COMPOSITE FOR ELECTRIC CABLES Russian patent published in 2002 - IPC

FIELD: electrical engineering; peroxide cross-linked ethylene polymer composites for preparing electric-cable insulating layer. SUBSTANCE: composite is characterized in that its additives have N-mixed compound of 2.2,6.6- tetramethylpiperidine as antioxidant and light regulator, as well as in that composite retains 75% of its ultimate breaking strength and at least 75% of elongation at rupture upon testing at 135 C for 21 days in compliance with IEC 811 standard. This additive functions as composite light regulator and thermal oxidation regulator and also provides for inhibiting moisture thereby reducing risk of water trickling. Best composite is free from commonly used antioxidants such as phenolic ones or antioxidants of organic phosphate type and sulfur-containing antioxidants. EFFECT: improved physical properties, enhanced stability of cable insulating layer under various operating conditions. 7 c, 3 tbl, 3 ex