Stimuli-responsive polyurethane-urea polymer for protective coatings and dampening material
Intrinsic self-healing coatings have been drawing more and more attention over recent years. A self-healing coating that is able to maintain its original appearance and performance after damage is attractive for a huge scope of applications. This article reports the synthesis of a polyurethane-urea coating with 1-(2-aminoethyl)-imidazolidin-2-one (UDETA) units showing temperature- and moisture-triggered self-healing. Calorimetric and spectroscopic analyses give insight into the self-healing mechanism showing that the absorbed water is able to disturb inter- and intramolecular hydrogen bonds of the polymer chains and decrease the glass transition temperature of the polymer. Temperature-mediated self-healing can be performed from 80 up to 200°C. Aside from self-healing, the molecular dynamics in the polyurethane-urea polymer prove to be beneficial for damping applications as confirmed by dynamic mechanical analysis. Thus, the polymer system features properties that are useful for two different applications, namely in coatings with self-healing and corrosion protective properties and in dampening materials.
KeywordsSelf-healing Stimuli-responsive Coatings Corrosion Damping Smart material
K. Koschek gratefully acknowledges the financial support from the Bundesministerium fuer Bildung und Forschung (BMBF) through the NanoMatFutur Award (DuroCycleFVK 03XP0001).
- 1.Øystein Knudsen, O, Forsgren, A, Corrosion Control Through Organic Coatings, 2nd ed. CRC Press Taylor & Francis Group, Florida, 2017Google Scholar
- 2.NACE International Today, International Measures of Prevention, Application, and Economics of Corrosion Technologies Study. Houston, TX (2016)Google Scholar
- 7.Adler-Werk Lackfabrik GmbH & Co KG, Selbstheilende Lacktechnologie von ADLER: “So etwas gelingt vielleicht alle 10 Jahre”, available at: http://www.adler-lacke.com/de/newspresse/selbstheilende-lacktechnologie-von-adler-so-etwas-gelingt-vielleicht-alle-10-jahre-1558/, accessed 8 January 2018
- 9.Research Society for Pigments and Coatings (FPL e.V.), funded via AiF (97 EN/EN09619/12), “Self-repairing Coatings for Metals and Composites.” SelfRepCoat, CORNET-Project (2015)Google Scholar
- 10.MEYER WERFT GmbH, “Development and Testing of Microcapsules for Self-healing Coatings in Maritime Environments.” ThroughLife EU-FP7, grant agreement no 265831 (2011–2014)Google Scholar
- 11.Arkema, Self-healing elastomer enters industrial production, available at: https://www.arkema.com/en/media/news/news-details/Self-healing-elastomer-enters-industrial-production/, accessed 8 January 2018
- 12.SupraPolix BV, available at: http://www.suprapolix.com/pages/polymers, accessed 8 January 2018
- 14.Montarnal, D, “Use of Reversible Covalent and Non-covalent Bonds in New Recyclable and Reprocessable.” Université Pierre et Marie Curie, Paris (2011)Google Scholar
- 21.Symietz, D, Leon, J, Pinel, JM, “Innovative Sprayable Vibration-Damping Coatings.” AutoTechnol., 2 (5) 76–79 (2002)Google Scholar