Vliv nanotrubiček na vybrané fyzikální vlastnosti gumárenských směsí

Abstract

The diploma thesis deals with nanotechnologies, carbon allotropy, characterizes polymers and rubber compounds. Within carbon allotropies, the thesis is focused on the characterization of the properties of carbon nanotubes, their structure, preparation and use. Furthermore, the composition of rubber compounds is discussed, especially individual components used in rubber compounds, including natural and synthetic rubber. The experimental part of the thesis describes the composition of the investigated mixture and the method of preparation of said mixture. Next, the behavior of the rubber compound with carbon fillers during the process of mixing and dispersing the carbon fillers is studied. Within the theory of the experiment, alternating and direct electrical conductivity are characterized. The measured data of thermal properties and alternating electrical conductivity for single-walled carbon nanotubes and direct electrical conductivity for multi-walled carbon nanotubes are also described. In order to evaluate the homogeneity, the electrical properties were examined in two places of the sample.