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hydrophilic aluminum foil


 In the South, what is the most indispensable electrical appliance for winter and summer?
I think most of the small partners will answer - air conditioning!
Today we will have a chat:
Hydrophilic aluminum foil used compared to ordinary aluminum foil

The magic of hydrophilic aluminum foil is:
It is surface treated -
More hydrophilic layers.

Is the hydrophilic layer so amazing?
Correct! Adding this layer is not as simple as adding clothes and its performance will change! The hydrophilic layer can make the water in the hot air condense on the heat exchange sheet easy to spread and flow down the sheet, so as to avoid the heat exchanger being affected by the water bridge between the heat exchange sheets. The ventilation effect increases the heat exchange rate by 5%.

Hydrophilic aluminum foil 6 major advantages:
1. Extend the life The corrosion resistance and weather resistance of the exchanger can be improved and the service life of the heat exchanger can be prolonged.
2. Reduce noise Due to the waterless beads, the air conditioning noise caused by vibration can be reduced accordingly.
3. Dust removal Prevents the air-conditioning oxidizes powder from being blown into the room and adversely affects the human body and meets environmental protection requirements.
4. Anti-corrosion
5. Anti-fungal
6. No smell

However – the time is invincible
Hydrophilic membranes age and oxidize over time
Hydrophilic properties will decline significantly,
Causing condensed water during the refrigeration process,
Forming a water bridge between the aluminum foil fins to block the circulation air passage.
This causes the cooling effect to decay year by year.
Main performance indicators of hydrophilic aluminum foil:
It is its killer - hydrophilic.
The hydrophilicity is simply the size of the surface of the aluminum foil and the water measured by the angle at which the water droplets form an angle on the surface of the aluminum foil.
The angle of water droplets on the surface of ordinary aluminum foil is above 70 degrees, while the angle of water droplets on the surface of hydrophilic aluminum foil is below 35 degrees.
The fins with good hydrophilicity can improve the heat exchange efficiency of the air conditioner heat exchanger, obviously save power consumption and effectively reduce the fin spacing of the heat exchanger, thereby reduce the volume of the air conditioner, achieve beautify the shape of the air conditioner and improve the utilization of the room space for the home air conditioner.
Hydrophilicity is further divided into initial and sustained hydrophilicity.
Initial hydrophilicity: (a few years ago, I fell out of favor in recent years)
Sustained hydrophilicity: (in the past few years, I have been in the word and I have been favored in recent years)
The main treatment method:
Single coating single drying method and double coating double drying method.
The single-coating single-bake method is to degrease the aluminum foil and then chemically oxidize to form a chemical conversion film on the surface of the aluminum foil and finally apply a hydrophilic coating. The method is simple in process and low in cost.
Production process of hydrophilic aluminum foil:
Unwinding → pretreatment → surface roll coating (first roll coating → first drying → second roll coating → second drying) → coiling
The function of pretreatment: mainly to enhance the adhesion of the coating to the aluminum foil.
The function of the coating: the coating acts to increase the hydrophilicity and corrosion resistance of the product.
For products with higher performance requirements, if the primary coating does not meet the required specifications, a secondary coating is required. Generally, a single-coated product has a hydrophilic function and a corrosion resistance in a single coating. For double-coated products, the first coating acts as a corrosion-resistant and the second coating acts as a hydrophilic.

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