates to insulating carbon foam with an R-value of about 3 / inch in combination with a heat spreading ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/00B32B3/26
CPCE04B1/942B32B5/18Y10T428/249967B32B3/26B32B9/00
Inventor D·J·米勒M·塞格Y·P·格里芬
Owner GRAFTECH INT HLDG INC