TY - JOUR
T1 - Self-healing microcapsule-thickened oil barrier coatings
AU - Lim, Alane Tarianna O.
AU - Cui, Chenlong
AU - Jang, Hee Dong
AU - Huang, Jiaxing
N1 - Funding Information:
The work was supported by the Office of Naval Research (ONR N000141612838). Jiaxing Huang thanks the support and research freedom offered by a JITRI International Research Fellow Award and the Humboldt Research Award. Alane Tarianna O. Lim thanks the National Science Foundation for a Graduate Research Fellowship. Hee Dong Jang was supported by the Basic Research Project of the Korea Institute of Geoscience and Mineral Resources, funded by the Ministry of Science, ICT and Future Planning. We thank Dr. J. Wu for help with TEM and C. Luo, P. He, R. H. Jhang, and Professor C. H. Chen for their assistance and helpful discussions in electrochemical tests.
Publisher Copyright:
Copyright © 2019 Alane Tarianna O. Lim et al.
PY - 2019
Y1 - 2019
N2 - Low-viscosity oils could potentially act as self-healing barrier coatings because they can readily flow and reconnect to heal minor damage. For the same reason, however, they typically do not form stable coatings on metal surfaces. Increasing viscosity helps to stabilize the oil coating, but it also slows down the healing process. Here, we report a strategy for creating highly stable oil coatings on metal surfaces without sacrificing their remarkable self-healing properties. Low-viscosity oil films can be immobilized on metal surfaces using lightweight microcapsules as thickeners, which form a dynamic network to prevent the creep of the coating.When the coating is scratched, oil around the opening can rapidly flow to cover the exposed area, reconnecting the particle network. Use of these coatings as anticorrosion barriers is demonstrated.The coatings can be easily applied on metal surfaces, including those with complex geometries, both in air or under water, and remain stable even in turbulent water.They can protectmetal in corrosive environments for extended periods of time and can self-heal repeatedly when scratched at the same spot. Such a strategy may offer effectivemitigation of the dangerous localized corrosion aggravated byminor imperfections or damage in protective coatings, which are typically hard to prevent or detect, but can drastically degrade metal properties.
AB - Low-viscosity oils could potentially act as self-healing barrier coatings because they can readily flow and reconnect to heal minor damage. For the same reason, however, they typically do not form stable coatings on metal surfaces. Increasing viscosity helps to stabilize the oil coating, but it also slows down the healing process. Here, we report a strategy for creating highly stable oil coatings on metal surfaces without sacrificing their remarkable self-healing properties. Low-viscosity oil films can be immobilized on metal surfaces using lightweight microcapsules as thickeners, which form a dynamic network to prevent the creep of the coating.When the coating is scratched, oil around the opening can rapidly flow to cover the exposed area, reconnecting the particle network. Use of these coatings as anticorrosion barriers is demonstrated.The coatings can be easily applied on metal surfaces, including those with complex geometries, both in air or under water, and remain stable even in turbulent water.They can protectmetal in corrosive environments for extended periods of time and can self-heal repeatedly when scratched at the same spot. Such a strategy may offer effectivemitigation of the dangerous localized corrosion aggravated byminor imperfections or damage in protective coatings, which are typically hard to prevent or detect, but can drastically degrade metal properties.
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U2 - 10.34133/2019/3517816
DO - 10.34133/2019/3517816
M3 - Article
C2 - 31549058
AN - SCOPUS:85078802162
VL - 2019
JO - Research
JF - Research
SN - 2639-5274
M1 - 3517816
ER -