	US 11,746,060 B2
	Method for manufacturing a composite material part using a hybrid cross-linked copolymer
Marion France Hélène Schmidt, Moissy-Cramayel (FR); Samuel Jean-Charles Bernard, Saint-Just-le-Martel (FR); and Nicolas Eberling-Fux, Moissy-Cramayel (FR)
Assigned to CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); SAFRAN CERAMICS, Le Haillan (FR); UNIVERSITE DE BORDEAUX, Bordeaux (FR); UNIVERSITE DE MONTPELLIER, Montpellier (FR); and ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIER, Montpellier (FR)
Appl. No. 18/8,579
Filed by SAFRAN CERAMICS, Le Haillan (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITE DE BORDEAUX, Bordeaux (FR); UNIVERSITE DE MONTPELLIER, Montpellier (FR); and ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIER, Montpellier (FR)
PCT Filed Jun. 2, 2021, PCT No. PCT/FR2021/050997 § 371(c)(1), (2) Date Dec. 6, 2022, PCT Pub. No. WO2021/250340, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 2005990 (FR), filed on Jun. 9, 2020.
Prior Publication US 2023/0192559 A1, Jun. 22, 2023
Int. Cl. C04B 35/80 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/64 (2006.01); C08G 79/08 (2006.01); C08G 77/62 (2006.01); C04B 35/632 (2006.01)

CPC C04B 35/80 (2013.01) [C04B 35/6269 (2013.01); C04B 35/62871 (2013.01); C04B 35/62886 (2013.01); C04B 35/632 (2013.01); C04B 35/64 (2013.01); C08G 77/62 (2013.01); C08G 79/08 (2013.01); C04B 2235/3856 (2013.01); C04B 2235/3873 (2013.01); C04B 2235/483 (2013.01); C04B 2235/486 (2013.01); C04B 2235/5252 (2013.01); C04B 2235/616 (2013.01); C04B 2235/721 (2013.01)]

11 Claims

1. A method for manufacturing a part made of composite material comprising:

forming a ceramic matrix phase in pores of a fibrous preform by pyrolysis of a cross-linked copolymer ceramic precursor, said cross-linked copolymer comprising a first precursor macromolecular chain of a first ceramic having free carbon, and a second precursor macromolecular chain of a second ceramic having free silicon, the first macromolecular chain being bonded to the second macromolecular chain by cross-linking bridges comprising a bonding structure of formula *¹—X—*²; in this formula, X designates boron or aluminium, -*¹designates the bond to the first macromolecular chain and -*²the bond to the second macromolecular chain.