Physical properties analysis of nano-filled microcomposite epoxy materials

The physical properties of the insulating materials are sensitive to the constraints that they undergo. Indeed, the process of manufacturing is the first to act on these properties. Then, follow the constraints undergone by the material, which appear with the nominal conditions of use or in accelerated ones. Therefore, these properties are features of the performances of these materials. Thus, it is essential to study them, especially when new materials are introduced, as it is the case for epoxy microcomposites charged with nanoparticles. In this work, we propose to study and to correlate the physico-chemical and electric properties of these materials after their manufacture and following the application of electric and thermal combined constraints. The survey of the properties of these nanostructured microcomposite materials is especially important since the contemplated applications of nanodielectrics in the domain of the electrical engineering are in full expansion. The survey shall imply the use of several experimental techniques. These will consist of the Differential Scanning Calorimetry (DSC), the infrared spectroscopy (FT-IR), the dielectric spectroscopy, the Thermal Step Method (TSM) and the measurement of the conduction current I=f(V). High-resolution 13C NMR shall be used to investigate how nano-fillers would interact with polymer matrices for basic understanding of characteristics that derive from such nanostructures. This work will allow putting in evidence the importance of the manufacturing of nanostructured materials and the behaviour of these materials when they are submitted to strong combined constraints.