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Xiaofan Zhai,Congtao Sun,Ke Li,Maria Agievich,Jizhou Duan,Baorong Hou 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.36 No.-
The present research seeks to address biologically influenced corrosion by electrodepositing a novel 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one(DCOIT)-zinc composite films for enhanced corrosion resistantproperties. Investigated by electrochemical methods, energy dispersive spectroscopy distributionmapping, and infrared absorption spectroscopy, a deposition mechanism was proposed wherein theDCOIT molecule chelated the zinc ion to participate in electrodeposition. The DCOIT-zinc chelateproduced obvious alterations in the surface morphology and crystal orientations. Thermogravimetricanalysis determined the DCOIT mass fraction in the composite film was 5%. The DCOIT-zinc compositefilm demonstrated uniform corrosion in natural seawater and the enhanced anticorrosion property wasachieved by successfully embedding DCOIT.
Mxene structure: A key parameter in corrosion barrier performance of organic coatings
Ziyang Zhou,Sepideh Pourhashem,Zhengquan Wang,Jiawen Sun,Xiaohong Ji,Xiaofan Zhai,Jizhou Duan,Baorong Hou 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-
In this research, the effects of fresh and oxidized MXene on the surface, adhesion, and corrosion-resistantproperties of waterborne epoxy coatings are considered. The oxidized MXene is prepared through storageof fresh MXene nanosheets in an open vial for 1 month. The results confirm that the waterborne epoxycoating loaded with silane functionalized fresh MXene nanosheets (epoxy/F-MXene) has significantlyhigher barrier performance and anti-corrosion behavior than the sample modified with silane functionalizedoxidized MXene nanosheets (epoxy/F-O-MXene). Indeed, the F-MXene nanosheets (with defectfreeand large two dimensional morphology) are able to effectively inhibit the path of corrosive mediaas well as increment the epoxy matrix compactness compared to the F-O-MXene (with broken nanosheetmorphology composed of TiO2 nanoparticles) due to rapid oxidation of the MXene nanosheets in theenvironment. Besides, the epoxy/F-MXene nanocomposite coating has slightly higher water contact angleand adhesion strength to the metallic substrate compared to the epoxy/F-O-MXene. The results of thisresearch clearly reveal the importance of preventing MXene oxidation before application as nanofillerin the polymer coatings.