Multiscale collaborative coupling of wood-derived porous carbon modified by three-dimensional conductive magnetic networks for electromagnetic interference shielding

2021 ◽  
pp. 109169
Author(s):  
Mingliang Cheng ◽  
Wenling Ren ◽  
Hongxia Li ◽  
Xianguo Liu ◽  
Sateesh Bandaru ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Electromagnetic Interference ◽  
Three Dimensional ◽  
Electromagnetic Interference Shielding

Three-dimensional and highly ordered porous carbon–MnO2 composite foam for excellent electromagnetic interference shielding efficiency

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 100713-100722 ◽  
Author(s):  
Pinki Rani Agarwal ◽  
Rajeev Kumar ◽  
Saroj Kumari ◽  
Sanjay R. Dhakate
Keyword(s):  
Porous Carbon ◽  
Electromagnetic Interference ◽  
Three Dimensional ◽  
High Strength ◽  
Carbon Matrix ◽  
Carbon Foam ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Composite Foam ◽  
Ordered Porous

The combination with MnO2 nanoparticles in carbon matrix, the carbon foam exhibit absorption dominating specific EMI shielding value of −150 dB cm3 g−1 with high strength of 7.8 MPa.

Multi-interfaced graphene aerogel/polydimethylsiloxane metacomposites with tunable electrical conductivity for enhanced electromagnetic interference shielding

2020 ◽  
Vol 8 (34) ◽  
pp. 11748-11759 ◽  
Author(s):  
Jingnan Ni ◽  
Ruoyu Zhan ◽  
Jun Qiu ◽  
Jincheng Fan ◽  
Binbin Dong ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Three Dimensional ◽  
Interface Structure ◽  
Negative Permittivity ◽  
Electromagnetic Interference Shielding ◽  
Graphene Aerogel

Three-dimensional graphene aerogel/polydimethylsiloxane metacomposites with an integral multi-interface structure possess adjustable negative permittivity, excellent microwave absorption and electromagnetic interference shielding.

Microwave Irradiation of Graphene Aerogel and Its Use on the Electromagnetic Interference Shielding of BMI Nanocomposites

NANO ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. 2050143
Author(s):  
Bowen Feng ◽  
Wei Li ◽  
Fei Xue ◽  
Xingyu Tong ◽  
Jiaying Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Electromagnetic Interference ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Microwave Treatment ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Graphene Aerogels ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Emi Se

In this work, graphene aerogels (GAs) with three-dimensional interconnected networks were prepared by chemical reduction and self-assembly of graphene oxide sheets. After microwave treatment, obtained microwave reduced graphene aerogels (MRGAs) were used in the preparation of bismaleimide (BMI) composites. The results show that the microwave treatment significantly enhanced the quality of GAs, and the three-dimensional networks in the GAs were well retained. Moreover, the MRGAs were highly efficient in endowing BMI with high electrical conductivity and excellent electromagnetic interference shielding effectiveness (EMI SE). The conductivity of MRGA/BMI composites was 42–68% higher than that of GA/BMI composites. When the filler content is 1.6 wt.%, the EMI SE of MRGA/BMI composite was 32.3% higher than that of GA/BMI composite in the X band.

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