化工进展2017，Vol.36Issue(12)：4562-4568,7.DOI:10.16085/j.issn.1000-6613.2017-0732
新型石墨烯/聚吡咯水性防腐涂料的制备及性能
Preparation and anticorrosion performance of an innovative graphene/polypyrrole waterborne anticorrive coatings
摘要
Abstract
Inherent shortcomings of the traditional grapheme anticorrosive coatings include inhomogeneous packing components,low anticorrosion performance,and unstable paintcoat. To improve the anticorrosion performance and dispersibility of the graphene anticorrosive coating,an innovative grapheme(rGO)/polypyrrole(PPy)/waterborne epoxy resin(EP)was prepared using rGO/PPy and EP as fillers and film forming material,respectively. The modifiedin situpolymerization method was applied to prepare rGO/PPy complex. The structure of the coating composition was characterized by X-ray diffractometer(XRD),fourier infrared spectrum(FTIR),raman spectra (Raman),scanning electron microscope(SEM)and transmission electron microscopy(TEM), respectively. The anticorrosive performance of rGO/PPy/EP coating on Q235 carbon steel was determined by Tafel polarization curves(Tafel),impedance spectra(EIS)and corrosion morphology. The results showed that the rGO/PPy coating prepared by modifiedin situ polymerization method had excellent dispersibility and compact structure. The corrosion potentialEcorr,the corrosion current density Icorr and the protection of bare steelPi of the 1% rGO/PPy/EP coating were –613mV,46.42μA/cm2 and 91.02%,respectively. Compared with rGO/EP anti-corrosive coating,the corrosion current density of rGO/PPy/EP coating was decreased by 38.62μA/cm2. Furthermore,the rGO/PPy/EP coating possessed excellent barrier properties to O2 and H2O. In conclusion,the rGO/PPy/EP anticorrosive coating prepared byin situ polymerization method was promising as it was environment-friendly,excellent in dispersibility,stable in structure and outstanding in anticorrosion.关键词
石墨烯/复合材料/腐蚀/电化学/分散性Key words
graphene/composites/corrosion/electrochemistry/dispersion分类
化学化工引用本文复制引用
张兰河,李佳栋,刘春光,王旭明..新型石墨烯/聚吡咯水性防腐涂料的制备及性能[J].化工进展,2017,36(12):4562-4568,7.基金项目
吉林省科技发展计划(20160101295JC,20150519020JH)及吉林省省校合作技术开发(吉工信科技2011-507)项目. （20160101295JC,20150519020JH）
