Effect of Different TS-1 on the Electrical Properties of Cross-Linked Polyethylene

Nano-composite dielectric materials are considered as the most promising insulating materials for HVDC cables. The effects of different concentration of nano-filler and structure of nanoparticle on the electrical properties of crosslinked polyethylene (XLPE) composites were studied by using three different chemical treated titanium-silicon molecular sieves TS-1 as nano-filler. The experimental results show that the dielectric properties of the composites increased by 17.76%, 19.16% and 16.36%, respectively, after TS-1 and alkali treatment for 12 h and 24 h. After the addition of the first two fillers, the resistivity was nearly doubled to 46.71% and 47.41%, respectively, and the breakdown field strength was increased by 3.40% and 9.28%, respectively. After 24 h alkali treatment, the volume resistivity and breakdown field strength of TS-1 were lower than that of pure XLPE.