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

Abstract

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.

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

“…In addition, the electromagnetic waves can be dissipated through multiple reflections at the interface inside the materials. The residual electromagnetic waves will pass through the shielding materials and become transmitted waves [11,23]. The EMI shielding mechanism is shown in Fig.…”

“…Currently, researchers have effectively solved the problem of poor EMI shielding performance of polymer matrix composites by compounding conductive fillers with resin matrix. Meanwhile, carbon nanotubes, graphene, metal nanowires/particles, and MXene have been widely used as conductive fillers for polymer matrix composites, and the current status of polymer matrix EMI shielding composites based on different types of conductive fillers has also been outlined and discussed in detail [11][12][13].…”

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

“…Besides, excellent thermal conductivity and outstanding EMI shielding of EG film could also be maintained. However, high electrical conductivity of EG can cause excessive reflectivity in electromagnetic waves, resulting in secondary radiation to the environment [8,32]. It's necessary to increase the loss of electromagnetic waves to reduce secondary radiation pollution [33], such as combining magnetic fillers with EG [34].…”

N-doped MXene derived from chitosan for the highly effective electrochemical properties as supercapacitor

“…Two-dimensional (2D) materials (e.g., graphene, transition metal-carbon disulfide (TMDC), and transition metal carbide [10,11]) have unique advantages such as electronic, physical [12], and chemical properties [13,14] and large specific surface area [15][16][17]. Therefore, two-dimensional Highlights • A new class of N-doped MXene two-dimensional materials from chitosan is prepared after high-temperature calcination.…”