Title :
Space charge behavior in multi-layered dielectrics with LDPE and LDPE/MgO nanocomposites
Author :
Kanegae, Etsu ; Ohki, Yoshimichi ; Tanaka, Toshikatsu ; Sekiguchi, Yoitsu ; Murata, Yoshinao ; Reddy, C.C.
Author_Institution :
Dept. of Electr. Eng. & Biosci., Waseda Univ., Tokyo, Japan
Abstract :
Space charge distributions were investigated in multi-layered dielectric films consisting of combinations of low-density polyethylene (LDPE) and its nanocomposite (NC) with MgO nano-fillers during application of a dc electric field of 100 kV/mm at room temperature and 50°C. At 100 kV/mm, a packet-like charge appears in LDPE, but not in NC. Similar behavior is also observed in multi-layered samples. These phenomena are explained by assuming that the nano-fillers effectively suppress the increase in conductivity induced by the high electric field, which agrees well with related work done previously by the authors.
Keywords :
magnesium compounds; nanocomposites; oxygen compounds; polyethylene insulation; space charge; LDPE nanocomposites; LDPE-MgO nanocomposites; MgO; low-density polyethylene; multilayered dielectric films; nano-fillers; space charge behavior; space charge distributions; temperature 50 degC; voltage 100 kV; Anodes; Cathodes; Conductivity; Electric fields; Polymers; Space charge; Temperature measurement; conduction current; insulating material; low-density polyethylene; multi-layered dielectrics; polymer nanocomposite; space charge;
Conference_Titel :
Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on
Conference_Location :
Potsdam
Print_ISBN :
978-1-4244-7945-0
Electronic_ISBN :
978-1-4244-7943-6
DOI :
10.1109/ICSD.2010.5568093
