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Nano Research & Applications
ISSN 2471-9838
E u r o S c i C o n C o n f e r e n c e o n
Nanotechnology &
Smart Materials
O c t o b e r 0 4 - 0 6 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Nanotechnology & Smart Materials 2018
C
harge accumulation on the surface of epoxy resin affects its insulation
performance under DC voltage. In order to investigate the effect of surface
coating on surface charge accumulation, epoxy resin was coated by nano
SiO2/epoxy composite, and the charge accumulation on the surface was
studied by an electrostatic probe. The surface trap parameters were analysed
by isothermal surface potential decay, and combining with the carrier mobility,
the transport characteristics of surface charge and the control mechanism
of coating were studied. The results suggest that the surface charge mainly
accumulates near the electrodes, the main source of charge was injected from
the electrodes. The surface charges near the anode were mainly caused by
charge trapping, and the surface charges near the cathode were mainly caused
by the adsorption due to the normal electric field. Surface charge accumulation
could be suppressed by increasing the shallow trap density and carrier mobility
on the surface of material, which could be achieved by coating with nano SiO2/
epoxy composite. It was found that, surface charge of epoxy resin could be
suppressed effectively by coating of nano SiO2 particles with content of 3 wt %
Biography
Youping Tu has received her BSc and MSc degrees from the
Department of Electrical Engineering, Chongqing University in
Chongqing, China, respectively in 1988, and in 1991. Currently,
she is a Professor in the Department of Electrical Engineering
at North China Electric Power University in Beijing, China.
From 1991 to 1994, she worked in the Computer Application
field in Hangzhou Heat Power Plant, Zhejiang Province, China.
During 1994, she was a Research Assistant in the Department
of Precision Instrument and Mechanics, Tsinghua University
in Beijing, China. From 1994 to 1995, she worked in Ludao
Company in Beijing, China. She was a Lecturer from 1995 to
2003, and an Associate Professor from 2004 to 2010 in the
Department of Electrical Engineering at North China Electric
Power University in Beijing, China. Her research interest includes
insulation technology, overvoltage and protection for power
system. She is the author of more than 100 technical papers
typ@ncepu.edu.cnThe control mechanism of nano SiO2/epoxy composite coating
on surface charge in epoxy resin
Youping Tu, Sichen Qin, Fuwen Zhou, Xin Ai and Cong Wang
NCEPU, China
Youping Tu et al., Nano Res Appl Volume:4
DOI: 10.21767/2471-9838-C6-025