Unveiling the Mysterious Preparation Journey of Nickel Zinc Ferrite Absorbing Coatings

In today's rapidly developing technology,AbsorberAs a key element of stealth technology and electromagnetic compatibility performance, it is gradually entering people's field of vision. Among them, nickel zinc ferrite absorbing coatings have received widespread attention as an efficient and broadband absorbing material. So, how is this magical coating prepared? Next, let's unveil the mystery of the preparation of nickel zinc ferrite absorbing coatings together.

1、 Selection and matching of raw materials

The preparation of nickel zinc ferrite absorbing coatings relies on carefully selected raw materials. The selection of basic raw materials such as cobalt powder, iron nitrate, nickel nitrate, and zinc nitrate directly affects the performance of the final coating. In addition, the addition of auxiliary raw materials such as polyethylene glycol, sodium silicate, polyacrylamide, sodium pyrophosphate, and lanthanum chloride injects a stimulant into the performance improvement of the coating. The combination of these ingredients is like a carefully prepared delicious dish, every step is crucial.

2、 Treatment of Silane Coupling Agent and Doping of Cobalt Powder

During the preparation process, silane coupling agents are used to treat cobalt powder, which not only enhances the binding force between cobalt powder and nickel zinc ferrite, but also provides good conditions for subsequent doping modification. The doping of cobalt powder further improves the performance of nickel zinc ferrite, laying a solid foundation for its excellent absorption performance in a wide frequency range.

3、 Introduction of Lanthanum Chloride Composite Silica Sol

The introduction of lanthanum chloride composite silica sol in the key stage of coating preparation is like a finishing touch, injecting new vitality into the performance improvement of coatings. The interweaving effect between polyacrylamide and amorphous silica layer, as well as the chelation effect between lanthanum ions and silica layer, not only significantly increases the density of the sol, but also fills the residual gaps of doped nickel zinc ferrite, effectively reducing the absorption blind spot. These changes increase the net magnetic moment of the absorbing particle structure, enhance the superexchange effect with the tetrahedral gap magnetic moment, thereby increasing magnetic loss and improving the absorbing performance.

4、 Process control and optimization

In addition to the selection and combination of raw materials, process control during the preparation process is also crucial. The precise control of parameters such as temperature, time, and stirring speed directly affects the uniformity and stability of the coating. Through continuous process optimization, the performance of the coating can be optimized to meet the needs of different application scenarios.

5、 Performance testing and quality control

Completed preparationNickel zinc ferrite absorbing coatingIt requires strict performance testing and quality control. This includes the evaluation of the absorption performance, stability, weather resistance, and other aspects of the coating. Only by passing these tests can we ensure that the quality of the coating meets the standards and provide strong guarantees for subsequent applications.

conclusion

The preparation of nickel zinc ferrite absorbing coatings is a complex process that integrates chemical, physical, and process technologies. Through careful selection of raw materials, treatment with silane coupling agents, introduction of lanthanum chloride composite silica sol, process control and optimization, as well as performance testing and quality control, we can obtain high-performance nickel zinc ferrite absorbing coatings. This type of coating has broad application prospects in military stealth, electromagnetic compatibility, and other fields, bringing more possibilities to our lives.