An elastomeric blend is described, which can be used for preparing electric cables comprising one or more polymers selected from:
(i) a polymer (Base 1) obtained by means of shear treatment, in the presence of hydroperoxides, of a polymeric base essentially consisting of elastomeric copolymers of ethylene with propylene (EPM) or EPDM terpolymers and relative blends, EPDM terpolymers being preferred;
(ii) a copolymer of ethylene with alpha olefins, vinyl acetate or a derivative of acrylic acid (Base 2); said copolymer (ii) having a melting point lower than 115°C, preferably lower than 100°C.
描述了一种可用于制备电缆的弹性混合物,它由一种或多种
聚合物组成,这些
聚合物选自
(i) 一种
聚合物(基料 1),在
氢过
氧化物存在的情况下,通过对主要由
乙烯与
丙烯的弹性共聚物(E
PM)或三元
乙丙橡胶(EP
DM)三元共聚物及相关混合物组成的
聚合物基料进行剪切处理而获得,三元
乙丙橡胶三元共聚物为首选;
(ii)
乙烯与α-
烯烃、
醋酸乙烯或
丙烯酸衍
生物的共聚物(基料 2);所述共聚物 (ii) 的熔点低于 115°C,最好低于 100°C。