Polyurethane cooling tower damp-proof coating (2K) for waterproof anti-corrosion lining.
For cooling towers, sewage tanks, mines, underground buildings.
Primer ratio 24:3; topcoat ratio 18:3.
Pot life 4 h; min recoat 12 h.
Overview
Two-component polyurethane damp-proof coating system for waterproofing and anti-corrosion.
Provides strong adhesion, water resistance, damp-heat resistance, corrosion resistance, and mildew resistance.
Composition
Formulated with polyurethane resin, impermeability pigments, anti-rust pigments, reinforcing materials, solvents, and additives.
Cured with polyisocyanate; supplied in Part A & Part B packs.
Typical uses
Waterproof and anti-corrosion for concrete structures and steel structures, including cooling towers, sewage tanks, mines, and underground buildings.
Technical data (typical)
Appearance: Primer—brown; topcoat—grey.
Theoretical consumption: Primer 0.16 kg/m² at 50 μm DFT; topcoat 0.13 kg/m² at 40 μm DFT (excluding loss).
Density: Primer 1.4 kg/L; topcoat 1.2 kg/L.
Drying time (25°C): Surface dry 1 h; hard dry 24 h; fully cured 7 d.
Application data (25°C)
Mixing ratio (Part A:Part B): Primer 24:3; topcoat 18:3.
Induction time: 5 min.
Pot life: 4 h.
Application methods: Airless spray, brush, roller.
Thinner: X-7 polyurethane thinner; dilution 3–7%.
Recoat interval (25°C): Min 12 h; max unlimited.
Recommended coats / DFT: 1 coat 40–60 μm; brush/roller 1 coat 30–40 μm.
Surface preparation
Steel: blast/shot blast to Sa 2.5 or power-tool cleaning to St 3; surface profile 30–75 μm.
Concrete: must be sound and dry (moisture content ≤6%), free of contamination; repair defects and apply after a sealing primer; for old coatings, roughen and remove chalked/loose parts.
System compatibility / packing / storage
Compatibility: S55-2 system—cooling tower damp-proof primer + topcoat.
Packing: Primer—Part A 24 kg, Part B 3 kg; topcoat—Part A 18 kg, Part B 3 kg.
Storage: Shelf life 12 months; store dry/cool/ventilated, away from fire and direct sunlight; no outdoor stacking.
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Protect. Perform. Endure. – Advanced Coatings for Industrial Excellence.
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