Rosand

Rosand Capillary rheometers for process-relevant material testing.

“Rosand capillary rheometers characterize the rheology of materials by extrusion under high pressures, shear rates and a range of temperatures, conditions which are directly relevant to processing. Applicable to materials from polymer melts to ceramics, and from foodstuffs to inks and coatings, a Rosand capillary rheometer enables optimization of process conditions and material properties for critical product functionality.”

 

Rhea software1     600x400_rosand_RH10_1_265x167

There are two models in the Rosand range to suite budget and pressure needs. The  bench top RH2000 shown above left runs to 20kN and comes in single bore or dual bore capillaries for QC testing.  Then the floor standing RH7 goes up to 50kN pressure while the RH10 extends the working range to 100kN for high force testing.

The Rosand systems enables controlled extrusion (by volumetric flow) of a sample through a high precision die of known dimensions, to characterize material flow properties typically under conditions of high force (or pressure) and/or high shear rate. Using the twin bore barrel option and a ‘zero length’ die configuration allows simultaneous determination of shear viscosity and extensional (elongational) viscosity as a function of shear (or deformation) rate.

 
Products Technology
RH2000 web page Viscosity and Polymer processing
RH7/RH10 web page Co-Extrusion processes paper