Abstract: A polymer composition has at least one polypropylene-based thermoplastic polymer material and a dielectric liquid. The dielectric liquid has at least one mineral oil and at least one polar compound of the benzophenone type, acetophenone type or a derivative thereof.

Abstract: A polymer composition has at least one thermoplastic polymer material and a dielectric liquid of improved polarity, to a process for preparing said polymer composition, to a cable comprising at least one electrically insulating layer obtained from the polymer composition, and to a process for preparing the cable.

Abstract: A polymer mixture is provided suitable for use in a cable as a sensor polymer mixture for determining the mechanical and/or electrical stability or aging of a cable. The method may use the determination of changes in the polymer mixture, especially for determination of the aging and/or stability, for example as a measure for estimation of the wear or the remaining service life of a cable having the polymer mixture.

Abstract: A heat-shrinkable protective element having at least one protective layer is obtained from a polymeric composition having a polymer material, where the polymeric composition additionally has an electrically conducting filler having a BET specific surface of at least 100 m2/g according to Standard ASTM D 6556.

Abstract: The invention relates to a polymer composition comprising at least one thermoplastic polymer material and a dielectric liquid of improved polarity, to a process for preparing said polymer composition, to a cable comprising at least one electrically insulating layer obtained from said polymer composition, and to a process for preparing said cable.

Abstract: A semi-conductive crosslinked layer produced from a polymer composition includes at least one polymer A having at least one epoxy function. A cross-linking agent B includes at least one reactive function that can react with the epoxy function of said polymer A in order to allow the cross-linking of said polymer A. The polymer composition also has an electrically conductive filler having a specific surface area BET of at least 100 m2/g according to the ASTM standard D 6556.

Abstract: The present invention relates to an electrical device (1, 20, 30) comprising a cross-linked layer (3, 4, 5) obtained on the basis of a cross-linkable polymer composition comprising a polymer material and particles with polyhedric structure, characterized in that the particles have a melting point of at most 200° C.

Abstract: The invention relates to an electrical device (1, 20, 30) comprising a semi-conductive cross-linked layer (3, 4, 5, 21, 22, 23, 31, 32) produced from a polymer composition comprising: at least one polymer A comprising at least one epoxy function, and a cross-linking agent B comprising at least one reactive function that can react with the epoxy function of said polymer A in order to allow the cross-linking of said polymer A, characterised in that the polymer composition also comprises an electrically conductive filler having a specific surface area BET of at least 100 m2/g according to the ASTM standard D 6556.

Abstract: The present invention related to an electrical element (100, 101, 102) including an electrically conductive element (3, 5, 10, 31, 32, 51), characterized in that the electrical element also includes a first layer (1) of a polymer material with electrical conductivity gradient obtained from a polymer composition including at least one polymer and conductive carbonaceous fillers.

Abstract: A heat-shrinkable protective element having at least one protective layer is obtained from a polymeric composition having a polymer material, where the polymeric composition additionally has an electrically conducting filler having a BET specific surface of at least 100 m2/g according to Standard ASTM D 6556.

Abstract: A polymer mixture is provided suitable for use in a cable as a sensor polymer mixture for determining the mechanical and/or electrical stability or aging of a cable. The method may use the determination of changes in the polymer mixture, especially for determination of the aging and/or stability, for example as a measure for estimation of the wear or the remaining service life of a cable having the polymer mixture.