POWER CABLE CONTAINING THERMOPLASTIC ELECTRIC INSULATION LAYER WITH VOLTAGE STABILIZER

摘要

1. A cable comprising at least one electrical conductor and at least one electrical insulating layer surrounding said electrical conductor, said at least one electrical insulating layer comprising: (a) a thermoplastic polymer material selected from: - at least one copolymer (i) propylene with at least one olefin comonomer selected from ethylene and a non-propylene α-olefin, said copolymer having a melting point greater than or equal to 130 ° C and an enthalpy of from 20 J / g to 90 J / g; a mixture of at least one copolymer (i) with at least one ethylene copolymer (ii) with at least one α-olefin, said copolymer (ii) having a melting enthalpy from 0 J / g to 70 J / g; a mixture of at least one propylene homopolymer with at least one copolymer (i) or copolymer (ii); wherein at least one of the copolymer (i) and copolymer (ii) is heterophasic copolymer; (b) at least one liquid dielectric, carefully mixed with a thermoplastic polymer material, m said at least one liquid dielectric is an aromatic liquid dielectric with a ratio of the number of aromatic carbon atoms to the total number of carbon atoms greater than or equal to 0.3; (c) at least one voltage stabilizer selected from substituted benzophenones and sterically hindered amines. 2. The cable according to claim 1, wherein the copolymer (i) is a propylene / ethylene copolymer. The cable according to claim 1, wherein in the copolymer (i) or copolymer (ii) or both, when it (s) is heterophasic (s), the elastomeric phase is present in the ring