Lightweight and Highly Compressible Expandable Polymer Microsphere/Silver Nanowire Composites for Wideband Electromagnetic Interference Shielding

Wei, Jianhong1,2; Lin, Zhiqiang1; Lei, Zuomin1; Xu, Yadong1; Zhao, Zeyu1,2; Zhao, Tao1; Hu, Yougen1; Miao, Hua3; Sun, Rong1

2022-02-02

10.1021/acsami.1c20593

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

The exploration of lightweight and compressible electromagnetic interference (EMI) shielding materials with outstanding shielding effectiveness (SE) is still a tremendous challenge in the elimination of electromagnetic pollution. Light-weight and highly compressible expandable polymer microsphere/ silver nanowire (EPM/AgNW) composites with micron-sized closed pores and an interfacial AgNW conductive network are fabricated via a facile thermal expansion process in an enclosed space. The EPM/AgNW composites with AgNW loading of 0.127 vol % show low density (0.061 g/cm(3)), high compressibility and compression strength (4.25 MPa at 92.6% of compressive strain), and high EMI SE (over 40 dB, 1 mm) at a wideband of 8-40 GHz. Their EMI SE can be improved to a record 111.5 dB by increasing the AgNW content to 0.340 vol %, which corresponds to the surface-specific SE (SSE/d; SE divided by density and thickness) up to 13433 dB.cm(2)/g. The EMI shielding mechanism is further discussed using the finite-element analysis software COMSOL Multiphysics, and the application of the EPM/AgNW composites is visually demonstrated via near-field shielding in a practical antenna radiation. The overall properties of light weight, high elasticity, excellent mechanical strength, and outstanding EMI shielding performance suggest that the as-prepared EPM/AgNW composites have a great potential for applications in modern electronics.

expandable polymer microspheres silver nanowires thermal expansion electromagnetic interference shielding composite foam

SCI ; EI

英语

其他

National Natural Science Foundation of China[62074154] ; China Postdoctoral Science Foundation["2020M682983","2020M672887"] ; Guangdong Basic and Applied Basic Research Fund["2020A1515110962","2020A1515110154"] ; Shenzhen Science and Technology Program[JCYJ20210324102208023] ; SIAT Innovation Program for Excellent Young Researchers[E1G035]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000768792500108

AMER CHEMICAL SOC

20220611602759

Antennas ; Application programs ; Electromagnetic pulse ; Electromagnetic shielding ; Electromagnetic wave interference ; Foams ; Microspheres ; Nanowires ; Pollution ; Signal interference ; Silver ; Silver compounds

Precious Metals:547.1 ; Thermodynamics:641.1 ; Electricity and Magnetism:701 ; Electromagnetic Waves:711 ; Information Theory and Signal Processing:716.1 ; Computer Software, Data Handling and Applications:723 ; Nanotechnology:761 ; Solid State Physics:933 ; Materials Science:951

Web of Science

1.Chinese Acad Sci, Shenzhen Inst Adv Elect Mat, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Shennan Circuits Co Ltd, Shenzhen 5180117, Peoples R China

Wei, Jianhong,Lin, Zhiqiang,Lei, Zuomin,et al. Lightweight and Highly Compressible Expandable Polymer Microsphere/Silver Nanowire Composites for Wideband Electromagnetic Interference Shielding[J]. ACS Applied Materials & Interfaces,2022,14(4):5940-5950.

Wei, Jianhong.,Lin, Zhiqiang.,Lei, Zuomin.,Xu, Yadong.,Zhao, Zeyu.,...&Sun, Rong.(2022).Lightweight and Highly Compressible Expandable Polymer Microsphere/Silver Nanowire Composites for Wideband Electromagnetic Interference Shielding.ACS Applied Materials & Interfaces,14(4),5940-5950.

Wei, Jianhong,et al."Lightweight and Highly Compressible Expandable Polymer Microsphere/Silver Nanowire Composites for Wideband Electromagnetic Interference Shielding".ACS Applied Materials & Interfaces 14.4(2022):5940-5950.