Special Functional Coatings
Dachin EP 750
Epoxy glass flake coating
Composition
The coating is formulated from modified epoxy resin, thin graphene layers, glass flakes, fillers, and additives through grinding and dispersion; the second component is a curing agent.
Key Characteristics
The coating film is hard, wear-resistant, and highly adherent, with excellent water resistance, salt spray resistance, and anti-corrosion properties. Glass flake technology enhances impact resistance and wear resistance, ensuring strong adhesion on various surface conditions. Suitable for wet-blast treated substrates, applicable for marine and onshore equipment.
Applications
Designed for heavy-duty corrosion protection in harsh environments, suitable for protecting offshore steel pipe piles, jacket structures, and other marine equipment in splash zones, tidal areas, and submerged regions.
Technical Specifications
| Film Appearance | Gray/Yellow, smooth finish |
|---|---|
| Volume Solids Content (%) | 85±2 |
| Density (kg/L) | 1.5±0.05 |
| Impact Resistance (kg·cm) | ≥50 |
Packaging Specifications
| Weight (kg) | Volume (L) | |
|---|---|---|
| Component A | 25.9 | 16 |
| Component B | 4.1 | 4 |
| Total | 30 | 20 |
Basic Parameters
| Mix Ratio | Weight Ratio A:B = 6.3:1 |
|---|---|
| Volume Ratio A:B = 4:1 | |
| Pot Life | 5°C: 6h; 15°C: 5h; 25°C: 4h |
| Theoretical Coverage | ~8.5 m²/L (dry film 100μm) |
Recoat Intervals
| Temperature (°C) | Surface Dry (min) | Hard Dry (h) | Recommended Recoat Interval | |
|---|---|---|---|---|
| Minimum | Maximum | |||
| 5 | 100 | 16 | 16 | 1 month |
| 15 | 75 | 10 | 10 | |
| 25 | 30 | 8 | 8 | |
| 40 | 20 | 6 | 6 | |
Data derived from standard film thickness on steel test panels.
Application Guide
- Dachin EP 750 Epoxy Glass Flake Coating can be applied via conventional air spray, airless spray, or brush.
- Curing requires temperatures above 5°C. Maximum application temperature: 40°C. Surface temperature must remain at least 3°C above dew point, with relative humidity ≤85%.
- Ensure ventilation in enclosed spaces during application.
- Mix components A and B strictly by ratio before use. Mix only required quantities, stir thoroughly, and use within pot life.
- Substrate must be clean, dry, and free of contaminants. Ensure ventilation in enclosed spaces.
- Mix components A and B strictly by ratio before use. Mix only required quantities, stir thoroughly, and use within 4 hours after preparation.
- Keep all tools clean and dry before and after application.
Compatible Coatings
Subsequent coats: Dachin EP 550 Epoxy Zinc Silicate Intermediate, Dachin PU 770 Polyurethane Coating.
Coating Layers
Recommended application: 1 coat via airless spray, 2-3 coats via conventional spray, or 2 coats via brush/roller, achieving dry film thickness of 60-80μm.
Surface Preparation
- Prior to application, the substrate must be clean, dry, smooth, free of oil, rust, and debris.
- Steel surfaces should be blast cleaned to Sa2.5 standard or power tool cleaned to St3 standard.
- Light dust can be removed with compressed air or a clean brush.
- Old coatings should be scraped, filled, sanded smooth, or treated as required.
- Oils can be removed with gasoline or thinner, followed by clean cloth wiping.
Mixing
This product is supplied in two components (Component A base and Component B hardener). Thoroughly stir both components with power tools before mixing strictly by ratio. Mix again and ensure homogeneity.
Application Methods
| Application Type | Thinner | Dilution (%) | Nozzle Size (mm) | Spray Pressure (MPa) |
| Airless Spray | Dachin Thinner X17 | 0-5% | 0.4-0.48 | 12-15 |
| Conventional Spray | Dachin Thinner X17 | 3-10% | 1.5-2.0 | 0.3-0.4 |
| Roller/Brush | Dachin Thinner X17 | 0-3% | N/A | N/A |
Dilution calculated by paint weight.