Many ceramic products are made by extruding materials which are not extrudable in their original state and must be made so by appropriate treatment and by incorporating various additives which adjust their rheology or flow properties. The properties that are of importance for extrusion can, in fact, be characterized and quantified by means of rheological measurements. Capillary rheometry especially enables many different extrudability tests to be carried out, ranging from simple suitability tests to complex determinations of properties in order to achieve optimum processes and products.
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Gleissle, W., Graczyk, J. (2009). Rheology and Extrudability of Ceramic Compounds. In: Händle, F. (eds) Extrusion in Ceramics. Engineering Materials and Processes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-27102-4_8
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