PLH-20 Special Epoxy Primer

Overview
Two-component special epoxy primer cured with polyamine, formulated with modified epoxy resin, premium anti-rust pigments, composite anti-rust agents, additives, and solvent.​
It is described as having excellent adhesion, strong corrosion resistance, a tough and wear-resistant film, and good compatibility with subsequent coatings.​

Composition
Modified epoxy resin, premium anti-rust pigments, composite anti-rust agents, additives, and solvent; polyamine curing agent; supplied as Part A and Part B.​

Typical uses

• Corrosion protection for facilities and equipment in power, bridges, petrochemical, marine, and port environments.​

Technical data (typical)

• Appearance / color: Iron oxide red, brownish, gray.​

• Theoretical consumption: 0.15 kg/m² at 50 µm DFT (losses not included).​

• Density / specific gravity: 1.4 kg/L.​

• Drying / curing (25°C): Touch dry 1 h; hard dry 24 h; full cure 7 days.​

Application data (25°C)

• Mixing ratio (A:B): 25:2.5.​

• Induction time: 5 min.​

• Pot life: 2 h.​

• Application methods: Airless spray, brush, roller.​

• Thinner / Cleaner: X-7 epoxy thinner; typical dilution 2–8%.​

• Recoat interval / overcoating interval (25°C): Minimum 24 h; maximum 7 days.​

• Recommended DFT: 60–80 µm per coat (brush/roller: 40–50 µm per coat).​

Surface preparation

• Abrasive blasting or shot blasting to Sa 2.5, or power-tool cleaning to St 3; surface profile 30–75 µm.​

System compatibility / packing / storage

• Compatible topcoats: epoxy MIO intermediate coating, epoxy topcoat, polyurethane topcoat, etc.​

• Shelf life: 12 months.​

• Storage: Store in a dry, cool, ventilated warehouse away from fire sources and direct sunlight; outdoor storage is not permitted.​

• Packaging: Part A 25 kg; Part B 2.5 kg.