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Wednesday, 30 September 2020
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Raw materials & technologies, Applications

UV-curable alkyd coating with self-healing ability

Tuesday, 15 October 2019

The aim of a new study is to produce UV-curable alkyd coating with self-healing ability.

UV-curable palm oil-based alkyd coating is a form of environmentally friendly coating that utilises vegetable oil as one of its main raw materials. Source: Orientierungslust / Pixabay.
UV-curable palm oil-based alkyd coating is a form of environmentally friendly coating that utilises vegetable oil as one of its main raw materials....

The coating is a form of environmentally friendly self-healing coating owing to its UV curing ability and also due to the fact that the binder is produced using a significant amount of a renewable resource, palm oil. The self-healing alkyd coating is comprised of microcapsules containing healing agent, embedded into alkyd coating matrix.

Self-healing process within ten minutes

Diglycidyl ether bisphenol-A-based epoxy (EPON828) and pentaerythritol tetrakis (3-mercaptopropionate) were chosen as the healing agents due to their compatibility with the matrix. Self-healing process of the coating takes place within ten minutes after the coating was intentionally damaged. The efficacy of the self-healing ability of the coating was investigated using electrochemical impedance spectroscopy measurement.

The study is published in: Journal of Coatings Technology and Research  March 2019, Volume 16, Issue 2, pp 465–476.

Image source: Pixabay

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