Sodium Silicate Ceramic Wool
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Sodium silicate is a generic name for chemical compounds with the formula na 2x si y o 2y x or na 2 o x sio 2 y such as sodium metasilicate na 2 sio 3 sodium orthosilicate na 4 sio 4 and sodium pyrosilicate na 6 si 2 o 7 the anions are often polymeric these compounds are generally colorless transparent solids or white powders and soluble in water in various amounts.
Sodium silicate ceramic wool. In this sodium silicate pottery technique the residual sodium silicate gives a slightly glazed surface like a thin salt glaze. This liquid compound can be used as a glue a homemade refractory floor sealer preserving eggs and many ot. Because sodium silicate is sticky and dries hard it can be used as a glue to bind ceramic particles together even aggregates. In this video i attempt to make sodium silicate.
Combined with the hardener sodium silicate is responsible for the transformation of the matrix from a ceramic slurry into an insoluble polymeric form. This is a siccative or drying agent that will harden the layer its applied to causing it dry out and become brittle. Mixtures of sodium silicate and perlite for example can be rammed into molds to form shapes that dry with zero shrinkage and have excellent insulating properties. On firing it forms a ceramic bond.
To achieve the minimum water content in the final product a sodium silicate solution grade 079 has been selected as the base liquid for the biocomposites and its most important physico.