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What are the “Best” Rheological Properties for Waterborne Paints and Coatings?

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Daniel Saucy Interview

During this edition of the Viscosity Journal, we will talk with Dan about selecting viscosity measurements and instruments for optimum benefit during paint development and how best to use their results to achieve the desired rheological behavior for the paint. read more

The Double Life of Structured Fluids

Neil Cunningham Interview

In this interview Neil Cunningham will be explaining how our choice of measurement methods of everyday structured ...read more

Beyond the Bostwick

Prof. Kathryn McCarthy Interview

Brookfield Engineering Laboratories, Inc., a world leader in viscometers and rheometers, invites you to listen in to ...read more

CUSTOMER CHALLENGE: Viscosity measurement for non-Newtonian solutions

I would like to know if there is a way to give one single viscosity measurement for a non-Newtonian solution (ie. this solution has a viscosity of this) without constraining it a specific shear rate. I was thinking of using the coefficient of thixotrophy (slope of the viscosity-1 verse rate of shear graph) but don't know if there is a better or easier way.

BROOKFIELD ANSWERS: There isn't one "universal" measurement that can be used to describe a particular non-Newtonian material's rheology, to the best of my knowledge. However, ...read more

CUSTOMER CHALLENGE: Fluid Rheology

"How Can I Understand the Rheology of a Fluid?"

BROOKFIELD ANSWERS:

The preferred method used by Brookfield to understand the rheology of a fluid is to perform an up-down speed or shear rate ramp with ...read more

CUSTOMER CHALLENGE: Storage Stability

"How can I evaluate storage stability?"

BROOKFIELD ANSWERS: Storage stability can be evaluated by testing retained samples periodically using an up-down speed or shear rate ramp. The test data provides a "flow ...read more