Highly insulating thermoplastic blends comprising a styrenic copolymer for direct‐current power cable insulation

The impact of the composition blends comprising low-density polyethylene (LDPE), isotactic polypropylene (PP) and a styrenic copolymer additive on thermomechanical properties as well direct-current (DC) electrical thermal conductivity is investigated. presence 5 weight percent (wt%) strongly reduces amount PP that needed to enhance storage modulus above melting temperature LDPE from 40 24 wt%. At same time, improves consistency resulting ternary blends. While both DC decrease with content, addition appears have little influence either property. Evidently, in combination small amounts not only allows reinforce at elevated temperatures but also functions an conductivity-reducing additive, which makes such thermoplastic formulations possible candidates for insulation high-voltage power cables.