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The physical chemistry of organic coatings revisited—viewing coatings as a materials scientist

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Abstract

Modern organic coatings are complex materials which must be observed and interpreted from the viewpoint of what has become known as Materials Science. Paints, as most of us first learned to name organic coatings, were originally designed and conceived as art forms. Visual artists developed their own applied colorants; part of an artist’s success depended on these skills (consider Leonardo da Vinci). Today, one’s skills as a materials scientist are perhaps the most crucial attributes of the true coatings scientist. Considering pigmented organic coating as random heterogeneous composite materials was the key to my research group’s contributions in improving the understanding of pigment volume concentrations (PVC) and critical PVC effects in coatings. Seeking to develop and improve electrochemical materials characterization techniques for measuring and predicting the corrosion protective properties of coatings has driven our research at North Dakota State University (NDSU) in this area. Analyzing the performance of protective coatings for exterior bronze statues and viewing these coatings from the materials requirements of the art conservator has directed our activities in conservation science. The use of the methods of modern electrochemical materials science has been the key to our development of Mg-rich primers for entirely Cr-free corrosion protection of aircraft alloys. Our work on developing methods to perform material measurements directly on coatings during their field use has directed our recent studies of embedded sensors in coatings. Our work in these areas will be reviewed and current results presented. Forecasts of future developments in these and other areas of coatings science will be presented, extrapolating from present developments in materials science. Incorporating materials concerns, especially the methods and concepts of nanomaterials science, into coatings science will be of paramount importance to future research and development in coatings.

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Notes

  1. National Center for Preservation Technology and Training, National Park Service, Department of Interior, 645 College Avenue, Natchitoches, LA 71457.

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Acknowledgments

I would like to thank all of those in the coatings industry that helped and encouraged me in my studies of coatings, especially Gar Schurr, John Petty, John Gardon, Charles Kumins, Juergen Braun, and Percy Pierce. The help and advice of Werner Funke of the German Paint Research Institute (FPL) and the U. Stuttgart have been most important to me, both when I was in industry as well as my time in academia. Further, the interactions I have had with Prof. Pier Luigi Bonora of the University of Trento, Italy and Dr. Marcel Piens of the Coating Research Institute (CoRI) in Limlette, Belgium have played an important role in my academic career. The significance of my long-term partnership at NDSU with Prof. Dennis Tallman has been described above, but it has been so noteworthy that it again must be acknowledged. Further, my interactions with Profs. Stuart Croll and Dean Webster of the Dept. of Coatings and Polymeric Materials since they came to NDSU have been crucial to my research. Also, I would like to thank the Office of Naval Research (ONR) and Program Manager John Sedriks for helping my research group at NDSU to start our successful research program on corrosion protective coatings. Further, I would like to thank the Air Force Office of Scientific Research (AFOSR), and Program Managers Maj. Hugh DeLong, Lt. Col. Paul Trulove, and our current Program officer, Maj. Jennifer Gresham, for the support, guidance and encouragement they have provided in our research program. Finally, I acknowledge the support of the late Dr. Michael Donley of the Coatings Group in the Air Force Materials Lab at WPAFB, OH who gave so much help and encouragement to our program at NDSU.

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  1. Department of Coatings & Polymeric Materials, Center for Surface Protection, North Dakota State University, Fargo, ND, 58105, USA

    Gordon Bierwagen

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Correspondence to Gordon Bierwagen.

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This paper was presented as the Mattiello Memorial Lecture at the 2007 FutureCoat! Conference, sponsored by Federation of Societies for Coatings Technology, October 3–5, 2007, in Toronto, Ont., Canada.

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Bierwagen, G. The physical chemistry of organic coatings revisited—viewing coatings as a materials scientist. J Coat Technol Res 5, 133–155 (2008). https://doi.org/10.1007/s11998-007-9066-4

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