International Journal of Minerals Metallurgy and Materials, Journal Year: 2023, Volume and Issue: 30(3), P. 428 - 445
Published: Jan. 14, 2023
Language: Английский
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
Citations
501
Nano Research, Journal Year: 2022, Volume and Issue: 15(7), P. 6761 - 6771
Published: May 13, 2022
Language: Английский
Citations
217
Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)
Published: Feb. 8, 2023
Construction of advanced electromagnetic interference (EMI) shielding materials with miniaturized, programmable structure and low reflection are promising but challenging. Herein, an integrated transition-metal carbides/carbon nanotube/polyimide (gradient-conductive MXene/CNT/PI, GCMCP) aerogel frame hierarchical porous gradient-conductivity has been constructed to achieve EMI ultra-low reflection. The gradient-conductive structures obtained by continuous 3D printing MXene/CNT/poly (amic acid) inks different CNT contents, where the slightly conductive top layer serves as EM absorption highly bottom layer. In addition, could extend dissipation path dissipate multiple reflections. Consequently, GCMCP frames exhibit excellent average efficiency (68.2 dB) (R = 0.23). Furthermore, miniaturized can be used gaskets effectively block wireless power transmission, which shows a prosperous application prospect in defense industry aerospace.
Language: Английский
Citations
179
Small, Journal Year: 2022, Volume and Issue: 19(6)
Published: Nov. 27, 2022
In order to achieve excellent electromagnetic wave (EMW) absorption properties, the microstructure design and component control of absorber are critical. this study, three different structures made Mo2 C/C hollow spheres prepared their microwave behavior is investigated. The double-shell consisting an outer thin shell inner rough thick with multiple EMW loss mechanisms exhibit good properties. further improve MoC1-x /C crystalline phases molybdenum carbide optimize capability materials. Finally, α-phase have best When filling 20 wt.%, minimum reflection at 1.8 mm -50.55 dB effective bandwidth 2 5.36 GHz, which expected be a characteristics "thin, light, wide, strong".
Language: Английский
Citations
178
Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(3), P. 1658 - 1698
Published: June 17, 2022
Language: Английский
Citations
171
Advanced Science, Journal Year: 2023, Volume and Issue: 10(32)
Published: Sept. 21, 2023
Abstract Stealth technology is used to enhance the survival of military equipment in field surveillance, as it utilizes a combination techniques render itself undetectable by enemy radar systems. Radar absorbing materials (RAMs) are specialized reduce reflection (or absorption) signals provide stealth capability, which core component passive countermeasures applications. The properties RAMs can be optimized adjusting their composition, microstructure, and surface geometry. Carbon‐based present promising approach for fabrication ultrathin, versatile, high‐performance due large specific area, lightweight, excellent dielectric properties, high electrical conductivity, stability under harsh conditions. This review begins with brief history an introduction electromagnetic waves, systems, materials. followed discussion recent research progress carbon‐based RAMs, including carbon blacks, fibers, nanotubes, graphite, graphene, MXene, along in‐depth examination principles strategies on attenuation characteristics. Hope this will offer fresh perspectives design thereby fostering deeper fundamental understanding promoting practical
Language: Английский
Citations
171
Journal of Material Science and Technology, Journal Year: 2022, Volume and Issue: 132, P. 193 - 200
Published: July 6, 2022
Language: Английский
Citations
170
Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)
Published: Nov. 23, 2023
The utilization of eco-friendly, lightweight, high-efficiency and high-absorbing electromagnetic interference (EMI) shielding composites is imperative in light the worldwide promotion sustainable manufacturing. In this work, magnetic poly (butyleneadipate-co-terephthalate) (PBAT) microspheres were firstly synthesized via phase separation method, then PBAT composite foams with layered structure was constructed through supercritical carbon dioxide foaming scraping techniques. merits integrating ferroferric oxide-loaded multi-walled nanotubes (Fe
Language: Английский
Citations
170
Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)
Published: Nov. 15, 2022
High‑efficiency electromagnetic interference (EMI) shielding materials are of great importance for electronic equipment reliability, information security and human health. In this work, bidirectional aligned Ti3C2Tx@Fe3O4/CNF aerogels (BTFCA) were firstly assembled by freezing freeze-drying technique, the BTFCA/epoxy nanocomposites with long-range lamellar structures then prepared vacuum-assisted impregnation epoxy resins. Benefitting from successful construction three-dimensional conductive networks synergistic effect, when mass fraction Ti3C2Tx Fe3O4 2.96 1.48 wt%, show outstanding EMI effectiveness 79 dB, about 10 times that blended Ti3C2Tx@Fe3O4/epoxy (8 dB) same loadings Fe3O4. Meantime, corresponding also present excellent thermal stability (Theat-resistance index 198.7 °C) mechanical properties (storage modulus 9902.1 MPa, Young's 4.51 GPa hardness 0.34 GPa). Our fabricated would greatly expand applications MXene resins in fields security, aerospace weapon manufacturing, etc.
Language: Английский
Citations
168
Materials Today, Journal Year: 2023, Volume and Issue: 66, P. 245 - 272
Published: April 10, 2023
Electromagnetic interference (EMI) shielding is critical in electronic applications. However, the currently available EMI materials are restricted customizability and application flexibility. Recent advances manufacturing technologies have provided a unique path to achieve custom creation of solutions. A successful example additive (AM), which has enabled high design freedom, efficient performance regulation, multifunctionality simultaneously into fabricated shields, offering an opportunity start revolution field shielding. In this review, we summarize latest AM materials, aiming provide deep understanding connection between raw methods, considerations, performances shields. We first introduce mechanism subsequently focusing on characteristics representative methods as-created Based requirements create application-oriented solutions, these also critically compared. Thereafter, present state-of-the-art considerations shields examine pivotal roles realizing designs. conclude by discussing future research directions, at motivating use developments
Language: Английский
Citations
158