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Rheology Studies on Highly Filled Nano-zirconia Suspensions by C. Renger; P. Kuschel; A. Kristoffersson; B. Clauss; W. Oppermann; W. Sigmund is a Materials Science article available to read on EtoBox.

What is Rheology Studies on Highly Filled Nano-zirconia Suspensions about?

The rheological properties of highly filled nano-zirconia suspensions in water and in various water-1,2-propanediol mixtures were investigated. The influence of an electrosteric (polyacrylic acid), an electrostatic (triammonium citrate) and a steric dispersant (2-(2-(2 methoxy ethoxy) ethoxy) acetic acid, TODA) on the viscosity and the elastic properties of the suspensions were also recorded. For any given water-propanediol mixture TODA was the most effective of the investigated dispersants. It resulted in the lowest slurry viscosities and the highest tan δ values, indicating best dispersing properties and the lowest elastic shear modulus, respectively. The water-propanediol proportion influenced the properties of the slurries strongly. For all dispersants the relative viscosity of the slurries decreased with increasing propanediol content. This was found to be a non-linear function in the case of TODA, where at a minimum level of 50 wt.% propanediol the properties of the slurries were the best. For the other dispersants this was a linear function, which indicates that the dispersing quality there only depended on the polarity of the dispersing medium. A screen printing paste was p

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Author

C. Renger; P. Kuschel; A. Kristoffersson; B. Clauss; W. Oppermann; W. Sigmund

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0955-2219)

Published

2007

Language

EN

Field

Materials Science (Physical Sciences)