• 文献标题:   High electromagnetic interference shielding effectiveness in MgO composites reinforced by aligned graphene platelets
  • 文献类型:   Article
  • 作  者:   WANG W, CUI RP, ZHANG P, WAN CL, PAN W
  • 作者关键词:   dielectrical propertie, electrical conductivity, emi shielding effectivenes, graphene/mgo composite, parallel arrangement
  • 出版物名称:   JOURNAL OF THE AMERICAN CERAMIC SOCIETY
  • ISSN:   0002-7820 EI 1551-2916
  • 通讯作者地址:  
  • 被引频次:   5
  • DOI:   10.1111/jace.17667 EA FEB 2021
  • 出版年:   2021

▎ 摘  要

Graphene has been considered as an excellent filler to reinforce ceramics with enhanced properties. However, the uniform dispersion and controlled orientation of graphene sheets in a ceramic matrix have become major challenges toward higher performance. In this paper, we prepared MgO matrix composites with parallel graphene layers through the intercalation of the precursor into expandable graphite. We obtained a high electromagnetic interference (EMI) shielding effectiveness of similar to 30 dB, due to the multiple reflections and absorptance of electromagnetic waves between the parallel graphene layers. The hardness and strength of the MgO composite were also increased by introducing parallel graphene layers. All these properties suggest that the graphene/MgO composite represents a promising electromagnetic shielding material.