Sodium Hexametaphosphate as Deflocculation Agent for Calcium Aluminate Cements in Porcelain Body

Radomír Sokolař; Lucie Vodová

doi:10.4028/www.scientific.net/AMR.897.30

Paper Titles

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Testing Self-Levelling Floor Screeds on the Basis of Ternary Binder
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Thermoanalytical Study of Binders Containing Pozzolanic and Latent Hydraulic Materials
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Reduction of CO₂ Emissions at Firing of Binders Type Portland Cement
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Sodium Hexametaphosphate as Deflocculation Agent for Calcium Aluminate Cements in Porcelain Body
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Influence of Different Grinding Types on Granulometry of Cement Grains
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Performance of Fiber-Cement Boards in Biogenic Sulphate Environment
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Decorative Multi-Component Alkali Activated Cements for Restoration and Finishing Works
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Testing of Clay Used for Building a Folk House Replica by Traditional Techniques
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Sodium Hexametaphosphate as Deflocculation Agent for Calcium Aluminate Cements in Porcelain Body

Abstract:

Influence of typical ceramic deflocculant – sodium hexametaphosphate – on the rheological properties (viscosity) of calcium aluminate cement paste, porcelain raw materials mixture (casting slip), and fired porcelain body respectively, was determined. It was used two different typed of calcium aluminate cements (from two sources – producers - Istra, Almatis) with different content of Al₂O₃ (40 % and 70 %). Sodium hexametaphosphate decreases of water content needed to prepare slip casting with constant viscosity. Deflocculant increases the modulus of rupture MOR of dried green body and its bulk density. Sodium hexametaphosphate admixture is very suitable for the creation of porcelain body with low porosity after firing.