Gallol-based constant underwater coating adhesives for severe aqueous conditions

Hydrogels for underwater adhesion: adhesion mechanism, design strategies and applications

“…11C), which prevents the occurrence of ship oil spills from the source, and indirectly protects ships from oil pollution, which can be used in the eld of ship leakage prevention. 175 When faced with harsh underwater environments (high content of acids, alkalis and salts), the adhesion properties of underwater coatings can be severely damaged, causing peeling phenomena, exposing ships to harsh environments and accelerating ship corrosion. Therefore, coatings that can survive in harsh environments have been developed, [177][178][179][180] and they can still show excellent adhesion and oleophobic properties in harsh environments to protect ships.…”

“…11 (A) LBL self-assembly technology used to layer self-assembly coatings onto the hull. 175 This journal is © The Royal Society of Chemistry 2022 phase. 189 Once the underwater coating is applied to the metal mesh, only water is allowed to pass through the coating and the metal mesh, and since the density of water is greater than that of oil, the oil/water mixture can be separated only by gravity.…”

“…11A). 175 This technology not only improves the adhesion of the coating, but also makes the coating have the mortar structure and high surface energy of pearl shells (Fig. 11B), 176 so that the hull can resist the corrosion of oil pollution and the impact of waves in the sea.…”

“…Fig.11 (A) LBL self-assembly technology used to layer self-assembly coatings onto the hull 175. Figure reproduced with permission from Elsevier.…”

Construction and Curing Behavior of Underwater In Situ Repairing Coatings for Offshore Structures

“…The catechol-based acrylate polymer developed by Wilker et al [17] was able to achieve a bonding strength of 3 MPa on aluminum underwater. Yang et al [18] also prepared a novel underwater adhesive coating based on a layer-by-layer self-assembly technique. The coatings applied to the alloy surface exhibited an underwater adhesion strength of over 200 kPa for 1 day and more than 100 kPa for 60 days.…”