Dielectric, rheological and calorimetric studies of silicones used in power modules

This work deals with the characterization of the dielectric, rheological and calorimetric properties of different silicone formulations used in power device products such as power modules and inverters. The first part reports the dynamic and kinetic study of the crosslinking process. Important discrepancies are observed between the different compounds that enables a preselection of some polymers. Rheological and dielectric experiments performed on crosslinked samples aUow the final choice according to the desired application (encapsulafion of electronic circuits in power modules).