Effect of Absorbing Coating on Shielding Effectiveness of Electromagnetic Shielding Fabric

In order to get better effects of electromagnetic protection, the study on the overall shielding effectiveness of electromagnetic shielding fabric by absorbing wave coating is paid more and more attention [1]. But up to now, the influence of different content and kinds of absorbing coating on the shielding effectiveness of electromagnetic shielding fabric has not been clearly defined. In the range of 1G-18G, The article uses DR-SO₄ window shielding efficiency test box to explore the effect of different content of carbon nanotube powder, graphene powder and nano nickel powder coating on the shielding effectiveness of stainless steel electromagnetic shielding fabrics [2]. Through data to analysis this question. In the comparative test of different contents of the same material, At the 4000 MHz band, All three materials' value have peaked. Carbon nanotubes: The highest shielding effectiveness is 20%. Its value is about 72 dB. Nano nickel powder: The nickel powder coating content of 16% has the highest shielding effectiveness. Nano-graphene: The coated fabric with a content of 20% has the highest shielding effectiveness. This study has initially revealed the effect of absorbing coatings on the shielding effectiveness of electromagnetic shielding fabrics. It is important to design, produce and evaluate high-performance electromagnetic shielding fabrics.