Effects of nano-sized MgO-filler on electrical phenomena under DC voltage application in LDPE

Author

Murata, Y. ; Murakami, Yasutaka ; Nemoto, M. ; Sekiguchi, Yuta ; Inoue, Y. ; Kanaoka, M. ; Hozumi, N. ; Nagao, M.

Author_Institution

J-Power Syst. Corp., Japan

fYear

2005

fDate

16-19 Oct. 2005

Firstpage

158

Lastpage

161

Abstract

A nanocomposite material, composed of nano-sized MgO-filler added to a low-density polyethylene (LDPE), was subjected to electrical property investigations under DC voltage application. The volume resistivity of LDPE, under 40-80 kV/mm DC field at 90 °C, increases by the power of 10 due to the addition of only a few percent of nano-filler. The amount of space charge in LDPE under high electric field is reduced and the ratio of stress enhancement by space charge becomes less due to the addition of nano-sized MgO-filler. The DC breakdown strength of LDPE is increased by adding nano-sized MgO-filler. Based on these results, the mechanism where by the nano-sized MgO filler had improved DC characteristics of LDPE was discussed.

Keywords

electric breakdown; electric fields; electrical resistivity; magnesium compounds; nanostructured materials; polymers; space charge; 90 C; DC breakdown strength; DC characteristics; DC voltage application; LDPE; MgO; electric field; electrical phenomena; electrical property; low-density polyethylene; nanocomposite material; nanosized MgO-filler; space charge; stress enhancement; Conductivity; Current measurement; Electric breakdown; Electrodes; Fasteners; Nanostructured materials; Polyethylene; Sheet materials; Space charge; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2005. CEIDP '05. 2005 Annual Report Conference on

Print_ISBN

0-7803-9257-4

Type

conf

DOI

10.1109/CEIDP.2005.1560645

Filename

1560645