| Abstract [eng] |
In the field of nanotechnology, polymer nanocomposites became a prominent area of current research and development. The electrical properties of these composites increase interest of scientific community due to potential applications giving a rise to a novel class of electrical engineering materials. Polymer composites filled with conductive carbon fillers could be applied as antistatic, radar wave absorbing materials, electromagnetic coatings and as electronic circuit elements. Carbon nanoparticles are among the most utilized nanomaterials due to their thermal, mechanical and electrical properties. At the same time, using nano-sized carbon materials raise a lot of challenges and effective solutions are needed. Broadband dielectric measurements can provide valuable information for inherent physical effects as well as describing overall electrical response. The aim of the dissertation is to investigate size and synergy effects of composites filled with nanocarbon inclusions on dielectric and electrical properties in wide frequency (20 Hz – 1 THz) and temperature (30 K – 300 K) range. In this work composites with different types of carbon particles – carbon nanotubes, onion like carbon, graphite, graphene and were investigated in wide frequency and temperature range. |
