TESTING AND MEASURING Online Rheometer - Increased Selectivity through continuous Measurement of the extensional Viscosity

Online control of product quality with regard to the rheological material properties is becoming increasingly important. In particular, the elastic material properties of the melt, such as the elongation viscosity, enable a significantly better batch differentiation than the melt index value or the shear viscosity.

Online monitoring of the rheological properties in polymerisation and pilot plants is essential for fast and effective process control. In addition to the pure polymer production, tailored compounding to specific material properties is be coming increasingly important.