Uso de resíduos de tinta em pó de pintura eletrostática para fabricação de revestimentos para piso
Use of electrostatic paint powder paints for the manufacture of floor coating
Carlos Eduardo Bruxel, Sandra Raquel Kunst, Luã Tainachi Mueller, Fernando Dal Pont Morisso, Carlos Leonardo Pandolfo Carone, Cláudia Trindade Oliveira
Resumo
A pintura eletrostática é um processo eficiente e bastante difundido de revestimento de peças metálicas. No entanto, durante o processo, parte da tinta em pó é perdida gerando resíduo. Portanto, este artigo propôs o uso deste resíduo como matéria-prima para a fabricação de revestimentos para pisos. Para isso, amostras foram elaboradas a partir de tinta híbrida recuperada (THR) diretamente do chão reaproveitamento do setor de pintura de uma empresa do ramo de pintura industrial e foram comparadas com amostras de tinta poliéster virgem (TPV) e tinta híbrida virgem (THV). As amostras foram avaliadas por meio de caracterizações térmicas, físico-químicas, morfológicas e mecânicas. Por meio do ensaio de flexão, obteve-se um módulo de resistência à flexão médio de 28,14 MPa, o que tornou possível comparar o revestimento polimérico de THR com os revestimentos cerâmicos da classe Semi-Grés, mostrando que esta alternativa de reciclagem apresenta resistência mecânica suficiente para a aplicação. As microscopias apresentaram os resíduos oriundos do chão da fábrica interagindo em meio à matriz polimérica da resina da tinta
Palavras-chave
Abstract
Electrostatic painting is an efficient and widespread process for coating metal parts. However, during the process, part of the powder paint is lost generating waste. Therefore, this article proposed the use of this residue as a raw material for the manufacture of floor coverings. For this, samples were made from recovered hybrid paint (THR) directly from the reuse of the painting sector of a company in the industrial painting sector and were compared with samples of virgin polyester paint (TPV) and virgin hybrid paint (THV). The samples were evaluated by means of thermal, physico-chemical, morphological and mechanical characterizations. Through the flexion test, an average flexural strength module of 28.14 MPa was obtained, which made it possible to compare the polymeric THR coating with the ceramic tiles of the Semi-Stoneware class, showing that this recycling alternative presents sufficient mechanical strength for the application. Microscopies showed residues from the factory floor interacting with the polymeric matrix of the paint resin.
Keywords
References
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Submitted date:
12/11/2020
Accepted date:
03/12/2021
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