1, non-coated aluminum foil Uncoated aluminum foil refe […]
1, non-coated aluminum foil
Uncoated aluminum foil refers to an aluminum foil that has been rolled and annealed without any form of surface treatment. In China 10 years ago, aluminum foil used in air conditioning heat exchange films about 15 years ago was uncoated aluminum foil. Even at present, about 50% of the heat exchange films used in developed countries abroad are still uncoated aluminum foils, and in China, this ratio is about 60%.
2, coating aluminum foil
The so-called coated aluminum foil is the surface retreatment of non-coated aluminum foil, so that it has a special function. In countries with rapidly developing technologies such as Japan and Germany, the use of coated aluminum foil has been used for more than 15 years. In China, the use of coated aluminum foil does not exceed 10 years.
3, corrosion-resistant aluminum foil
The surface of the corrosion-resistant aluminum foil product has a certain anti-corrosive protective layer. The air-conditioning heat-exchange sheet made of this product can be applied to relatively harsh areas and can significantly improve the service life of the air conditioner. At the same time, due to the improvement of the corrosion resistance of the heat exchange sheet, the generation of surface corrosion powder is greatly reduced, thereby improving the ventilation quality and purifying the air in the air-conditioned room.
4, hydrophilic aluminum foil
Hydrophilic aluminum foil surface has strong hydrophilicity. The quality of hydrophilicity is determined by the angle formed by the adhesion of water to the foil surface, as shown in Figure 1. The smaller the a angle is, the better the hydrophilic property is, and on the contrary, the worse the hydrophilic property is. In general, the angle a is less than 35. That is, hydrophilic properties.
5, hydrophobic aluminum foil
Hydrophobic aluminum foil, also called water-repellent aluminum foil, has the opposite surface properties and hydrophilic aluminum foil. That is, when the condensed water condenses on the surface of the aluminum foil, the contact angle with the aluminum foil is relatively large, generally 75. the above.
6, self-lubricating aluminum foil
The air conditioning heat transfer sheet is generally added to the surface of the heat exchange sheet in the manufacturing process, then punched and flanged, and then washed with trichloroethylene. Since trichloroethylene is harmful to the human body, in order to reduce this process, a self-lubricating aluminum foil is accordingly produced.
7, mildew aluminum foil
Anti-mildew aluminum foil is mainly used in the air-falling indoor unit. Its main function is to prevent the surface of the heat transfer sheet from being moldy due to long use or placement, thereby significantly improving the air-falling ventilation quality and preventing the generation of abnormal odors. To improve the environment of the air-conditioned room.