Knowledge – Rheology

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.

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