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EN
Self-healing polyurea coating resists cavitation and corrosion in offshore environments
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European Coatings
In a study published in Progress in Organic Coatings (Volume 200, March 2025), researchers present a multifunctional polyurea coating system, developed for dynamic components in offshore engineering.
The composite, designated H-DAPU, incorporates hydrogen-bonded, trifluoromethoxyphenyl isocyanate-functionalised reduced graphene oxide (HRGO), enabling simultaneous cavitation resistance, corrosion protection and photothermal self-healing.
The addition of HRGO not only reinforced the mechanical properties but also created a dense barrier structure that enhanced corrosion resistance.
Electrochemical impedance spectroscopy showed that even after 10 days in 3.5 wt% NaCl solution, the coating maintained a low-frequency impedance value of 3.2 × 10⁷ Ω·cm²—indicating long-lasting corrosion resistance.
Polyurea/hydrogen-bonded reduced graphene oxide composite coating with self-repairing functions for applications of anti-cavitation and anti-corrosion, Progress in Organic Coatings, Volume 200, March 2025, 108979.
['offshore'
'selfhealing'
'hdapu'
'environments'
'cavitation'
'coatings'
'coating'
'technical'
'resists'
'system'
'polyurea'
'volume'
'reduced'
'corrosion'
'selfrepair'
'resistance']