A NEW LOW MFR POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE
    6.
    发明公开
    A NEW LOW MFR POLYMER COMPOSITION, POWER CABLE INSULATION AND POWER CABLE 有权
    NEUE POLYMERZUSAMMENSETZUNG MIT NIEDRIGER MFR,STROMKABELISOLIERUNG UND STROMKABEL

    公开(公告)号:EP3083797A1

    公开(公告)日:2016-10-26

    申请号:EP14755639.3

    申请日:2014-08-19

    申请人: Borealis AG

    摘要: The present invention relates to a polymer composition comprising a polyolefin, peroxide and a sulphur containing antioxidant, wherein said peroxide is present in an amount which corresponds to X mmol —O—O—/kg polymer composition and said sulphur containing antioxidant is present in an amount which corresponds to Y mmol —OH/kg polymer composition, wherein Y1≦Y≦Y2, X≦45 and 0.9*Y+m≦X≦n−k*Y, wherein Y1 is 0.50 and Y2 is 10, and m is 0.8, n is 70 and k is 4.7; and wherein said polymer composition has a melt flow rate (MFR) of less than 1.7, and said polymer composition comprises less than 0.05% by weight (wt %) 2,4-Diphenyl-4-methyl-1-pentene; a crosslinked polymer composition, and use thereof, a power cable insulation, a power cable, useful in high voltage (HV DC) and extra high voltage (EHV DC) direct current applications, and a method for reducing electrical conductivity of a crosslinked polymer composition.

    摘要翻译: 本发明涉及包含聚烯烃,过氧化物和含硫抗氧化剂的聚合物组合物,其中所述过氧化物的存在量相当于X mmol-O-O- / kg聚合物组合物,并且所述含硫抗氧化剂存在于 对应于Y mmol -OH / kg聚合物组成的量,其中Y1≤Y≤Y2,X≤45和0.9 * Y +m≤X≤n-k * Y,其中Y1为0.50,Y2为10,m为 0.8,n为70,k为4.7; 并且其中所述聚合物组合物的熔体流动速率(MFR)小于1.7,所述聚合物组合物包含小于0.05重量%(重量)的2,4-二苯基-4-甲基-1-戊烯; 交联聚合物组合物及其用途,用于高压(HV DC)和超高压(EHV DC)直流应用的电力电缆绝缘,电力电缆以及降低交联聚合物组合物的导电性的方法 。