Nano carbon powder‐multiwalled carbon nanotubes/poly(vinylidene fluoride) percolating composites with low‐percolation binary functional phases and negative permittivity

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Abstract Polymer percolating composites with negative permittivity via the construction of structures are great interest in electromagnetism. In this study, nano carbon powder‐multiwalled nanotubes/poly(vinylidene fluoride) (CP‐MWCNTs/PVDF) comprising binary functional phases CP‐MWCNTs were fabricated using hot‐pressing method. The achieved both low percolation threshold and tunable properties across entire frequency range testing. Percolation phenomenon was observed as content reaching 5 wt%, which reflected establishment network occurrence electrical percolation, resulting a shift toward metal‐like conduction mechanism. Additionally, notably can be ascribed to synergistic effect between phases. plasma oscillation free electrons within conductive plays crucial role achieving permittivity, that elucidated Drude model from electron theory. Furthermore, analyses impedance equivalent circuit illuminate connection dielectric behavior. These findings further reveal influence phases' morphology composition on behavior properties, while expanding application polymer‐based electromagnetic devices. Highlights Tunable related is achieved. Binary exhibit threshold. Synergistic leads

Язык: Английский

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Proton conduction induced weak negative permittivity and low frequency dispersion in activated carbon felt-polyaniline metacomposites

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 163470 - 163470

Опубликована: Май 1, 2025

Язык: Английский

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Negative Permittivity and ε'-Near-Zero Responses Tuned by Multi-Level Heterogeneous Interface in Ternary Metacomposites

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

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Weakly negative permittivity from three-dimensional printed polydimethylsiloxane/graphene films in the radio frequency band

Polymer, Год журнала: 2024, Номер 313, С. 127716 - 127716

Опубликована: Окт. 15, 2024

Язык: Английский

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