Gagolkina Z. Peculiarities of formation, structure and properties of the systems based on cross-linked polyurethanes and in situ introduced carbon nanotubes and transition metals complexes

The object of the research was the development of new functional materials based on polyurethane and nanofillers. The aim of this work was establishing of forming regularity of the systems based on the polyurethanes filled with carbon nanotubes and modified with metal complexes; investigation of the effect of nanotubes and complexes of metals on the structure and properties of composites. The main results obtained by the methods of IR- and electron spectroscopy, electron paramagnetic resonance, X-ray analysis, optical microscopy, scanning electron microscopy, dielectric relaxation spectroscopy, dynamic calorimeter, differential scan calorimetry, echo-impulse method, thermo gravimetric analysis. It was shown that the introduction of the nanotubes to the polyurethane matrix in the presence of catalytically active metals complexes has an impact on a stabilization of the nanotubes in the polymer bulk. The percolation threshold for the composites was observed at low filler content resulted in drastical increase of electrical conductivity and tensile strength of the systems. It was shown that the materials with the required levels of electrical conductivity, thermal conductivity, mechanical strength and other characteristics can be obtained by controlling the quantity the filler and adding of metal complexes. Such materials can be used to as antielectrostatic coatings, conductive adhesives, elastic heat-conducting materials, etc.