This invention provides an
underwater brushable, fast-curing
epoxy anti-
corrosion coating, comprising component A and component B. By weight, component A comprises 50-60 parts
epoxy resin, 18-30 parts pigments and fillers, 0.2-1.0 parts
defoamer, 0.3-0.8 parts dispersant, 0.1-0.5 parts leveling agent, 1-3 parts thixotropic agent, and 5-8 parts
molecular sieve. Component B comprises 30-40 parts modified amine curing agent, 1-2 parts accelerator, and 1-3 parts
silane coupling agent. This invention uses a
quaternary ammonium salt-
organosilicon dual-modified amine curing agent in component B to achieve a synergistic effect of electrostatic drainage and hydrophobic barrier; it incorporates
molecular sieve activation
powder as a physical dehydrating agent in component A; and it introduces nano-
zinc oxide whiskers as an
underwater toughening and reinforcing phase in component B. Components A and B work together to solve the problem of water phase interference during
underwater construction.