PREPARATION OF CARBON COMPOSITE ELEMENT WITH LARGE AREA AND SELF-ASSEMBLING WHOLE CARBON COMPOSITE ELEMENT MADE THEREOF

摘要

Method for making carbon composite components (1), having an edge (2) and a central part (3), comprising at least one layer (4) of carbon/carbon composite and at least one layer (5) of recompressed expanded graphite, characterised in that, with the aim of obtaining an impervious carbon composite component (1) with a central part (3) having a high degree of deformation and/or with an edge (2) permitting self-assembly of the said component, … …  a) a stack (8) is prepared of at least one prepreg layer (6) based on carbon fibre and of at least one layer (7a) of expanded graphite having a relative density lying between 0.03 and 0.06, …  b) the stack (8) is compressed with a pressure lying between 2.5 and 15 MPa and at a temperature lying between 50 and 200C so that the thickness of the edge (2) is not less than that of the central part (3) and that the relative density of the expanded graphite lies between 0.3 and 0.6 for the edge and between 1 and 1.5 for the central part, …  c) the compressed component is thermally treated at a temperature lying between 400 and 3000C. … …??Composite components manufactured by this method and application to the manufacture of heat-exchanger plates and of pervaporation modules. …IMAGE…