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The role of basecoat pigmentation on the biological resistance of an automotive clearcoat

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Abstract

This work aims to study the effect of various natural and artificial biological compounds on an automotive acrylic/melamine clearcoat applied over silver and black basecoats containing pigments. The visual performance of the coating system was evaluated at different aging conditions. To this end, analytical techniques including optical microscopy, scanning electron microscopy, gonio-spectrophotometery, gloss measurement, ATR-FTIR spectroscopy, and DMTA analysis were utilized to investigate the optical and mechanical response of the system upon exposure to the biological materials. Results indicated different effects produced by gums and bird droppings on both silver and black systems at all aging processes. In addition, a more severe effect of biological attacks was observed on the clearcoat samples applied on the black basecoat which had experienced postaging conditions. However, it was found that pancreatin and bird droppings influence the coating systems more severely compared to the natural and synthetic Arabic gums.

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References

  1. Nguyen, T, Martin, JW, Byrd, E, Embree, N, “Relating Laboratory and Outdoor Exposure of Coatings III. Effect of Relative Humidity on Moisture-Enhanced Photolysis of Acrylic–Melamine Coatings.” Polym. Degrad. Stab., 77 1–16 (2002)

    Article  CAS  Google Scholar 

  2. Gerlock, JL, Dean, MJ, Kornlskl, TJ, Bauer, DR, “Formaldehyde Release from Acrylic/Melamine Coatings During Photolysis and the Mechanism of Photoenhanced Cross-Link Hydrolysis.” Ind. Eng. Chem. Prod. Res. Dev., 25 449–453 (1986)

    Article  CAS  Google Scholar 

  3. Osterhold, M, Patrick, G, “Influence of Weathering on Physical Properties of Clearcoats.” Prog. Org. Coat., 41 177–182 (2001)

    Article  CAS  Google Scholar 

  4. Nichols, ME, Gerlock, JL, Smith, CA, Darr, CA, “The Effects of Weathering on the Mechanical Performance of Automotive Paint Systems.” Prog. Org. Coat., 35 153–159 (1999)

    Article  CAS  Google Scholar 

  5. Yari, H, Moradian, S, Ramazanzade, B, Kashani, A, Tahmasebi, N, “The Effect of Basecoat Pigmentation on Mechanical Properties of an Automotive Basecoat/Clearcoat System During Weathering.” Polym. Degrad. Stab., 94 1281–1289 (2009)

    Article  CAS  Google Scholar 

  6. Yari, H, Mohseni, M, Ramezanzadeh, B, “Comparisons of Weathering Performance of Two Automotive Refinish Coatings: A Case Study.” J. Appl. Polym. Sci., 111 2946–2956 (2009)

    Article  CAS  Google Scholar 

  7. Ramazanzade, B, Moradian, S, Yari, H, Kashani, H, Niknahad, M, Chadle, H, et al. “The Effect of Basecoat Pigmentation on Weathering Performance of an Acrylic–Melamine Basecoat/Clearcoat Automotive Finish.” Proc. Automotive Adhesive, Sealants and Coatings, Stuttgart, Germany, 2008

  8. Gaszner, K, Neher-Schmitz, H, Kuntz, T, The Effects of Bird Droppings, Insects and Tree Resins on Automotive Coatings, pp. 1–4. A report by Forschungsinstitut for Pigment and Lake eV (FPL), Global Automotive Manufacturing & Technology (2003)

  9. Cassius, VS, Jefferson, S, Porto, DJT, Etelvino, JHB, “Automotive Clearcoat Damage Due to Oviposition of Dragonflies.” J. Appl. Polym. Sci., 75 1632–1639 (2000)

    Article  Google Scholar 

  10. Ramezanzadeh, B, Mohseni, M, Yari, H, “An Evaluation of an Automotive Clearcoat Performance Exposed to Bird Droppings Under Different Testing Approaches.” Prog. Org. Coat., 66 149–160 (2009)

    Article  CAS  Google Scholar 

  11. Yari, H, Mohseni, M, Ramezanzadeh, B, “Use Analytical Techniques to Reveal the Influence of Chemical Structure of Clearcoat on Its Biological Degradation Caused by Bird-Droppings.” Prog. Org. Coat., 66 (3) 281–290 (2009)

    Article  CAS  Google Scholar 

  12. Mor, EHA, “Ceramic Infrared Emitters.” Technical Manual, Project No. 95NK17113A, File No. E-181581

  13. Thomas, RK, “High Emissivity Coatings for Improved Performance of Electric Arc Furnaces.” Presented at AISTech 2005 Iron and Steel Technology Conference, Charlotte, North Carolina, May, 2005

  14. Bauer, DR, “Crosslinking Chemistry and Network Structure in Organic Coatings. II. Effect of Catalyst on Cure of Melamine of Formaldehyde/Acrylic Polyol.” J. Appl. Polym. Sci., 18 2015–2025 (1980)

    CAS  Google Scholar 

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Acknowledgments

The authors would like to thank Iran Khodro Company and Paint Shop 1 for providing the coating samples.

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Authors and Affiliations

  1. Polymer Engineering and Color Technology Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran

    B. Ramezanzadeh, M. Mohseni & H. Yari

Authors
  1. B. Ramezanzadeh
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  2. M. Mohseni
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  3. H. Yari
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Correspondence to M. Mohseni.

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Ramezanzadeh, B., Mohseni, M. & Yari, H. The role of basecoat pigmentation on the biological resistance of an automotive clearcoat. J Coat Technol Res 7, 677–689 (2010). https://doi.org/10.1007/s11998-010-9254-5

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