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Open AccessFeature PaperArticle

Study of the Durability and Aesthetical Properties of Powder Coatings Admixed with Pearlescent Pigments

Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy
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Coatings 2020, 10(3), 229; https://doi.org/10.3390/coatings10030229
Received: 30 January 2020 / Revised: 27 February 2020 / Accepted: 28 February 2020 / Published: 3 March 2020
(This article belongs to the Special Issue Powder and High-Solid Coatings)
Powder coatings are commonly used to protect metallic substrates because of their good protection properties together with their aesthetical ones. In this work, the aesthetic and functional properties of powder coatings admixed with pearlescent pigments were investigated. The main aim of this work is represented by the evaluation of the coating properties and their change assessment after accelerated ageing treatments, such as UV and salt spray exposure. Changes in gloss, color and roughness were recorded before, during, and after UVA and UVB exposure. All the samples showed good resistance to UVA irradiation, whereas UVB light caused a huge variation in surface properties. Further insights on the degradation of the polymeric matrix were gained by exploiting FT-IR analyses, which could be correlated to the change of color. The protection properties of the coating were assessed by exploiting an acetic salt spray test. All the samples showed good resistance to aggressive environments, and no pigment effect on the degradation of the coatings could be detected. View Full-Text
Keywords: pearlescent pigments; powder coatings; durability; ageing treatments pearlescent pigments; powder coatings; durability; ageing treatments
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MDPI and ACS Style

Rossi, S.; Russo, F.; Bouchakour Rahmani, L. Study of the Durability and Aesthetical Properties of Powder Coatings Admixed with Pearlescent Pigments. Coatings 2020, 10, 229.

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