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2K isocyanate-free polysiloxane topcoat with outstanding color retention, gloss retention and UV stability for steel structures in severe corrosive atmospheres. Suited for petrochemical, power and bridge applications. Sa2.5 prep, 45µm DFT per coat.
Overview
Two-component polysiloxane topcoat for steel protection in severely corrosive atmospheric environments.
Composition
Imported polysiloxane resin, imported curing agent, weather-resistant pigments, additives; supplied as Part A & Part B.
Typical uses
For equipment and facilities in petrochemical, power, metallurgy, transportation, food industries, gas holders, pipelines, and storage tanks.
Technical data (typical)
Appearance: various colors.
Theoretical consumption: 0.16 kg/m² at 50 µm DFT (loss not included).
Density: 1.2 kg/L.
Drying time (25°C): surface dry 1 h; hard dry 24 h; full cure 7 d.
Application data (25°C)
Mixing ratio (A:B): 24:3.
Induction time: 5 min.
Pot life: 4 h.
Application methods: airless spray, brush, roller.
Thinner: dedicated thinner, 3–9%.
Recoat interval: min 24 h; max 7 d.
Recommended DFT per coat: 30–50 µm (brush/roller 30–40 µm).
Compatible undercoats: epoxy zinc-rich primer, epoxy MIO intermediate coating, fluorocarbon topcoat, etc.
Surface preparation
Steel: blast to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.
System compatibility / packing / storage
Packing: Part A 24 kg; Part B 3 kg.
Storage: dry, cool, ventilated; away from fire; avoid strong sunlight; no outdoor storage.
Shelf life: 12 months.
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