초록 ▼

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 con

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.

대표청구항 ▼

[ We claim:] [1.] 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:in-depth treating a part made of a composite material by introducing an aqueous solution into open

[ We claim:] [1.] 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:in-depth treating a part made of a composite material by introducing an aqueous solution into open internal pores of the composite material, the aqueous solution including a wetting agent,drying the part to leave a deposit of said wetting agent in the internal pores of the composite material,thereafter impregnating the part with an impregnation composition comprising a solution of at least one phosphate, said wetting agent deposit imparting to the composite material increased wettability by the impregnation composition to allow substantial in-depth penetration of the impregnation composition into the internal pores of the composite material, andheat-treating the impregnated part to obtain an internal phosphate type protection against oxidation that is substantially anchored within the volume of the composite material.