Preparation of Carbon Nanofibers by Airflow Spinning and Electromagnetic Interference Shielding Application

doi:10.13190/j.jbupt.2021-279

Journal of Beijing University of Posts and Telecommunications ›› 2022, Vol. 45 ›› Issue (3): 26-31,63.doi: 10.13190/j.jbupt.2021-279

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Preparation of Carbon Nanofibers by Airflow Spinning and Electromagnetic Interference Shielding Application

CUI Bingyuan¹, WEN Xi^2,3, WU Yufeng¹, LEI Ming¹

1. School of Science, Beijing University of Posts and Telecommunication, Beijing 100876, China;
2. Unit 32381 of the Chinese People's Liberation Army, Beijing 100072, China;
3. Ministerial Key Laboratory of ZNDY, Nanjing University of Science &Technology, Nanjing 210094, China

Received:2021-11-19 Online:2022-06-28 Published:2022-06-01

Abstract

Abstract: A process for the preparation of carbon nanofibers by air spinning is designed. First, the fibrous precursors are prepared from polyacrylonitrile, and the carbon nanofibers are successfully prepared by pre-oxidation and high temperature annealing. Then, a variety of carbon nanofibers are prepared by adjusting the annealing temperature. Next, the microstructure and properties of several kinds of carbon nanofibers are identified through a scanning electron microscope, and the internal relationship between the chemical composition, continuity, graphitization and electromagnetic shielding effectiveness of several kinds of carbon nanofibers is discussed. It is concluded that when the annealing temperature reaches 800℃, the carbon nanofiber has the electromagnetic shielding interference effectiveness of about 10dB, which can achieve an electromagnetic shielding effect. Generally speaking, the technology of preparing carbon nanofibers by air spinning has the potential to be used in the field of electromagnetic shielding, and macro-scale production is the key to the development of this field in the future.

Key words: airflow spinning, carbon nanofiber, electromagnetic shielding, polyacrylonitrile

CLC Number:

TQ342+.74

CUI Bingyuan, WEN Xi, WU Yufeng, LEI Ming. Preparation of Carbon Nanofibers by Airflow Spinning and Electromagnetic Interference Shielding Application[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(3): 26-31,63.

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Preparation of Carbon Nanofibers by Airflow Spinning and Electromagnetic Interference Shielding Application

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