Superior electromagnetic interference shielding performances of epoxy composites by introducing highly aligned reduced graphene oxide films

Liang, Chaobo; Song, Ping; Qiu, Hua; Huangfu, Yiming; Lu, Yuanjin; Wang, Lei; Kong, Jie; Gu, Junwei

doi:10.1016/j.compositesa.2019.105512

Cited by 73 publications

(37 citation statements)

References 39 publications

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“…In addition, the conductive fillers form a single continuous network structure and the polymer particles tend to exist in isolation after the polymer particles covered with conductive fillers are hot pressed, resulting in poor mechanical properties of polymer matrix EMI shielding composites. Therefore, while maintaining the excellent EMI shielding performance of segregated polymer matrix EMI shielding composites, further optimization of mechanical properties and manufacturing costs is the key to achieving large-scale applications [98][99][100].…”

Section: Segregated Polymer Matrix Emi Shielding Compositesmentioning

confidence: 99%

Structural Design Strategies of Polymer Matrix Composites for Electromagnetic Interference Shielding: A Review

et al. 2021

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With the widespread application of electronic communication technology, the resulting electromagnetic radiation pollution has been significantly increased. Metal matrix electromagnetic interference (EMI) shielding materials have disadvantages such as high density, easy corrosion, difficult processing and high price, etc. Polymer matrix EMI shielding composites possess light weight, corrosion resistance and easy processing. However, the current polymer matrix composites present relatively low electrical conductivity and poor EMI shielding performance. This review firstly discusses the key concept, loss mechanism and test method of EMI shielding. Then the current development status of EMI shielding materials is summarized, and the research progress of polymer matrix EMI shielding composites with different structures is illustrated, especially for their preparation methods and evaluation. Finally, the corresponding key scientific and technical problems are proposed, and their development trend is also prospected. "Image missing"

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Section: Segregated Polymer Matrix Emi Shielding Compositesmentioning

confidence: 99%

Structural Design Strategies of Polymer Matrix Composites for Electromagnetic Interference Shielding: A Review

et al. 2021

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“…The EMI shielding property of CNT f /EP‐M1 ~ 3 was studied, and the influence of CNT f layers to EMI performance was investigated. EMI shielding is determined by reflection, absorption, and multiple reflections, which are mainly related to mobile charge carriers, electric (or magnetic) dipoles, and reflections at various surfaces or interfaces, respectively 30,31 . The total SE (SE T ) consists of the contributions from reflection (SE R ), absorption (SE A ), and multiple reflections (SE M ).…”

Section: Resultsmentioning

confidence: 99%

“…EMI shielding is determined by reflection, absorption, and multiple reflections, which are mainly related to mobile charge carriers, electric (or magnetic) dipoles, and reflections at various surfaces or interfaces, respectively. 30,31 The total SE (SE T ) consists of the contributions from reflection (SE R ), absorption (SE A ), and multiple reflections (SE M ). The multiple reflections are considered as the scattering effect of the inhomogeneity within the materials.…”

Section: Electromagnetic Interference Shielding Effectivenessmentioning

confidence: 99%

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

Mei

Lü

Zhou

et al. 2020

J of Applied Polymer Sci

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High reliability and high-performance electromagnetic interference (EMI) shielding polymeric composite was fabricated by introducing carbon nanotube films (CNT f) into an epoxy (EP) matrix as mechanical and EMI shielding reinforcement simultaneously. According to the computed tomography (CT) detection recorded by a high-speed camera, CNT f exhibited excellent mechanical behavior and good energy absorption. While being introduced into laminated EP composite, the CNT f enhanced both the mechanical performance and EMI shielding performance. The damage mechanism of CNT f /EP was studied by CT detection of the impact process, indicating that the CNT f absorbed the impact energy by improving the delamination resistance. Additionally, the multilayered CNT f can trap and attenuate the entered electromagnetic microwaves by repeated adsorption, reflection, and scattering in the composite, resulting in excellent EMI shielding performance. Consequently, the energy absorption and the total shielding effectiveness of the CNT f /EP reached to 4.58 × 10 −3 J and 52.31 dB, respectively. Therefore, we demonstrated that the CNT f was an ideal functional reinforcement for mechanically strong and high-performance EMI shielding polymeric composites and the CNT f reinforced EP composite is promising in practical EMI-shielding applications.

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“…Polymer‐based conductive composites have gradually replaced the traditional metal‐based shielding materials because of their advantages, such as low density, high‐specific strength, stable chemical properties, and easy processing 7–9 . The relatively satisfactory EMI shielding performance can be achieved by simply adding magnetic or highly conductive fillers.…”

Section: Introductionmentioning

confidence: 99%

Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

Wang

Zhang

et al. 2021

SusMat

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High‐frequency electromagnetic waves and electronic products can bring great convenience to people's life, but lead to a series of electromagnetic interference (EMI) problems, such as great potential dangers to the normal operation of electronic components and human safety. Therefore, the research of EMI shielding materials has attracted extensive attention by the scholars. Among them, polymer‐based EMI shielding materials with light weight, high specific strength, and stable properties have become the current mainstream. The construction of 3D conductive networks has proved to be an effective method for the preparation of polymer‐based EMI shielding materials with excellent shielding effectiveness (SE). In this paper, the shielding mechanism of polymer‐based EMI shielding materials with 3D conductive networks is briefly introduced, with emphasis on the preparation methods and latest research progress of polymer‐based EMI shielding materials with different 3D conductive networks. The key scientific and technical problems to be solved in the field of polymer‐based EMI shielding materials are also put forward. Finally, the development trend and application prospects of polymer‐based EMI shielding materials are prospected.

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Superior electromagnetic interference shielding performances of epoxy composites by introducing highly aligned reduced graphene oxide films

Cited by 73 publications

References 39 publications

Structural Design Strategies of Polymer Matrix Composites for Electromagnetic Interference Shielding: A Review

Structural Design Strategies of Polymer Matrix Composites for Electromagnetic Interference Shielding: A Review

Enhanced impact resistance and electromagnetic interference shielding of carbon nanotubes films composites

Polymer‐based EMI shielding composites with 3D conductive networks: A mini‐review

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