Microwave absorbing materialsIt is a material with the ability to absorb the center frequency of the microwave band. In the field of electromagnetics, the microwave band refers to the electromagnetic wave range with frequencies between 300 MHz and 300 GHz, and is also widely used in radar and communication systems. The most commonly used frequencies in the microwave band are 2.45 GHz and 5.8 GHz. Microwave absorbing materials have wide applications in fields such as electronics, communication, and military industry, and can be used for hiding, interference, destruction, camouflage, and other purposes.
Polyurethane fully open pore water-resistant microwave absorbing materialIt is a new type of microwave absorbing material with efficient microwave absorption performance, good water resistance, and good thermal stability. The material is mainly composed of polyurethane foam, carbon black and additives. By controlling the pore structure of the material and the proportion of material components, it can achieve efficient absorption of microwave at different frequencies.
Performance
1. Efficient microwave absorption performance
The absorption mechanism of polyurethane fully porous water-resistant microwave absorbing materials mainly includes resource consumption mechanism and interface dissipation mechanism. The resource consumption mechanism refers to the material absorbing microwaves by converting electromagnetic wave energy into thermal energy; The interface dissipation mechanism refers to the interaction between material particles capable of generating current and an electric field, which leads to the absorption of microwaves. This material achieves efficient microwave absorption at different frequencies by optimizing its pore structure and material composition ratio.
2. Good water resistance
In electronic devices or communication systems, devices or components typically need to operate in humid or rainy environments. At this point, the stability and water resistance of the material are particularly important. The pore structure design of polyurethane fully open pore water-resistant microwave absorbing material is reasonable, and it can work stably in humid or rainy environments, ensuring that the absorption performance is not affected.
3. Good thermal stability performance
In complex working environments, materials need to have good thermal stability to ensure their long-term stability and service life. Polyurethane fully porous water-resistant microwave absorbing materials have good thermal stability, which can resist losses such as oxidation and decomposition at high temperatures, and maintain long-term stability of absorption performance.
application
Polyurethane fully porous water-resistant microwave absorbing materials have broad application prospects and can be used for intelligence concealment, electronic interference, and electromagnetic protection. Its main application areas are as follows:
1. Radar concealment
The principle of radar detecting targets is to emit electromagnetic waves and measure the strength and time of the echo signal to determine the location and characteristics of the target. Polyurethane fully porous water-resistant microwave absorbing material can absorb electromagnetic waves and convert them into thermal energy, effectively reducing electromagnetic echoes and achieving radar concealment.
2. Electromagnetic interference
Polyurethane fully porous water-resistant microwave absorbing material can effectively reduce the propagation distance and amplitude of electromagnetic waves in space, making it difficult to capture and identify electromagnetic signals. In electromagnetic interference and electronic warfare, the use of this material can effectively reduce enemy communication and radar signal interference, improve combat efficiency and concealment.
3. Electromagnetic protection
In modern electronic devices, electromagnetic damage and damage caused by electromagnetic pulses are often threats to their long-term stable operation. Polyurethane fully open pore water-resistant microwave absorbing material can absorb electromagnetic waves, effectively reducing the invasion of electromagnetic waves and protecting electronic devices from electromagnetic damage.
summarize
Polyurethane fully open pore water-resistant microwave absorbing material is a type of material
New type of microwave absorbing materialIt has efficient microwave absorption performance, good water resistance, and good thermal stability. Its application prospects are broad, and it can be used for intelligence concealment, electronic interference, and electromagnetic protection. In the future development, this material will be widely used in fields such as electronics, communication, and military industry.
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