Abstract
It is difficult to characterize the rheological behavior of structured fluids including suspensions, dispersions and gels or systems involving solvents by removing them from the confines of processing equipment. A new slit rheometer with a continuously adjustable gap is developed to characterize the shear viscosity material function of such fluids as a function of deformation rate and temperature. The gap of the rheometer is variable to give the user the ability to vary the gap and the length/gap ratio and hence the wall shear rate. Series of pressure transducers, flush with the wall, are used to determine the pressure drop over the fully developed flow region and hence the wall shear stress. The rheometer is fed from a starved extruder or a gear pump with constant flow rate. Here the rheometer is described and typical results which compare data collected with the in-line adjustable-gap rheometer versus data from off-line techniques are presented, along with data which demonstrate the practicality of the rheometer.
Original language | English |
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Pages | 2283-2288 |
Number of pages | 6 |
State | Published - 1997 |
Event | Proceedings of the 1997 55th Annual Technical Conference, ANTEC. Part 3 (of 3) - Toronto, Can Duration: 27 Apr 1997 → 2 May 1997 |
Conference
Conference | Proceedings of the 1997 55th Annual Technical Conference, ANTEC. Part 3 (of 3) |
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City | Toronto, Can |
Period | 27/04/97 → 2/05/97 |