Method of preparation of a composite material based on carbon reinforced by carbon fibers and a composite material based on carbon reinforced by carbon fibers

摘要

The present invention relates to a composite material based on carbon reinforced by carbon fibers, and to a process for the preparation of that -. & / p & & p & the object of the invention is to provide a material having an increased resistance in the direction parallel to the surface of the nonwoven fabric laminate, and which satisfies the requirements relating to the products of large size and of complex shapes. / p & & p & this object is achieved by means of a method which consists in coating of the non-woven cloth 1 of carbon fibers with a liquid containing a load 2, in that the non-woven fabrics are laminated on one another and in that they are subjected to a needling repeated with a plurality of needles 4 so as to form a pre-printed with a three-dimensional structure. / p & & p & this invention relates more particularly the astronautics and the aeronautical industry.