Preparation and Properties of Fe3O4/Strontium Ferrite Composite Absorbing Materials

In today's information society, the application of electromagnetic waves is ubiquitous, and the resulting electromagnetic pollution problem is becoming increasingly serious. In this context, efficient and environmentally friendlyAbsorberBecoming a hot topic for researchers to study. Among them, Fe3O4/strontium ferrite composite absorbing materials have attracted the attention of many researchers due to their unique properties and wide application prospects.

1、 Preparation process of composite materials

The key to the preparation process of Fe3O4/strontium ferrite composite absorbing materials lies in how to achieve uniform mixing of the two materials at the microscopic level while retaining their respective excellent properties. Researchers have successfully prepared uniformly distributed Fe3O4 particles using F127 as a surfactant and template. This method not only avoids particle aggregation, but also endows Fe3O4 particles with unique structure and properties. Subsequently, through a sophisticated composite process, Fe3O4 was combined with strontium ferrite to form a high-performance composite absorbing material.

2、 Performance characteristics of composite materials

1. Absorption performance

The absorption performance of Fe3O4/strontium ferrite composite absorbing materials is influenced by the ratio of each component in the material, as well as the type and structure of the material. Research has shown that when the content of Fe3O4 particles is 40%, the absorption performance of the composite material reaches its optimal level. This is mainly due to the addition of F127, which creates a unique structure for Fe3O4 particles, facilitating the reflection and interference loss of electromagnetic waves inside the material. In addition, the high magnetic permeability and low hysteresis loss of strontium ferrite provide strong guarantees for the absorption performance of composite materials.

2. Magnetic properties

Fe3O4, as a common magnetic material, has excellent magnetic properties. In composite materials, the combination of Fe3O4 and strontium ferrite further enhances the magnetic properties of the composite material. This excellent magnetic property makes composite materials have broad application prospects in fields such as electromagnetic shielding and magnetic recording.

3. Environmental adaptability

Fe3O4/strontium ferrite composite absorbing materials have good environmental adaptability. It can maintain stable performance in high temperature, high humidity, low temperature, and dry environments. This environmental adaptability makes composite materials more competitive in practical applications.

3、 Application fields of composite materials

1. Military field

In the military field, Fe3O4/strontium ferrite composite absorbing materials can be used to make absorption walls in anechoic chambers, match loads in microwave systems, etc. By reducing the reflection and scattering of electromagnetic waves, the stealth performance of targets is improved, providing strong support for military operations.

2. Aerospace field

In the aerospace field, composite absorbing materials can be used to reduce the radar cross-sectional area of aircraft and decrease their likelihood of being detected by radar. At the same time, it can also reduce electromagnetic interference and improve the stability of the aircraft's communication and navigation systems.

3. Communication field

In the field of communication, with the rapid development of wireless communication technology, the electromagnetic environment is becoming increasingly complex. Fe3O4/strontium ferrite composite absorbing materials can effectively absorb and reduce electromagnetic interference, improving the stability and reliability of communication systems.

4、 Conclusion

Fe3O4/strontium ferrite composite absorbing materialWith its unique preparation process and excellent performance characteristics, it has shown broad application prospects in military, aerospace, communication and other fields. With the deepening of research and continuous advancement of technology, it is believed that this composite material will play a more important role in the future.