2K C6-modified epoxy zinc primer engineered for synergistic cathodic protection and barrier performance. Suited for offshore platforms, marine vessels & petrochemical pipelines. Exceeds 1,200-hour salt spray resistance at 50µm DFT.
PLH53-35 Epoxy Zinc Primer (C6-Modified) is a two-component epoxy zinc primer modified with special C6-element material and cured with a polyamide hardener. It is intended for cathodic-protection priming and use in industrial anti-corrosion coating systems, including localized repair of inorganic zinc-rich primer coatings.
The product is formulated with epoxy resin, ultrafine zinc powder, anti-settling agent, toughening agent, solvent, and special C6-element material, and is supplied with a polyamide curing agent as Part A and Part B.
Intended for cathodic-protection priming on steel substrates
Suitable for use in industrial anti-corrosion coating systems
Can be applied by airless spray, brush, or roller
Can be used for localized repair of inorganic zinc-rich primer coatings
Compatible with a wide range of intermediate coatings and topcoats
Salt spray resistance: 1300 h
This primer is suitable for a wide range of steel protection projects in industrial and marine environments.
Typical application areas
Ship repair/building
Bridges
Petrochemical facilities
Steel structures
Offshore platforms
Underwater steel structures
Pipelines
Oil tanks
Maintenance and repair uses
Cathodic-protection priming in industrial anti-corrosion coating systems
Localized repair of inorganic zinc-rich primer coatings
| Item | Details |
|---|---|
| Mixing Ratio (A:B) | 21:3 |
| Induction Time | 5 min |
| Pot Life | 4 h |
| Application Methods | Airless spray, brush, roller |
| Thinner / Cleaner | X-7 epoxy thinner |
| Typical Dilution | 2–8% (air spray/roller may require more) |
| Recoat Interval / Overcoating Interval (25°C) | Minimum 12 h; maximum not limited |
| Recommended DFT | 50–80 µm per coat (brush/roller: 30–40 µm per coat) |
Abrasive blasting or shot blasting to Sa 2.5, or power-tool cleaning to St 3. Surface profile: 30–75 µm.
| Item | Value |
|---|---|
| Product Type | Two-component epoxy zinc primer |
| Appearance / Color | Gray |
| Theoretical Consumption | 0.25 kg/m² at 50 µm DFT (losses not included) |
| Density / Specific Gravity | Approx. 1.87 kg/L |
| Drying / Curing (25°C) | Touch dry 1 h; hard dry 24 h; full cure 7 days |
| Salt Spray Resistance | 1300 h |
This primer is compatible with epoxy intermediate coating, epoxy topcoat, polyurethane topcoat, acrylic topcoat, chlorinated rubber topcoat, high chlorinated polyethylene topcoat, chlorosulfonated polyethylene topcoat, and chlorinated ether topcoat.
Packaging: Part A 21 kg; Part B 3 kg
Shelf Life: 12 months
Store in a dry, cool, ventilated warehouse away from fire sources and direct sunlight; outdoor storage is not permitted.
What is this primer used for?
This primer is used for cathodic-protection priming in industrial anti-corrosion coating systems and for localized repair of inorganic zinc-rich primer coatings.
What substrates and structures is it suitable for?
The product is intended for steel substrates and is suitable for ship repair/building, bridges, petrochemical facilities, steel structures, offshore platforms, underwater steel structures, pipelines, and oil tanks.
What application methods are available?
The product can be applied by airless spray, brush, or roller.
What surface preparation is recommended before application?
Abrasive blasting or shot blasting to Sa 2.5 is recommended, or power-tool cleaning to St 3. A surface profile of 30–75 µm is specified.
What is the recommended recoat interval?
The minimum recoat interval is 12 h at 25°C, and the maximum interval is not limited.
What coatings is it compatible with?
It is compatible with epoxy intermediate coating, epoxy topcoat, polyurethane topcoat, acrylic topcoat, chlorinated rubber topcoat, high chlorinated polyethylene topcoat, chlorosulfonated polyethylene topcoat, and chlorinated ether topcoat.
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