Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Large-Scale Fabrication of Tunable Sandwich-structured Silver Nanowires/Aramid Nanofiber Films for Exceptional Electromagnetic Interference (EMI) Shielding

Xinbo Jiang
,
Guoqiang Cai
,
Jiangxiao Song
,
Yan Zhang
* ORCID logo ,
Bin Yu
,
Shimin Zhai
,
Kai Chen
ORCID logo ,
Hao Zhang
,
Yihao Yu
,
Dongming Qi
*
Version 1 : Received: 17 November 2023 / Approved: 21 November 2023 / Online: 22 November 2023 (07:28:39 CET)

A peer-reviewed article of this Preprint also exists.

Jiang, X.; Cai, G.; Song, J.; Zhang, Y.; Yu, B.; Zhai, S.; Chen, K.; Zhang, H.; Yu, Y.; Qi, D. Large-Scale Fabrication of Tunable Sandwich-Structured Silver Nanowires and Aramid Nanofiber Films for Exceptional Electromagnetic Interference (EMI) Shielding. Polymers 2024, 16, 61. Jiang, X.; Cai, G.; Song, J.; Zhang, Y.; Yu, B.; Zhai, S.; Chen, K.; Zhang, H.; Yu, Y.; Qi, D. Large-Scale Fabrication of Tunable Sandwich-Structured Silver Nanowires and Aramid Nanofiber Films for Exceptional Electromagnetic Interference (EMI) Shielding. Polymers 2024, 16, 61.

Abstract

The recent advancements in communication technology have facilitated the widespread deployment of electronic communication equipment globally, resulting in the pervasive presence of electromagnetic pollution. Consequently, there is an urgent necessity to develop a thin, lightweight, efficient, and durable electromagnetic interference (EMI) shielding material, capable of withstanding severe environmental conditions, and possessing a scalable production method. In this paper, we proposed an innovative and scalable method for preparing EMI shielding films with a tunable sandwich-structure. The film possesses a nylon mesh (NM) backbone, with AgNWs serving as the shielding coating and aramid nanofibers (ANFs) acting as the cladding layer. The prepared film was thin and flexible, with a thickness of only 0.13 mm. AgNWs could easily form a conductive network structure with excellent performance, and the film had a high EMI shielding efficiency, up to 50.6 dB with 1.0mg/cm2. Due to the outstanding thermal resistance, acid and alkali resistance properties of aramid fibers, the NAAANF film demonstrates remarkable robustness in the face of complex usage environments. Such a thin, efficient and environmentally resistant EMI shielding film provided new ideas for the broad EMI shielding market.

Keywords

EMI shielding; sandwich structure; aramid nanofibers; environmental suitability

Subject

Chemistry and Materials Science, Surfaces, Coatings and Films

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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