Title :
DC conduction properties of SiO2/LDPE nanocomposite
Author :
Yang Jia-ming ; Wang Xuan ; Zheng Chang-ji ; Zhao Hong ; Lei Qing-quan
Author_Institution :
Key Lab. of Eng. Dielectr. & Its Applic., Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
The DC conduction characteristics of Silica (SiO2)/low density polyethylene(LDPE) nanocomposite was investigated at electric fields of 3 to 30kV/mm and at temperatures of 20 to 70°C. By the addition of nano-sized SiO2 filler, the conductivity was decreased at least in an order of magnitude in the whole range of temperatures. SiO2/LDPE shows much lower thermal activation energy than LDPE. The current voltage (I-V) characteristic shows that SiO2/LDPE has a higher Space-charge-limited-current threshold than LDPE, which indicated the suppression of space charge injection. The interfacial electric charge region was suggested to be the reason for the improvement of electrical properties in Nanocomposite.
Keywords :
charge injection; electric properties; nanocomposites; polyethylene insulation; silicon compounds; DC conduction properties; I-V characteristic; LDPE nanocomposite; SiO2; current voltage characteristic; electrical properties; higher space-charge-limited-current; interfacial electric charge region; low density polyethylene nanocomposite; nanosized filler; temperature 20 degC to 70 degC; thermal activation energy; Cable insulation; Electron traps; Films; Handheld computers; Manganese; Thermal conductivity; Zinc oxide; I–V characteristics; SiO2; nanometric dielectrics; space charge;
Conference_Titel :
Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the
Conference_Location :
Bangalore
Print_ISBN :
978-1-4673-2852-4
DOI :
10.1109/ICPADM.2012.6318950
