• 文献标题:   Electromagnetic absorption and corresponding mechanism of graphene oxide/gamma-Fe2O3-UHPC composite sheet
  • 文献类型:   Article
  • 作  者:   SONG XH, LU Y, SONG DS, LIU SB, LU XY
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCEMATERIALS IN ELECTRONICS
  • ISSN:   0957-4522 EI 1573-482X
  • 通讯作者地址:  
  • 被引频次:   3
  • DOI:   10.1007/s10854-022-07773-1 EA JAN 2022
  • 出版年:   2022

▎ 摘  要

Graphene oxide (GO) and magnetic gamma-Fe2O3 nanoparticles are added into ultra-high-performance concrete (UHPC) to prepare GO/gamma-Fe2O3-UHPC composite sheet for electromagnetic wave absorbing engineering material. The electromagnetic wave absorption performance of the UHPC composite sheet calculated matches the reflection value measured by the bow method quite well. The wave absorption effect is better when the frequency band is above 16 GHz. In the 18 GHz frequency band, the reflectivity reaches - 21.13 dB, indicating more than 99% of the electromagnetic wave can be absorbed. The wave absorption of the UHPC composite sheet is mainly owing to the electrical loss caused by the interface polarization of GO and the magnetic loss of gamma-Fe2O3.