What are the main categories of absorbing materials？

The absorbing material loss mechanism can be roughly divided into the following categories:
　　First, the resistance loss is the resistance loss related to the conductivity of this absorption mechanism, that is, the greater the conductivity, the greater the macroscopic current (including the current caused by the change of electricity). The magnetic field and eddy currents caused by changes in the magnetic field are caused by the carrier in order to facilitate the conversion of electromagnetic energy into heat energy.
　　Second, dielectric loss is a dielectric loss absorption mechanism related to the electrode, that is, through the "friction" effect caused by the repeated polarization of the medium, the electromagnetic energy is converted into heat energy consumption and dissipation. Dielectric polarization process includes: electron cloud displacement polarization, polar dielectric moment polarization, ferroelectric domain polarization and wall displacement.
　　Magnetic loss, this absorption mechanism is a magnetic loss related to the dynamic magnetization process of the ferromagnetic medium. This loss can be subdivided into: hysteresis loss, cyclotron eddy current, damping loss and magnetic aftereffect. The main sources are domain steering, domain wall displacement and domain intrinsic resonance similar to hysteresis mechanism. In addition, the new microwave loss mechanism of nanomaterials has become a hot topic in the analysis of absorbing materials.
　　Wave absorbing material is a kind of composite material with excellent absorbing ability to electromagnetic wave. This wave-absorbing material is a composite material that is formed by physical refinement and magnetic field treatment of the alloy to form a magnetic alloy with high magnetic permeability and uniformly dispersed in the polymer.
　　The principle of wave absorbing material is based on electromagnetic microwave absorber as the main body, which converts electromagnetic waves emitted by electronic equipment into heat energy in the form of insulation loss, magnetic loss and impedance loss to reduce electromagnetic radiation. It has the characteristics of high permeability, optional frequency band width, etc., and can be developed according to specific frequency bands.

Absorbing material at 10MHz? It has good absorption characteristics in the 6GHz range, which can avoid leakage caused by electromagnetic interference or secondary reflection. Products are mainly absorption patch type, can also be processed into various shapes according to customer requirements. The absorbing material can be used in the cavity of electronic equipment such as laptop computer, mobile phone, communication cabinet, etc.
　　What are the types of absorbing materials?
　　When it comes to solving high frequency electromagnetic interference technologies, shielding solutions are increasingly unable to meet the regulatory requirements. In many devices, the requirements for port Settings, ventilation, and Windows make it impossible for practical shielding methods to form fully shielded cages like Farrah cages. Port sizing technology is a major threat to high frequency devices. Then there is another confusing technology. After the equipment is effectively shielded, the external interference technology has been solved, but there is still electromagnetic interference technology in the shielding system, even if the shielding leads to increased interference, and even leads to the equipment can not work normally.
　　Wave absorbing material is a kind of material which can effectively absorb and attenuate incident electromagnetic wave. It can absorb electromagnetic waves by converting incident electromagnetic waves into heat or other forms of energy through various loss mechanisms of materials.
　　Unlike shielding solutions, its effectiveness lies in reducing the number of interfering electromagnetic waves. It can not only absorb electromagnetic waves alone, but also cooperate with the shielding system to improve the high-frequency efficiency of the equipment. At present, common wave absorbing materials can cope with the electromagnetic interference frequency range of 0.72 GHz to 40 GHz. Higher and lower frequency absorbing materials can also be used. Absorbing materials can be generally divided into coating type, plate type and structural type; The absorption mechanism can be divided into electric absorption type and magnetic absorption type. The absorption structure can be divided into absorption type, interference type and resonance type.
　　The absorption effect of wave-absorbing materials depends on various electromagnetic mechanisms within the medium, such as Debye relaxation, resonance absorption, interfacial relaxation, resonance relaxation of the domain walls of the magnetic medium, electron diffusion and micro-eddy currents. At present, manufacturers and suppliers of wave absorbing materials mainly produce and supply magnetic wave absorbing materials.