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Measurement of Temporary and Permanent Shear with the Instron Capillary Rheometer
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1977 by SAE International in United States
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The Instron Capillary Rheometer, with special extremely fine capillaries, has been used to measure the apparent viscosities of non-Newtonian polymer-thickened multigrade oils at temperatures from 100°F to 320°F and shear rates to 106 sec-1. The same apparatus can produce permanent shear under extreme conditions. Temporary shear data at 100°, 150°, 210°, 280° and 320°F are reported for eight commercial oils and five experimental oils formulated with different VI improvers in the same base oil. Permanent shear data are given for a larger set of oils.
CitationJohnson, T. and O'Shaughnessy, M., "Measurement of Temporary and Permanent Shear with the Instron Capillary Rheometer," SAE Technical Paper 770377, 1977, https://doi.org/10.4271/770377.
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