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Wednesday, 16 October 2019
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Raw materials & technologies, Applications

A review on protective polymeric coatings for marine applications

Monday, 5 August 2019

The main objective of a new review is to discuss the recent research on polymer-based surface coatings contributing to the protection against marine biofouling.

The review summarises the recent research on polymer-based surface coatings contributing to the protection against marine biofouling. Source: William Richardson – stock.adobe.com.
The review summarises the recent research on polymer-based surface coatings contributing to the protection against marine biofouling. Source: Willi...

A need for studies on the mathematical behaviour of such coatings is emphasised, composed of quantitative evaluation of foul-release performance of coatings using mathematical equations of the concerned parameters. Apart from the synthesis of protective polymeric coatings, understanding the relationship between characteristics of coating materials and accompanying foul-release and antifouling mechanism is important. In this regard, efforts have been made to equally evaluate, simulate, and measure the appropriate performance of the coatings.

Adhesion as a key prerequisite

By examining the physicochemical and mechanical properties of the polymers, adhesion behavior has been found to be one of the prerequisites for the success of polymeric coatings for marine applications. The potential development of a broad spectrum of methods used to evaluate the foul-release performance of polymeric coatings depending on adhesion behavior of fouling organisms with the coatings has been discussed. From the analysis of the factors affecting degradation of coatings, environmental interference is declared a key factor for complete degradation of polymeric coatings.

Improving polymeric coatings for ship hulls

The review opens up new research directions to improve the adhesion performance of polymeric coatings for ship hulls designed with tunable viscoelasticity by the incorporation of elastomeric polymers (like polydimethylsiloxane) into stiff polymers (like epoxy resins) with and without the utilisation of additives, modifiers, and nano-fillers. In addition, it provides methods to improve the foul-release performance of such coatings that work on adhesion behaviour of biofouling species attached to the coating surface.

The study is published in: Journal of Coatings Technology and Research  March 2019, Volume 16, Issue 2, pp 307–338.

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