Explanation

A type of coating that allows the target to reflect, transmit, and absorb electromagnetic or acoustic waves as closely as possible to its background. Most of them are applied with coatings coating process. coatings is composed of adhesive, filler, modifier and diluents. filler is a kind of parametric powder raw material to adjust the interaction characteristics with electromagnetic wave or acoustic wave, and different characteristic parameters are required according to different stealth objects: ① in order to resist ultraviolet camera photography, the coating is required to have a corresponding high ultraviolet reflectance; ② Near infrared reconnaissance requires the coating to have near infrared spectroscopy reflectivity as consistent as possible with its background. In addition, several kinds of coatings are often coated on the same target according to specific patterns to implement deformation camouflage to distort the logo image and improve the stealth effect; ③ In order to improve the thermal infrared stealth effect, low emissivity coating or heat insulating coating is generally used to reduce the intensity of thermal infrared radiation emitted by the target and make it adapt to its background; ④ To compete with radar detection technology, coatings are required to have a high absorption rate of radar waves. One of the most frequently used methods is to introduce fillers in coatings that are easy to convert radar wave energy into heat energy or other energy. The second method is to control the coating thickness to achieve stealth through the interference cancellation principle of the reflection wave of the coating surface layer and the reflection wave of the bottom layer; ⑤ As for the sound absorption coating, it is required to reduce the reflection of the target on the sonar shock wave as much as possible. The stealth coating is mainly used for military camouflage and is developing towards a multi-functional stealth coating with more than two stealth functions. It can also have broad application prospects in civil fields such as high-rise buildings and microwave ovens.

Classification