Chemical process for stripping surfaces
AssigneeThe Boeing Company
InventorMichael C. Beatty
Life of this patent
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Abstract
A method of chemically stripping a surface is described. The method comprises applying a sealant to at least a portion of a surface of an object, the surface comprising a coating and one or more ingression points, the sealant filling the one or more ingression points to form a sealed surface. The method further comprises applying a stripping agent to the sealed surface to remove at least a portion of the coating to form a stripped surface.
Claims21
A method of chemically stripping a surface, the method comprising:
- applying a sealant to at least a portion of a surface of an object, the surface comprising a coating and one or more ingression points, the sealant filling the one or more ingression points to form a sealed surface;
- and
- applying a chemical stripping agent to the sealed surface to chemically remove at least a portion of the coating to form a stripped surface;
- and
- immediately coating the stripped surface with a surfacer layer after applying the chemical stripping agent;
- wherein the chemical stripping agent comprises hydrogen peroxide, benzyl alcohol, or a combination thereof;
- wherein the sealant is chemically resistant to the chemical stripping agent;
- and
- wherein applying the sealant comprises mixing a sealant precursor with a curing agent to form a sealant composition, depositing the sealant composition on at least a portion of the surface of the object, and allowing the sealant composition to cure while air drying.
A method of chemically stripping a surface of an aircraft, the method comprising:
- applying a sealant to at least a portion of a surface of the aircraft, the surface comprising a coating and one or more ingression points, the sealant filling the one or more ingression points to form a sealed surface;
- applying a chemical stripping agent to the sealed surface to chemically remove at least a portion of the coating to form a stripped surface;
- immediately coating the stripped surface with a surfacer layer;
- and
- wherein the chemical stripping agent comprises hydrogen peroxide, benzyl alcohol, or a combination thereof;
- wherein the sealant is chemically resistant to the stripping agent;
- and
- wherein applying the sealant comprises mixing a sealant precursor with a curing agent to form a sealant composition, depositing the sealant composition on at least a portion of the surface of the aircraft, and allowing the sealant composition to cure while air drying.
A method of employing a surfacer as a barrier layer when chemically stripping a surface of a composite part, the method comprising:
- providing a composite part that comprises a surfacer layer between the composite part and an outer layer disposed on the composite part;
- and
- applying a chemical stripping agent to a surface of the outer layer thereby chemically removing at least a portion of the outer layer to expose the surfacer layer, wherein the surfacer layer is not removed to expose the composite, the surfacer layer thereby protecting the composite from the stripped agent;
- wherein the chemical stripping agent comprises hydrogen peroxide, benzyl alcohol, or a combination thereof;
- wherein the sealant is chemically resistant to the stripping agent;
- and
- wherein applying the surfacer layer comprises mixing a sealant precursor with a curing agent to form a sealant composition, depositing the sealant composition on at least a portion of the surface of the composite part, and allowing the sealant composition to cure while air drying.
Dependencies are inferred from the claim text.