Semi-conductive cable compounds are used in the wire and cable industry as two semi-conductive layers for enclosing crosslinked Polyethylene (XLPE) layers to ensure the insulation performance of medium- and high-voltage power cables. The production process requires that the conductive carbon black structure is not destroyed, highly dispersed into a polymer matrix, and evenly distributed to the melts to obtain a homogeneous compound. At the same time, the polymer is required to be degraded as little as possible.
Peroxide XLPE (Peroxide cross-linkable polyethylenes) is made by mixture, plasticization and granulation with the low-density polyethylene as the basic resin mixed with cross linking agent and other additives. XLPE insulation is effective at high and low temperatures. Due to its unique structure, XLPE is not only extremely resistant to wear but also resistant to high voltage electricity, chemicals and other harmful substances. Cross-linked polyethylene insulation is also a more affordable option. Peroxide cross-linkable XLPE is increasingly used for medium voltage and high voltage AC cable insulation.