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US 5,176,863 AGranted
Flexible graphite composite fire retardant wallpaper and method
AssigneeUCAR Carbon Technology Corporation
InventorRonald A. Howard
Life of this patent
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Abstract
A fire retardant flexible graphite composite is formed from particles of exfoliated flexible graphite and particles of unexfoliated graphite flake treated with an intercalating agent in a desired ratio based upon the strength and desired fire retardant properties of the composite. A wall or floor covering is formed by compressing the composite into a sheet and rolled into a roll.
Claims5
A method of forming a fire proof flexible graphite covering for a wall or floor comprising the steps of:
- contacting particles of graphite flake with an intercalating agent for forming particles of intercalated graphite;
- heating particles of intercalated graphite at an elevated temperature to form particles of exfoliated graphite;
- combining particles of intercalated graphite with particles of exfoliated graphite in a predetermined proportion;
- and
- compressing the combined particles into a densely compressed graphite sheet and rolling the compressed graphite sheet into a roll;
- wherein said particles of intercalated graphite are laid down to form a first bed of particles and wherein said particles of exfoliated graphite are laid down to form a second bed of particles with the second bed of particles superimposed over said first bed of particles for forming a two layer composite.
3 more elements
Dependencies are inferred from the claim text.