Destruction of Epoxy Coatings under the Influence of Climatic Factors

Abstract:

The paper presents investigation results of climatic as well as environmental factors influence on surface state of three-layer epoxy coatings. A three-year investigation documented substantial destruction of coating surface layers. In particular, a significant increase of aged coating surface roughness, evaluated on the basis of Ra and Rz parameters, was observed. Studies made with SEM corroborated a delamination as well as pigment and filler crumbling from surface layers of coatings. In the final period of ageing craters and superficial cracks appeared in the coating structure. Destruction of aged coating surfaces contributed to their gloss loss by over 98% (for light incidence angle α = 60^o) decreasing in this way coating decorative properties.

• Periodical: Solid State Phenomena (Volume 199)
• Pages: 581-586
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.199.581
• Online since: March 2013
• Authors: Danuta Kotnarowska
• Keywords: Climatic Ageing, Epoxy Coating, Erosive Wear

References

[1] Z. Brojer, Z. Hertz, P. Penczek: Epoxy resins (Ed. WNT, Warsaw 1982) (in Polish).

[2] C. Decker, M. Balandier: Degradation of poli(vinyl chloride) by U.V. radiation – I. Kinetics and quantum yields. European Polymer Journal 1982, Vol. 18, p.1085÷1091.

DOI: 10.1016/0014-3057(82)90209-9

[3] C. Decker, S. Biry: Light stabilisation of polymers by radiation-cured acrylic coatings. Progress in Organic Coatings 1996, Vol. 29, p.81¸87.

DOI: 10.1016/s0300-9440(96)00630-3

[4] D. Kotnarowska: Kinetics of wear of epoxide coating modified with glass microspheres and exposed to the impact of alundum particles. Progress in Organic Coatings 1997, Vol. 31, p.325¸330.

DOI: 10.1016/s0300-9440(97)00090-8

[5] D. Kotnarowska: Influence of ambient factors on operational parameters of the protective epoxy coatings for technical equipment. Monograph No. 40 (Ed. of Radom Technical University 1999) (in Polish).

[6] D. Kotnarowska: Influence of ageing on mechanical properties of epoxy coatings, Advances in Corrosion Protection by Organic Coatings. Cambridge 1999, p.1÷10.

[7] D. Kotnarowska: Influence of ultraviolet radiation and aggressive media on epoxy coating degradation. Progress in Organic Coatings 1999, Vol. 37, p.149¸159.

DOI: 10.1016/s0300-9440(99)00070-3

[8] D. Kotnarowska: Types of wear processes of polymeric coatings. Monograph No. 60 (Ed. of Radom Technical University, Radom 2003) (in Polish).

[9] D. Kotnarowska: Influence of Ultraviolet Radiation on Erosive Resistance of Modified Epoxy Coatings. Solid State Phenomena 2006, vol. 113 (Mechatronic Systems and Materials), pp.585-588.

[10] D. Kotnarowska: Examination of dynamic of polymeric coatings erosive wear process. Materials Science 2006, Vol. 12, nr 2, pp.138-143.

[11] D. Kotnarowska: Influence of mechanical factors on surface state of acrylic coatings with nanofillers. Materials Science (Medźiagotyra) 2008, Vol. 14, No. 4, p.337÷340.

[12] D. Kotnarowska: Effect of nanofillers on wear resistance of polymer coatings. Solid State Phenomena 2009, vol. 144 (Mechatronic Systems and Materials II), pp.285-290.

[13] D. Kotnarowska, M. Wojtyniak: Influence of Ageing on Mechanical Properties of Epoxy Coatings. Solid State Phenomena 2009, Vol. 147-149, pp.825-830.

DOI: 10.4028/www.scientific.net/ssp.147-149.825

[14] D. Kotnarowska: Effect of Erosive Particles Velocity on the Intensity of Polymeric Coatings Wear. Solid State Phenomena 2010 (Diffusion and Defect Data) Vol. 165, p.91÷95.

DOI: 10.4028/www.scientific.net/ssp.165.91

[15] D. Kotnarowska: Epoxy coating destruction as a result of sulphuric acid aqueous solution action. Progress in Organic Coatings 2010, Vol. 67, Issue 3, p.324÷329.

DOI: 10.1016/j.porgcoat.2009.10.026

[16] D. Kotnarowska: Protective Coatings, Radom Technical University Ed. (2010) (in Polish).

[17] I. Narisava: Resistance of Polymer Materials. Ed. Chemistry, Moscow 1987 (in Russian).

[18] T. Nguyen, D. Bentz, E. Byrd: A study of water at the organic coating/substrate interface. Journal of Coatings Technology 1994, Vol. 66, No. 834, p.39¸50.

[19] T. Nguyen, D. Bentz, E. Byrd: Method for measuring water diffusion in a coating applied to a substrate. Journal of Coatings Technology 1995, Vol. 67, No. 844, p.37¸46.

[20] T. Nguyen, J. B. Hubbard, J. M. Pommersheim: Unified model for the degradation of organic coatings on steel in a neutral electrolyte. Journal of Coatings Technology 1996, Vol. 68, No. 855, p.45¸56.

[21] D. Y. Perera: On adhesion and stress in organic coatings. Progress in Organic Coatings 1996, Vol. 28, p.21¸23.

DOI: 10.1016/0300-9440(95)00585-4

[22] S. P. Rigby, R. S. Fletcher, S. N. Riley: Characterisation of porous solids using integraded nitrogen sorption and mercury porosimetry. Chemical Engineering Science 2004 , Vol. 59, pp.41-51.

DOI: 10.1016/j.ces.2003.09.017

[23] Paul A. Webb: An introduction to the physical characterization of materials by mercury intrusion porosimetry with emphasis on reduction and presentation of experimental data, Micromeritics Instrument Corp., Norcross, Georgia, (2001).

[24] B. Zyska: Problems of microbiological decomposition and microbiological corrosion of materials. Corrosion Protection 1994, No. 4, pp.82-86 (in Polish).