PIECE EN MATERIAU COMPOSITE MUNIE D'UNE PROTECTION THERMIQUE A BASE DE RESINE ET SON PROCEDE DE FABRICATION

Pièce de structure (10) comprenant une âme structurale (11) en matériau composite constitué d'un renfort fibreux densifié par une matrice organique caractérisée en ce qu'elle comprend en outre une barrière de protection thermique (12) sur au moins une partie d'une face de l'âme structurale, ladite barrière de protection thermique étant constituée par une couche de résine durcie. A method of making a structural part having a thermal protection barrier is provided. The method includes: making a fiber structure; introducing the fiber structure into an injection mold having first and second chambers, the fiber structure being placed in the second chamber; placing a movable separator partition between the first and second chambers; injecting a first resin into the first chamber; solidifying the resin injected into the first chamber; withdrawing the movable separator partition; injecting a second resin into the second chamber containing the fiber texture; and hardening the resins present in the first and second chambers of the injection mold in such a manner as to obtain a part having a structural core made of composite material constituted by fiber reinforcement densified by an organic matrix, and a thermal barrier constituted by a layer of hardened resin.