Abstract: Dielectric property of materials is one of the most fundamental
characters. In recent years, there is an increasing interest in the dielectric
properties of composite, which consists of matrix and inclusion materials. The
volume ratios, component geometry, distribution types of inclusion determine
the performance of composite. In this paper, in order to take the factors
mentioned above into account, a cubical model and an ellipsoidal inclusion
model which contain variables are selected. This article firstly uses a complex
method to discretize the models, and then optimize the discretizition process.
After getting the capacitance of every part with basic formula and integral, an
electric network is put forward to substitute the original model. It is used to
investigate the dielectric property. The relationships between static effective
permittivity and the volume ratio, the shape of the inclusion are analyzed. The
results obtained by the proposed method are compared with the results got by
Maxwell Garnett, logarithmic, Bruggeman and experiment data. The comparison
results show the proposed approach has great advantages and different model has
specific scope.
Keywords: Electric network, dielectric property, composite
