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2017 | 132 | 3 | 825-829
Article title

Effect of Calcined Colemanite Addition on the Rheological Behaviour of Porcelain Suspension

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EN
Abstracts
EN
A standard composition for hard porcelain production was prepared by mixing 50 wt% kaolin, 25 wt% potassium feldspar and 25 wt% quartz. Calcined colemanite powders were added to the porcelain formulation by replacing the potassium feldspar up to 5 wt% to explore its effect on the rheological behaviour of porcelain slip casting. A rheological study has been carried out in order to optimize the processing of the slip casting by using a rotational stress-controlled rheometer. The measurements were performed at constant temperature (25°C) using a parallel plate configuration. Sweep measurements were then conducted in the shear rates ranging from about 0.1-1000 s¯¹. The stability of the suspensions with ammonium polyacrylate (Darvan 821A) was determined in order to select the suitable dispersant amount. In order to achieve casting of acceptable characteristics on a plaster of Paris mould, the slurry should have the appropriate thixotropic or shear-thinning behaviours. Therefore, the same favourable thixotropic behaviour of slurries of different amount of calcined colemanite powders, the solid contents of the slurries have been optimised.
Keywords
Publisher

Year
Volume
132
Issue
3
Pages
825-829
Physical description
Dates
published
2017-09
Contributors
author
  • Afyon Kocatepe University, Material Science and Engineering Department, Afyonkarahisar, Turkey
author
  • Afyon Kocatepe University, Material Science and Engineering Department, Afyonkarahisar, Turkey
author
  • Afyon Kocatepe University, Material Science and Engineering Department, Afyonkarahisar, Turkey
author
  • Afyon Kocatepe University, Material Science and Engineering Department, Afyonkarahisar, Turkey
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-app132z3-iip006kz
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