| Self-healing epoxy coating based on tung oil-containing microcapsules for corrosion protection | |
| Li, Jianyang1,2; Shi, Hongwei1; Liu, Fuchun1; Han, En-Hou1 | |
| Corresponding Author | Shi, Hongwei(hwshi@imr.ac.cn) |
| 2021-07-01 | |
| Source Publication | PROGRESS IN ORGANIC COATINGS
 |
| ISSN | 0300-9440 |
| Volume | 156Pages:11 |
| Abstract | 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. |
| Keyword | Microcapsules Corrosion protection Epoxy coatings Self-healing EIS |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.porgcoat.2021.106236 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51571202] |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Applied ; Materials Science, Coatings & Films |
| WOS ID | WOS:000663296600006 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160650 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Shi, Hongwei |
| Affiliation | 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 |
| 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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