| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Controllable Preparation of Electrospun Carbon Fibers/Graphene Films and Their Electromagnetic Interference Shielding |
| FU Ningning1, XIE Shaoxing1, ZHOU Lujun1, DING Yaping1, MENG Fanbin2,3,*
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1 CRRC Nanjing Puzhen Co., Ltd., Nanjing Jiangsu Province, Nanjing 210031, China
2 Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
3 Shenzhen Institute of Southwest Jiaotong University, Shenzhen 518000, Guangdong, China |
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Abstract With the rapid development of information technology, high-power electronic equipment including satellite communications, broadband radar, wireless networks and portable digital hardware are widely used in medical, health, electronic security and national defense security, the electromagnetic interference, radiation pollution and information leakage problems have followed. At present, how to prepare graphene-based thin film materials with excellent mechanical properties, electrical conductivity and electromagnetic shielding properties is still a huge challenge. In this work, we adopted a facile and effective method by annealing the alkali-treated polyacrylonitrile (aPAN) nanofibers reinforced graphene oxide (GO) composite films to obtain carbon nanofiber-reinforced graphene aerogel (GCA). The conductivity, electromagnetic shielding and photothermal conversion properties of the thin film were systematically studied. The results show that after the addition of carbon nanofibers, the conductivity of the GCA membrane can be increased to 20.5 S/cm. For electromagnetic shielding performance, it can be increased from 73.7 dB (GA) to 78.8 dB (GCA-10), and the overall shielding effectiveness (SE) of aerogel film can reach more than 99.999 995%. In addition, the aerogel film also exhibits excellent photothermal conversion properties, which is expected to be applied to the fields such as light absorption and crude oil transmission.
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Published:
Online: 2023-12-19
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| Fund:Central Government Guides the Local Science and Technology Development Special Funds to Freely Explore Basic Research Projects (2021Szvup124). |
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2023, Vol. 37 
