Electromagnetic shielding foil is a material commonly used for protection against electromagnetic interference (EMI). It reduces the impact of electromagnetic fields by reflecting and absorbing electromagnetic waves, thus protecting sensitive electronic equipment from external electromagnetic interference, and at the same time avoiding the electromagnetic radiation generated by the equipment itself from affecting other equipment. Electromagnetic shielding aluminium foil, as a kind of electromagnetic shielding material with high protection efficiency, plays an important role in modern electronic equipment, communication base station, aerospace and other fields. We, Haomei Aluminum, will introduce to you the common alloys, tempers and thicknesses of electromagnetic shielding aluminum foil in details, as well as the reasons why aluminium foil can be used for electromagnetic shielding and its wide range of applications.
Aluminium foil for electromagnetic shielding is usually made of high-purity aluminum, and commonly used alloys include 1060-O, 1070-O, 1100-O and others. In terms of tempers, aluminum foil undergoes different processing treatments, such as annealing (O temper), to obtain the desired physical properties and shielding effect. These aluminum alloys and tempers give aluminum foil good electrical conductivity and ductility, providing a solid foundation for electromagnetic shielding.
Thickness is one of the key parameters of aluminium foil for electromagnetic shielding. Generally, the thickness of aluminum foil ranges from 0.01 to 0.2 mm, depending on the application needs and shielding effectiveness requirements. Thinner aluminum foil has the advantage of being lightweight and easy to process, and is suitable for applications with stringent weight and space requirements; while thicker aluminum foil provides higher shielding effectiveness, and is suitable for areas with extremely high requirements for electromagnetic shielding performance.
Aluminium foil can be effectively used for electromagnetic shielding, mainly due to its excellent electrical conductivity. When an electromagnetic wave encounters aluminum foil, most of the wave will be reflected back, and part of the wave will be absorbed by the foil, thus reducing interference and leakage of electromagnetic waves. This shielding mechanism makes aluminum foil an ideal material for electromagnetic shielding.
Electromagnetic shielding aluminum foil has a wide range of applications. In the construction of 5G communication base stations, electromagnetic shielding aluminum foil is widely used to protect equipment from electromagnetic wave interference and ensure stable transmission of communication signals. In addition, in new energy vehicles, smart home appliances and other emerging fields, electromagnetic shielding aluminum foil also plays an important role in protecting the normal operation of electronic equipment. In the field of aerospace, electromagnetic shielding aluminum foil can resist external electromagnetic interference, to ensure the stability of the communication and navigation system of the aircraft.
It is worth mentioning that with the progress of science and technology and the increasing complexity of the electromagnetic environment, the performance of electromagnetic shielding aluminium foil is also constantly improving. Some leading enterprises have successfully developed a new type of electromagnetic shielding aluminum foil with thinner thickness and better shielding effect, which meets the needs of the high-end market.
In summary, electromagnetic shielding foil has become an indispensable electromagnetic shielding material for modern electronic equipment, communication base stations, aerospace and other fields due to its excellent electrical conductivity, lightweight and easy processing characteristics, and wide range of applications. In the future, with the continuous progress of technology and the expansion of application areas, electromagnetic shielding aluminium foil will continue to play a greater role.
