The rheological behaviour in the molten state of Acrylo nitril– Butadine –
Styrene (ABS) according to temperature, shearing stress and shearing rate
have been studied. Measurements were made with a capillary viscosimeter for
the static properties.
The correction of experimental data has been carried out.
Viscosity decreases with increasing shear stress or shear rate in the nonnewtonian
flow high polymer systems. However, the variation of activation
energy with temperature at fixed shear rate is always less then at fixed shear
stress.
