Standard Test Method for Rheological Properties of Paste Printing and Vehicles by the Falling-Rod Viscometer

Importancia y uso:

5.1 Apparent viscosity at the relatively high shear rate of 2500 s⁻¹ does not completely define the rheological properties of printing inks but is useful in the practical control of ink viscosity during production and the specification acceptance between supplier and purchaser.

5.2 The slope of the power law plot is the preferred measure of non-Newtonianism. The yield value, which is obtained by extrapolation of high-shear measurements to a shear rate approaching zero, does not conform to the definition of the true yield stress (see 3.1.7). The yield value and other low shear parameters are also subject to a high degree of variability (see the precision table in Section 16).

Subcomité:

D01.56

Referida por:

D5165-12R20, D6336-11R21, D7394-18R23, D7188-05R19

Volúmen:

06.02

Número ICS:

87.080 (Inks. Printing inks)

Palabras clave:

apparent viscosity; falling-rod viscometers ; inks; non-Newtonianism; power law viscosity; printing inks; shortness; vehicles; viscometers; viscosity; yield value;