CNT/Epoxy-Masterbatch Based Nanocomposites: Thermal and Electrical Properties

Butt, Hassaan Ahmad; Owais, Mohammad; Сулимов, А. В.; Ostrizhiniy, Dmitry; Lomov, Stepan Vladimirovitch; Akhatov, Iskander; Abaimov, Sergey G.; Popov, Y.

doi:10.1109/nano51122.2021.9514322

Cited by 7 publications

(6 citation statements)

References 30 publications

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“…For the SWCNT nanocomposites measured using silver standard electrodes, the resistivity values for the systems with 0.25% and 0.75% by weight respectively were in the range of ~ 10 3 and ~ 10 2 Ohm•cm, respectively, which matches literature values [6]. For the same weight percentages, the MWCNT nanocomposites show electrical resistivities of ~ 10 6 and ~ 10 3 Ohm•cm, respectively, which also coincide with or are better than those reported in literature [51,52]. This shows that the nanocomposites incorporating the novel CNTF electrodes deliver the expected performance and are thus suitable for examining their detection capability.…”

Section: Electrical Resistivity Measurementssupporting

confidence: 84%

Multifunctional nanocomposite assessment using carbon nanotube fiber sensors

Butt,

Krasnikov,

Kondrashov

et al. 2024

Preprint

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Here, we propose a novel application of carbon nanotube fibers (CNTFs) for the one-step, dual-stage, non-destructive monitoring of multifunctional conductive nanocomposites. Hierarchical nanocomposites were created by embedding CNTFs into carbon nanotube (CNT) - modified matrices during their manufacturing to assess production variables. CNTFs are then left embedded in the structure for monitoring during nanocomposite application. We investigated the dependence of detection sensitivity and reliability on the CNTF diameter (~ 40–700 µm), electrical conductivity (~ 102-104 S/m), and the choice of measurement technique (2- and 4-point) for single-walled and multiwalled CNT fillers at different concentrations. The sensors showed promising sensitivity to CNT type and concentration, the results were independent of CNTF diameter and contact resistance, and showed low noise. For application monitoring, nanocomposites electrical and mechanical (tensile and cyclic) properties were tested to determine sensitivity to static and dynamic conditions. CNTFs did not cause any reduction in mechanical properties, unlike the losses observed for metallic electrodes (up to 60% reduction in ultimate tensile strength). CNTF-based evaluation of the electrical resistivity (between 102 — 106 Ohm∙cm) and dynamic electrical response (gauge factor between ~ 2 — 12) matched values from a standard electrode material. Microstructural analysis proved that this unique performance was due to the surface and internal volume infiltration of the nanocomposite matrices into the CNTFs, causing interconnection of the CNTs of the matrix and CNTFs. These findings show that CNTFs may be used to accurately monitor nanocomposite multifunctional properties both during manufacturing and application using one-step integration, regardless of the sample size and manufacturing technology.

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Section: Electrical Resistivity Measurementssupporting

confidence: 84%

Multifunctional nanocomposite assessment using carbon nanotube fiber sensors

Butt,

Krasnikov,

Kondrashov

et al. 2024

Preprint

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“…Having experience working with CNTs to create nanocomposite materials, we can find areas of application of CNTs in electronics [28][29][30]. This study extends the exploration initiated in a previous study in the development of nanocomposite thin film structures utilizing poly-arylenephthalide matrices with single-walled carbon nanotubes (SWCNT) and graphene oxide fillers [31].…”

Section: Cnt/epoxy-masterbatch Based Nanocompositessupporting

confidence: 52%

CNT thin films based on epoxy mixtures: fabrication, electrical characteristics

Yumalin,

Salikhov,

Mahato

et al. 2024

Chim.Tech.Acta

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The simple scaling of silicon transistors no longer ensures the advantages of high energy efficiency, driving research into nanotechnologies beyond silicon. Specifically, digital circuits based on carbon nanotube (CNT) field-effect transistors promise significant advantages in energy efficiency. However, the inability to perfectly control internal nanoscale defects and the variability of carbon nanotubes hinder the realization of very large-scale integrated systems. In this study, we investigated a novel method for fabricating transistors based on carbon nanotubes (CNTs) using epoxy mixtures, obtained the electrical properties of the transistors, and compared their microstructure and composition via the scanning electron microscopy. The carrier mobility on epoxy-based transistors was 28.87 cm²/V∙s, and the transistor switching frequency was 2.2 MHz. The samples exhibited electrical and physical stability over an extended period of time. The use of carbon nanotubes in epoxy resin as a conducting layer for transistors opens significant prospects in the field of electronics. The CNT-epoxy mixture technology allows for more flexible and rapid fabrication of thin-film transistors compared to classical methods. However, it is not appropriate to speak of a complete replacement; in this study, we present an alternative method for producing thin-film transistors, which may be of interest for specific purposes.

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“…Carbon nanofillers have sparked a lot of attention because of their unique features, including improved thermal and electrical conductivity, high mechanical strength, and ease of processing [26][27][28][29]. One viable technique for maximizing the benefits of carbon nanofillers is to segregate them into a strong three-dimensional (3D) structure for greatly improved properties relative to one-dimensional (1D) and two-dimensional (2D) structures.…”

Section: Thermally Conductive 3d Aerogels Based On Carbon Nanofillersmentioning

confidence: 99%

“…Due to their inherent high TC, of around 6600 W/mK (via MD simulation) and ~3000 W/mK (experimentally) [66], CNTs exhibit a vital role in TIMs for the dissipation of heat energy in electronic devices, with important factors including alignment/orientation, loading percentages, dispersion, density, aspect ratio, presence of topological and inherent structural defects, and chemical interaction of polymer matrix materials with CNTs [67,68]. In the case of a 3D framework aerogel structure [2,26], vertically aligned carbon nanotubes (VACNTs) are an ideal material for achieving a high TC with good mechanical characteristics [69]. By improving the contact at the interface or densifying the CNTs, the thermal interface resistance is decreased, resulting in an increased TC.…”

Section: Thermally Conductive 3d Aerogels Based On 1d Carbon Nanofillersmentioning

confidence: 99%

Recent Studies on Thermally Conductive 3D Aerogels/Foams with the Segregated Nanofiller Framework

et al. 2022

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As technology advances toward ongoing circuit miniaturization and device size reduction followed by improved power density, heat dissipation is becoming a key challenge for electronic equipment. Heat accumulation can be prevented if the heat from electrical equipment is efficiently exported, ensuring a device’s lifespan and dependability and preventing otherwise possible mishaps or even explosions. Hence, thermal management applications, which include altering the role of aerogels from thermally insulative to thermally conductive, have recently been a hot topic for 3D-aerogel-based thermal interface materials. To completely comprehend three-dimensional (3D) networks, we categorized and comparatively analyzed aerogels based on carbon nanomaterials, namely fibers, nanotubes, graphene, and graphene oxide, which have capabilities that may be fused with boron nitride and impregnated for better thermal performance and mechanical stability by polymers, including epoxy, cellulose, and polydimethylsiloxane (PDMS). An alternative route is presented in the comparative analysis by carbonized cellulose. As a result, the development of structurally robust and stiff thermally conductive aerogels for electronic packaging has been predicted to increase polymer thermal management capabilities. The latest trends include the self-organization of an anisotropic structure on several hierarchical levels within a 3D framework. In this study, we highlight and analyze the recent advances in 3D-structured thermally conductive aerogels, their potential impact on the next generation of electronic components based on advanced nanocomposites, and their future prospects.

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CNT/Epoxy-Masterbatch Based Nanocomposites: Thermal and Electrical Properties

Cited by 7 publications

References 30 publications

Multifunctional nanocomposite assessment using carbon nanotube fiber sensors

Multifunctional nanocomposite assessment using carbon nanotube fiber sensors

CNT thin films based on epoxy mixtures: fabrication, electrical characteristics

Recent Studies on Thermally Conductive 3D Aerogels/Foams with the Segregated Nanofiller Framework

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