The Cambridge MultiPass Rheometer (MPR)
Strata is proud to announce the addition of the Cambridge Multi Pass Rheometer (MPR) to its range of products.
The MPR is a novel dual piston capillary rheometer that can be used to investigate the rheological behaviour of melts, liquids and soft solids. It consists of two servo hydraulically controlled pistons enclosed within temperature controlled barrels and a central test section. The pistons can be moved back and forth to drive the material contained within the MPR through the test section (see the schmatic diagram to the right). The speed of the pistons can be varied from 0.05mm.s-1 to 200mm.s-1, allowing very high shear rates to be generated.
A variety of test sections can be used with the MPR from simple capillaries for determining the rheological parameters of the material under test to zig-zag channels used in conjunction with quartz windows to allow flow visualisation studies to be carried out. Any type of channel can be made for the MPR within the limits of manufacturing engineering. An optical module is available that allows the flow of the material within the test section to be observed at the same time as making rheological measurements. This module has been extensively used to carry out flow birefringence studies of polymer melts.
For more information please click here.