Process for producing an electrical cable, particularly for high voltage direct current transmission or distribution

摘要

Process for preparing an electrical cable comprising at least one conductor and at least one layer of extruded insulating coating, which includes: coating, by extrusion, the conductor with a polymeric composition comprising a polyethylene, a radical initiator and at least one unsaturated carboxylic acid of general formula (I) in free form: in which: R represents H or CH3; n represents 0 or 1; said unsaturated carboxylic acid being present in an amount of between 0.0006% and 0.25% by weight, said amount being expressed as the weight content of -COOH groups relative to the total weight of the polymeric composition; heating the conductor thus coated so as to obtain cross-linking of said polymeric composition.