The Maximum Solid Loading and Viscosity Estimation of Ultra-Fine ZnO-Al2O3 Mixed Powders Aqueous Suspensions

Yi Hua Sun; Chen Hui Li; Wei Hao Xiong; Ping Feng

doi:10.4028/www.scientific.net/AMR.512-515.1803

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515The Maximum Solid Loading and Viscosity Estimation...

The Maximum Solid Loading and Viscosity Estimation of Ultra-Fine ZnO-Al₂O₃ Mixed Powders Aqueous Suspensions

Abstract:

The rheological behavior of sub-micron zinc oxide and alumina mixture powders aqueous suspension has been investigated over a wide range of volumetric solids loading (Ø = 0.2–0.55), in which polyacrylic acid (PAA) was used as a dispersant. The dependence of relative viscosity (η_r)–solids loading (Ø) determined experimentally was compared with models. The experimental results showed that the suspension apparent viscosity (η) reached a minimum as the dispersant addition reached 0.2 wt%, the viscosity increased with the solids loading and the rheological behavior of the suspension was content basically with the model proposed by Liu. From η_r–Ø relationship the maximum solid loading (Ø_m) was estimated to be 0.55, which was in accord with our experimental results.

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Advanced Materials Research (Volumes 512-515)

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1803-1806

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https://doi.org/10.4028/www.scientific.net/AMR.512-515.1803

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May 2012

Authors:

Yi Hua Sun, Chen Hui Li, Wei Hao Xiong, Ping Feng

Keywords:

Suspension, Ultra-Fine Powder, Viscosity Prediction, Zinc Oxide and Alumina

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