Understanding of naphthalene sulfonate formaldehyde condensates as a dispersing agent to stabilise raw porcelain gres suspensions: Surface adsorption and rheological behaviour

The continuous demand of porcelain gres as a raw material for many ceramic applications is requiring a particular attention to the green body properties. The fluidity of these suspensions must be appropriate and their solid content must be as high as possible in order to minimize the drying cost. In this work, slightly additions of sodium acrylate copolymer and naphthalene sulfonate formaldehyde condensate (SNSFC) in the classical deflocculating mixture with sodium silicate were tested. The stability of dispersions was investigated through adsorption isotherms and rheological properties. The results show that the naphthalene sulfonate formaldehyde condensates proved to be effective as dispersant for raw porcelain suspensions.