Why Polyurea Fails on Offshore Aquaculture Farms | 25+ Years of Protection
One of the biggest threats faced by offshore fish farms is corrosion. The underlying causes are well known and will not be repeated here. To achieve long-term and reliable protection, there are two main solutions: polyurea, primarily used for waterproofing, and anti-corrosion coatings.
Our current client initially adopted the polyurea solution. However, in actual application, it presented serious issues—local damage quickly led to widespread cracking. To resolve this, they switched to our industrial anti-corrosion coating system.
The structure consists of two parts: connecting rods and spherical heads. The connecting rods are relatively simple and easy to protect. However, the spherical heads are irregular in shape, requiring coverage of five surfaces, and are prone to sagging during coating. To address this, we used a Solvent-Free Graphene anti-corrosion coating. Thanks to its excellent adhesion and leveling properties, it effectively solved the construction challenges on complex surfaces.
The system is designed for a service life of over 25 years, providing long-term and stable protection for the client.