Title :
PD Resistance Evaluation of LDPE/MgO Nanocomposite by a Rod-to-Plane Electrode System
Author :
Tanaka, T. ; Nose, A. ; Ohki, Y. ; Murata, Y.
Author_Institution :
IPS Graduate Sch., Waseda Univ., Tokyo
Abstract :
Low density polyethylene (LDPE) was melt-compounded with MgO nano-fillers to produce LDPE/MgO nanocomposite. Its partial discharge (PD) resistance was evaluated by using a rod-to-plane electrode system. Erosion depth was measured as an index of PD resistance. Permittivity and tan delta were also measured to investigate interfacial morphological change due to nanostructuration. It was found that LDPE exhibits the increase in its partial PD resistance, if it is filled with the nanofillers by 1 to 10 phr (parts per hundred parts of resins). It should be noted that marked improvement appears in their content even as small as 1 phr. This tendency also appears for the permittivity of the same nanocomposite, i.e. the permittivity seems to show a minimum point, when nanofillers are added by 1 phr. PD resistance and dielectric properties of LDPE/MgO nanocomposite are discussed in terms of a multi-core model
Keywords :
dielectric materials; electrodes; magnesium compounds; nanocomposites; organic-inorganic hybrid materials; partial discharges; permittivity; polyethylene insulation; LDPE-MgO nanocomposite; MgO; PD resistance evaluation; dielectric properties; erosion depth measurement; interfacial morphology; low density polyethylene; multicore model; nanofillers; partial discharge resistance; permittivity; rod-to-plane electrode system; Dielectrics; Electric resistance; Electrical resistance measurement; Electrodes; Immune system; Partial discharges; Permittivity; Polyethylene; Polymers; Scanning electron microscopy;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284180
