Hydrophilic aluminum foil is a specially treated type of aluminum foil that, compared to ordinary aluminum foil, exhibits higher corrosion resistance, lower air resistance, and better condensate drainage performance. By coating the aluminum surface with a hydrophilic coating, the foil possesses excellent water-conducting properties, causing condensate to form a thin film rather than droplets. This significantly improves heat transfer efficiency and enhances the overall performance of the cooling system.
Description
Working Principle of Hydrophilic Aluminum Foil
Product Features
- Excellent Hydrophilicity
The special coating allows condensed water to spread quickly across the surface, preventing water droplet accumulation and improving heat exchange efficiency.
- Enhanced Corrosion Resistance
The protective coating improves resistance to oxidation and corrosion, extending the service life of heat exchangers.
- Improved Heat Transfer Performance
By forming a uniform water film, the foil enhances heat exchange efficiency in evaporators and condensers.
- Reduced Airflow Resistance
The hydrophilic surface minimizes water bridging between fins, allowing smoother airflow and better cooling performance.
- Anti-Odor and Anti-Mildew Performance
High-quality hydrophilic coatings can help prevent unpleasant odors and inhibit bacterial growth in air conditioning systems.
Typical Specifications
| Item | Specification |
|---|---|
| Alloy | 1100, 1200, 8011 |
| Temper | O, H22 |
| Thickness | 0.08 – 0.20 mm |
| Width | 100 – 1250 mm |
| Coating Type | Colorless Hydrophilic Coating. Super Hydrophilic Coating. Antibacterial Hydrophilic Coating. |
| Appearance | Blue (most common), Gold, Black. |
Performance Parameters
| Parameter | Typical Value | Significance |
|---|---|---|
| Initial hydrophilic angle | ≤10° | Condensed water spreads quickly without droplet accumulation |
| Durable hydrophilic angle | ≤20° (after aging) | Long-term hydrophilic performance |
| Coating adhesion | No peeling at cupping value 5 mm | Withstands stamping and forming processes |
| Corrosion resistance | Neutral salt spray ≥72 h | Prevents aluminum oxidation and white powder |
| Heat resistance | No discoloration at 200°C / 5 min | Coating remains stable during welding or drying |
Surface Treatments
Product Applications
| No. | Product Name | Coating Composition | Neutral Salt Spray Test | Product Applications |
|---|---|---|---|---|
| 1 | Blue Hydrophilic Aluminum Foil | Water-based coating | 500 hours | Suitable for general applications, including residential air conditioners, commercial air conditioners, data center air conditioners, refrigeration and freezing equipment, and other fields. |
| 2 | Golden Hydrophilic Aluminum Foil | Water-based coating | 500 hours | Suitable for general applications, including residential air conditioners, commercial air conditioners, data center air conditioners, refrigeration and freezing equipment, and other fields. |
| 3 | Blue High-Corrosion-Resistant Hydrophilic Aluminum Foil | Epoxy resin coating | 1000 hours | Suitable for coastal areas, chemical industrial parks, heavy industrial plants, and other environments with certain corrosive conditions or high-temperature and high-humidity conditions. Widely used in commercial HVAC systems, air handling units, rail transit, mushroom cultivation, and other fields. |
| 4 | Golden High-Corrosion-Resistant Hydrophilic Aluminum Foil | Epoxy resin coating | 1000 hours | Suitable for coastal areas, chemical industrial parks, heavy industrial plants, and other environments with certain corrosive conditions or high-temperature and high-humidity conditions. Widely used in commercial HVAC systems, air handling units, rail transit, mushroom cultivation, and other fields. |
| 5 | Super Hydrophilic Aluminum Foil | Epoxy resin coating | 1000 hours | Suitable for coastal areas, chemical industrial parks, heavy industrial plants, and other environments with certain corrosive conditions or high-temperature and high-humidity conditions. Widely used in commercial HVAC systems, air handling units, rail transit, mushroom cultivation, and other fields. |
| 6 | Golden High-Corrosion-Resistant Hydrophilic Aluminum Foil | Epoxy resin coating | 1500 hours | Suitable for special environments, including coastal areas and chemical industrial parks with corrosive atmospheres or high-temperature and high-humidity conditions. Used in commercial HVAC, air handling, rail transit, refrigeration, and other applications. |
| 7 | Black High-Corrosion-Resistant Hydrophilic Aluminum Foil | Epoxy resin coating | 2000 hours | Suitable for special environments, including coastal areas and chemical industrial parks with corrosive atmospheres or high-temperature and high-humidity conditions. Used in commercial HVAC, air handling, rail transit, refrigeration systems, and marine air conditioning applications. |
Notes on Use
- Store in a dry and dark place to prevent coating moisture absorption or UV aging.
- Control stamping oil temperature and die clearance during processing to avoid coating scratches.