Graphene mesh/double-layer metal mesh transparent electromagnetic shielding device having bidirectional wave-absorbing effect
A graphene mesh, electromagnetic shielding technology, applied in the fields of magnetic field/electric field shielding, electrical components, metal layered products, etc., can solve the difficulty of taking into account the mutual constraints of high light transmittance and strong microwave shielding efficiency, transparency and conductive shielding ability , secondary pollution and other problems, to achieve good light transmission and shielding performance, microwave shielding efficiency and reflectivity improvement, low electromagnetic reflection effect
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[0050] The electromagnetic shielding device is composed of a transparent absorbing layer A3, a transparent medium A4, a metal grid A5, a transparent medium B6, a metal grid B7, a transparent medium C8, and a transparent absorbing layer B9, which are sequentially overlapped and arranged in parallel; the transparent absorbing layer A3 is composed of a single layer of graphene grid film A12, a transparent medium D13, and a single layer of graphene grid film B14 arranged in parallel in sequence, and the transparent absorption layer B9 is composed of a single layer of graphene grid film C15, The metal mesh A5 and the metal mesh B7 arranged in parallel to each other constitute a transparent reflective layer.
[0051] The technical effect of the present invention is: when the electromagnetic shielding efficiency of the double-layer metal grid is 29.8dB, if the radio frequency radiation comes from the outside of the transparent absorption layer A3 of the electromagnetic sh...
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