ESTUDO DE DEFLOCULANTES NA REOLOGIA DE SUSPENSÕES DE GRÊS PORCELANATO

Abstract

Porcelain tile is a type of ceramic tile that stands out for its decorated surface aesthetics, mechanical properties, low water absorption, and resistance to chemical attack. In its production, raw materials such as clay and feldspar are used. Feldspar is responsible for the formation of the glass and liquid phases during firing, it also develops characteristics such as low porosity and high strength in the ceramic piece. For the production of porcelain, a ceramic suspension is produced, which contains the necessary materials so that during processing, the desired properties are obtained. Porcelain tile suspensions are made up of clay minerals, deflocculants, plasticizers and other elements that guarantee their quality. In the production of porcelain stoneware, deflocculants are generally used, so that the dispersion of clay particles occurs. The stabilization between the clay and the deflocculant is determined by the forces of attraction and repulsion of the clay particles, which depends on the physicochemical characteristics between them. Therefore, this work seeks to verify, by analyzing the rheology of suspensions, the behavior of the dispersion, and the variation of properties in a porcelain tile suspension, from the addition of different types of deflocculants.