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A deep analysis of whether the absorbing material is conductive

Author:admin   AddTime:2021-06-30

First of all, the editor can clearly explain to everyone that the absorbing material is not conductive, so why is the absorbing material not conductive?
The absorbing material is a kind of advanced shielding material and material with magnetic function. It can absorb and transform electromagnetic wave radiation and purify the electromagnetic space environment to the greatest extent. From the structure and composition of the absorbing material, we can also know that the absorbing agent of the absorbing material is mainly made of nickel-iron alloy and some trace elements as raw materials. This alloy has a high magnetic permeability and can quickly absorb electromagnetic waves. In addition, the nickel-iron alloy has a relatively large resistivity, and the surface impedance value of the overall wave-absorbing material is 1×10-6, which is a non-conducting material, so the wave-absorbing material is insulated and non-conductive.
Next, let's analyze why it is not conductive:

1. The traditional shielding material is a kind of conductive shielding product. Its shielding method is reflective shielding, that is, the conductor has a reflection effect on electromagnetic waves. The more conductive the metal conductor, the lower the resistivity, the stronger the reflection of electromagnetic waves, such as copper and aluminum. , Silver, etc., because this conductive shielding material can only suppress electromagnetic waves to minimize electromagnetic radiation and interfere with other originals, but it has not completely eliminated electromagnetic radiation. As the rated frequency of electronic product chips becomes higher and higher, the radiation becomes more and more It is too big, so new shielding materials must come out to solve this problem. The generation of absorbing materials is an advanced shielding method. The main raw material is nickel-iron alloy with very high resistivity, which can quickly absorb clutter to achieve the purpose of shielding. Does not have electrical conductivity.



2. The absorbing material is a magnetic functional material with nickel-iron alloy as the base material, so let's take a look at the common resistivity of metal materials:
Material resistivity (Ω m)
1. Gold 2.40×10-8
2. Silver 1.65 ×10-8
3. Copper 1.75 ×10-8
4. Aluminum 2.83 ×10-8
5. Iron 9.78 ×10-8
6. Tungsten 5.48 ×10-8
7. Platinum 2.22 ×10-7
8. Mercury 9.6 ×10-7
9. Manganese copper 4.4 ×10-7
10. Constantan 5.0 ×10-7
11. Nickel-chromium alloy 1.0 ×10-6
12. Fe-Cr-Al alloy 1.4 ×10-6
13. Nickel-iron alloy 1.6 ×10-6
From the above comparison, it can be seen that the resistivity of the metal is small, and the resistivity of the alloy is large. The resistivity of the nickel-iron alloy is as high as 1.6×10-6, and the resistivity is very large. It is a non-conducting material. Non-conductive.

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