Читать книгу The Rheology Handbook - Thomas Mezger - Страница 34

In the beginning, fluid F1 is flowing faster than fluid F2. With decreasing fluid level, F1 shows reduced flow velocity. F2, however, continues to flow with a hardly visible change in velocity. Therefore finally, F2 empties its tube before F1 does. F1, a wallpaper paste, is an aqueous methylcellulose solution, and F2 is a mineral oil. Flow behavior of polymer solutions such as the wall paper paste is explained in Chapter 3.3.2.1: shear-thinning flow behavior.