Dolgu Maddesi Eklenmesiyle İletken Polimer Kompozitlerinin Hazırlanması

Within the scope of the project, conductive polymer composites with uniform filler distribution were produced by mixing thermoplastic polymers and carbon-based conductive fillers in molten form. Electrical, mechanical, thermal and morphological characterization of the produced composites were carried out. In the project experiments, conductive polymer composites of different compositions were prepared by mixing high-density polyethylene (HDPE), Nylon 6, Polypropylene (PP), Poly(ethylene thermthalate) (PET) polymer matrices, carbon black and multi-walled carbon nanotube particles in a twin-screw extruder. Test specimens were prepared using pressure and injection molding devices. The electrical properties of the samples were determined using two- and four-point probe conductivity measurement methods. During the mechanical characterization processes, tensile and impact strength tests were applied to the composites. Thermal properties were examined using DSC (diffrential scanning calorimetry) device. Morphological features were examined by SEM (scanning electron microscope). The electrical conductivity of insulating thermoplastic polymers has been reduced to the semiconductor level. The lowest critical concentration value (0.25% carbon nanotube by weight) was obtained in the PET-carbon nanotube composite system. The mechanical properties of composites have changed with the addition of fillers. The best improvement in mechanical properties was observed in PP-based composites. In general, as the amount of filler in the composites increased, the percentage of crystallization decreased.