Electric-magnetic-dielectric synergism and Salisbury screen effect in laminated polymer composites with multiwall carbon nanotube, nickel, and antimony trioxide for enhancing electromagnetic interference shielding

被引：38

作者：

He Q.-M. ^{[1
]}

Tao J.-R. ^{[1
]}

Yang Y. ^{[1
]}

Yang D. ^{[1
]}

Zhang K. ^{[2
]}

Fei B. ^{[3
]}

Wang M. ^{[1
]}

机构：

[1] Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing

[2] School of Materials and Energy, Southwest University, Chongqing

[3] Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong

来源：

Composites Part A: Applied Science and Manufacturing | 2022年 / 156卷

基金：

中国国家自然科学基金;

关键词：

A. Polymer-matrix composites (PMCs); B. Electrical properties; E; Cure; Electromagnetic interference shielding;

D O I：

10.1016/j.compositesa.2022.106901

中图分类号：

学科分类号：

摘要：

Herein, polydimethylsiloxane (PDMS) was used as matrix, multi-walled carbon nanotubes (MWCNTs), nickel (Ni) and antimony trioxide (Sb2O3) particles were used as multiple fillers to explore the electric-magnetic-dielectric loss synergism in the composites. Generally, MWCNTs and Ni particles in the composites provided mainly electric and magnetic dissipation of microwaves, respectively. Sb2O3 particles were used to improve impedance matching and reduce surface reflection of microwaves. The synergistic effect of the Sb2O3-Ni-MWCNTs on electromagnetic interference (EMI) shielding effectiveness (SE) was discussed for combination of fillers with different ratio. Furthermore, the symmetrical structure (SS) and asymmetric structure (AS) composites were designed to obtain high EMI SE and absorption coefficient. For example, the SS composites and the AS composites could achieve the high EMI SET/absorption coefficient of ∼ 57.4 dB/ ∼ 0.75, and ∼ 55.7 dB/ ∼ 0.80, respectively, because of the electric-magnetic-dielectric synergism and Salisbury screen effect. © 2022 Elsevier Ltd

引用

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