Properties of calcined kaolins in anticorrosion paints depending on PVC, chemical composition and shape of particles

► Calcined kaolins were investigated as anticorrosive pigment for protective coatings. ► Model epoxy paints were formulated with the increasing content of kaolins. ► Paints were exposed to laboratory corrosion tests in the environments of neutral salt mist and of condensed humidity. ► Mechanical resistance of coatings based on epoxy resin was found. ► Optimum concentration of the individual types of kaolins to be used in epoxy resin was identified.