Anticorrosion properties of polyaniline-coated pigments in organic coatings

被引:125
作者
Kalendova, Andrea [1 ]
Sapurina, Irina [2 ]
Stejskal, Jaroslav [3 ]
Vesely, David [1 ]
机构
[1] Univ Pardubice, Fac Chem Technol, Pardubice 53210, Czech Republic
[2] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
[3] Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague 6, Czech Republic
关键词
Anticorrosion pigment; Polyaniline; Coating; Conducting polymer; Anticorrosion efficiency;
D O I
10.1016/j.corsci.2008.08.044
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Four pigments of various morphology - specularite, alpha-Fe2O3; goethite, alpha-FeO(OH); talc, (Mg-3(OH)(2)-(Si4O10); and graphite, C - without and with polyaniline phosphate coating, were tested for the anticorrosion performance in coatings produced by epoxy binders on iron plates. The corrosion tests were carried out in a condenser chamber with continuous water condensation or humidity with sulfur dioxide, and in a salt mist cabinet. Polyaniline coating of pigments in all cases improved the anticorrosion properties. Graphite coated with polyaniline performed the best among eight systems under investigation. The role of graphite and polyaniline conductivity in the electron transfers associated with corrosion of iron has been proposed. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3549 / 3560
页数:12
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