PROCESS FOR MANUFACTURING A THERMOSTRUCTURAL COMPOSITE PART

摘要

The invention relates to a process for manufacturing a part made of a com posite comprising a fibrous reinforcement densified by a matrix, which proce ss comprises the steps of: production of a fibrous preform consolidated by i mpregnation (S4) of a fibrous texture comprising yarns by means of a liquid consolidation composition containing a precursor of a consolidating material and transformation (S7) by pyrolysis of the precursor made of consolidating material so as to obtain a consolidated preform of maintained shape; and de nsification (S8) of the consolidated fibrous preform by chemical vapour infi ltration, characterized in that it includes, before the impregnation (S4) of the fibrous texture with the liquid consolidation composition, a step (S2) of filling the porosity of the yarns of said texture by means of a filling c omposition.