A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCEDE DE FABRICATION D'UNE PIECE EN MATERIAU COMPOSITE
La présente invention concerne un procédé de fabrication d'une pièce en matériau composite dans lequel un promoteur d'adhésion est, d'une part, greffé à la surface d'un revêtement présents sur des fils et, d'autre part, lié à une résine précurseur de céramique.
A process for manufacturing a composite part includes introducing an adhesion promoter into the pores of a fibrous preform formed by threads covered with a coating having —OH groups on its surface, the adhesion promoter including an electron-withdrawing group G1 that is reactive according to a reaction of substitution or of nucleophilic addition with the —OH groups, and a reactive group G2; grafting the adhesion promoter to the surface of the coating by a reaction of substitution or nucleophilic addition of the —OH groups on the group G1; introducing a ceramic precursor resin into the pores of the fibrous preform; polymerizing the resin introduced and bonding the grafted adhesion promoter to the resin by chemical reaction between these two compounds at the level of the group G2, and forming a ceramic matrix phase in the pores of the fibrous preform by pyrolysis of the polymerized resin.
PROCEDE DE FABRICATION D'UNE PIECE EN MATERIAU COMPOSITE
La présente invention concerne un procédé de fabrication d'une pièce en matériau composite dans lequel un promoteur d'adhésion est, d'une part, greffé à la surface d'un revêtement présents sur des fils et, d'autre part, lié à une résine précurseur de céramique.
A process for manufacturing a composite part includes introducing an adhesion promoter into the pores of a fibrous preform formed by threads covered with a coating having —OH groups on its surface, the adhesion promoter including an electron-withdrawing group G1 that is reactive according to a reaction of substitution or of nucleophilic addition with the —OH groups, and a reactive group G2; grafting the adhesion promoter to the surface of the coating by a reaction of substitution or nucleophilic addition of the —OH groups on the group G1; introducing a ceramic precursor resin into the pores of the fibrous preform; polymerizing the resin introduced and bonding the grafted adhesion promoter to the resin by chemical reaction between these two compounds at the level of the group G2, and forming a ceramic matrix phase in the pores of the fibrous preform by pyrolysis of the polymerized resin.
PROCEDE DE FABRICATION D'UNE PIECE EN MATERIAU COMPOSITE
EBERLING FUX NICOLAS (author) / BOUILLON ERIC (author) / JACOB GUY (author) / GOULLIANNE EDDY (author)
2019-07-26
Patent
Electronic Resource
French
IPC:
D06M
Behandeln von Fasern, Fäden, Garnen, Textilgut, Federn oder aus solchen Materialien hergestelltem Fasergut, soweit nicht anderweitig in Klasse D06 vorgesehen
,
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
/
C04B
Kalk
,
LIME
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