الوصف
Product Overview
BCA-90MPU is a two-component water-based polyurethane coating designed for steel structures requiring durable, eco-friendly protection. With excellent adhesion, flexibility, and chemical resistance, it delivers long-lasting performance while meeting strict environmental standards.
Key Features & Benefits
✔ Water-based & low VOC – Safe for workers and the environment.
✔ Superior durability – Resists impact, weathering, and chemicals.
✔ Fast drying – Touch-dry in 20 minutes (at 23°C).
✔ Versatile application – Compatible with airless spray and conventional spray.
✔ Customizable colors – Available in a wide range of finishes.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | Two-component water-based polyurethane |
| Volume Solids | 45±2% |
| Recommended DFT | 60 µm (dry), 111 µm (wet) |
| Theoretical Coverage | 6.9 m²/kg, 9 m²/L (at 60 µm DFT) |
| Drying Time (23°C) | Touch-dry: 20 min, Full cure: 7 days |
| Mixing Ratio | Base + hardener (mechanical stirring required) |
| Thinner | Water (5-15% dilution) |
| Pot Life | 2 hours (23°C) |
Recommended Applications
Steel structures (bridges, warehouses, industrial facilities).
Architectural metalwork (façades, railings).
Any project requiring eco-friendly, high-performance coatings.
Application Guidelines
Surface Preparation
Clean and degrease steel thoroughly (SSPC-SP1 or equivalent).
Remove rust, old paint, and contaminants.
Mixing & Thinning
Stir base component mechanically before adding 5-15% water.
Mix with hardener as specified.
Spray Application
Nozzle size: 0.28–0.38 mm
Pressure: 15 MPa (adjust based on equipment)
DFT range: 30–60 µm (avoid excessive thickness).
Drying & Curing
Allow 7 days for full cure before exposure to harsh conditions.
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