Synergistic Improvement of Dielectric and Thermal Conductivity Properties for Polymers Filled with Multifunctional Modified Nanowires

Li, Guan; Gao, Ying; Liu, Huijing; Xu, Haiping; Xiong, Wei; Guo, Lihe; Li, Hongfei; Chen, George

doi:10.1021/acsami.3c13359

ACS Appl. Mater. Interfaces

2023

DOI: 10.1021/acsami.3c13359

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Synergistic Improvement of Dielectric and Thermal Conductivity Properties for Polymers Filled with Multifunctional Modified Nanowires

Guan Li,

Ying Gao,

Huijing Liu

et al.

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2024

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Cited by 3 publications

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Epsilon‐negative materials with lower percolation threshold derived from segregated structures

Yuan,

Yang,

Wang

et al. 2024

Polymer Composites

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Epsilon‐negative materials (ENM) at radio frequency, usually designed based on percolation theory, recently drew much attention because of their potential applications in capacitors, transistors, and antennas. However, randomly distributed conductive functional materials cannot achieve directional long‐range electron transportation within the material, resulting in decreased utilization efficiency. The morphology design of the substrate material can change the distribution state and electron transfer pathway of conductive fillers. By controlling the size of the polystyrene (PS) and the content of multi‐walled carbon nanotubes (MWCNTs), PS/MWCNTs composites with random structures and segregated structures were designed, both of which exhibited negative permittivity with increasing MWCNTs content. Further investigation revealed that negative permittivity behavior is due to the establishment of the conductive network and the plasma oscillation of free electrons. Moreover, components with segregated structures have lower percolation thresholds, as directional electron transport is achieved and conductive fillers are efficiently utilized. This work provides a new method for guiding the electron transport pathway and effectively changing the distribution state of conductive fillers in ENM.Highlights Negative permittivity is achieved by plasma oscillation at radio frequency. The segregated structure leads to a decrease in the percolation threshold. Epsilon‐negative materials have good prospects in inductive components.

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Epsilon‐negative materials with lower percolation threshold derived from segregated structures

Yuan,

Yang,

Wang

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

Thermal interface materials with low modulus and high thermal conductivity by manipulating multi-branched PDMS network: The disentanglement and entanglement effect of dangling chain

Zhang,

Wen,

Sheng

et al. 2024

Chemical Engineering Journal

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Simultaneous improvements in energy density and thermal conductivity of PAN polymer nanocomposites enabled by core-shell structure BZCT@BNNS nanofibers

Wu,

Xu,

et al. 2024

Materials Today Nano

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Synergistic Improvement of Dielectric and Thermal Conductivity Properties for Polymers Filled with Multifunctional Modified Nanowires

Cited by 3 publications

References 49 publications

Epsilon‐negative materials with lower percolation threshold derived from segregated structures

Epsilon‐negative materials with lower percolation threshold derived from segregated structures

Thermal interface materials with low modulus and high thermal conductivity by manipulating multi-branched PDMS network: The disentanglement and entanglement effect of dangling chain

Simultaneous improvements in energy density and thermal conductivity of PAN polymer nanocomposites enabled by core-shell structure BZCT@BNNS nanofibers

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