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Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection
Li, Jianyang1,2; Shi, Hongwei1; Liu, Fuchun1; Han, En-Hou1
Corresponding AuthorShi, Hongwei(hwshi@imr.ac.cn)
2021-07-01
Source PublicationPROGRESS IN ORGANIC COATINGS
ISSN0300-9440
Volume156Pages:11
AbstractIn 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.
KeywordMicrocapsules Corrosion protection Epoxy coatings Self-healing EIS
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.porgcoat.2021.106236
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51571202]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Applied ; Materials Science, Coatings & Films
WOS IDWOS:000663296600006
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160650
Collection中国科学院金属研究所
Corresponding AuthorShi, Hongwei
Affiliation1.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
Recommended Citation
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.
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