Měření tokových křivek plastických maziv

Abstract

The bachelor thesis focuses on measurement flow curves of plastic greases. The introduction lists rheological properties of plastic greases. Then rheometers are presented for measuring of flow curves, especially, the principle of measuring using a programmable rotational rheometer Brookfield that is used for measuring. In the next chapter rheological models for non-newtonian fluids are described and then these models are used for approximation the measured flow curves. In the next section of bachelor thesis shows procedure of measuring of flow curves of the plastic grease. Then results of measuring flow curves are interpreted with reference to thixotropy. The flow curves of plastic fluids are approximated using an appropriate rheological model.