A magnetic “Band-Aid” incorporated with Fe3O4 NPs modified epoxy binder for in-situ repair of organic coating under seawater
To repair the anti-corrosive coatings directly under seawater is an up-and-coming approach, which can effectively prolong the service life of coated steel structures once the coatings suffered from unexpected scratches. Inspired by the design of Band-Aid for the healing of wound, a magnetic “Band-Aid” (MB) combined with oleic acid modified FeO nanoparticles (OMNPs) was designed to realize the in-situ repair of anti-corrosion coatings under seawater and the experimental results indicated that this coating repair method by MB incorporated with OMNPs modified epoxy binder is satisfying and effective when the addition of OMNPs epoxy binder was more than 1.0 wt%. Furthermore, the penetration of seawater in the vertical direction of the coating can be prevented by MB during the curing process of epoxy binder, the formation of permeation channels parallel to the coating can be blocked with the aid of OMNPs, which mainly based on the magnetic force between the MB and substrate steel, as well as the competitive-wetting and target-driving functions of OMNPs. The current work may provide a feasible approach to repair the organic anti-corrosion coating directly, which coated on the steel structures under seawater.
National Natural Science Foundation of China;Taishan Scholar Project of Shandong Province[tsqn202306160];Natural Science Foundation of Shandong Province[ZR2022QE155];
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|Document Type||Journal Article|
|Department||Department of Ocean Science and Engineering|
1.College of Chemistry and Chemical Engineering,Yantai University,Yantai,264005,China
2.State Key Laboratory for performance and structure safety of Petroleum Tubular Goods and Equipment,CNPC Tubular Goods Research Institute,Xi 'an,Shaanxi,710077,China
3.School of Materials Science and Engineering,China University of Petroleum (East China),Qingdao,266580,China
4.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
Feng，Zhenliang,Huang，Jufeng,Guo，Hui,等. A magnetic “Band-Aid” incorporated with Fe3O4 NPs modified epoxy binder for in-situ repair of organic coating under seawater[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects,2023,676.
Feng，Zhenliang.,Huang，Jufeng.,Guo，Hui.,Zhang，Xinyue.,Li，Yuzhu.,...&Liu，Jie.(2023).A magnetic “Band-Aid” incorporated with Fe3O4 NPs modified epoxy binder for in-situ repair of organic coating under seawater.Colloids and Surfaces A: Physicochemical and Engineering Aspects,676.
Feng，Zhenliang,et al."A magnetic “Band-Aid” incorporated with Fe3O4 NPs modified epoxy binder for in-situ repair of organic coating under seawater".Colloids and Surfaces A: Physicochemical and Engineering Aspects 676(2023).
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