Abstract
This study focuses on nano cerium oxide particles as alternative additives in solvent-based alkyd coatings in order to improve anticorrosive and anti-aging properties. The paint samples were formulated with cerium oxide micro and nanoparticles, and the coating quality characteristics were compared with coating formulated with commercial anticorrosive and UV-aging agents. Formulations were prepared with 3 wt % commercial anticorrosive agent as reference material (RP), 3 wt % cerium oxide microparticles (CER1), 3 wt % and 1% cerium oxide nanoparticles (CER2 and CER3), respectively. The basket milling technique with zirconium balls was used for the preparations of coatings and characterizations were performed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and contact angle measurements. Improvement in the anticorrosive properties was proven with electrochemical impedance spectroscopy (EIS) and accelerated salt spray tests based on ISO 4628 Evaluation of Degradation of Coatings. Furthermore, physical and mechanical tests were run according to standard test methods for coatings and reported. Results showed that cerium oxide particles provide anticorrosive, UV defender, and self-cleaning effects, besides excellent physical resistance to alkyd coatings. The impact of cerium oxide nanoparticles was found to be stronger than those of the microparticles.
Highlights
Coatings or paints have been present in human life since ancient times
Extenders or fillers, and other additives can be complicated for spectral interpretation so that, in order to identify characteristic Fourier transform infrared spectroscopy (FTIR)-ATR spectrum of paints, dried resin films were used
The result of this work showed that adding cerium oxide micro and nanoparticles to coating formulations provides anticorrosive, anti-aging, and self-cleaning effects
Summary
Coatings or paints have been present in human life since ancient times. Currently, the global paints and coatings market is expected to grow by the compound annual growth rate (CAGR) of 5.75% during2016–2021 and to reach a value of USD 178.8 billion by 2021 [1]. Coatings or paints have been present in human life since ancient times. The global paints and coatings market is expected to grow by the compound annual growth rate (CAGR) of 5.75% during. 2016–2021 and to reach a value of USD 178.8 billion by 2021 [1]. In developing countries, the tendency to renovate commercial and residential buildings is triggering the development of new generation paints which have improved properties against corrosion, dampness, and bacterial effects. Ulaeto et al reviewed the significant advances in corrosion sensing, self-cleaning, anti-fouling, and self-healing polymeric coating systems [2]. The presence of nano-sized additives greatly improves coating performance. Anticorrosive coatings will especially progress in tandem with nanotechnology
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