Process for manufacturing a composite part and rtm obtained composite rod according to this procedure.

摘要

Process for manufacturing a composite RTM, Resin Transfer Molding (Transfer Molding Resin), having the following steps piece: - a part (10, 11) prepreg is performed, taking this piece (10, 11) fibers (12) aligned with each other, these fibers impregnated with a first resin being - is subjected only the first resin of the preimpregnated part to a first step of partial polymerization to a state such that the first resin is sufficiently rigid that the fibers are fixed in position inside the resin, the first resin polymerized partially to a degree of polymerization between 5% and 70%, - it is placed around a support (1) the part (10, 11) prepolymerized preform (8) fibrous dried, the preform having elements (6, 13) fiber having these fibrous elements (6, 13) fibers (7) dry - a second resin into the fibrous preform is injected, and - in a second stage p olimerización the second resin is polymerised and polymerised first resin simultaneously.