EMI Shielding Effectiveness of CNTs Composites

Li, Ping; Low, Aik; Shan, Yue; Ong, Guat; Yin, Xi

doi:10.4028/www.scientific.net/amm.331.439

Cited by 2 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inspired by its good conductivity, the electromagnetic interference (EMI)-shielding performance and mechanism of CNTs composites have become the subject of much research. One such study reported 9 wt.% CNTs/ 91 wt.% acrylic resin composites containing a remarkable shielding effectiveness (SE) of more than 25 dB in frequency range from 30 MHz to 5 GHz [5], which is mainly a result of the absorption of electromagnetic radiation.…”

Section: Introductionmentioning

confidence: 99%

Microwave Absorption Performance of Single-Layer and Multi-Layer Structures Prepared by CNTs/Fe3O4 Nonwoven Materials

et al. 2021

View full text Add to dashboard Cite

Electromagnetic radiation can cause serious harm to the human body, such as the rise in body temperature and the decrease in immune function. In this study, the carbon nanotubes (CNTs)/Fe3O4 nonwovens were used to prepare wearable flexible absorbing materials. First, the single-layer absorbing structures were prepared by hot rolling, dipping, and film fabrication, respectively. Then, the single-layer structures were combined to form the multi-layer absorbing structures. By testing and analyzing the absorbing performance of various structures in the X-band frequency range, the optimum combination scheme was found, together with a good reflection loss value of CNTs/Fe3O4 nonwoven material. The experiment results displayed that the single-layer hot-rolled nonwovens modified by CNTs have the best wave absorbing performance. Its minimum reflection loss of −18.59 dB occurred at 10.55 GHz, and the efficient frequency occurred at 8.86–12.40 GHz. The modified film can significantly improve the absorbing performance of multi-layer structures. In addition, the absorbing performance was closely related to both the place where the absorbing film was introduced and the type of absorbing fillers. When the film-forming CNTs (FC) film was located at the bottom layer of the multi-layer structure, the hot rolled CNTs hot rolled mixed reagent film forming CNTs (HC-HM-FC) structure constructed exhibited the best absorbing effects. Its minimum reflection loss can reach −33 dB, and the effective absorbing frequency range covered half of the X-band.

show abstract

Section: Introductionmentioning

confidence: 99%