Advanced Marine Corrosion Control and Coating Technologies: Electrochemical Preservation, Regulatory Frameworks, and Architectural Surface Protection
Marine Asset Preservation
Electrochemical & Coating Technology Research
1. Hydrodynamic Impact
Ship preservation is not just about longevity; it determines fuel efficiency and GHG emissions. Viscous drag spikes exponentially as the hull degrades.
2. Electrochemical Systems
SACP (Passive)
Strategic use of Zinc/Aluminum sacrificial anodes to neutralize galvanic corrosion between the steel hull and bronze propeller.
- • Consumable metal blocks welded to the hull.
- • Replacements required every 36-60 months.
- • Critical for stern tubes and bilges.
ICCP (Active)
Computerized DC current system using Titanium anodes and Reference electrodes to monitor hull potential.
Critical Safety Factor
Requires 1m dielectric shield to prevent "Cathodic Disbondment" caused by alkaline buildup.
Hull Grooming Technology
Biocide Release Mechanics
SPC Technology
Self-Polishing Copolymers utilize continuous chemical hydrolysis for a constant release rate, independent of vessel speed.
Foul-Release (FRC)
Silicone/Fluoropolymer biocide-free coatings. Relies on ultra-low surface energy to prevent protein adhesion.
AFS Convention Compliance
TBT Prohibition
Banned since 2008. Caused "Imposex" (hormonal sterilization) in sea snails and shell thickening in oysters at parts per trillion.
Cybutryne Ban (2023)
Herbicide targeting marine flora. Inhibits electron transport in photosynthesis, threatening the base of the food web.
4. Architectural Dichotomy
Vertical Superstructure
Priority: UV Resilience & Aesthetics
Uses Aliphatic Polyurethanes. Epoxy resins "chalk" under UV radiation due to ether bond cleavage. Urethanes maintain gloss and shed salt spray.
Horizontal Decks
Priority: Friction & Impact Resistance
High-build Epoxies blended with Quartz/AlO3 aggregates for slip resistance. Matte finish to mitigate blinding solar glare for the bridge crew.
