Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection

doi:10.1016/j.porgcoat.2021.106236

IMR OpenIR

	Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection
	Li, Jianyang 1,2; Shi, Hongwei 1; Liu, Fuchun 1; Han, En-Hou 1
通讯作者	Shi, Hongwei(hwshi@imr.ac.cn)
	2021-07-01
发表期刊	PROGRESS IN ORGANIC COATINGS
ISSN	0300-9440
卷号	156 页码:11
摘要	In this work, urea-formaldehyde (UF) microcapsules loaded with tung oil were prepared by in-situ polymerization. The mean diameter of the obtained microcapsules was 8.5 mu m. The self-healing coating was prepared by the addition of 5 wt.% microcapsules into an epoxy matrix and then painted on the AA2024 substrate. The effect on the coating properties after the incorporation of microcapsules was investigated by adhesion tests and electrochemical impedance spectroscopy (EIS). It is found that 5 wt.% microcapsules in coating formulations did not impart a significant negative effect on coating properties. SEM and EIS tests were used to evaluate the selfhealing effect. According to the fitting results of the EIS data on the scratched samples, the new film that formed by the polymerization of tung oil at the scratched area in the self-healing coating displays a resistance value of more than 106 omega.cm2, which is much higher than 103 omega.cm2 of the oxide layer in the neat epoxy coating. The neutral salt spray tests also confirm the good anti-corrosion performance of the self-healing coating.
关键词	Microcapsules Corrosion protection Epoxy coatings Self-healing EIS
资助者	National Natural Science Foundation of China
DOI	10.1016/j.porgcoat.2021.106236
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51571202]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Applied ; Materials Science, Coatings & Films
WOS记录号	WOS:000663296600006
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：68[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/321006/160650
专题	中国科学院金属研究所
通讯作者	Shi, Hongwei
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Shenyang 230026, Peoples R China
推荐引用方式 GB/T 7714	Li, Jianyang,Shi, Hongwei,Liu, Fuchun,et al. Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection[J]. PROGRESS IN ORGANIC COATINGS,2021,156:11.
APA	Li, Jianyang,Shi, Hongwei,Liu, Fuchun,&Han, En-Hou.(2021).Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection.PROGRESS IN ORGANIC COATINGS,156,11.
MLA	Li, Jianyang,et al."Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection".PROGRESS IN ORGANIC COATINGS 156(2021):11.