Abstract

In order to alleviate the threats to human health caused by electromagnetic radiation, it is high time to focus on research into efficient electromagnetic interference (EMI) shielding material. Stainless steel blended (SSB) fabrics are widely used as EMI shielding products. However, they also present bottleneck issues, including poor electromagnetic wave absorbing performance and difficulty in further improving shielding effectiveness (SE). In this work, the electromagnetic SE and electromagnetic wave absorbing performance of SSB fabrics are enhanced by an improved layer-by-layer assembly method using graphene nanoparticles. The experimental results show that the SE of the fabrics is improved by up to 10 dB and becomes more stable after treatment with the improved layer-by-layer assembly method. In addition, the SE and electromagnetic wave absorbing performance of stainless steel/polyester/cotton blended fabrics are improved by increasing the mass fraction of graphene nanoparticles and the number of assembled layers. The SE is increased by up to 10.4 dB in the X- and K-bands when the mass fraction of graphene is 2.5 wt.%, and the number of assembled layers reaches five. The overall increase is about 5 dB. Furthermore, in the frequency range from 3 to 18 GHz, the effective absorption bandwidth reaches 3.6 GHz, and the minimum reflection loss (RL) is –27.5 dB at 14.8 GHz, which corresponds to 99.8% absorption of electromagnetic waves. The study confirms that this method can effectively enhance the SE and wave absorbing performance of SSB fabrics, providing a feasible strategy for designing absorption-based electromagnetic shielding products.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.