Method for producing flame retardant porous products and products produced thereby
AssigneeUniversity of Dayton
InventorIval O. Salyer
Life of this patent
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Abstract
A method for fire retarding porous products used for thermal energy storage and products produced thereby is provided. The method includes treating the surface of the phase change material-containing porous products with a urea fire-retarding agent. Upon exposure to a flame, the urea forms an adduct with the phase change material which will not sustain combustion (is self-extinguishing) in air. No halogens or metal oxides are contained in the fire retardant, so no potentially noxious halide smoke or fumes are emitted if the product is continuously exposed to a flame.
Claims25
A method of producing a flame retardant porous product containing a phase change material therein comprising the step of treating said porous product with a urea flame retarding agent which is free of halogens and metal oxides, wherein said phase change material and said flame retarding agent form an adduct upon exposure to a flame and will not sustain combustion.
A method of producing a flame retardant porous product comprising the steps of:
- a) incorporating a phase change material into said porous product;
- and
- b) treating said porous product containing said phase change material with a urea fire retardant which is free of halogens and antimony oxides;
- wherein said phase change material and said fire retardant form an adduct upon exposure to a flame and will not sustain combustion.
A flame retardant porous product containing a phase change material therein and including a urea flame retarding agent on its surface, said urea flame retarding agent being free of halogens and metal oxides, wherein said phase change material and said urea flame retarding agent form an adduct upon exposure to a flame and will not sustain combustion.
A method of producing a flame retardant porous product containing a phase change material therein comprising the step of treating said porous product with a liquid urea flame retarding agent which is free of halogens and metal oxides, wherein said phase change material and said flame retarding agent form an adduct upon exposure to a flame and will not sustain combustion.
A method of producing a flame retardant porous product containing a phase change material therein comprising the step of treating said porous product with a urea flame retarding agent which is free of halogens and metal oxides, wherein said urea flame retarding agent is in the form of a solution comprising urea, water and a surfactant, and wherein said phase change material and said flame retarding agent form an adduct upon exposure to a flame and will not sustain combustion.
A method of producing a flame retardant porous product comprising the steps of:
- a) incorporating a phase change material into said porous product;
- and
- b) treating said porous product containing said phase change material with a liquid urea fire retardant which is free of halogens and antimony oxides;
- wherein said phase change material and said fire retardant form an adduct upon exposure to a flame and will not sustain combustion.
A method of producing a flame retardant porous product comprising the steps of:
- a) incorporating a phase change material into said porous product;
- and
- b) treating said porous product containing said phase change material with a urea fire retardant which is free of halogens and antimony oxides;
- wherein said urea fire retardant is in the form of a solution comprising urea, water and a surfactant;
- and wherein said phase change material and said fire retardant form an adduct upon exposure to a flame and will not sustain combustion.
Dependencies are inferred from the claim text.