Hydrophilic aluminum foil is the main raw material for air conditioning heat exchangers. After ordinary aluminum foil is degreased, washed, and dried, special coatings are coated on both surfaces, after drying and cooling, it becomes a hydrophilic and corrosion-resistant material. It can extend the life of the air conditioner by 5-10 years. Hydrophilic aluminum foil for air conditioners has a good hydrophilic effect, which can make the moisture in the hot air spread easily and flow downward along the sheet, so that the water droplets between the heat exchange plates will not “bridge” and affect the ventilation function of the heat exchanger. Hydrophilic aluminum foil is widely used in household industrial air conditioners, refrigeration cabinets, automobile air conditioners and other refrigeration equipment. The main aluminum foils for air conditioning are: 8006 hydrophilic aluminum foil, 8011 hydrophilic aluminum foil, 3102 hydrophilic aluminum foil, 1100 hydrophilic aluminum foil, etc. 8006 Air conditioning aluminum foil has good plate shape, good coating performance, high coating adhesion, good hydrophilicity and good corrosion resistance. Colors are blue and gold.
|blue, gold, green,rose red, etc.||Paper tube, aluminum|
Simply speaking, hydrophilicity is the affinity between the aluminum foil surface and water, measured by the angle formed by water droplets on the aluminum foil surface. 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. Fins with good hydrophilicity can improve the heat exchange efficiency of the air conditioner heat exchanger, significantly save electricity consumption, effectively reduce the spacing between the heat exchanger fins, thereby reducing the volume of the air conditioner, and beautify the appearance of the air conditioner and improve room space utilization for household air conditioners.
Pour the water on the aluminum foil and observe their affinity for the water. On ordinary aluminum foil, water is very thick and flows down on it, and sometimes there are water droplets remaining. On hydrophilic aluminum foil, the water is distributed very thinly and flows down evenly and quickly, with no water droplets remaining.
Uncoiling→Pretreatment→Surface roller coating (first roller coating→first drying→second roller coating→second drying)→coiling
The function of pretreatment: mainly to enhance the bonding force between the coating and the aluminum foil.
Function of coating: The coating plays a role in increasing the hydrophilicity and corrosion resistance of the product.
For products with higher performance requirements, if the primary coating fails to meet the required indicators, a secondary coating is required. Generally speaking, single-coat products have both hydrophilic and corrosion-resistant functions in one coating. For double-coated products, the first coating has a corrosion-resistant effect, and the second coating has a hydrophilic effect.