Читать книгу The Rheology Handbook - Thomas Mezger - Страница 86

Usually with highly filled suspensions during a process at increasing shear rates, the particles may more and more come into contact to one another, and particularly softer and gel-like particles may become more or less compressed. In this case, flow resistance will be increased. Here, the particle shape plays a crucial role. Due to the shear gradient which occurs in each flowing liquid, the particles are rotating as they move into shear direction [3.10] [3.20] [3.83]. Even rod-like particles and fibers are showing now and then rotational motion (photographic images e. g. in [3.14].