Case study: marine equipment application

Case study developed for an offshore application. An effective solution was needed that would provide long-lasting resistance under these conditions...

The following case study was developed in South Africa for an offshore application. PRIMAPOX 6021 primer and PUR 800-G polyurethane binder from Disolac, a certified system with C-5 High rating according to standard ISO 12944, which determines the degree of corrosion, was recommended. This system has been successfully tested in neutral salt spray (NS) resistant to 1440h and condensation water atmosphere (CWA) resistant to 720h.

Challenge posed

An effective solution was needed to provide long-term resistance in equipment exposed to offshore environmental conditions, such as salt spray and water condensation. Previously, other solutions had been tried without a satisfactory result. 

Proposed solution

Professional painters applied over 70 gallons of PRIMAPOX 6021 and PUR 800-G to the equipment. The total paint applied was 0.23 mm (9 mils) thick, distributed in 0.15 mm (6 mils) of PRIMAPOX 6021 applied by airless spray gun in two coats, achieving 0.07 mm (3 mils) per coat. This epoxy primer provided the corrosion resistance that is crucial for offshore use of the equipment.

After allowing the second coat of PRIMAPOX 6021 epoxy primer to dry for 3 hours, PUR 800-G was applied using airless equipment, achieving 0.03 mm (1.5 mils) per coat. PUR 800-G polyurethane provided the gloss finish, UV resistance and chemical resistance that the application required.

Step 1

Step 1 PRIMAPOX 6021
2 coats of Primapox 6021 epoxy primer to cover the majority of surface imperfections

Step 2

Case study: marine equipment application | Crom Campus
Pur 800-G gave it the glossy finish and protection to withstand more than 15 years at sea

Case study: marine equipment application | Crom Campus

Result obtained

With the combination of PRIMAPOX 6021 primer and PUR 800-G polyurethane from Disolac, the necessary results required by the customer were achieved: protecting the equipment from corrosion caused by the environmental conditions at sea.

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