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Durability Assessment of Foul-release Coatings

Durability Assessment of Foul-release Coatings
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The Bureau of Reclamation (USBR) is currently investigating the feasibility of using foul-release coatings to mitigate impacts caused by macro-fouling organisms such as zebra and quagga mussels.  Durability of these coatings must be considered as a factor in determining overall life cycle costs.  To this end, the Bureau of Reclamation has developed testing protocols to evaluate the durability of foul-release coatings with respect to abrasion, erosion resistance and the ability to overcoat existing equipment.  

Product Number: 41212-715-SG
Author: David Tordonato, Dr. Allen Skaja
Publication Date: 2012
Industries: Coatings , Corrosion Monitoring and Control , Coatings and Linings
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$20.00
$20.00

The Bureau of Reclamation (USBR) is currently investigating the feasibility of using foul-release coatings to mitigate impacts caused by macro-fouling organisms such as zebra and quagga mussels.  Durability of these coatings must be considered as a factor in determining overall life cycle costs.  To this end, the Bureau of Reclamation has developed testing protocols to evaluate the durability of foul-release coatings with respect to abrasion, erosion resistance and the ability to overcoat existing equipment.  This paper details each testing methodology and presents results.  The tests show a wide variation in the durability of commercially available foulrelease coatings.  In order to estimate the expected product life for specific service environments, the results are compared to several benchmark coatings which have an extensive service history within Reclamation. These results show that silicone coatings have the potential to work under certain conditions where floating debris is not present.  Silicone epoxy and polyurethane systems are more durable but less resistant to erosion damage caused by entrained particulates such as sand.  None of the coating systems are recommend as an overcoat material for coal tar enamel.

The Bureau of Reclamation (USBR) is currently investigating the feasibility of using foul-release coatings to mitigate impacts caused by macro-fouling organisms such as zebra and quagga mussels.  Durability of these coatings must be considered as a factor in determining overall life cycle costs.  To this end, the Bureau of Reclamation has developed testing protocols to evaluate the durability of foul-release coatings with respect to abrasion, erosion resistance and the ability to overcoat existing equipment.  This paper details each testing methodology and presents results.  The tests show a wide variation in the durability of commercially available foulrelease coatings.  In order to estimate the expected product life for specific service environments, the results are compared to several benchmark coatings which have an extensive service history within Reclamation. These results show that silicone coatings have the potential to work under certain conditions where floating debris is not present.  Silicone epoxy and polyurethane systems are more durable but less resistant to erosion damage caused by entrained particulates such as sand.  None of the coating systems are recommend as an overcoat material for coal tar enamel.

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