PLE06-4 Inorganic Zinc-Rich Primer

Inorganic Zinc-Rich Primer (2K) – Two-component ethyl silicate zinc-rich primer for cathodic protection of blast-cleaned steel.

  • General-purpose use for bridges, towers, gas holders, oil tanks, oil/gas pipelines, and industrial steel structures.

  • High zinc dust content with stated water/oil/media resistance and welding/cutting resistance.

  • Sa 3 surface preparation (not lower than Sa 2.5); touch dry 10 min at 25°C, RH 70–85%.

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PLE06-4 Inorganic Zinc-Rich Primer Description

Overview

PLE06-4 Inorganic Zinc-Rich Primer is a two-component inorganic zinc-rich primer based on ethyl silicate resin and zinc dust.

The product is formulated with ethyl silicate resin, zinc dust, toughening agent, anti-settling agent, and solvent, and is supplied as Part A and Part B. It is described as having high zinc dust content with excellent corrosion resistance and cathodic protection, heat resistance, good welding/cutting resistance, good compatibility with other coating types, and excellent resistance to water, oil, and media.

Key Benefits

  • Described as having high zinc dust content

  • Provides excellent corrosion resistance and cathodic protection

  • Described as having heat resistance

  • Described as having good welding/cutting resistance

  • Described as having good compatibility with other coating types

  • Described as having excellent resistance to water, oil, and media

This primer is suitable for long-term steel protection projects in industrial and marine environments.

Typical application areas

  • Blast-cleaned steel

  • Bridges

  • Towers

  • Gas holders

  • Oil tanks

  • Oil/gas pipelines

  • Industrial steel structures

Application Guide

Item Details
Mixing Ratio (A:B) 28:7
Induction Time No limit (as stated)
Pot Life 4 h (25°C)
Application Methods Airless spray, brush
Thinner / Cleaner X-11 inorganic zinc thinner
Typical Dilution 5–15%
Recoat Interval / Overcoating Interval (25°C, RH 70–85%) Minimum 24 h (longer at lower humidity); maximum not limited
Recommended DFT 50–75 µm per coat (brush: 40–50 µm per coat)

Surface Preparation

Abrasive blasting to Sa 3 (not lower than Sa 2.5), or power-tool cleaning to St 3; surface profile 30–75 µm.

Technical Data

Item Value
Product Type Two-component inorganic zinc-rich primer
Appearance / Color Gray
Theoretical Consumption 0.21 kg/m² at 50 µm DFT (losses not included)
Density / Specific Gravity 1.8 kg/L
Drying / Curing (25°C, RH 70–85%) Touch dry 10 min; hard dry 2 h; cured 24 h
Packaging Part A 28 kg; Part B 7 kg
Shelf Life 6 months

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

System Compatibility

This primer is compatible with epoxy intermediate coating, epoxy topcoat, and polyurethane intermediate coating.

Frequently Asked Questions

What is this primer used for?
This primer is used as a long-term anti-corrosion primer for blast-cleaned steel.

What substrates and structures is it suitable for?
The product is suitable for blast-cleaned steel, bridges, towers, gas holders, oil tanks, oil/gas pipelines, and industrial steel structures.

What application methods are recommended?
The product can be applied by airless spray and brush.

What surface preparation is required before application?
Abrasive blasting to Sa 3 (not lower than Sa 2.5), or power-tool cleaning to St 3, with a surface profile of 30–75 µm.

What is the recommended recoat interval?
The minimum recoat interval is 24 h at 25°C and RH 70–85%, and it is longer at lower humidity; the maximum interval is not limited.

What coatings is it compatible with?
It is compatible with epoxy intermediate coating, epoxy topcoat, and polyurethane intermediate coating.

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