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51318-11144-An innovative long life superhydrophobic/water repellent coating system for offshore application

Picture for An innovative long life superhydrophobic/water repellent coating system for offshore application
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This study reports the performance of a volumetric water repellent topcoat and a two coat system composed of the water repellent topcoat on the top of an epoxy zinc primer.

Product Number: 51318-11144-SG
Author: David Morton / Liliana Madaleno / Benjamin Chaloner-Gill / Martin Quintero / Amal Al-Borno
Publication Date: 2018
Industries: Maritime , Coatings and Linings
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$20.00
$20.00

In the coatings industry, the development of a durable water repellent / superhydrophobic coating is of high interest to provide greater protection from water/moisture, therefore reducing steel corrosion especially for offshore applications. This study reports the performance of a volumetric water repellent topcoat and a two coat system composed of the water repellent topcoat on the top of an epoxy zinc primer. The anti-corrosive performance of the water repellent coating was evaluated by salt spray tests and the volumetric superhydrophobic effect by contact angle analyses. The preliminary results show a significant improvement on the anticorrosive properties compared to a standard coating material. The two coat system was evaluated up to 6000 hours in salt spray test; 7200 hours in blister box and sea water immersion test, and up to 10080 hours in ageing resistance test. The thermal crack resistance and flexibility of the system were also tested. The two coat system has shown excellent anti-corrosive properties for extended times of exposure and outstanding mechanical performance, making it a suitable candidate for areas exposed to aggressive environments such as offshore platforms.

Key words: Water repellent topcoat, anti-corrosive properties, mechanical robustness

In the coatings industry, the development of a durable water repellent / superhydrophobic coating is of high interest to provide greater protection from water/moisture, therefore reducing steel corrosion especially for offshore applications. This study reports the performance of a volumetric water repellent topcoat and a two coat system composed of the water repellent topcoat on the top of an epoxy zinc primer. The anti-corrosive performance of the water repellent coating was evaluated by salt spray tests and the volumetric superhydrophobic effect by contact angle analyses. The preliminary results show a significant improvement on the anticorrosive properties compared to a standard coating material. The two coat system was evaluated up to 6000 hours in salt spray test; 7200 hours in blister box and sea water immersion test, and up to 10080 hours in ageing resistance test. The thermal crack resistance and flexibility of the system were also tested. The two coat system has shown excellent anti-corrosive properties for extended times of exposure and outstanding mechanical performance, making it a suitable candidate for areas exposed to aggressive environments such as offshore platforms.

Key words: Water repellent topcoat, anti-corrosive properties, mechanical robustness

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