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What is the difference between electromagnetic shielding material and absorbing material?

Author:admin   AddTime:2020-07-01


Shielding material is a kind of material that can isolate the metal between two space areas to control the induction and radiation of electric field, magnetic field and electromagnetic wave from one area to another. Specifically, it is the material used to make shielding body. The shielding body surrounds the components, circuits, components, cables or interference sources of the whole system, prevents interference from electromagnetic fields from spreading outward, and shields the receiving circuits, devices or systems to prevent them from being affected by external electromagnetic fields. For example, copper tape and conductive cloth tape are widely used.

Absorbing material refers to a kind of material that can absorb the electromagnetic wave energy projected on its surface and reduce the reflection of electromagnetic wave. For example, "a clay ox goes into the sea" has no sound. It can absorb electromagnetic wave by transforming the incident electromagnetic wave into heat energy or other energy forms through various loss mechanisms of materials.

What is the difference between electromagnetic shielding material and absorbing material?
So the principle of absorbing material and shielding material is different. Generally speaking, absorbing material is to convert electromagnetic wave into heat and prevent electromagnetic wave from reflecting on its surface. However, shielding material mainly prevents electromagnetic wave from passing through and can reflect it to other directions.

The main difference between absorbing materials and electromagnetic shielding materials lies in their application purposes. Taking military equipment as an example, the absorbing material is mainly used for stealth protection of equipment. By adjusting the impedance matching performance and the material absorbing property, the electromagnetic wave is absorbed. At this time, the electromagnetic wave is lost in various ways to minimize the reflection. Electromagnetic shielding materials are mainly used to protect certain equipment from external electromagnetic interference. The processing methods of electromagnetic wave can be absorption or reflection.


Absorbing material: www.goodsmaterial.com


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