Dual synergistic effect of a carbon/metal hybrid network on the mechanical and electromagnetic interference shielding performance in self-assembly enhanced epoxy curing networks

Abstract Lightweight microcellular polyurethane (TPU)/carbon nanotubes (CNTs)/ nickel-coated CNTs (Ni@CNTs)/polymerizable ionic liquid copolymer (PIL) composite foams are prepared by non-solvent induced phase separation (NIPS). CNTs and Ni@CNTs modified by PIL provide more heterogeneous nucleation sites and inhibit the aggregation and combination of microcellular structure. Compared with TPU/CNTs, the TPU/CNTs/PIL and TPU/CNTs/Ni@CNTs/PIL composite foams with smaller microcellular structures have a high electromagnetic interference shielding effectiveness (EMI SE). The evaporate time regulates the microcellular structure, improves the conductive network of composite foams and reduces the microcellular size, which strengthens the multiple reflections of electromagnetic wave. The TPU/10CNTs/10Ni@CNTs/PIL foam exhibits slightly higher SE values (69.9 dB) compared with TPU/20CNTs/PIL foam (53.3 dB). The highest specific EMI SE of TPU/20CNTs/PIL and TPU/10CNTs/10Ni@CNTs/PIL reaches up to 187.2 and 211.5 dB/(g cm−3), respectively. The polarization losses caused by interfacial polarization between TPU substrates and conductive fillers, conduction loss caused by conductive network of fillers and magnetic loss caused by Ni@CNT synergistically attenuate the microwave energy.

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Asymmetric layered structural design with segregated conductive network for absorption-dominated high-performance electromagnetic interference shielding

Chemical Engineering Journal ◽

10.1016/j.cej.2021.129083 ◽

2021 ◽

pp. 129083

Author(s):

Binbin Sun ◽

Shuangjie Sun ◽

Ping He ◽

Hao-Yang Mi ◽

Binbin Dong ◽

...

Keyword(s):

Electromagnetic Interference ◽

Structural Design ◽

High Performance ◽

Conductive Network ◽

Electromagnetic Interference Shielding

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Facile heteroatom doping of biomass-derived carbon aerogels with hierarchically porous architecture and hybrid conductive network: Towards high electromagnetic interference shielding effectiveness and high absorption coefficient

Composites Part B Engineering ◽

10.1016/j.compositesb.2021.109175 ◽

2021 ◽

pp. 109175

Author(s):

Meng-Lin Wang ◽

Sheng Zhang ◽

Zi-Han Zhou ◽

Jin-Long Zhu ◽

Jie-Feng Gao ◽

...

Keyword(s):

Electromagnetic Interference ◽

Carbon Aerogels ◽

Conductive Network ◽

Shielding Effectiveness ◽

Electromagnetic Interference Shielding ◽

Heteroatom Doping ◽

Porous Architecture ◽

High Absorption Coefficient ◽

Electromagnetic Interference Shielding Effectiveness ◽

High Absorption

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Flexible, conductive, porous, fibrillar polymer–gold nanocomposites with enhanced electromagnetic interference shielding and mechanical properties

Journal of Materials Chemistry C ◽

10.1039/c6tc04780g ◽

2017 ◽

Vol 5 (5) ◽

pp. 1095-1105 ◽

Cited By ~ 63

Author(s):

Jun Li ◽

Hu Liu ◽

Jiang Guo ◽

Zhen Hu ◽

Zhijiang Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Gold Nanoparticles ◽

Self Assembly ◽

Electromagnetic Interference ◽

Shielding Effectiveness ◽

Emi Shielding ◽

Electromagnetic Interference Shielding ◽

Emi Shielding Effectiveness ◽

Conductive Nanocomposites ◽

Gold Nanocomposites

Flexible lightweight conductive nanocomposites prepared by self-assembly of gold nanoparticles on charged polymer nanofibers show enhanced EMI shielding effectiveness and mechanical properties.

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The synergistic effect of a graphene nanoplate/Fe3O4@BaTiO3 hybrid and MWCNTs on enhancing broadband electromagnetic interference shielding performance

RSC Advances ◽

10.1039/c7ra12909b ◽

2018 ◽

Vol 8 (4) ◽

pp. 2065-2071 ◽

Cited By ~ 19

Author(s):

Lun Jin ◽

Xiaomin Zhao ◽

Jianfeng Xu ◽

Yanyu Luo ◽

Danqing Chen ◽

...

Keyword(s):

Synergistic Effect ◽

Silicone Rubber ◽

Electromagnetic Interference ◽

Emi Shielding ◽

Electromagnetic Interference Shielding ◽

Methyl Vinyl ◽

Solution Blending

In this work, methyl vinyl silicone rubber (VMQ) nanocomposites were prepared by solution blending VMQ, graphene nanoplate/Fe3O4@BaTiO3 hybrid (GFBT) and MWCNTs, aiming to improve the electromagnetic interference (EMI) shielding performance of VMQ.

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