scholarly journals Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

SusMat ◽  
2021 ◽  
Author(s):  
Lei Wang ◽  
Zhonglei Ma ◽  
Yali Zhang ◽  
Lixin Chen ◽  
Dapeng Cao ◽  
...  
Keyword(s):  
Emi Shielding ◽  
Shielding Composites

Polymeric textile-based electromagnetic interference shielding materials, their synthesis, mechanism and applications – A review

2021 ◽  
pp. 152808372110370
Author(s):  
Faiza Safdar ◽  
Munir Ashraf ◽  
Amjed Javid ◽  
Kashif Iqbal
Keyword(s):  
Electromagnetic Interference ◽  
Hybrid Composites ◽  
Electronic Devices ◽  
High Tech ◽  
Emi Shielding ◽  
Materials Synthesis ◽  
Synthesis Mechanism ◽  
High Frequencies ◽  
Textile Materials ◽  
Shielding Composites

The rapid proliferation of electronic devices and their operation at high frequencies has raised the contamination of artificial electromagnetic radiations in the atmosphere to an unprecedented level that is responsible for catastrophe for ecology and electronic devices. Therefore, the lightweight and flexible electromagnetic interference (EMI) shielding materials are of vital importance for controlling the pollution generated by such high-frequency EM radiations for protecting ecology and human health as well as the other nearby devices. In this regard, polymeric textile-based shielding composites have been proved to be the best due to their unique properties such as lightweight, excellent flexibility, low density, ease of processability and ease of handling. Moreover, such composites cover range of applications from everyday use to high-tech applications. Various polymeric textiles such as fibers, yarn, woven, nonwoven, knitted, as well as their hybrid composites have been extensively manipulated physically and/or chemically to act as shielding against such harmful radiations. This review encompasses from basic concept of EMI shielding for beginner to the latest research in polymeric-based textile materials synthesis for experts, covering detailed mechanisms with schematic illustration. The review also covers the gap of materials synthesis and their application on polymeric textiles which could be used for EMI shielding applications. Furthermore, recent research regarding rendering EMI shielding properties at various stages of polymeric textile development is provided for readers with critical analysis. Lastly, the applications along with environmental compliance have also been presented for better understanding.

Integrating Efficient Microwave Absorbing and Shielding in a Multistage Composite Foam with Progressive Conductivity Modular Design

2021 ◽  
Author(s):  
Yadong Xu ◽  
Zhiqiang Lin ◽  
Yaqi Yang ◽  
Hong-Ji Duan ◽  
Guizhe zhao ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Modular Design ◽  
Electromagnetic Shielding ◽  
Emi Shielding ◽  
Composite Foam ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing ◽  
Shielding Composites

Ultra-efficient electromagnetic interference (EMI) shielding composites with excellent microwave absorbing properties are the most desirable solution for eliminating microwave pollution. However, integrating absorbing and electromagnetic shielding materials is a difficult...

Fabrication of lightweight and flexible silicon rubber foams with ultra-efficient electromagnetic interference shielding and adjustable low reflectivity

2020 ◽  
Vol 8 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Jianming Yang ◽  
Xia Liao ◽  
Gui Wang ◽  
Jia Chen ◽  
Wanyu Tang ◽  
...  
Keyword(s):  
Communication Technology ◽  
High Power ◽  
Electromagnetic Interference ◽  
Electronic Equipment ◽  
Power Electronic ◽  
Next Generation ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Silicon Rubber ◽  
Shielding Composites

Lightweight and efficient electromagnetic interference (EMI) shielding composites are of great significance for the development of next generation communication technology, wearable equipment and high-power electronic equipment.

scholarly journals Lightweight, Flexible Cellulose-Derived Carbon Aerogel@Reduced Graphene Oxide/PDMS Composites with Outstanding EMI Shielding Performances and Excellent Thermal Conductivities

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Ping Song ◽  
Bei Liu ◽  
Chaobo Liang ◽  
Kunpeng Ruan ◽  
Hua Qiu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Freeze Drying ◽  
Carbon Aerogel ◽  
Urea Solution ◽  
Cellulose Solution ◽  
Emi Shielding ◽  
Excellent Thermal Stability ◽  
Reduced Graphene ◽  
Shielding Composites

AbstractIn order to ensure the operational reliability and information security of sophisticated electronic components and to protect human health, efficient electromagnetic interference (EMI) shielding materials are required to attenuate electromagnetic wave energy. In this work, the cellulose solution is obtained by dissolving cotton through hydrogen bond driving self-assembly using sodium hydroxide (NaOH)/urea solution, and cellulose aerogels (CA) are prepared by gelation and freeze-drying. Then, the cellulose carbon aerogel@reduced graphene oxide aerogels (CCA@rGO) are prepared by vacuum impregnation, freeze-drying followed by thermal annealing, and finally, the CCA@rGO/polydimethylsiloxane (PDMS) EMI shielding composites are prepared by backfilling with PDMS. Owing to skin-core structure of CCA@rGO, the complete three-dimensional (3D) double-layer conductive network can be successfully constructed. When the loading of CCA@rGO is 3.05 wt%, CCA@rGO/PDMS EMI shielding composites have an excellent EMI shielding effectiveness (EMI SE) of 51 dB, which is 3.9 times higher than that of the co-blended CCA/rGO/PDMS EMI shielding composites (13 dB) with the same loading of fillers. At this time, the CCA@rGO/PDMS EMI shielding composites have excellent thermal stability (THRI of 178.3 °C) and good thermal conductivity coefficient (λ of 0.65 W m-1 K-1). Excellent comprehensive performance makes CCA@rGO/PDMS EMI shielding composites great prospect for applications in lightweight, flexible EMI shielding composites. Graphic abstract

scholarly journals Structural Design Strategies of Polymer Matrix Composites for Electromagnetic Interference Shielding: A Review

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chaobo Liang ◽  
Zhoujie Gu ◽  
Yali Zhang ◽  
Zhonglei Ma ◽  
Hua Qiu ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Electromagnetic Interference ◽  
Polymer Matrix Composites ◽  
Test Method ◽  
Research Progress ◽  
High Price ◽  
Matrix Composites ◽  
Emi Shielding ◽  
Widespread Application ◽  
Shielding Composites

AbstractWith the widespread application of electronic communication technology, the resulting electromagnetic radiation pollution has been significantly increased. Metal matrix electromagnetic interference (EMI) shielding materials have disadvantages such as high density, easy corrosion, difficult processing and high price, etc. Polymer matrix EMI shielding composites possess light weight, corrosion resistance and easy processing. However, the current polymer matrix composites present relatively low electrical conductivity and poor EMI shielding performance. This review firstly discusses the key concept, loss mechanism and test method of EMI shielding. Then the current development status of EMI shielding materials is summarized, and the research progress of polymer matrix EMI shielding composites with different structures is illustrated, especially for their preparation methods and evaluation. Finally, the corresponding key scientific and technical problems are proposed, and their development trend is also prospected. "Image missing"

Sign in / Sign up

Export Citation Format

Share Document