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Slip Chemistry

Kaolin vs Ball Clay Plasticity: Deflocculation Dynamics and Greenware Shrinkage

Examining platelet surface electrical charges, sodium silicate electrolyte dispersion, and drying warpage control in casting slips.

By Lars Lindholm, Ceramic Materials Engineer October 10, 2026 • 7 min read
Kaolin vs Ball Clay Plasticity: Deflocculation Dynamics and Greenware Shrinkage

Colloidal Platelet Interactions and Green Strength

Ball clays contribute fine colloidal platelets that impart greenware strength but increase total volumetric drying shrinkage to nearly 15%.

Zeta Potential and Deflocculant Additions

Deflocculation using sodium silicate and sodium polyacrylate alters the zeta potential of suspended particles, allowing high specific gravity slurries with minimal water.

Controlled Humidity Drying Chamber Kinetics

Controlled relative humidity drying chambers prevent uneven capillary moisture evacuation, eliminating base cracks in geometric forms.

⚠️ Technical & Safety Verification

The empirical methods outlined in this study reflect verified minimalist ceramic craftsmanship & vitrified stoneware physics protocols and field measurements. Always verify safety standards and consult accredited specialists before executing structural or high-energy physical tests.

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