Abstract
In this work materials have been used in the form of conducting polymer composite film for covering of different electrical and electronic equipment to provide effective electromagnetic interference (EMI) shielding. Pre localized CNF (CNF) powder will be mixed with Poly (vinylidene fluoride) (PVDF) and Ionic Liquid (IL) using solvent blending method to form a series of PVDF/CNF/IL composite films with different concentration of CNF and IL. Obtained composite films were characterized with Scanning Electron Microscopy (SEM) and Differential scanning calorimetry (DSC) for surface morphology and thermal analysis. Fabricated films were also examined for their mechanical properties. The dielectric properties of the film were measured with the help of impedance analyser. After this using dielectric properties of the films shielding effectiveness are calculated in the range of 100 KHz to 10 MHz. The fabricated film with composition of 60/10/30 exhibits the shielding effectiveness of 32 dB to 40 dB in entire frequency range and also has the elongation of 31%. The key advantage of obtained composite films is there light weight and flexibility can be used to shield small electronic equipment.
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