Material Engineering and Mechanical Manufacturing

Modeling study on dielectric properties of graphene⁃doped polymer composites

  • Ziwei FANG ,
  • Jingjing HE ,
  • Jing LIN
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  • 1.School of Reliability and Systems Engineering,Beihang University,Beijing 100191,China
    2.Advanced Manufacturing Center,Ningbo Institute of Technology,Beihang University,Ningbo 315800,China

Received date: 2023-09-01

  Revised date: 2023-11-17

  Accepted date: 2023-12-12

  Online published: 2023-12-18

Supported by

National Natural Science Foundation of China(U2230204);Ningbo International Science and Technology Cooperation Project(2023H018)

Abstract

A dielectric model of graphene-doped polymer composites is proposed based on the interfacial polarization theory, and the effect of graphene on the effective permittivity of the composites is described. The proposed model explains the interaction between graphene nanoplatelets and polymer matrix at the interfacial layer and calculates the local permittivity and the local electric field of the interfacial layer. With the control variable method, the influence of material properties in the dielectric model is analyzed. Compared with the traditional empirical model, the proposed dielectric model clarified the mechanism of the effect of the upper limit separation distance, the potential barrier height, the matrix layer conductivity, the graphene nanoplatelet sizes, and other factors on the effective permittivity. The effective permittivity of multiple binary and ternary dielectric composites is predicted. The validity of the proposed model is verified by comparing with the experimental values of samples and literature.

Cite this article

Ziwei FANG , Jingjing HE , Jing LIN . Modeling study on dielectric properties of graphene⁃doped polymer composites[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(14) : 429510 -429510 . DOI: 10.7527/S1000-6893.2023.29510

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