Integration of MXene and polymer: Unlocking the full potential of multifunctional composites for electromagnetic interference shielding

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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Absorption–Reflection–Transmission Power Coefficient Guiding Gradient Distribution of Magnetic MXene in Layered Composites for Electromagnetic Wave Absorption

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 17, 2025

Abstract The morphological distribution of absorbent in composites is equally important with absorbents for the overall electromagnetic properties, but it often ignored. Herein, a comprehensive consideration including component regulation, layered arrangement structure, and gradient concentration was used to optimize impedance matching enhance loss. On microscale, incorporation magnetic Ni nanoparticles into MXene nanosheets (Ni@MXene) endows suitable intrinsic permittivity permeability. macroscale, Ni@MXene increases effective interaction area waves, inducing multiple reflection/scattering effects. this basis, according analysis absorption, reflection, transmission (A–R–T) power coefficients composites, constructed realize at low-concentration surface layer, loss middle interlayer microwave reflection high-concentration bottom layer. Consequently, composite (LG5-10–15) achieves complete absorption coverage X-band thickness 2.00–2.20 mm RL min −68.67 dB 9.85 GHz 2.05 mm, which 199.0%, 12.6%, 50.6% higher than non-layered, descending respectively. Therefore, work confirms importance structure improving performance broadens design high-performance materials.

Language: Английский

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Recent progress in MXene fiber: Materials, fabrication techniques, and potential applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158320 - 158320

Published: Dec. 9, 2024

Language: Английский

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Multilayer composite films with enhanced electromagnetic interference shielding and thermal management properties based on bamboo cellulose nanofibers

Carbohydrate Polymers, Journal Year: 2025, Volume and Issue: 354, P. 123309 - 123309

Published: Jan. 23, 2025

Language: Английский

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Assembly of PAN/Gr@MWCNTs/CoFe2O4 multilayer composite films for high-efficiency electromagnetic shielding and Joule heating

Composites Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 111081 - 111081

Published: Jan. 1, 2025

Language: Английский

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Core-shell nickel@copper nanowires associated with multilayered gradient architecture design towards excellent absorption-dominant electromagnetic interference shielding

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Modified silicone rubber with super-stretch and high-temperature resistance for liquid metal/elastomer composites with electrical insulation and strain-invariant electromagnetic shielding

Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: 230, P. 186 - 194

Published: March 9, 2025

Language: Английский

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Ultra‐Compact MXene/Alginate/PVA Composite Fibers by Intercalation and Chelation for Enhanced Flame Retardancy and Energy Harvesting

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

MXene fibers with electro-conductivity and electrochemical properties have drawn growing research interest for its promising applications in wearable electronics, flexible electrodes, smart textiles. However, producing high strength keeps challenging because loose sheets are hard to compact tightly due electrostatic repulsion. Herein, ultra-compact MXene-based produced by intercalating alginate polyvinyl alcohol (PVA) layers into nanosheets chelating via metal ions (i.e., Ca2+). The hydrogen ionic bond beneficial decrease the interplanar spacing, which improves tensile strength. These result low porosity (0.2 vol%) a orientation factor of 0.877 exhibiting electrical conductivity (1006 S cm‒1). In addition, flame retardancy is enhanced without smoldering owing synergistic effect ions. Moreover, these electromagnetic interference shielding, mechanical stability, acid, alkali-resistant properties, photo-thermal can be achieved scale production. This strategy paves way continuous production functional fibers, applicable retardant fabric, wireless communication, energy harvesting,

Language: Английский

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Comparative enhancement of H+ and OH− treatment on electromagnetic interference shielding in aligned and compact Ti3C2Tx MXene film

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

Abstract The pressing demand for ultrathin and flexible shields to counter electromagnetic interference (EMI) has sparked interest in Ti 3 C 2 T x MXene materials due their exceptional electrical conductivity, tunable surface chemistry, layered structure. However, pure films often lack the mechanical properties required practical engineering applications, traditional reinforcement methods tend reduce conductivity. This work demonstrates an effective strategy enhance alignment densely packed structure of by regulating acidity alkalinity aqueous solutions. approach simultaneously improves strength shielding effectiveness (EMI SE). Compared with original films, modified ammonia solution (NH ·H O) via OH − show a significant improvement tensile (27.7 ± 1.9 MPa). Meanwhile, treated hydrochloric acid (HCl) H + reach even higher 39 1.5 MPa. Moreover, EMI SE values increase significantly, each reaching 66.2 58.4 dB. maximum improvements acid- alkali-treated samples are 17.9% 4%, respectively. In conclusion, simultaneous enhancement efficacy highlights potential applications materials. Graphical abstract

Language: Английский

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Air‐Drying for Rapid Manufacture of Flexible Aramid Nanofiber Aerogel Fibers with Robust Mechanical Properties and Thermal Insulation in Harsh Environments

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Aerogel fibers uniting characteristics of both aerogels (lightweight and porosity) (flexibility wearability) exhibit a great potential for the production next generation thermal protection textiles; still, complex drying procedures mechanical brittleness remain main obstacles toward further exploitation. Herein, flexible robust aramid nanofiber aerogel (ANAFs) are scalably prepared by continuous wet-spinning coupled with fast air-drying. This synthesis involves calcium ions (Ca

Language: Английский

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