Magnetic conductive nano-metal/carbon aerogel wave absorbing material and preparation method thereof

Abstract

The invention discloses a magnetic conductive nano-metal / carbon airgel absorbing material and the preparation method thereof. The material is formed and prepared from carbon airgel which undergoes sensitization, electroless plating, freeze drying or supercritical drying. The carbon airgel is composed of magnetic metal nano particles and a porous carbon skeleton. The magnetic metal nano particles are distributed evenly on the surface of the carbon airgel and have magnetic force, electrical conductivity, low density, a high specific surface area and a nano-porous structure. Due to the above characteristics, the carbon airgel absorbing material has a good prospect in the field of electromagnetic wave absorption, and it can absorb the wide bands of an electromagnetic wave effectively even with low use amount.

Description

technical field

[0001] The invention relates to the technical field of preparation of wave-absorbing materials, in particular to a magnetically conductive nano-metal / carbon airgel wave-absorbing material and a preparation method thereof. Background technique

[0002] With the widespread application of optical, electrical, magnetic and other reconnaissance technologies in the military field, the corresponding anti-reconnaissance technology has received more and more attention. Among them, electromagnetic absorbing materials can effectively reduce the radar cross section of weapons and equipment and improve their survival and defense capabilities without changing the shape design of the weapon system, and have become a research hotspot for the military of various countries. An ideal absorbing material needs to meet the requirements of "thin thickness, light weight, wide absorption frequency, and strong absorption capacity". Traditional absorbing materials mainly pass through ...

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