Absorbing materialIt refers to a type of material that can effectively absorb incident electromagnetic waves and attenuate their scattering. It converts incident electromagnetic waves into thermal energy or other forms of energy through various loss mechanisms of the material to achieve the purpose of absorbing electromagnetic waves. Unlike shielding solutions, its effectiveness lies in reducing the number of interfering electromagnetic waves. It can be used alone to absorb electromagnetic waves, or combined with a shielding system to improve the high-frequency efficiency of the equipment.
According to the mechanism of material loss, absorbing materials can be divided into resistive, dielectric, and magnetic dielectric types. Silicon carbide, graphite, and other materials belong to the resistive type, and electromagnetic energy is mainly attenuated in the resistive type; Barium titanate and other materials belong to the dielectric type, and their mechanism relies on the relaxation, attenuation, and absorption of electromagnetic waves through electronic polarization, ion polarization, molecular polarization, or interface polarization of the dielectric; Ferrite, ultrafine metal powder, etc. belong to the magnetic medium type, with high magnetic loss tangent, relying on magnetic polarization mechanisms such as hysteresis loss, domain wall resonance, natural resonance, and aftereffect loss to attenuate and absorb electromagnetic waves.
Next, we will introduce this type of absorbing material——
Foam absorbing material(Multi layer)
Foam type microwave absorbing material (multilayer) is a kind of multilayer structure microwave absorbing material, which is composed of multilayer foam and has wave absorbing performance. The following are some characteristics of foam wave absorbing materials (multilayer):
High durability: foam wave absorbing material (multi-layer) has good wear resistance and can withstand long-term use.
High absorptivity: foam type microwave absorbing materials (multilayer) have high absorptivity and can absorb the energy of electromagnetic radiation.
Porous structure: foam type microwave absorbing material (multilayer) has a porous structure, which helps to absorb electromagnetic radiation.
Good fluidity: foam wave absorbing material (multi-layer) has good fluidity and can flow to the place where it is needed.
Affordable price: foam wave absorbing materials (multi-layer) are affordable and suitable for small projects.
Scope of application: foam wave absorbing material (multi-layer) is applicable to places with high requirements for electromagnetic radiation, such as airports, power plants, substations, etc.
In general, foam type absorbing material (multilayer) is a kind of absorbing material with high absorption rate and durability, which is suitable for electromagnetic radiation control of small projects and large projects.
