Synergistically depressed dielectric loss and elevated breakdown strength in core@double-shell structured Cu@CuO@MgO/PVDF nanocomposites

Polymer, Год журнала: 2024, Номер 307, С. 127321 - 127321

Опубликована: Июнь 24, 2024

Язык: Английский

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Synergistic regulation of intra-particle and inter-particle polarizations in BaTiO3@Al2O3/PVDF nanocomposites towards boosted overall dielectric properties

Materials Today Chemistry, Год журнала: 2024, Номер 43, С. 102492 - 102492

Опубликована: Дек. 28, 2024

Язык: Английский

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Achieving synchronously high thermal conductivity and breakdown strength in PVA modulated via multiple ordered liquid crystal domains

FlatChem, Год журнала: 2025, Номер unknown, С. 100813 - 100813

Опубликована: Янв. 1, 2025

Язык: Английский

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Synergistically enhanced dielectric properties and thermal conductivity in percolating flaky copper/poly(vinylidene fluoride) nanocomposites via engineering magnesium oxide as a buffer interlayer

Journal of Applied Polymer Science, Год журнала: 2024, Номер 141(41)

Опубликована: Авг. 6, 2024

Abstract High dielectric constant ( ε ), thermal conductivity (TC), and breakdown strength E b ) along with low loss flexible polymeric nanocomposites display multifunctional applications. In this work, to synergistically bolster the TC while restraining leakage current in percolating flaky copper f ‐Cu)/poly(vinylidene fluoride) (PVDF), presenting a giant , core@shell structured ‐Cu@MgO (magnesium oxide) nanosheets were first created via chemical precipitation method, then incorporated into host PVDF explore MgO shell’ impact on properties of resulting nanocomposites. The introduced interlayer strengthens interfacial interactions significantly mitigates mismatch both between ‐Cu PVDF, elevated ‐Cu@MgO/PVDF comparison pristine ‐Cu/PVDF. Furthermore, insulating introduces deep traps inhibits long‐distance migration electrons, leading remarkably suppressed loss. More importantly, can be optimized by tuning thickness. fitting results Havriliak‐Negami equation theoretically support shell's suppression effect charge reveal underlying polarization mechanism developed currently high but loss, present promising applications electrical power systems.

Язык: Английский

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Wide-bandgap silica decorated graphite nanosheet for decoupling control of dielectric properties and thermal conductivity in poly(vinylidene fluoride) nanocomposites

Applied Materials Today, Год журнала: 2025, Номер 43, С. 102669 - 102669

Опубликована: Март 13, 2025

Язык: Английский

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Fine assembly of TiO2 on the surface of Si particles leading to enhanced dielectric performance of PVDF composites

Materials Today Chemistry, Год журнала: 2025, Номер 45, С. 102644 - 102644

Опубликована: Март 17, 2025

Язык: Английский

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Modulating cross-linked network structure of epoxy resin blends towards concurrently high intrinsic thermal conductivity and dielectric properties

Journal of Polymer Research, Год журнала: 2024, Номер 31(7)

Опубликована: Июнь 18, 2024

Язык: Английский

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Wide-Bandgap Silica Decorated Graphite Nanosheet for Decoupling Control of Dielectric Properties and Thermal Conductivity in Poly(Vinylidene Fluoride) Nanocomposites

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced intrinsic thermal conductivity of liquid crystalline polyester dispersed films through hydrogen bond interaction

Polymer, Год журнала: 2024, Номер 309, С. 127423 - 127423

Опубликована: Июль 23, 2024

Язык: Английский

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Itaconic anhydride functionalized cyanoethyl cellulose with crosslinked structure enabled improved dielectric properties

Polymer International, Год журнала: 2024, Номер 73(12), С. 1022 - 1029

Опубликована: Июль 15, 2024

Abstract As a type of cellulose ether, cyanoethyl (CEC) is considered to be promising candidate for polymer dielectrics due its sustainable nature and high dielectric constant induced by the cyano groups. However, relatively conduction loss CEC arising from charge motion across degrades properties. In this work, we designed synthesized an all‐organic composite CEC/itaconic anhydride (ITA) improve The matrix was graft functionalized ITA via esterification reaction between groups hydroxyl CEC. Meanwhile, crosslinking structure also established in generation diester. Significantly improved ( ε r ), elevated breakdown strength E b restrained (tan δ ) decreased conductivity σ were observed composites compared with unmodified increased 17 pure 32 CEC/ITA at 1 kHz, soared 145 MV m −1 226 composite. tan reduced 0.24 about 0.05 100 Hz. This should attributed molecule trapping centers electron affinity formation crosslinked networks as well hydrogen bonding, which impeded electric conduction. It provided additional advantages better properties than temperatures, may offer inspiration design preparation bio‐based temperatures. © 2024 Society Chemical Industry.

Язык: Английский

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