Epoxy antirust ship bottom coating (2K) for ship hull steel priming.
Above-waterline priming; can coat ship bottoms.
Mix 30:3; pot life 4 h.
Compatible with epoxy and polyurethane topcoats.
Overview
Two-component epoxy anti-rust coating for steel hulls and marine structures where mechanical strength and chemical stability are required.
Film emphasizes wetting properties, corrosion resistance, and mechanical durability for ship hull priming above and below waterline.
Composition
Part A: epoxy resin with special anti-rust pigments, fillers, solvent, and additives.
Part B: amine adduct curing agent.
Typical uses
Anti-rust primer for ship hulls above waterline and as bottom anti-rust coating.
Technical data (typical)
Appearance: iron red.
Theoretical consumption: 0.16 kg/m² at 50 µm DFT (loss not included).
Density: 1.35 kg/L.
Drying time (25℃): surface dry 2 h; hard dry 24 h; full cure 7 d.
Application data (25°C)
Mixing ratio (Part A:Part B): 30:3.
Induction time: 5 min at 25℃.
Pot life: 4 h at 25℃.
Application methods: airless spray, brush, roller.
Thinner: epoxy thinner, 2–8% (higher for air spray/roller).
Recoat interval: min 24 h; max 7 d.
Recommended coats/DFT: 1 coat 60–80 µm (spray); brush/roller 1 coat 35–50 µm.
Recommended subsequent coats: epoxy topcoat; polyurethane topcoat; acrylic, chlorinated rubber, or chlorinated ether topcoats.
Surface preparation
Steel: blast-clean or spray-clean to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.
System compatibility / packing / storage
System compatibility: primer under epoxy, polyurethane, acrylic, chlorinated rubber, or chlorinated ether topcoats for marine applications.
Construction conditions: RH ≤85%; 5–35℃; avoid rain/snow, strong wind (>6.7 m/s), heavy fog, intense sunlight.
Storage: dry, cool, ventilated warehouse away from fire sources; avoid strong sunlight; no outdoor stacking; shelf life 12 months.
Packing: Part A 30 kg; Part B 3 kg.
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General-purpose use for bridges, towers, gas holders, oil tanks, oil/gas pipelines, and industrial steel structures.
High zinc dust content with stated water/oil/media resistance and welding/cutting resistance.
Sa 3 surface preparation (not lower than Sa 2.5); touch dry 10 min at 25°C, RH 70–85%.
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For blast-cleaned steel; surface preparation Sa 3 (not lower than Sa 2.5) is specified.
Fast drying at 25°C, RH 70–85%: touch dry 10 min; hard dry 2 h; cured 24 h.
Mix ratio 28:7; thinner X-11 inorganic zinc thinner (5–20%); compatible with epoxy/PU coating systems.
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For corrosion protection of steel structures and concrete surfaces.
Water and corrosion resistance with strong adhesion (as described).
Mix ratio 24:3; recoat 24 h–7 d (25°C).
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For ports/docks, heavy structures, mining machinery, power machinery plants, and water conservancy steelwork.
Zinc phosphate anti-rust pigment system with stated water and salt water resistance.
Mix ratio 7:1; theoretical consumption 0.12 kg/m² at 50 µm DFT.
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