Safran Ceramics

Centre National De La Recherche Scientifique

Université Paul Sabatier (Toulouse III)

Irt Antoine De Saint Exupery

Nicolas Laval

Bertrand Desjoyeaux

Arnaud Delehouze

Mathieu Schwartz

Sandrine Duluard

Florence Ansart

Gautier Mecuson

Fanny Grumbach

Aude Paillassa

A method for impregnating an oxide fibre roving with a matrix of alumina and silica includes a introducing an oxide fibre roving into an impregnation bath, wherein the impregnation bath is prepared by sol-gel process and includes a silica precursor in the form of a hybrid polymeric sol, an alumina precursor in the form of a colloidal sol and ceramic particles.

Pre-impregnated rovings for composite material

An installation for depositing a shaped filled roving intended to be used to manufacture a composite-material component, includes a device for feeding a fibrous roving impregnated with a composition including a binder and ceramic or carbon fillers, a die for shaping and draining the binder defined by at least one porous surface, the die having an evolving section between an inlet section and an outlet section, the inlet section being larger than the outlet section, a support in communication with the die outlet on which the shaped roving is to be deposited, and a first conveying device configured to convey the roving from the feed device through the die and to the support.

Facility for depositing a shaped filed roving

A method of fabricating a composite part, includes forming a fiber preform for the part that is to be obtained by depositing a plurality of fiber structures impregnated with a thermoplastic polymer onto a surface, with deposition being performed by automated fiber placement; eliminating the thermoplastic polymer present in the preform by dissolution with a solvent; and injecting a liquid impregnation composition into the pores of the fiber preform after eliminating the thermoplastic polymer in order to form a matrix in the pores of the fiber preform.

Method for the production of a part made from a composite material

Growing community of inventors

Moissy-Cramayel, France

Nicolas Laval