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Self-repairing silicone coating for marine anti-biofouling

Abstract

Marine biofouling is one of the most challenging problems today. Silicone polymer based coatings with low surface energy and elastic modulus can effectively inhibit or release biofouling. However, their non-repairable property and poor antifouling ability on static conditions limit their applications. Here, we report a self-repairing coating consisting of poly(dimethylsiloxane) based polyurea (PDMS-PUa) and a small amount of organic antifoulant (4,5-dichloro-2-n-octyl-4-isothiazolin-3-one) (DCOIT). The coating can completely recover itself from damaging in mechanical properties either in air or artificial seawater at room temperature. Such recovery can be accelerated at a higher temperature. Moreover, the release rate of DCOIT is almost constant and can be regulated by its concentration. The six-month marine field tests demonstrate that the system has a good antifouling/fouling release performance even on static conditions.

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Publication details

The article was received on 16 Jun 2017, accepted on 05 Jul 2017 and first published on 06 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA05241C
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Self-repairing silicone coating for marine anti-biofouling

    C. Liu, C. Ma, Q. Xie and G. Zhang, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA05241C

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