A flame-retardant electric cable (10) is disclosed, the cable (10) having a core comprising an electric conductor (11) and an electrically insulating layer (12) comprising a flame-retardant polyolefin-based composition comprising:a) as base polymer, a mixture of at least two polyolefin homopolymers and/or copolymer wherein at least one is a low-density polyethylene copolymer having a density lower than 0.915 g/cm3;b) calcinated kaolin in an amount greater than 3 phr;c) a metal hydroxide in an amount greater than 10 phr; andd) an alkyl or alkenyl alkoxy siloxane,wherein the alkyl or alkenyl alkoxy siloxane is in an amount ratio of from 1:25 to 1:50 with respect to the sum of the amounts of calcinated kaolin and of the metal hydroxide.
展开▼
机译：公开了一种阻燃电缆（10），该电缆（10）具有包含电导体（11）的芯和包含阻燃聚烯烃基组合物的电绝缘层（12），该组合物包含：a）作为基础聚合物，是至少两种聚烯烃均聚物和/或共聚物的混合物，其中至少一种是密度低于0.915 g / cm3的低密度聚乙烯共聚物;b）煅烧高岭土的量大于3 phr;c）大于10 phr的金属氢氧化物;和d）烷基或烯基烷氧基硅氧烷，其中，相对于煅烧高岭土和金属氢氧化物的总量，烷基或链烯基烷氧基硅氧烷的比例为1:25至1:50。
展开▼
