What is the difference between flexible absorbent material and shielding materials

Speaking of shielded rooms, you may not be unfamiliar with them. Shielded rooms can block the diffusion of indoor electromagnetic radiation to the outside world, and strong electromagnetic radiation sources should be shielded and isolated. The shielding room is made of magnetic materials. The parameter to measure the magnetic permeability of the material is the magnetic permeability. The higher the magnetic permeability, the better the shielding effect. There are many materials in the construction of shielded rooms, such as flexible absorbent material and shielding materials, so what is the difference between flexible absorbent material and shielding materials?


Flexible absorbent material

Flexible absorbent material refer to a class of materials that can absorb the energy of electromagnetic waves projected on its surface. It converts incident electromagnetic waves into heat energy or other energy forms through various loss mechanisms of materials to achieve the purpose of absorbing electromagnetic waves. In engineering applications, in addition to requiring the flexible absorbent material to have a high absorption rate of electromagnetic waves in a wide frequency band, it is also required to have light weight, temperature resistance, moisture resistance, corrosion resistance and other properties. The absorbing effect of flexible absorbent material is determined by various electromagnetic mechanisms inside the medium, such as Debye relaxation of dielectrics, resonant absorption, resonant relaxation of interface relaxation magnetic medium domain walls, electron diffusion and micro eddy currents.


Shielding material

Shielding materials are a class of materials that can isolate metals between two spatial regions to control the induction and radiation of electric fields, magnetic fields and electromagnetic waves from one region to another. Specifically, it is the material used to make the shield. The shield surrounds the interference source of components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading outward; the shielding body surrounds the receiving circuit, equipment or system to prevent them from being affected by the external electromagnetic field.

Microwave absorber electromagnetic absorber

The difference between flexible absorbent material and shielding materials

The electromagnetic wave of the absorbing material cannot go in and out, but the electromagnetic shielding material does not necessarily reflect the electromagnetic wave, but reduces the amount of the electromagnetic wave reaching the other side of the shielding material through absorption or reflection. Therefore, it can be said that the absorbing material is to make the same side of the absorbing material and the electromagnetic wave emitting source receive as little as possible the reflected electromagnetic waves, and the electromagnetic shielding material is to make the shielding material and the opposite side of the electromagnetic wave emitting source receive as little as possible. The effect of electromagnetic waves.


The difference between the above flexible absorbent material and shielding materials will be shared here. The absorbing materials and shielding materials in the shielding room can effectively shield the low-frequency magnetic field interference sources or sensitive equipment such as power supplies, relays, transformers, motors, and CRTs. The correct use of different types of shielded rooms is also a reliable measure to prevent information from leaking with electromagnetic waves.


What are the different types of electromagnetic flexible absorbent material?

There are many different types of electromagnetic flexible absorbent material available on the market. Some of the most common types are metallic absorbers, carbon absorbers, and ferrite absorbers. Each type of absorber has its own unique properties that make it suitable for certain applications.

Metallic absorbers are made of thin sheets of metal that are installed in between the metal plates of a waveguide. They are effective at absorbing high-frequency waves. Carbon absorbers are made of carbon black, which is a very effective absorber of electromagnetic radiation. They are used in applications where low weight is important, such as in aircraft. Ferrite absorbers are made of a type of ceramic that is composed of iron and ferrite. They are used in applications where high power is required, such as in radar systems.


What are the benefits of using an electromagnetic flexible absorbent material?

There are a number of benefits to using an electromagnetic wave absorbing material. First, it can help protect your electronic equipment from damage. Second, it can help reduce the amount of electromagnetic radiation in your environment. Third, it can help improve your signal reception. Finally, it can help protect your privacy.

flexible absorbent material

Design principles and leadership of absorbing materials

  1. Our electromagnetic wave absorbing materials effectively suppress radiation and noise generated in various frequency ranges.
  2. All series products can improve the distance of electromagnetic signal identification.
  3. Products can be customized according to frequency range and absorption rate.
  4. Our absorbing materials are manufactured according to our own technology and technology accumulation, and are light and flexible.
  5. High absorption loss provides you with a wide range of applications in the field of EMI/EMC, such as mobile phones, LCD cables, military applications and SAR problems


Shenzhen PH Functional Materials is a professional wireless charging sintered ferrite sheet supplier, we have rich production experience and excellent product quality. PH has 11 years of industry experience and products are sold all over the world. Professional quality you can trust. If you are interested in our products, please contact us as soon as possible, we will provide you with the best after-sales service.

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