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ASTM D2196-20

Current Revision

Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer

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1.1 These test methods cover the determination of the apparent viscosity and the shear thinning and thixotropic properties of non-Newtonian materials in the shear rate range from 0.1 s−1 to 50 s−1 using a rotational viscometer operating in a fluid contained in a 600 mL low form Griffin beaker.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


3.1 Test Method A is used for determining the apparent viscosity at a given rotational speed, although viscosities at two or more speeds give better characterization of a non-Newtonian material than does a single viscosity measurement.

3.2 With Test Methods B and C, the extent of shear thinning is indicated by the drop in viscosity with increasing rotational speed. The degree of thixotropy is indicated by comparison of viscosities at increasing and decreasing rotational speeds (Test Method B), viscosity recovery (Test Method B), or viscosities before and after high shear (combination of Test Methods B and C). The high-shear treatment in Test Method C approximates shearing during paint application. The viscosity behavior measured after high shear is indicative of the characteristics of the paint soon after application.

SDO ASTM: ASTM International
Document Number D2196
Publication Date Dec. 1, 2020
Language en - English
Page Count 5
Revision Level 20
Supercedes
Committee D01.24
Publish Date Document Id Type View
Dec. 1, 2020 D2196-20 Revision
June 1, 2018 D2196-18E01 Revision
June 1, 2018 D2196-18 Revision
Feb. 15, 2015 D2196-15 Revision
July 1, 2010 D2196-10 Revision
July 1, 2005 D2196-05 Revision
April 10, 1999 D2196-99 Revision