Shape Anisotropic Chain‐Like CoNi/Polydimethylsiloxane Composite Films with Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Фев. 13, 2024

Abstract The demand for low‐frequency microwave absorption materials is becoming more and urgent. Novel shape anisotropy chain‐like CoNi fabricated using polyvinylpyrrolidone as a shape‐directing agent via solvothermal method, which then mixed with polydimethylsiloxane (PDMS) to prepare corresponding multifunctional CoNi/PDMS composite films. Shape strong magnetic coupling effect of enhance natural resonance loss capability. minimum reflection (RL min ) −50.5 dB effective bandwidth (EAB) 1.04 GHz (2.64–3.68 GHz) at 3.9 mm CoNi. 18 vol% films present optimal performance RL −56.7 EAB (2.96–4.00 4.1 mm, far superior spherical −9.5 dB. Meantime, the in‐plane inter‐plane thermal conductivity coefficients are 2.05 0.61 W m −1 K , about 1.5 times higher than (1.36 0.42 ), also 220% 190% pure PDMS (0.64 0.21 ). This can broaden applications in 5G communications flexible electronics.

Язык: Английский

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Construction of Self-Assembly Based Tunable Absorber: Lightweight, Hydrophobic and Self-Cleaning Properties

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Май 28, 2023

Although multifunctional aerogels are expected to be used in applications such as portable electronic devices, it is still a great challenge confer multifunctionality while maintaining their inherent microstructure. Herein, simple method proposed prepare NiCo/C with excellent electromagnetic wave absorption properties, superhydrophobicity, and self-cleaning by water-induced NiCo-MOF self-assembly. Specifically, the impedance matching of three-dimensional (3D) structure interfacial polarization provided CoNi/C well defect-induced dipole primary contributors broadband absorption. As result, prepared have width 6.22 GHz at 1.9 mm. Due presence hydrophobic functional groups, improve stability humid environments obtain hydrophobicity large contact angles > 140°. This aerogel has promising absorption, resistance water or environments.

Язык: Английский

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Impact mechanisms of aggregation state regulation strategies on the microwave absorption properties of flexible polyaniline

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 651, С. 494 - 503

Опубликована: Авг. 7, 2023

Язык: Английский

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Recent advances in construction strategies and multifunctional properties of flexible electromagnetic wave absorbing materials

Materials Research Bulletin, Год журнала: 2023, Номер 171, С. 112630 - 112630

Опубликована: Ноя. 22, 2023

Язык: Английский

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Perspective of electromagnetic wave absorbing materials with continuously tunable effective absorption frequency bands

Composites Communications, Год журнала: 2024, Номер 50, С. 101993 - 101993

Опубликована: Июль 9, 2024

Язык: Английский

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Facile strategy for constructing highly thermally conductive PVDF-BN/PEG phase change composites based on a salt template toward efficient thermal management of electronics

Applied Thermal Engineering, Год журнала: 2023, Номер 232, С. 121041 - 121041

Опубликована: Июнь 26, 2023

Язык: Английский

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Zeolite imidazolate framework derived efficient absorbers: from morphology modulation to component regulation

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 177092 - 177092

Опубликована: Окт. 16, 2024

Язык: Английский

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Liquid metal based conductive textile via reactive wetting for stretchable electromagnetic shielding and electro-thermal conversion applications

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148504 - 148504

Опубликована: Янв. 4, 2024

Язык: Английский

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Oriented BN/BNNT heterostructure constructed by interface engineering strategy for polyamide-imide composite film with advanced flexibility and thermally conductive properties

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148653 - 148653

Опубликована: Янв. 8, 2024

Язык: Английский

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Triple-network structured phase change composite based on “rod-brush” CNTs-CFs with high thermal conductivity

Composites Science and Technology, Год журнала: 2025, Номер unknown, С. 111080 - 111080

Опубликована: Янв. 1, 2025

Язык: Английский

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