PROCEDE DE MODIFICATION DE LA SURFACE DE MATERIAUX CARBONES PAR REDUCTION ELECTROCHIMIQUE DE SELS DE DIAZONIUM, NOTAMMENT DE FIBRES DE CARBONE POUR MATERIAUX COMPOSITES, MATERIAUX CARBONES AINSI MODIFIES.

摘要

Process for modyfying the surface of carbon-containing materials by electrochemical reduction of diazonium salts, applicable in particular to carbon fibres for composite materials, and carbon-containing materials so modified. According to the process, the carbon-containing material is used as a cathode (3) in an electrolysis unit containing a diazonium salt solution ArN2x<-> (2) in an aprotic solvent and by electrochemical reduction to a suitable potential, the aromatic group (Ar) is bound to the carbon-containing material. Any aromatic group can be bound in this way to the carbon-containing material, for instance C6H4NO2, C6H4NH2, C6H4COOH, and then reacted with suitable compounds.