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AssigneeSociete Europeenne de Propulsion
InventorsAline Balhadere, Jacques Thebault, Bruno Bernard
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Prior to applying an impregnation composition constituted by a solution of at least one phosphate, a part made of composite material is treated in depth by means of an aqueous solution that penetrates into the open internal pores of the composite material, and is then dried. The aqueous solution contains an additive which, after drying, imparts to the composite material, increased wettability by the impregnation composition. The additive contained in the aqueous solution is preferably constituted by at least one wetting agent that is soluble in water and non-ionic, such as an oxyethylenated fatty acid, an oxyethylenated fatty alcohol, an oxyethylenated alkyl-phenol or an ester of a high polyol.
A method for the protection against oxidation of a part made of a composite material containing carbon and presenting open internal residual pores, said method comprising the steps of:
Dependencies are inferred from the claim text.