MFR A new crosslinked low MFR polymer composition power cable insulation and power cable

摘要

The present invention relates to a crosslinked polymer composition obtained by crosslinking a polymer composition having a melt index (MFR) of less than 1.7 and comprising a polyolefin, a peroxide and a sulfur-containing antioxidant, The combined polymer composition had an oxidation induction time determined according to ASTM-D3895, ISO / CD 11357 and EN 728 using differential scanning calorimetry (DSC), the oxidation induction time corresponding to Z minutes, Z = Z2, W1? = W? = W2, and W? P-270 * Z, wherein Z1 is 0, Z2 is 60, W1 is 0, W2 is 9500, and p is 18500; And its use, power cable insulation and power cables, high voltage direct current (HV DC) and ultra high voltage direct current (EHV DC) applications.