PLH-20 Special Epoxy Primer

Special Epoxy Primer (2K) – Two-component special epoxy primer for industrial corrosion protection.

  • For power, bridge, petrochemical, marine, and port facilities/equipment.

  • Pot life 2 h (25°C); mix ratio 25:2.5.

  • Compatible with epoxy MIO intermediate and epoxy/PU topcoat systems.

PLH-20 Special Epoxy Primer Descriotion

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.

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