الفهرس 
Electrical Properties of Polymer Composite
EXPERMAINTAL SETUP & TECHNIQUEOnly 14 pages are availabe for public view
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Abstract
The rubber and epoxy are polymeric materials widely-used
as insulating materials for many reasons such as; economy,
strength and ease fabrication to good tolerance. As a result of the
development which has taken place recently; these materials can
be produced with various designs and shapes for outdoor
applications with suitable electrical and mechanical properties
according to their intended purpose.
Composite material has electrical properties such as
dielectric strength and electric resistivity which are measured by
different tests and compared with different composite materials
according to the added filler. The (Micro - Nano - hybrid) filler is
inserted in manufacturing the composite material to improve its
electrical and mechanical properties.
Epoxy composites are one of the polymeric composite
insulators which are used in outdoor insulation. In order to study
the electrical behavior of epoxy composites as outdoor
applications insulators for overhead transmission lines at different
conditions, inorganic fillers such as titanium dioxide and silica
with different sizes are inserted into the epoxy to modify its
electrical and physical properties in addition to maximize surface
flashover voltage and decrease tracking phenomena at dry and
contaminated weather conditions. Surface flashover voltage for
composite insulators is calculated using neural-network based on
mathematical model at any weather condition.
The objective of this research is to study electrical
properties of epoxy composites for overhead transmission lines
under contaminated weather conditions. The composites include
inorganic filler of different types, sizes and concentrations. It is
used as insulators. This is aimed at selecting the suitable polymer
composite insulator which achieves the maximum surface
flashover voltage.
Finally the main salient points of the chosen polymeric
insulator for this work have been summarized and presented.