Construction, mechanism and prospective of conductive polymer composites with multiple interfaces for electromagnetic interference shielding: A review

Carbon, Journal Year: 2021, Volume and Issue: 177, P. 377 - 402

Published: Feb. 17, 2021

Language: Английский

---

Electromagnetic absorption materials: Current progress and new frontiers

Progress in Materials Science, Journal Year: 2022, Volume and Issue: 127, P. 100946 - 100946

Published: March 17, 2022

Language: Английский

---

Controlled Distributed Ti₃C₂T_x Hollow Microspheres on Thermally Conductive Polyimide Composite Films for Excellent Electromagnetic Interference Shielding

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(16)

Published: Jan. 27, 2023

Flexible multifunctional polymer-based electromagnetic interference (EMI) shielding composite films have important applications in the fields of 5G communication technology, wearable electronic devices, and artificial intelligence. Based on design a porous/multilayered structure using polyimide (PI) as matrix polymethyl methacrylate (PMMA) microspheres template, flexible (Fe3 O4 /PI)-Ti3 C2 Tx -(Fe3 /PI) with controllable pore sizes distribution Ti3 hollow are successfully prepared by sacrificial template method. Owing to structure, when size is 10 µm mass ratio PMMA/Ti3 2:1, film has most excellent EMI performance, effectiveness (EMI SE) 85 dB. It further verified finite element simulation that an effect waves. In addition, good thermal conductivity (thermal coefficient 3.49 W (m·K)-1 ) mechanical properties (tensile strength 65.3 MPa). This conductivity, demonstrated great potential for protection high-power, portable, devices.

Language: Английский

---

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

Nano-Micro Letters, Journal Year: 2021, Volume and Issue: 13(1)

Published: Aug. 18, 2021

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

Language: Английский

---

Flexible Sandwich‐Structured Electromagnetic Interference Shielding Nanocomposite Films with Excellent Thermal Conductivities

Small, Journal Year: 2021, Volume and Issue: 17(42)

Published: Sept. 14, 2021

With the rapid development and popularization of smart, portable, wearable flexible electronic devices, urgent demands have been raised for electromagnetic interference (EMI) shielding films to solve related pollution problems. polyvinyl alcohol (PVA) as polymer matrix, sandwich-structured EMI nanocomposite are prepared via electrospinning-laying-hot pressing technology, where Fe3 O4 /PVA composite electrospun nanofibers in top bottom layers Ti3 C2 Tx middle layer. Owing electrospinning process successful construction sandwich structure, when amounts respectively only 13.3 26.7 wt%, effectiveness (EMI SE) reach 40 dB with thickness 75 µm, higher than that (Fe3 /Ti3 )/PVA (21 dB) based on blending-electrospinning-hot under same fillers. Furthermore, possess excellent thermal conductivities mechanical properties. This novel kind performances, conductivities, properties presents broad application prospects fields protection high-power, devices.

Language: Английский

---

A flexible electromagnetic wave-electricity harvester

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Feb. 5, 2021

Abstract Developing an ultimate electromagnetic (EM)-absorbing material that can not only dissipate EM energy but also convert the generated heat into electricity is highly desired remains a significant challenge. Here, we report hybrid Sn@C composite with biological cell-like splitting ability to address this The consisting of Sn nanoparticles embedded within porous carbon would split under cycled annealing treatment, leading more dispersed ultrasmall size. Benefiting from electron-transmitting phonon-blocking structure created by behavior, wave-electricity device constructed optimum could achieve efficiency at widely used frequency region and maximum thermoelectric figure merit 0.62 473 K, as well constant output voltage power condition microwave radiation. This work provides promising solution for solving interference self-powered devices.

Language: Английский

---

Janus (BNNS/ANF)-(AgNWs/ANF) thermal conductivity composite films with superior electromagnetic interference shielding and Joule heating performances

Nano Research, Journal Year: 2022, Volume and Issue: 15(5), P. 4747 - 4755

Published: Feb. 8, 2022

Language: Английский

---

Recent Advances in Design Strategies and Multifunctionality of Flexible Electromagnetic Interference Shielding Materials

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: March 25, 2022

With rapid development of 5G communication technologies, electromagnetic interference (EMI) shielding for electronic devices has become an urgent demand in recent years, where the corresponding EMI materials against detrimental radiation plays essential role. Meanwhile, with high flexibility and functional integrity are highly demanded emerging applications. Hitherto, a variety flexible lightweight multifunctionalities have been developed. In this review, we not only introduce materials, but also elaborate mechanisms index "green shielding" performance. addition, construction strategies sophisticated summarized. Finally, propose several possible research directions near future, which could be inspirational to fast-growing next-generation reliable multipurpose protections as offered by materials.

Language: Английский

---

Flexible multilayered MXene/thermoplastic polyurethane films with excellent electromagnetic interference shielding, thermal conductivity, and management performances

Advanced Composites and Hybrid Materials, Journal Year: 2021, Volume and Issue: 4(2), P. 274 - 285

Published: March 2, 2021

Language: Английский

---

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

SusMat, Journal Year: 2021, Volume and Issue: 1(3), P. 413 - 431

Published: July 19, 2021

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

Language: Английский

---