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A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings

文献类型：期刊论文

作者Yang, Marshall Shuai1; Huang, Jinbao1; Noel, James Joseph2; Chen, Jian2,3; Barker, Ivan4; Henderson, Jeffrey Daniel4; Zhang, Hui1; Zhang, Haiping5; Zhu, Jesse1
刊名PROCESSES
出版日期2022-09-01
卷号10期号:9页码:19
关键词powder coatings polyester zinc-rich anti-corrosive pigment sacrificial anode galvanic barrier EIS electrochemical impedance spectroscopy
DOI10.3390/pr10091853
通讯作者Zhang, Hui(hpzhang@tju.edu.cn) ; Zhang, Haiping(hzhang1@uwo.ca)
英文摘要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.
资助项目Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant[RGPIN-2018-06256] ; NSERC[RGPIN-2018-06672]
WOS研究方向Engineering
语种英语
出版者MDPI
WOS记录号WOS:000856767400001
资助机构Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant ; NSERC
源URL[http://ir.imr.ac.cn/handle/321006/175537]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Hui; Zhang, Haiping
作者单位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
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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