1.1 These test methods cover the use of rotational viscometers to determine the dependence of apparent viscosity of paints, inks, and related liquid materials on temperature. The first test method uses a standard rotational viscometer with concentric cylinder geometry running at a fixed rotational speed as the temperature is increased or decreased. The second test method uses a rotational viscometer with cone and plate geometry running at a fixed rotational speed as the temperature is increased or decreased. The third test method uses concentric cylinder or cone/plate geometry operated with a shear rate ramp at several discrete temperatures. 1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Viscosities of paints and related materials usually are highly dependent on temperature, but no method for establishing specific relationships is available. Expected users would be paint and ink formulators, quality control personnel, and problem solvers.
Keywordsviscosity; rotational viscosity; viscosity as a function of temperature; coaxial cylinder viscometer; cone/plate viscometer
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Ballot Item Approved as D7867-2013 and Pending Publication