Reinforcement of composite materials based on polytetrafluoreethylen.

The paper examines the effect of nanoscale fillers of modifiers of various chemical nature, which are part of a polymer composite material (PCM), on the characteristics of physical and mechanical properties. Carbon nanotubes, carbon black, a product of processing of hydrocarbon raw materials and silicon dioxide were presented as the considered nanoscale fillers. The method of synthesis and testing of composite materials based on polytetrafluoroethylene is presented. According to the results of the study, the influence of nanoscale mono-fillers-modifiers on the physical and mechanical characteristics of antifriction nanocomposites based on polytetrafluoroethylene (PTFE) was determined. The analysis of the test results was carried out and the components of a complex filler for creating a tribotechnical antifriction PCM with high physical and mechanical characteristics were determined. The influence of the concentration of carbon nanotubes in a polymer matrix on the reduction of the characteristics of the physical and mechanical properties of PTFE-based PCM is considered. Micrographs of the PCM structure with inhomogeneities and unstructured sections of the polymer matrix, as well as CNT (carbon nanotube) agglomeration sites, are shown. It is established that complex nanoscale fillers-modifiers with different chemical nature have a significant effect on the characteristics of the physical and mechanical properties of a polymer nanocomposite based on PTFE. A decrease in the relative elongation of the developed PCM with a complex filler modifier based on Aerosil R–106 and carbon black of the N-220 brand was noted, compared with the PCM with mono modifiers. [ABSTRACT FROM AUTHOR]