Iron based absorbing materialsIt is a new type of electromagnetic wave absorbing material with excellent electromagnetic wave absorption performance and thermal stability. It is mainly composed of magnetic and non-magnetic materials and has a wide range of applications, such as radar stealth, electromagnetic interference suppression, and electromagnetic wave radiation protection.
Composition and preparation methods of iron-based absorbing materials
Iron based absorbing materials are mainly composed of magnetic and non-magnetic materials. Among them, magnetic materials are mainly metal elements such as iron, nickel, cobalt or their alloys, while non-magnetic materials are mainly polymer materials such as resin, polyimide, polystyrene, polyurethane, etc.
The preparation methods of iron-based absorbing materials mainly include the following.
1. Physical mixing method
Mix magnetic and non-magnetic materials in a certain proportion, and uniformly mix the two materials through high-speed stirring or grinding to prepare an absorbing material.
2. Co precipitation method
Mixing salt solutions of magnetic and non-magnetic materials, and preparing absorbing materials through co precipitation.
3. Sol gel method
The microwave absorbing materials prepared by sol-gel method can obtain higher purity and more uniform material structure.
4. Sintering method
Mixing magnetic and non-magnetic materials in a certain proportion, pressing them into blanks, and then preparing absorbing materials through high-temperature sintering.
Performance and Application of Iron based Absorbing Materials
Iron based absorbing materials have good electromagnetic wave absorption performance and thermal stability, and can absorb electromagnetic waves over a wide frequency range, while also having high absorption rate and low reflectivity. It has the following advantages.
1. Broadband absorption performance: Iron based absorbing materials can absorb electromagnetic waves in a wide frequency range and have good absorption performance.
2. Thermal stability: Iron based absorbing materials still have good absorption performance in high temperature environments and can be used for a long time in high temperature environments.
3. Chemical stability: Iron based absorbing materials can withstand the erosion of chemical substances such as acid and alkali, and have strong corrosion resistance.
The applications of iron-based absorbing materials mainly include the following aspects.
1. Radar stealth: Iron based absorbing materials can absorb radar waves, making it difficult for targets to be detected by radar and have a wide range of application prospects.
2. Electromagnetic interference suppression: Iron based absorbing materials can absorb electromagnetic interference waves and reduce the impact of electromagnetic interference on electronic devices.
3. Electromagnetic radiation protection: Iron based absorbing materials can absorb electromagnetic radiation and reduce the harm of electromagnetic waves to the human body.
Iron based absorbing materials are a new type of material with broad application prospects, possessing excellent electromagnetic wave absorption performance and thermal stability. They can be used in fields such as radar stealth, electromagnetic interference suppression, and electromagnetic wave radiation protection.
