Polyethylene Based Ionomers as High Voltage Insulation Materials

Polyethylene based ionomers are demonstrated to feature a thermo-mechanical and dielectric property portfolio that is comparable cross-linked polyethylene (XLPE), which may enable the design of more sustainable high voltage direct-current (HVDC) power cables, crucial component future electricity grids seamlessly integrate renewable sources energy. A new type ionomer obtained via high-pressure/high-temperature free radical copolymerization ethylene in presence small amounts ion-pair comonomers comprising amine terminated methacrylates methacrylic acid. The synthesized crystallinity, melting temperature, rubber plateau modulus thermal conductivity like XLPE but remain melt-processable. Moreover, preparation byproducts, readily yields highly insulating material with low loss tangent (DC) electrical 1 6·10−14 S m−1 at 70 °C an electric field 30 kV mm−1. Evidently, investigated represent promising alternative XLPE-based insulation, permit ease production as well end-of-use recycling HVDC cables by combining advantages thermoset thermoplastic materials while avoiding formation byproducts.