Rheological Measurements with the Rotational Viscometer

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Abstract
The rotating cylinder viscometer in various forms has found wide use for the measure ment of viscosity and the study of so-called anomalous flow. Starch pastes, pigment disper sions, printing pastes, and coatings are examples of materials used in the textile industry which exhibit complex flow properties. Identification of the different kinds of flow and measurement in terms of valid physical units are necessary before the properties of these materials can be correctly described. It can be expected that with adequate specification of flow properties more effective control in mill processes will become possible. This article is concerned with essential features of instrumentation, definition, and computation.

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