Structural‐Functional‐Integrated Ultra‐Wideband Microwave‐Absorbing Composites Based on In Situ‐Grown Graphene Meta‐nanointerface

Abstract Ultra‐wideband microwave absorbing (MA) materials covering the low‐frequency range (2–6 GHz) are highly desirable in civil and military fields. These materials can be fabricated based on the design of electromagnetic meta‐structure. Herein, a structural‐functional‐integrated ultra‐wideband SiO 2 fiber reinforced cyanate ester (CE) MA composite based on an in situ‐grown graphene meta‐nanointerface layer (GrMI) (SiO 2f /GrMI/CE) is reported. The relationship between the periodic structure of the graphene nano‐interface layer and the MA performance is discussed through experiments and simulations. The results show that SiO 2f /GrMI/CE with a thickness of 8.78 mm exhibits an effective absorption bandwidth…

• NU
  Northwestern University
• NN
  National Natural Science Foundation of China

  Awards: 52072304, 52172103, 52231004, 52222204
• NP
  Northwestern Polytechnical University
• NS
  National Science and Technology Major Project

  Awards: J2019‐VI‐0014‐0129, J2019-VI-0014-0129