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题名: Accelerated self-healing performance of magnetic gradient coating
作者: Wang, Wei1; Li, Weihua1,2; Fan, Weijie1,3; Zhang, Xiaoying1; Song, Liying1; Xiong, Chuansheng1; Gao, Xiang1; Liu, Xiaojie1,3
刊名: CHEMICAL ENGINEERING JOURNAL
出版日期: 2018-01-15
卷号: 332, 页码:658-670
关键词: Self-healing ; Scanning vibrating electrode technique ; Electrochemical measurements ; Inhibitor ; Corrosion protection
DOI: 10.1016/j.cej.2017.09.112
文章类型: Article
英文摘要: In this study, we present the novel self-healing magnetic microcapsule preparation of poly(urea-formaldehyde) embedded with benzotriazole (BTA) and magnetic multi-wall carbon nanotubes (MWCNTs) to accelerate the self-healing efficiency of the coating significantly. The BTA played a role of the corrosion inhibitor, while the magnetic MWCNTs served as a target for the formation process of self-healing magnetic gradient (SMG) coating. The magnetic microcapsules could be easily as well as rapidly migrated in the coating solution via an external magnetic field. The SMG coating not only shortened the migration route of the released BTA, but also accelerated quickly the formation of a passivation film, and the corrosion of the copper was hindered, after the coating was damaged mechanically. It was further demonstrated that initial self-healing efficiency of SMG coating was approximately 6.4 times more than that of self-healing coating without magnetism. The present work successfully demonstrated the accelerated self-healing activity of magnetic MWCNTs microcapsules in protecting copper surfaces. The outcomes might help to magnetize the material and guide future design of self-healing coating.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000414913700071
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.qdio.ac.cn/handle/337002/143048
Appears in Collections:海洋腐蚀与防护研究发展中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, 1 Wenhai Rd, Qingdao 266237, Peoples R China
3.Univ Chinese Acad Sci, 19 Jia Yuquan Rd, Beijing 100039, Peoples R China

Recommended Citation:
Wang, Wei,Li, Weihua,Fan, Weijie,et al. Accelerated self-healing performance of magnetic gradient coating[J]. CHEMICAL ENGINEERING JOURNAL,2018,332:658-670.
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