Survey on Joint Paradigm of 5G and SDN Emerging Mobile Technologies: Architecture, Security, Challenges and Research Directions

Wireless Personal Communications, Год журнала: 2023, Номер 130(4), С. 2753 - 2800

Опубликована: Апрель 19, 2023

Язык: Английский

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Electric‐Field‐Induced Alignment of Functionalized Carbon Nanotubes Inside Thermally Conductive Liquid Crystalline Polyimide Composite Films

Angewandte Chemie, Год журнала: 2023, Номер 135(38)

Опубликована: Авг. 7, 2023

Abstract The positive liquid crystals, 4′‐heptyl‐4‐biphenylcarbonitrile (7CB), are used to functionalize carbon nanotubes (LC‐CNT), which can be aligned in the crystalline polyimide (LC‐PI) matrix under an alternating electric field fabricate thermally conductive LC‐CNT/LC‐PI composite films. efficient establishment of thermal conduction pathways films with a low amount LC‐CNT is achieved through oriented alignment within LC‐PI matrix. When mass fraction 15 wt %, in‐plane conductivity coefficient ( λ ∥ ) and through‐plane ⊥ reach 4.02 W/(m ⋅ K) 0.55 W/(m⋅K), 90.5 % 71.9 higher than those intrinsically respectively, also 28.8 5.8 CNT/LC‐PI respectively. Meanwhile, possess excellent mechanical heat resistance properties. Young's modulus index 2.3 GPa 297.7 °C, same CNT.

Язык: Английский

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Cerium Methacrylate Assisted Preparation of Highly Thermally Conductive and Anticorrosive Multifunctional Coatings for Heat Conduction Metals Protection

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

Опубликована: Авг. 18, 2023

Preparing polymeric coatings with well corrosion resistance and high thermal conductivity (TC) to prolong operational life ensure service reliability of heat conductive metallic materials has long been a substantive urgent need while difficult task. Here we report multifunctional epoxy composite coating (F-CB/CEP) by synthesizing cerium methacrylate ingeniously using it as novel curing agent inhibit for resin modifier boron nitride through "cation-π" interaction. The prepared F-CB/CEP presents TC 4.29 W m-1 K-1, which is much higher than other reported anti-corrosion polymer thereby endowing metal coated this outstanding management performance compared those pure coating. Meanwhile, the low-frequency impedance remains at 5.1 × 1011 Ω cm2 even after 181 days immersion in 3.5 wt% NaCl solution. Besides, also exhibits hydrophobicity, self-cleaning properties, temperature adhesion. This work provides valuable insights preparation high-performance potential be used advanced materials, especially conduction metals protection.

Язык: Английский

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Highly Thermoconductive, Strong Graphene-Based Composite Films by Eliminating Nanosheets Wrinkles

Nano-Micro Letters, Год журнала: 2023, Номер 16(1)

Опубликована: Ноя. 17, 2023

Graphene-based thermally conductive composites have been proposed as effective thermal management materials for cooling high-power electronic devices. However, when flexible graphene nanosheets are assembled into macroscopic composites, capillary forces induce shrinkage of to form wrinkles during solution-based spontaneous drying, which greatly reduces the conductivity composites. Herein, nanosheets/aramid nanofiber (GNS/ANF) composite films with high were prepared by in-plane stretching GNS/ANF hydrogel networks hydrogen bonds and π-π interactions. The mechanical eliminates suppressing inward due drying achieves a orientation nanosheets, thereby creating fast heat transfer channel. (GNS/ANF-60 wt%) eliminated showed significant increase in (146 W m

Язык: Английский

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Covalently modified graphene and 3D thermally conductive network for PEEK composites with electromagnetic shielding performance

Composites Part A Applied Science and Manufacturing, Год журнала: 2023, Номер 173, С. 107633 - 107633

Опубликована: Май 27, 2023

Язык: Английский

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