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

doi:10.3390/pr10091853

IMR OpenIR

	A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings
	Yang, Marshall Shuai 1; Huang, Jinbao 1; Noel, James Joseph 2; Chen, Jian 2,3; Barker, Ivan 4; Henderson, Jeffrey Daniel 4; Zhang, Hui 1; Zhang, Haiping 5; Zhu, Jesse 1
通讯作者	Zhang, Hui(hpzhang@tju.edu.cn) ; Zhang, Haiping(hzhang1@uwo.ca)
	2022-09-01
发表期刊	PROCESSES
卷号	10 期号:9 页码:19
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.
关键词	powder coatings polyester zinc-rich anti-corrosive pigment sacrificial anode galvanic barrier EIS electrochemical impedance spectroscopy
资助者	Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant ; NSERC
DOI	10.3390/pr10091853
收录类别	SCI
语种	英语
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
WOS类目	Engineering, Chemical
WOS记录号	WOS:000856767400001
出版者	MDPI
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175538
专题	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.