TESTING AND MEASURING Viscosity Measurement of filled Rubber Compounds - New insight for Error free Measurements

Cone/cone, closed boundary torsional rheometer (RPA) appears to be a highly interesting alternative to measure stea dy shear viscosity. Usually, this rheome ter type is designed to measure only dy namic viscosity. The ability to program a steady rotation, programmed in strain and time, provides a unique way to measure in steady shear mode.

Steady shear viscosity is one of the key properties to be measured for under standing uncured rubber compound pro cess. It is essential for predicting output and pressure in extrusion as well as in jection time and length in injection mol ding for of these commonly used proces sing techniques.