| A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings | |
| Yang, Marshall Shuai1; Huang, Jinbao1; Noel, James Joseph2; Chen, Jian2,3; Barker, Ivan4; Henderson, Jeffrey Daniel4; Zhang, Hui1; Zhang, Haiping5; Zhu, Jesse1 | |
| Corresponding Author | Zhang, Hui(hpzhang@tju.edu.cn) ; Zhang, Haiping(hzhang1@uwo.ca) |
| 2022-09-01 | |
| Source Publication | PROCESSES
 |
| Volume | 10Issue:9Pages:19 |
| Abstract | Powder coatings represent an environmentally friendly VOC-free alternative to widely used solvent-borne zinc-rich coatings, with economic and ecological benefits. In particular, powder coatings have several advantageous properties, such as chemical resistance and mechanical strength. However, the performance and characteristics of polyester-based zinc-containing powder coatings remain unknown. In this study, the corrosion performance of polyester powder coatings containing up to 80% zinc is compared. Electrochemical and salt-spray testing results indicate that coatings formulated with 80% zinc demonstrate superior anti-corrosive properties than coatings with lower zinc dosages. Two distinct behavioral phases of the coating with 80% zinc were observed by measurements of open circuit potential (OCP) and polarization resistance (R-p) during immersion tests-a phase indicative of a barrier effect and a phase consistent with galvanic protection. The evolution of the coating was further characterized and interpreted as five stages by electrochemical impedance spectroscopy (EIS), and the mechanistic details were discussed. This UV-resistant single-layer powder coating has the potential to replace the commonly used high-VOC multi-layer liquid coating systems at a significantly lower cost. |
| Keyword | powder coatings polyester zinc-rich anti-corrosive pigment sacrificial anode galvanic barrier EIS electrochemical impedance spectroscopy |
| Funding Organization | Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant ; NSERC |
| DOI | 10.3390/pr10091853 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant[RGPIN-2018-06256] ; NSERC[RGPIN-2018-06672] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000856767400001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175535 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Hui; Zhang, Haiping |
| Affiliation | 1.Western Univ, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada 2.Western Univ, Dept Chem, London, ON N6A 5B7, Canada 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Western Univ, Surface Sci Western, London, ON N6G 0J3, Canada 5.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Marshall Shuai,Huang, Jinbao,Noel, James Joseph,et al. A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings[J]. PROCESSES,2022,10(9):19. |
| APA | Yang, Marshall Shuai.,Huang, Jinbao.,Noel, James Joseph.,Chen, Jian.,Barker, Ivan.,...&Zhu, Jesse.(2022).A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings.PROCESSES,10(9),19. |
| MLA | Yang, Marshall Shuai,et al."A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings".PROCESSES 10.9(2022):19. |
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