How to reduce the reflectivity of low permeability absorbing materials and improve absorption efficiency

In the development of modern electronic devices, the application of absorbing materials has become increasingly important. Especially in the field of electromagnetic compatibility (EMC), low permeability absorbing materials play an important role in reducing electromagnetic interference and electromagnetic wave reflection. However, how to reduce the reflectivity of these materials and improve their absorption efficiency remains one of the current research challenges. This article will explore several effective methods for reducing the reflectivity of low permeability absorbing materials, and verify the effectiveness of these methods through experimental data and comparison. Meanwhile, we will introduce Advanced Institute (Shenzhen) Technology Co., Ltd. and itsResearch Platinum brand low magnetic permeability absorbing materialThe application.

1、 Basic principles of absorbing materials

The shielding mechanism of electromagnetic waves by absorbing materials mainly depends on the reflection and absorption of the material. Low permeability absorbing material is a material that can absorb most of electromagnetic energy with less reflection. This material converts electromagnetic energy into thermal energy or other forms of energy, thereby achieving the purpose of electromagnetic shielding. commonLow permeability absorbing materialIncluding carbon based materials, ferrites, polymer composites, etc.

2、 Methods to reduce reflectivity

1. Reasonable selection of absorbing materials

   Different absorbing materials have different absorption frequency bands and absorption capabilities. Reasonable material selection is the first step in reducing reflectivity. For example,ferritesCarbon based materials have good absorption performance in the high frequency range, while carbon based materials exhibit excellent performance in the low frequency range.

2. Optimize the design and use of materials

   • Adjusting thickness and shape: By adjusting the thickness and shape of the absorbing material, its absorption effect can be optimized. Generally speaking, increasing the thickness of the material helps to improve the absorption performance, but it also increases the cost and weight. Therefore, optimization needs to be carried out according to specific application scenarios.
   • 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. For example, by combining high permeability materials with low permeability materials, complementary effects can be formed.

3. Adding conductive agents and preparing composite materials

   • Addition of conductive agent: The addition of conductive agent can effectively improveAbsorberThe absorption performance. 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.
   • Preparation of composite materials: Composite materials are composed of two or more materials mixed in a certain proportion, and have excellent comprehensive performance characteristics. 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.

3、 Experimental data and comparison

To verify the effectiveness of the above method, we conducted the following experiments:

1. Experimental materials:
   • Research Platinum brand low magnetic permeability absorbing material(Sample A)
   • Research Platinum Brand Low Magnetic Permeability Absorbing Material Conductive Carbon Black (Sample B)
   • Research Platinum Brand Low Magnetic Permeability Absorbing Material Graphene Composite Material (Sample C)
2. Experimental conditions:
   • Test frequency range: 2-18 GHz
   • Test method: Measure the reflection coefficient using a vector network analyzer
3. Experimental results:
   • Sample A: In the range of 2-18 GHz, the average reflection coefficient is -10 dB
   • Sample B: In the range of 2-18 GHz, the average reflection coefficient is -15 dB
   • Sample C: In the range of 2-18 GHz, the average reflection coefficient is -20 dB

Experimental data shows that by adding conductive carbon black and graphene composite materials, the reflectivity of low permeability absorbing materials can be significantly reduced, and the absorption efficiency can be improved. Sample C has the lowest reflection coefficient, indicating its optimal absorption performance.

4、 Advanced Institute (Shenzhen) Technology Co., Ltd.'s Research Platinum brand absorbing materials

Advanced Institute (Shenzhen) Technology Co., Ltd. is a high-tech enterprise specializing in the fields of thermal conductive materials, shielding materials, conductive silver paste, and more. itsResearch Platinum brand low magnetic permeability absorbing materialIt has been widely used in the field of electromagnetic compatibility (EMC). This material has excellent absorption performance and stability, which can significantly reduce the reflection of electromagnetic waves and improve the electromagnetic compatibility of equipment.

By adopting multi-layer structure design, adding conductive agents, and preparing composite materials, we can further optimize the performance of the low magnetic permeability absorbing material of Yanbo brand. For example, combining graphene with low magnetic permeability absorbing materials from the Research Platinum brand can significantly improve absorption efficiency and reduce reflectivity.

5、 Conclusion

Low permeability absorbing materials play an important role in the field of electromagnetic compatibility. By selecting materials reasonably, optimizing design and use, adding conductive agents, and preparing composite materials, we can effectively reduce their reflectivity and improve their absorption efficiency. Experimental data shows that the addition of conductive carbon black and graphene composite materials can significantly improve the performance of low permeability absorbing materials under the research platinum brand. The research platinum brand absorbing materials of Advanced Institute (Shenzhen) Technology Co., Ltd. have broad application prospects in this field.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.