Аnti-corrosion coatings based on modified epoxy compositions

: 144-147
Lviv Polytechnic National University
Karpenko Physico-mechanical Institute of the NAS of Ukraine
Lviv Polytechnic National University
Lviv Polytechnic National University

The influence of surface-modified titanium dioxide on the electrochemical features of epoxy compositions was researched. The raise of epoxy primer protective properties by the presence of surface-modified fillers in its composition was determined. It is shown that the mechanism of the modified filler protective effect in epoxy coating applied on the steel is similar to the effect of solid zinc phosphate which effectiveness corresponds to the level of the known inhibitory pigment.

  1. Shreir L.L., Jarman R.A., Burstein G.T. (1994). Corrosion (3rd Edition) V.1. -doi.org/10.1016/C2009-0-24066-9.
  2. Romagnoli R. and Vetere V.F. (2005). Heterogeneous reaction between steel and zinc phosphate. Corrosion, 51 (2), 116-123. -NACE-95020116 https://doi.org/10.5006/1.3293583
  3. M.C.Deya, G.Blustein, , R..Romagnoli, B.del Amo. (2009). Zinc hypophosphite: a suitable additive for anticorrosive paints to promote pigments synergism. Journal of Coatings Technology and Research, 6 (3), 369+. -GALE|A206957066 https://doi.org/10.1007/s11998-008-9147-z
  4. Rammelt U. and Reinhard G. (1994). Characterization of active pigments in damage of organic coatings on steel by means of electrochemical impedance spectroscopy. Progress in Organic Coatings, 24, 309-322. - https://doi.org/10.1016/0033-0655(94)85022-4
  5. A.Iversen, M.Backlund, J.O.Nilsson, H.Klang and D.Thierry. (1995) Application of electrochemical impedance spectroscopy to study the degradation of coil-coated steel: Influence of chemical pre-treatment. Proceedings of Galvatech, 95, 163-170. -doi:10.1134/s003602441299010x
  6. Thompson I. and Campbell D. (1994). Interpreting nyquist responses from defective coatings on steel substrates. Corrosion Science, 36 (1), 187-198. -https://doi.org/10.1016/0010-938X(94)90119-8
  7. Bernard A. Boukamp (1989) Equivalent Circuit. Version 3.97, Faculty of Chemical Technology, University of Twente, 52.
  8. Levie R. (2015) The influence of surface roughness of solid electrodes on electrochemical measurements. Electrochimica Acta. 10, 113-130. - https://doi.org/10.1016/0013-4686(65)87012-8
  9. Armstrong R.D. and Burnham R.A. (2016). The effect of roughness on the impedance of the interface between a solid electrolyte and a blocking electrode. Journal of Electroanalytical Chemistry. 72. 257-266.  -https://doi.org/10.1016/S0022-0728(76)80312-9
  10. Kerner Z. And Pajkosy T. (1998). Impedance of rough capacitive electrodes: the role of surface disorder. Journal oj Electroanalytical Chemistry. 448, 139-142. -https://doi.org/10.1016/S0022-0728(98)00025-4