In modern society, electronic devices, high-frequency equipment, high-voltage wires, microwave equipment, and other high-temperature, high-frequency, high-voltage, low-frequency microwave equipment and objects all produce electromagnetic radiation. The electromagnetic wave bands of the radiation are different, and the human body is basically harmless to electromagnetic waves in the 2 μ m wavelength band. Electromagnetic waves in the 2 μ m wavelength band above or below will cause certain harm, especially ultra-low frequency electromagnetic waves such as ultraviolet rays and gamma rays. Long term exposure to harmful electromagnetic waves can cause varying degrees of damage to the human nervous system, immune system, and reproductive system.
AbsorberIt is a material used to absorb excess electromagnetic radiation, usually made of metal or non-metal materials. The main characteristic of absorbing materials is the ability to simultaneously absorb and shield electromagnetic waves in the same material, thereby reducing the impact of electromagnetic radiation on equipment.
At present, the absorbing materials used in the frequency range of 300 MHz to 6 GHz are mainly composed of metal and non-metal materials. Among them, metal absorbing materials mainly include stainless steel, copper alloys, aluminum, etc
Non metallic absorbing materialsIt mainly includes polyvinyl chloride (PVC), polyethylene (PE), polyurethane (PU), etc.
In practical applications, absorbing materials can be selected and designed according to different needs. For example, absorbing materials used in radar systems need to have good electromagnetic shielding and absorbing properties to reduce the impact of radar reflections; The absorbing materials used in satellite communication systems need to have good electromagnetic shielding and absorbing properties to reduce the impact of satellite reflections; The absorbing materials used in automotive systems need to have good electromagnetic shielding and absorbing properties to reduce electromagnetic interference inside the car; The absorbing materials used in medical equipment need to have good electromagnetic shielding and absorbing properties to reduce electromagnetic interference inside the medical equipment.
In practical applications, absorbing materials need to meet certain requirements to ensure performance and application effectiveness. For example, when used in high temperature and high interference environments, it is necessary to ensure the material's heat resistance and electromagnetic shielding performance; When used in a high vacuum environment, it is necessary to ensure the vacuum resistance and absorption performance of the material; In practical applications, it is necessary to select and design according to different needs to ensure product quality and application effectiveness.
In summary, absorbing materials used in the frequency range of 300 MHz to 6 GHz are a type of absorbing material with excellent performance and promising application prospects. This material can effectively reduce the impact of electromagnetic waves on equipment, improve the safety and reliability of the internal environment of the equipment. In practical applications, it is necessary to select and design according to different needs to ensure that product quality and application effects meet the requirements.
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