How to solve the absorption efficiency problem of high permeability absorbing materials in the low frequency range?

Brief introduction

High permeability absorbing materials play an important role in wireless communication, radar stealth, electromagnetic compatibility, and other fields due to their excellent electromagnetic shielding and absorbing properties. However, in the low frequency range, the absorption efficiency of such materials is often unsatisfactory, which limits their wider applications. This article aims to explore strategies for solving the absorption efficiency problem of high permeability absorbing materials in the low frequency range, and introduce the innovative achievements of Advanced Institute (Shenzhen) Technology Co., Ltd. in this field, especially itsResearch Platinum brand high magnetic permeability absorbing materialThe application.

2、 The challenge of low-frequency absorption efficiency

1. Electromagnetic wave characteristics

Low frequency electromagnetic waves have longer wavelengths, stronger penetration capabilities, and are difficult to be effectively absorbed by materials. Although high permeability materials can effectively absorb electromagnetic waves through magnetic loss mechanisms in the high frequency range, the effectiveness of this mechanism is greatly reduced in the low frequency range.

2. Material characteristic limitations

high-permeability materialThe real part of magnetic permeability in the low frequency range may decrease with decreasing frequency, resulting in a weakened ability to bundle magnetic flux and thus affecting absorption efficiency. In addition, the imaginary part of magnetic permeability (magnetic loss) may not be sufficient to effectively convert electromagnetic wave energy into thermal energy.

3、 Solution strategy

1. Material formula optimization

Add low-frequency absorbers: Introduce absorbers with good absorption ability for low-frequency electromagnetic waves in the material formula, such as specific types of ferrites, magnetic nanoparticles, etc. These absorbers can provide additional magnetic loss mechanisms in the low frequency range, enhancing the material's absorption capacity.

Composite structure design: Prepare composite absorbing materials by combining electrical loss materials and magnetic loss materials. Electrical loss materials (such as carbon black, graphene, etc.) can provide effective electrical loss mechanisms in the low frequency range, and work together with magnetic loss materials to broaden the absorption frequency band and improve the absorption efficiency in the low frequency range.

2. Structural design and optimization

Multi layer structure design: Adopting a multi-layer structure design, the absorption effect of low-frequency electromagnetic waves is enhanced through the reflection and interference of electromagnetic waves between different layers. For example, the surface layer can be designed with high magnetic permeability material for concentrating magnetic flux, the middle layer with electrical loss material for absorbing electromagnetic wave energy, and the bottom layer with a reflective layer to prevent electromagnetic wave transmission.

Gradient structure design: Utilizing the characteristics of material dielectric constant and magnetic permeability varying with thickness gradient, designGradient structured absorbing materialsThis structure can absorb and reflect electromagnetic waves multiple times at different depths, improving low-frequency absorption efficiency.

3. Improvement of preparation process

By improving the preparation process, such as using finer powder processing techniques, optimizing sintering conditions, etc., the density and uniformity of the material can be increased, thereby reducing internal defects and interface scattering, and improving low-frequency absorption efficiency.

4、 Innovation Practice of Advanced Institute (Shenzhen) Technology Co., Ltd

Advanced Institute (Shenzhen) Technology Co., Ltd. has achieved significant results in solving the low-frequency absorption efficiency problem of high permeability absorbing materials. itsResearch Platinum brand high magnetic permeability absorbing materialThe low-frequency absorption efficiency has been improved through the following innovative practices:

1. Customized formula: Develop customized absorbing material formulas based on the low-frequency electromagnetic wave characteristics of different application scenarios. By optimizing the types and contents of absorbents, efficient absorption of materials in the low-frequency range can be achieved.

2. Advanced structural design: Using advanced processing technologies such as multi-layer co extrusion and gradient molding, high magnetic permeability absorbing materials with complex structures are prepared. These materials can exhibit excellent absorption performance in different frequency bands, especially with significant improvements in the low frequency range.

3. High quality assurance: Strictly control the quality of raw materials and preparation processes to ensure stable and reliable performance of each batch of products. At the same time, we provide customized services and technical support to help customers solve problems in practical applications.

5、 Conclusion

solveHigh permeability absorbing materialThe issue of absorption efficiency in the low-frequency range is a complex and important topic. Through efforts in material formula optimization, structural design and optimization, and preparation process improvement, the low-frequency absorption efficiency of materials can be effectively improved. Advanced Institute (Shenzhen) Technology Co., Ltd. has achieved significant results in this field, and its research on platinum brand high permeability absorbing materials has provided strong support for solving the problem of low-frequency electromagnetic wave interference. In the future, with the continuous advancement of technology and the continuous expansion of application scenarios, the absorption efficiency of high permeability absorbing materials in the low frequency range will be further improved.

The above data is for reference only, and specific performance may vary due to production processes and product specifications.