Flexible and Robust Functionalized Boron Nitride/Poly(p-Phenylene Benzobisoxazole) Nanocomposite Paper with High Thermal Conductivity and Outstanding Electrical Insulation

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 30, 2023

With the rapid development of 5G information technology, thermal conductivity/dissipation problems highly integrated electronic devices and electrical equipment are becoming prominent. In this work, "high-temperature solid-phase & diazonium salt decomposition" method is carried out to prepare benzidine-functionalized boron nitride (m-BN). Subsequently, m-BN/poly(p-phenylene benzobisoxazole) nanofiber (PNF) nanocomposite paper with nacre-mimetic layered structures prepared via sol-gel film transformation approach. The obtained m-BN/PNF 50 wt% m-BN presents excellent conductivity, incredible insulation, outstanding mechanical properties stability, due construction extensive hydrogen bonds π-π interactions between PNF, stable structures. Its λ∥ λ⊥ 9.68 0.84 W m-1 K-1, volume resistivity breakdown strength as high 2.3 × 1015 Ω cm 324.2 kV mm-1, respectively. Besides, it also extremely tensile 193.6 MPa decomposition temperature 640 °C, showing a broad application prospect in high-end management fields such equipment.

Language: Английский

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Perspectives of nitrogen-doped carbons for electromagnetic wave absorption

Carbon, Journal Year: 2024, Volume and Issue: 221, P. 118925 - 118925

Published: Feb. 10, 2024

Language: Английский

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Fabrication of nitrogen-doped reduced graphene oxide/tricobalt tetraoxide composite aerogels with high efficiency, broadband microwave absorption, and good compression recovery performance

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 190, P. 106 - 116

Published: Jan. 23, 2024

Language: Английский

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Recent progress in smart electromagnetic interference shielding materials

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 186, P. 256 - 271

Published: Jan. 25, 2024

Language: Английский

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Hierarchical porous molybdenum carbide synergic morphological engineering towards broad multi-band tunable microwave absorption

Nano Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

Language: Английский

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Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 27, 2024

Abstract Currently, the demand for electromagnetic wave (EMW) absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly urgent. Multi-component interface engineering considered an effective means to achieve high-efficiency EMW absorption. However, modulation has not been fully discussed great potential in field In this study, multi-component tin compound fiber composites based on carbon (CF) substrate were prepared by electrospinning, hydrothermal synthesis, high-temperature thermal reduction. By utilizing different properties substances, rich heterogeneous interfaces are constructed. This effectively promotes charge transfer enhances interfacial polarization conduction loss. The SnS/SnS 2 /SnO /CF abundant have exhibit excellent absorption at a loading 50 wt% epoxy resin. minimum reflection loss (RL) − 46.74 dB maximum bandwidth 5.28 GHz. Moreover, composite coatings exhibited long-term corrosion resistance Q235 steel surfaces. Therefore, study provides strategy design complex environments.

Language: Английский

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Modulating magnetic interface layer on porous carbon heterostructures for efficient microwave absorption

Nano Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Language: Английский

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Ultralight and rigid PBO nanofiber aerogel with superior electromagnetic wave absorption properties

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 211, P. 320 - 329

Published: Sept. 3, 2024

Language: Английский

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Interface Engineering of Titanium Nitride Nanotube Composites for Excellent Microwave Absorption at Elevated Temperature

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 4, 2024

Abstract Currently, the microwave absorbers usually suffer dreadful electromagnetic wave absorption (EMWA) performance damping at elevated temperature due to impedance mismatching induced by increased conduction loss. Consequently, development of high-performance EMWA materials with good matching and strong loss ability in wide spectrum has emerged as a top priority. Herein, high melting point, electrical conductivity, excellent environmental stability, EM coupling effect, abundant interfaces titanium nitride (TiN) nanotubes, they were designed based on controlling kinetic diffusion procedure Ostwald ripening process. Benefiting from boosted heterogeneous between TiN nanotubes polydimethylsiloxane (PDMS), enhanced polarization relaxations created, which could not only improve depletion efficiency EMWA, but also contribute optimized temperature. Therefore, nanotubes/PDMS composite showed performances varied (298–573 K), while achieved an effective bandwidth (EAB) value 3.23 GHz minimum reflection (RL min ) − 44.15 dB 423 K. This study clarifies relationship dielectric capacity (conduction loss) temperature, breaks new ground for interface engineering.

Language: Английский

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Structural design in reduced graphene oxide (RGO) metacomposites for enhanced microwave absorption in wide temperature spectrum

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 206, P. 211 - 220

Published: April 25, 2024

Language: Английский

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