USO DO PLANEJAMENTO EXPERIMENTAL PARA O DESENVOLVIMENTO DE TINTAS E ADESIVOS ANTICORROSIVOS

The aim of this work is to study the influence of clay content and the number of layers "active" in the musical parameters and the degree of rust bubbles, using a experimental plan 22 type with three experiments in the central point. For this, polymer-clay nanocomposites obtained using montmorillonite (MMT), as the inorganic phase, and poly(methyl methacrylate) (PMMA), as organic phase, for use as adhesives and coatings (paints and varnishes) with high resistance to corrosion, to be applied on metal structures used in the petroleum industry. Measures of thickness and adhesion of films to demonstrate the effectiveness of the coating produced were also conducted. From the analysis of response surfaces show that the best corrosion characteristics are observed for acrylic coatings fortified with 5% organoclay layers and three "active". This behavior is expected on account of the further enhancement provided by the high concentration of the components forming coating.