Honeycomb type absorbing materials can be applied in fields such as electromagnetic wave isolation, absorption, shock absorption, and sound insulation

    Electromagnetic wave absorbing materialsNot only can it endow weapons and equipment with radar stealth performance, but it can also improve the level of national defense security; It can also absorb electromagnetic wave pollution from the surrounding environment, preventing people from being harmed by electromagnetic waves. Therefore, absorbing materials have great application value in both military and civilian fields.

Stealth absorbing materialThe basic knowledge includes the following five aspects: radar stealth principle, electromagnetic wave absorption principle, development history of absorbing materials, evaluation of material absorbing performance, and polymer based composite absorbing materials.

The definition of absorbing material: Absorbing material refers to the ability to convert electromagnetic waves projected onto its surface into thermal energy or other forms of energy through dielectric loss.

This leads to two basic conditions for absorbing materials:

1. The incident electromagnetic waves should enter the interior of the material to the maximum extent possible, rather than being reflected on its surface, in order to meet the impedance matching of the material;

2. The electromagnetic waves entering the interior of the material are almost completely attenuated, known as attenuation matching.

When the incident wave reaches the surface of the material, a portion of it will be reflected away, and only the electromagnetic wave that enters the interior of the material may be attenuated. Therefore, good absorbing materials hardly reflect electromagnetic waves, but absorb them internally and completely attenuate them. To achieve the goal of "closing the door" on electromagnetic waves, materials must meet the two basic conditions mentioned above very well. These two basic conditions have almost become the guiding principles for scientists to design absorbing materials.

     Honeycomb type absorbing materialIt is a new type of electromagnetic wave absorbing material with a honeycomb like structure composed of many small hexagonal units. Honeycomb absorbing materials have advantages such as lightweight, high strength, strong compressive strength, corrosion resistance, high temperature resistance, and easy processing.

Honeycomb type absorbing materials can be applied in fields such as electromagnetic wave isolation, absorption, shock absorption, and sound insulation. It can effectively absorb wideband electromagnetic waves, thereby reducing electromagnetic wave interference and reflection. Meanwhile, honeycomb absorbing materials can also be used in the production of antennas, radar absorbing materials, aerospace and other fields.

Honeycomb absorbing materials are generally made of foam, resin, metal and other materials to form a honeycomb structure, and then coated with a layer of absorbing materials on the surface. Common absorbing materials include carbon black, ferrite, alloys, etc.

In summary, honeycomb absorbing materials have broad application prospects and can be applied in fields such as electronics, communications, aerospace, automotive, and construction.