A large-area AgNW-modified textile with high-performance electromagnetic interference shielding

被引：81

作者：

Liu, Junchen ^{[1
,2
,3
]}

Lin, Sen ^{[1
,2
]}

Huang, Kai ^{[1
,2
]}

Jia, Chao ^{[3
]}

Wang, Qingmin ^{[1
,2
]}

Li, Ziwei ^{[3
]}

Song, Jianan ^{[3
]}

Liu, Zhenglian ^{[3
]}

Wang, Haiyang ^{[3
]}

Lei, Ming ^{[1
,2
]}

Wu, Hui ^{[3
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

NPJ FLEXIBLE ELECTRONICS | 2020年 / 4卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

SILVER NANOWIRES; ROBUST; COMPOSITES; NANOCOMPOSITES; FABRICS; FILM;

D O I：

10.1038/s41528-020-0074-0

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Manufacturing a flexible, light, large-area, and high-efficiency electromagnetic shielding materials in a straightforward and cost-effective manner presently remains a significant challenge. In this work, we propose a conductive network design and verify its electromagnetic interference (EMI) shielding effectiveness (SE) by simulation. Using the structure and parameters obtained by simulation, we prepare a flexible EMI shielding material using silver nanowires (AgNWs)/polyvinyl butyral (PVB) ethanol solution and textile substructure via a facile immersing method. In the frequency range of 5-18GHz, the AgNWs/PVB textile with 1.4mm thickness achieves an EMI SE of 59dB, which exceeds the requirements for commercial applications. Due to the low density of 56mg/cm(3), specific shielding effectiveness (SSE) of this material reaches 1053dBm(3)/g. It is found that the AgNWs/PVB textile is more resistant to washing with water and oxidation than AgNWs textile without a PVB protector. As a result, the conductivity of AgNWs/PVB textile exhibits no change after washing with water and varies slightly after being kept in hot air. We find that a signal monitor is unable to detect a signal emitted by a mobile phone from a jacket lined with AgNWs/PVB textile. AgNWs/PVB textile with these properties can be mass-produced as high-efficiency EMI shielding material for commercial applications.

引用

页数：7

共 40 条

[31] Synergistic effect of double percolated co-supportive MWCNT-CB conductive network for high-performance EMI shielding application [J].