Vliv stárnutí na mechanické vlastnosti polyuretanu

Abstract

This bachelor thesis mentions general description of polymeric materials, their distribution and production. The next part of the thesis is focused on description of polyurethanes, their distribution, production, use in industry and briefly described their chemical, mechanical and physical properties. This topic is followed by description of several types of degradation in polymeric materials. The following chapter contains description of experimental methods and description of the instruments used to measure the impact of aging on the mechanical properties of polyurethanes. Experimental part is focused on description of samples, aging conditions under which the experiment was performed and subsequent measurement of mechanical properties aged samples of polyurethanes on the instrument DMA Q800. The overall summary of the experiment and results are described in the conclusion of this thesis.