Rheometer takes the stress out of flow testing
A
Magna Projects and Instruments product story
Edited by the Engineeringtalk editorial team
Jan 13, 2003
The Eta 2100 capillary extrusion rheometer is a powerful floor-standing instrument designed to measure the flow of materials such as molten plastics, doughs, pastes, rubbers and foods.
The Eta 2100 capillary extrusion rheometer is a powerful floor-standing instrument designed to measure the flow of materials such as molten plastics, doughs, pastes, rubbers, foods, cosmetics, pharmaceuticals etc, under the duress of conditions likely to be found in processing.
Models within the range are capable of reaching material pressures as high as 2100bar at temperatures up to 450C.
As the viscosity of most materials is not constant but changes with the speed of processing, the Eta 2100 uses a state-of-the-art servo drive system to control the speed of extrusion over a very wide range.
The whole system is computer controlled by Magna's RheoTenax software suite, which has been especially written to be user friendly and provide a wide range of manual and automatic control options, and an advanced analysis and presentation package.
The instrument - a very highly instrumented and controlled piston-driven extrusion machine - is useful for formulation development, materials research, troubleshooting, quality control, generation of data for mould or die design software.
The extruded product may be tested using other techniques in order to link processing behaviour with, for example, mechanical properties.
Accessories are available to measure swelling after extrusion (die swell), viscous heating, effect of hydrostatic pressure on viscosity etc.
The Eta 2100 is complemented by Magna's benchtop MiniCER capillary rheometers, for applications which do not require the high pressures etc of the Eta 2100.
Magna's products are designed on a modular basis so that modifications to suit specific applications may be made easily and cost-effectively.
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