POWER CABLE COMPRISING AT LEAST A NANOCOMPOSITE COMPONENT COATING LAYER

L'invention concerne un câble d'énergie (1) comprenant une âme (2) en matériau conducteur et au moins une couche de revêtement (4), caractérisé en ce que ladite couche (4) est constituée essentiellement d'un matériau comprenant un composé inorganique à structure feuilletée et un composé organique inséré entre les feuillets dudit composé inorganique. The power cable comprises a conductive core and at least one coating consisting of a material comprising an inorganic compound having a layered structure and an organic compound inserted between the layers of the inorganic compound. The inorganic compound comprises a mineral oxide in the form of a clay, and the organic compound comprises a polymer, monomer or oligomer. The coating comprises, based on the above structure, an insulator or an external coating, or, in the case of a medium-to-high tension power cable, includes at least a semiconducting shield based on the above structure. An Independent claim is given for fabrication of the power cable, comprising: (a) treating the inorganic compound, preferably clay, with an agent, preferably selected from a tertiary ammonium salt, polyethylene oxide and a phosphorus derivative, that ensures its compatibility with the organic compound; and (b) mixing the obtained composition with the organic compound at a temperature higher than that of softening or fusion of the organic compound, to obtain a material comprising the organic compound inserted between the layers of the inorganic compound.