Becaused of the special structure and dielectric properties, carbon nanotubes exhibit strong broadband microwave absorption properties. They also have the characteristics of light weight, adjustable electrical conductivity, strong high temperature oxidation resistance and stability. CNTs are promising and ideal microwave absorbers, which can be used in stealth materials, electromagnetic shielding materials or anechoic chamber absorbing materials.
Carbon nanotubes have a stealth effect on infrared and electromagnetic waves, but the reflected signal strength obtained by infrared detectors and radars is greatly reduced, so it is difficult to find the detected target, which plays a stealth role.

Carbon nanotubes have great aspect ratio and excellent electrical and magnetic properties, and exhibit excellent performance in electrical and absorbing shielding. Therefore, increasing importance is attached to research and development of conductive fillers as electromagnetic shielding coatings. This has high requirements on the purity, productivity and cost of carbon nanotubes. The carbon nanotubes produced by Hongwu Nano Factory, including single-walled and multi-walled CNTs, have a purity of up to 99%. The dispersion of carbon nanotubes in the matrix resin and whether it has good affinity with the matrix resin become a direct factor affecting the shielding performance. Hongwu Nano also supplies a customized carbon nanotube dispersion.