Modification of Polypropylene-based Cable Insulation Material

Abstract

Polypropylene (PP) is one of the recyclable and ease processed thermoplastics，and it expected used as the cable insulation material to reply the unrecoverable material crosslinked polyethylene(XLPE). However, isotactic polypropylene which is too stiff with a lower electrical character cannot be directly used into the high voltage cable insulation system. In this paper, several polymers have been blended with polypropylene to improve the properties of the PP blend samples. Electrical and mechanical experiments of the modifying PP blends will also be done. In accordance with the experimental results, blends of PP and propylene-ethylene copolymers (PEC) are potentially more suitable for modifying PP in HV insulation.