Knowledge Base - Rheology
On this page we offer information about polymer and elastomer rheological topics.
Polymer
MFR / MVR
Melt Flow Rate
The melt index (melt flow rate) is an important measure of how easily the melt of a thermoplastic polymer flows through a capillary. It is used for quality control and as a simple estimate of the flow behaviour in production.
IV
Intrinsic viscosity
With the method described, the intrinsic viscosity (IV) is determined via correlation, without chemical solvents.
Rg
Knowledge – Rheology – Corrections with the Rheometer
Corrections to get true Shear Rate and Shear Stress.
Moisture
Knowledge – Rheology – MFI – Moisture
Influence of Moisture content for PET in Melt Index Testing
Elastomer
LAOS
Knowledge – Rheology – Large Amplitude Oscillatory Shear
Large Amplitude Oscillatory Shear. Expanded ability to characterize polymers and polymer mixtures with FFT delivers high selectivity.
Related Products
MFI
GÖTTFERT – Melt Flow Indexers
Melt flow indexers mi2, MI-3, mi40 and Mi-Robo from GÖTTFERT are meeting the highest customer expectations.
Online Rheo
GÖTTFERT – Online Rheometer
Online-Rheometers from GÖTTFERT for realtime process information on the rheological and molecular structure of polymers.
X-trude
GÖTTFERT – Laboratory Extruders
Laboratory Extruders from GÖTTFERT- an open Platform for rheological Online Analysis.