Apparatus for measuring the representative parameters of rheolog

Details Apparatus for measuring the representative parameters of rheolog Apparatus for measuring the representative parameters of rheolog

1980-01-14

1982-02-23

Goldberg, Gerald

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

G01N 1108

Patent

active

043163831

ABSTRACT:
Apparatus for determining rheological parameters of viscoelastic fluids is provided. The apparatus comprises two similar cylinder-piston assemblies ending at identical flow orifices. The pistons are pushed conjointly by a motor at an adjusted speed. A differential manometer is arranged between the cylinders immediately upstream of the orifices. One of the cylinders contains fluid to be studied and the other a Newtonian comparison fluid. The strain rates of the fluids are defined by the adjusted flow rates, and the pressure differential expresses elongation stress of the viscoelastic fluid. This apparatus is applicable in the rheological study of dilute solutions of macromolecular compositions.

REFERENCES:
patent: 1529811 (1925-03-01), Priest
patent: 3766773 (1973-10-01), Limpert
patent: 3908442 (1975-09-01), Chmiel

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