Dielectric and microwave absorption properties of resin-matrix composite coating filled with multi-wall carbon nanotubes
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Dielectric and microwave absorption properties of resin-matrix composite coating filled with multi-wall carbon nanotubes and Ti3SiC2 particles Liang Zhou1,3 · Jiaojiao Yu1 · Hongbo Wang1,3 · Meng Chen1 · Daqing Fang2 · Zhenjun Wang1,3 · Zhuo Li1,3 Received: 14 May 2020 / Revised: 19 July 2020 / Accepted: 31 July 2020 / Published online: 12 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Lightweight resin-matrix composite coatings filled with multi-wall carbon nanotubes (MWCNTs) or/and Ti3SiC2 particles were fabricated, and the microstructure and complex permittivity of the coatings were detected. Owing to the synergistic effect of MWCNTs and Ti3SiC2 absorbents, the complex permittivity is effectively adjusted and the impedance matching is further optimized, ensuring the introduction of the incident electromagnetic waves. Meanwhile, the dipole movement, charge accumulation, micro-current and multiple scattering result in a much stronger dielectric loss and conductance loss to consume the incident electromagnetic waves. As a consequence, compared with MWCNTs/resin and Ti3SiC2/resin coatings, the MWCNTs-Ti3SiC2/resin coating exhibits favorable microwave absorption performance with a wider effective absorption bandwidth and much lower minimum reflection loss.
1 Introduction With the development of radio technology, electromagnetic waves generated by the wireless communication equipment are harmful to living body and also affect the normal operations of electronic equipment, which assist the microwave absorption materials (MAMs) to become a hot research topic [1–5]. MAMs transform the energy of incident electromagnetic waves into heat energy or other forms of energy by dielectric loss, magnetic loss, and conductance loss [6–8]. * Liang Zhou [email protected] Jiaojiao Yu [email protected] Hongbo Wang [email protected] Daqing Fang [email protected] 1
School of Materials Science and Engineering, Chang’an University, 710064 Xi’an, China
2
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, 710049 Xi’an, China
3
Engineering Research Center of Transportation Materials of Ministry of Education, Chang’an University, 710061 Xi’an, China
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Vol:.(1234567890)
The mechanisms of MAMs are mainly related to the properties, composition and structure of the absorber. Hence, there are two main ways to adjust the microwave absorption performance of the materials: (i) Adjusting the microstructure to control the propagation path of electromagnetic waves in the materials; (ii) Adjusting the component of the absorber to regulate the electromagnetic parameters of the materials [6]. Zuo et al. adjusted the composition and structure of graphene/carbonyl iron/polymethyl methacrylate nanocomposites using digital light processing 3D printing technology [9]. It is found that the nanocomposite containing 1.0 wt% graphene and 47.8 wt% carbonyl iron presents the minimum reflection loss of −54.4 dB and the effective absorption bandwidth of 3.41 GHz at
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