Preparation and Performance Exploration of Carbonyl Iron Polyaniline Composite Absorbing Materials

In today's era of rapid technological development,AbsorberAs a key component of electromagnetic shielding and stealth technology, its research and application are increasingly valued. Carbonyl iron (CIP), as a magnetic material with excellent hysteresis loss performance, is combined with polyaniline (PANI), a lightweight and highly conductive polymer material, to form a carbonyl iron polyaniline composite absorbing material, which exhibits great potential in absorbing properties. This article will delve into the mysteries of carbonyl iron polyaniline composite absorbing materials from two dimensions: preparation methods and performance analysis.

1、 Innovation in Preparation Methods

There are various methods for preparing carbonyl iron polyaniline composite absorbing materials, among which in-situ polymerization is highly favored due to its simple operation, low cost, and excellent material properties. The core of this method is to mix carbonyl iron powder with aniline monomer under appropriate conditions, and through the action of an initiator, the aniline monomer undergoes polymerization reaction on the surface of carbonyl iron powder, forming a polyaniline coating layer. The composite material prepared by this method not only maintains the high hysteresis loss performance of carbonyl iron, but also endows the material with good electrical conductivity and environmental stability.

It is worth noting that optimizing the process conditions during the preparation process is crucial for improving the performance of composite materials. For example, precise control of the morphology and properties of composite materials can be achieved by adjusting parameters such as hydrochloric acid concentration, carbonyl iron powder dosage, spatial stabilizer PVP dosage, doping acid type, and pre stirring time. Research has shown that when the mass ratio of carbonyl iron powder to polyaniline reaches 2:1, the dielectric loss tangent angle of the composite material reaches its optimal state, exhibiting excellent absorbing performance.

2、 Dimensions of Performance Analysis

1. Absorption performance

Carbonyl iron polyaniline composite absorbing materials exhibit excellent absorbing properties in the microwave frequency range. Through testing, it was found that the material has significantly improved absorption in the Ku band (12-18GHz), especially when the coating thickness is 2mm, it can still meet the microwave attenuation requirements for use. This excellent absorbing performance is mainly due to the synergistic effect between the hysteresis loss of carbonyl iron and the conductivity loss of polyaniline, which causes multiple scattering and energy loss of electromagnetic waves inside the material.

2. Environmental stability

Polyaniline, as a polymer material, has good environmental stability. After combining with carbonyl iron, the temperature resistance and corrosion resistance of the composite material are significantly improved. This enables the carbonyl iron polyaniline composite absorbing material to maintain stable absorbing performance even in harsh environments, providing strong support for practical applications.

3. Lightweight

The carbonyl iron polyaniline composite absorbing material has a lower density, mainly due to the lightweight properties of polyaniline. Compared to traditional metal absorbing materials, this composite material achieves lightweighting while maintaining excellent absorbing performance, providing a new direction for the development of absorbing stealth technology.

3、 Future prospects

With the continuous advancement of technology and the increasing demand,Carbonyl iron polyaniline composite absorbing materialThe research and application of this technology will usher in a broader development space. In the future, we can continuously improve the performance and stability of composite materials by further optimizing the preparation process, exploring new composite methods and modification techniques. At the same time, by combining modern testing techniques and calculation methods, in-depth research is conducted on the absorption mechanism and performance control mechanism of composite materials, providing a solid theoretical basis and technical support for the development of absorption stealth technology.