How to optimize the electromagnetic loss mechanism of low permeability absorbing materials to improve absorption efficiency?

Low permeability absorbing materialIt is a material that can absorb most electromagnetic energy with less reflection, and its performance optimization is a problem involving multiple fields such as materials science, electromagnetics, and engineering applications. This article aims to explore how to improve the absorption efficiency of low permeability absorbing materials by optimizing the electromagnetic loss mechanism, and specifically mentions the contribution of Advanced Institute (Shenzhen) Technology Co., Ltd. in this field.

1、 Reasonable selection of materials

Choosing suitable low permeability absorbing materials based on the electromagnetic wave frequency band of specific application scenarios is the foundation. Different absorbing materials have different absorption frequency bands and absorption capabilities. For example, ferrite materials have good absorption performance in the high frequency range, while carbon based materials perform well in the low frequency range. The research platinum brand low permeability absorbing material provided by Advanced Institute (Shenzhen) Technology Co., Ltd. has been widely used in the field of electromagnetic compatibility (EMC), which can significantly reduce the reflection of electromagnetic waves and improve the electromagnetic compatibility of equipment.

2、 Optimize the microstructure and shape of materials

1. Microstructure: By adjusting the microstructure parameters such as grain size and grain boundary characteristics of the material, the magnetic and absorbing properties of the material can be significantly affected. Refining grain size can reduce hysteresis loss and improve magnetic permeability; Optimizing grain boundary characteristics can enhance the absorbing ability of materials.
2. Shape optimization: By optimizing the shape of materials, such as using cones, pyramids, corrugated plates, pyramid interlayers, etc., it is possible to effectively reduce the reflection of electromagnetic waves and improve absorption efficiency. For example, the corrugated plate has a structure where two inclined planes intersect, which is conducive to multiple wave absorption; The four inclined surfaces of the pyramid intersect, and the effective absorption range varies depending on the height of the pyramid (absorber thickness).

3、 Multi layer structure design

By adopting a multi-layer structure design and combining the advantages of different materials, the overall absorption efficiency can be significantly improved. The composite use of high permeability materials and low permeability materials can form complementary effects, thereby more effectively absorbing electromagnetic waves. This design can not only reduce the reflection of electromagnetic waves, but also broaden the absorption frequency band of absorbing materials.

4、 Add conductive agent

The addition of conductive agents can effectively improve the absorption performance of absorbing materials. Common conductive agents include conductive carbon black, metal powder, etc. Adding conductive agents can increase the conductivity and permeability of materials, thereby improving their absorption performance. However, the amount of conductive agent added needs to be controlled within a certain range, as too much or too little may affect the absorption effect.

5、 Preparation of composite materials

Composite materials are made by mixing two or more materials in a certain proportion, and have the characteristic of excellent comprehensive performance. For example, combining graphene with polymers can significantly improve the absorption performance. Graphene, as an emerging nanomaterial, has attracted widespread attention in the field of microwave absorption.Advanced Institute (Shenzhen) Technology Co., LtdBy optimizing the preparation process and parameters of composite materials, the performance of absorbing materials has been further improved.

6、 Realize impedance matching

Impedance matching refers to the input impedance of a material being equal or similar to the impedance of free space, making it easier for electromagnetic waves to enter the interior of the material and be absorbed. By adjusting parameters such as material composition, structure, and thickness, impedance matching can be achieved, thereby reducing electromagnetic wave reflection and improving absorption efficiency.

7、 Optimize material loss characteristics

Try to increase the imaginary part of the electromagnetic parameters of the material as much as possible to dissipate more incident electromagnetic waves. This can be achieved by enhancing the dielectric and magnetic loss properties of the material. For example, using materials with high dielectric constant and magnetic permeability, or improving the material's loss ability through doping, modification, and other methods.

8、 Adopting advanced preparation technology

The preparation process has a significant impact on the properties of materials. By optimizing the preparation process parameters such as temperature, pressure, time, etc., the performance and stability of the material can be ensured. In addition, introducing automated production lines to reduce the impact of human factors on material properties is also an effective way to improve yield and material performance.

optimizationLow permeability absorbing materialThe electromagnetic loss mechanism needs to be approached from multiple aspects, including rational material selection, optimization of material microstructure and shape, adoption of multi-layer structure design, addition of conductive agents, preparation of composite materials, impedance matching, optimization of material loss characteristics, and adoption of advanced preparation techniques. These methods can be used alone or in combination to achieve the best absorption effect. Advanced Institute (Shenzhen) Technology Co., Ltd. has provided strong support and reference for its research and application practice in this field.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.