An evaluation of a squeeze flow rheometer for the rheological characterization of a filled polymer with a yield stress

2002 ◽  
Vol 41 (3) ◽  
pp. 245-256 ◽  
Author(s):  
Tung W. Chan ◽  
Donald G. Baird
Keyword(s):  
Yield Stress ◽  
Squeeze Flow ◽  
Rheological Characterization ◽  
Filled Polymer

Rheological characterization of commercial glass mat thermoplastics (GMTs) by squeeze flow testing

1999 ◽  
Vol 20 (1) ◽  
pp. 114-123 ◽  
Author(s):  
G. Kotsikos ◽  
J. H. Bland ◽  
A. G. Gibson
Keyword(s):  
Squeeze Flow ◽  
Rheological Characterization ◽  
Commercial Glass ◽  
Glass Mat

Physicochemical and Electro-Rheological Characterization of Kaolinite / CMS / Silicone Oil Fluid

2010 ◽  
Vol 446 ◽  
pp. 33-41
Author(s):  
Thomas Reiss ◽  
Saoussen Laribi ◽  
Jean-Marie Fleureau ◽  
Jean Francois Tassin
Keyword(s):  
Electric Field ◽  
Yield Stress ◽  
Applied Electric Field ◽  
Silicone Oil ◽  
Rheological Behaviour ◽  
Rheological Characterization ◽  
Clay Particles ◽  
Observed Behaviour ◽  
Composite Nature

The aim of this study is to elaborate electro-rheological fluids based on kaolinite. the scientific characterization made it possible the identification of the composite nature and the checking of the intercalation of the polymer among the clay particles The rheological behaviour of the fluid depends on the electric field. A yield stress of the suspensions is observed, which increases with the applied electric field. An interpretation based on the different modes of association between the clay particles is proposed to account qualitatively for the observed behaviour.

scholarly journals Study of the influential factors on the rheological behavior of adhesive mortar available in the market

2013 ◽  
Vol 6 (3) ◽  
pp. 399-413 ◽  
Author(s):  
M. R. M. M. Costa ◽  
E. Pereira ◽  
R. G. Pileggi ◽  
M. A. Cincotto
Keyword(s):  
Particle Size ◽  
Rheological Behavior ◽  
Compressive Load ◽  
Particle Morphology ◽  
Influential Factors ◽  
Synergistic Action ◽  
Squeeze Flow ◽  
Rheological Characterization ◽  
Fresh State

Rheology studies the deformation and flow of matter and seeks to describe the deformations of material depending on the time they are exposed to mechanical actions. This paper proposes to understand the behavior of fresh mortar adhesives in Squeeze Flow tests based on rheological characterization of different commercial compositions. In the tests, flow of material results from the application of a compressive load on the sample in the fresh state which causes displacement due to stresses generated during radial shear flow. We performed further physical characterizations of mortars and viscosity on material passing the through a sieve with a 0.075 mm sieve opening with the objective of basing the analysis of the results obtained from Squeeze Flow tests. It was observed that the mortars studied showed differences in rheological behavior, probably resulting from synergistic action of some of the composition parameters, especially the particle size distribution and particle morphology.

Rheological characterization of asphalt in a temperature-gradient combinatorial squeeze-flow setup

2007 ◽  
Vol 46 (8) ◽  
pp. 1075-1082 ◽  
Author(s):  
Yatin P. Patil ◽  
Antonio Senador ◽  
Patrick T. Mather ◽  
Montgomery T. Shaw
Keyword(s):  
Temperature Gradient ◽  
Squeeze Flow ◽  
Rheological Characterization

scholarly journals Rheological and the Fresh State Properties of Alkali-Activated Mortars by Blast Furnace Slag

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2069
Author(s):  
Markssuel Teixeira Marvila ◽  
Afonso Rangel Garcez de Azevedo ◽  
Paulo Ricardo de Matos ◽  
Sérgio Neves Monteiro ◽  
Carlos Maurício Fontes Vieira
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Water Retention ◽  
Mass Density ◽  
Sodium Content ◽  
Squeeze Flow ◽  
Rheological Characterization ◽  
Hardened State ◽  
Furnace Slag

The fresh and rheological properties of alkali mortars activated by blast furnace slag (BFS) were investigated. Consistency tests, squeeze flow, dropping ball, mass density in the hardened state, incorporated air, and water retention were performed. Mortars were produced with the ratio 1:2:0.45 (binder:sand:water), using not only ordinary Portland cement for control but also BFS, varying the sodium content of the activated alkali mortars from 2.5 to 15%. The results obtained permitted understanding that mortars containing 2.5 to 7.5% sodium present a rheological behavior similar to cementitious mortars by the Bingham model. In turn, the activated alkali mortars containing 10 to 15% sodium showed a very significant change in the properties of dynamic viscosity, which is associated with a change in the type of model, starting to behave similar to the Herschel–Bulkley model. Evaluating the properties of incorporated air and water retention, it appears that mortars containing 12.5% and 15% sodium do not have compatible properties, which is related to the occupation of sodium ions in the interstices of the material. Thus, it is concluded that the techniques used were consistent in the rheological characterization of activated alkali mortars.

scholarly journals Rheological Characterization of Yield-Stress Fluids with Brookfield Viscometer

2021 ◽  
Vol 31 (1) ◽  
pp. 1-9
Author(s):  
Andrei Potanin ◽  
Greggory Marron
Keyword(s):  
Yield Stress ◽  
Accurate Data ◽  
Viscosity Method ◽  
Rheological Characterization ◽  
Simple Method ◽  
Yield Stress Fluids ◽  
Apparent Shear Rate ◽  
Selection Of ◽  
Good Agreement

Abstract This paper analyzes various techniques to use viscometers equipped with vane spindles to characterize rheological properties of yield stress fluids. Specifically, application of Brookfield viscometers to this end is discussed. A wide selection of toothpastes and lotions were tested. It is shown that a simple method based on apparent shear rate and stress, commonly referred to as a representative viscosity method, works well for moderately non-Newtonian samples but may significantly underestimate viscosity for samples with a more pronounced yield stress behavior. To get more accurate data an integral equation relating torque to angular velocity needs to be solved which can be easily done numerically to get a good agreement between the data collected on an inexpensive viscometer and the data from high-end rheometers.

Rheological characterization of yield stress gels formed via electrostatic heteroaggregation of metal oxide nanoparticles

Soft Matter ◽  
2017 ◽  
Vol 13 (38) ◽  
pp. 6743-6755 ◽  
Author(s):  
Javen S. Weston ◽  
Jeffrey H. Harwell ◽  
Brian P. Grady
Keyword(s):  
Metal Oxide ◽  
Rheological Properties ◽  
Yield Stress ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Rheological Characterization ◽  
Oppositely Charged

Yield stress gels are formed when oppositely charged fumed nanoparticle species are dispersed in water. The gels are stable against sedimentation, have tunable rheological properties, and exhibit very little thixotropy.

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