Comparison of performance between granite waste pigments based paints and soils pigments based paints

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Abstract

This work aims to produce paints using granite waste, as a pigment, and compare their performance to soil pigments based paints, in terms of hiding power and abrasion resistance. Initially, the residue and soils were physically, mineralogically and morphologically characterized. For the production of the paint samples, an experimental model was defined, based on the variation of the proportions of pigment and resin. The proportion of water varied in each sample, in order to maintain the viscosity within a range considered ideal for application. Sequentially, tests were done to determine the hiding power and abrasion resistance of inks. It was found that, in comparison to soil paints, the granite residue paints presented greater hiding power. This result can be explained by the characteristics of the granite residue, which allowed a high nonvolatile content in the mixtures. With respect to abrasion resistance, granite residue paints showed less resistance than soil paints, possibly due to the granulometry of the residue that resulted in a greater roughness of film. In addition, none ink sample satisfied the minimum specifications prescribed in the Brazilian standards for hiding power and abrasion resistance, at the same time. This means that these inks, when used, will require more repair and repainting over time than conventional paints.

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Lopes, M. M. S., Alvarenga, R. de C. S. S., Pedroti, L. G., Mendes, B. C., Cardoso, F. de P., & de Azevedo, A. R. G. (2018). Comparison of performance between granite waste pigments based paints and soils pigments based paints. In Minerals, Metals and Materials Series (Vol. Part F8, pp. 485–496). Springer International Publishing. https://doi.org/10.1007/978-3-319-72484-3_51

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