Standard Test Method for Viscoelastic Properties of Paste Ink Vehicle Using an Oscillatory Rheometer
5.1 This test method has found acceptance in the lithographic ink industry in predicting rheological behavior of a vehicle under press conditions caused by extrusion, shear-thinning rollers and dot gain recovery.
5.2 This test method is restricted within the torque limitations and strain resolution of the rheometer used.
5.3 Results may not be reproducible if the vehicle is not homogenous.
1.1 This test method covers the procedure for determining the viscoelastic properties of printing ink vehicles by measuring the G', G”, and tan delta using a controlled strain cone and plate oscillatory rheometer.
1.2 This test method provides the flexibility of using several different types of rheometers to determine viscoelastic properties in ink vehicles.
1.3 This test method is not intended for systems that are volatile at procedure temperatures as evaporation may occur effectively changing the percent solids before testing is finished and significantly altering the rheology.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.
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