Mechanical and thermal properties of carbon nanotubes in carbon nanotube fibers under tension–torsion loading

Niu, Mowen; Cui, Chongxiao; Tian, Rui; Miao, Linlin; Hao, Weizhe; Li, Jiaxuan; Sui, Chao; He, Xiaodong; Zhao, Yushun

doi:10.1039/d2ra05360h

Cited by 8 publications

(5 citation statements)

References 76 publications

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“…These enhancements confirm an improved dispersion and interface interaction of the AFCNTs within the matrix. The AFCNT nanocomposites could improve the barrier effect of CNTs and prevent the volatilization of degradation components [16]. This phenomenon has proven the effect of functionalization on the heat resistance of epoxy resin.…”

Section: Thermal Propertiesmentioning

confidence: 83%

“…The carbon nanotube (CNT), a one-dimensional linear allotrope of carbon having a higher surface area, has attracted exceptional attention since its discovery, due to its outstanding mechanical and thermal properties [13,14]. Numerous studies have been done to improve its mechanical and thermal properties by reinforcing this promising nanomaterial in the field of polymer composites [15][16][17]. However, the blending of the CNT in the polymeric matrix is quite difficult due to the existence of its own strong van der Waals force and the formation of a very serious self-agglomeration.…”

Section: Introductionmentioning

confidence: 99%

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Reinforcement of Aminopropyl-Terminated Siloxane-Treated Carbon Nanotubes in Epoxy Thermosets: Mechanical and Thermal Properties

2023

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The synthesis and characterization of aminopropyl-terminated polydimethylsiloxane- treated carbon nanotube (AFCNT)-reinforced epoxy nanocomposites are reported in the current study. The amine functionalization of the CNTs was performed with a reaction to PDMS-NH2. The AFCNTs were homogeneously dispersed in epoxy resin by using an emulsifier and a three-roller mill. The AFCNTs were characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The curing behavior of the epoxy/AFCNT was studied using a differential scanning calorimeter (DSC). The tensile and impact strengths of the 2.0 wt.% AFCNT-reinforced epoxy nanocomposite were enhanced by 43.2% and 370%, respectively. Moreover, the glass transition temperature (Tg) was also enhanced by 21 °C. Furthermore, significant enhancements were observed in the initial degradation and char yield values. SEM results confirmed that the AFCNTs were highly dispersed in the polymeric matrix.

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Section: Thermal Propertiesmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Reinforcement of Aminopropyl-Terminated Siloxane-Treated Carbon Nanotubes in Epoxy Thermosets: Mechanical and Thermal Properties

2023

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“…碳纳米管是由石墨烯片卷曲而成的管状一维材料, 具有良好的导电性 [68] . 单壁碳纳米管的电导率高达10 6 S cm −1 [69] , 而多壁碳纳米管的电导率也可以达到刘新宇等: 基于CNT的柔性自支撑锌空气电池正极研究进展 3 × 10 4 S cm −1 [70] .…”

Section: 电学性能unclassified

Research progress in flexible zinc-air battery cathode based on carbon nanotube materials

LIU,

YU,

CHEN

et al. 2024

Sci. Sin.-Tech.

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As a promising technology for portable electronics, secondary flexible zinc-air batteries have received immense attention in the past decade, particularly for the design and research of the air electrode. Herein, we focused on the most recent developments of the selfsupporting air electrode based on carbon nanotube (CNT) materials. We first summarized the synthetic and fabrication methods of CNT and its structure-activity relationship. Section 2 describes the working mechanism and flexible design of the battery. Further, a detailed discussion of the recent advancements in flexible self-supporting air-positive electrodes based on CNTs is provided. As a new development, flexible zinc-air batteries are also discussed separately. Finally, conclusions are presented, followed by a future perspective on fiber-shaped CNT self-supporting air cathode. flexible zinc-air battery, carbon nanotubes, flexible design, self-supporting air electrode

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“…Significantly, investigating the concurrent impact of increased electrical conductivity and alterations in thermal conductivity in polymer thermoelectric composites is crucial. The synergistic interplay between these two thermoelectric composite properties, considering the PF, underscores the importance of a comprehensive examination [ 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PEDOT/CNTs Thermoelectric Thin Films with a High Power Factor

Nasiri,

Tong,

Cho

et al. 2024

Materials

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In this study, we have improved the power factor of conductive polymer nanocomposites by combining layer-by-layer assembly with electrochemical deposition to produce flexible thermoelectric materials based on PEDOT/carbon nanotubes (CNTs)—films. To produce films based on CNTs and PEDOT, a dual approach has been employed: (i) the layer-by-layer method has been utilized for constructing the CNTs layer and (ii) electrochemical polymerization has been used in the synthesis of the conducting polymer. Moreover, the thermoelectric properties were optimized by controlling the experimental conditions including the number of deposition cycles and electropolymerizing time. The electrical characterization of the samples was carried out by measuring the Seebeck voltage produced under a small temperature difference and by measuring the electrical conductivity using the four-point probe method. The resulting values of the Seebeck coefficient S and σ were used to determine the power factor. The structural and morphological analyses of CNTs/PEDOT samples were carried out using scanning electron microscopy (SEM) and Raman spectroscopy. The best power factor achieved was 131.1 (μWm−1K−2), a competitive value comparable to some inorganic thermoelectric materials. Since the synthesis of the CNT/PEDOT layers is rather simple and the ingredients used are relatively inexpensive and environmentally friendly, the proposed nanocomposites are a very interesting approach as an application for recycling heat waste.

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Mechanical and thermal properties of carbon nanotubes in carbon nanotube fibers under tension–torsion loading

Abstract: Systematically investigate the mechanical and thermal properties of SWCNT under tension and torsion loadings and provide references for fabricating next-generation super-CNF.

Cited by 8 publications

References 76 publications

Reinforcement of Aminopropyl-Terminated Siloxane-Treated Carbon Nanotubes in Epoxy Thermosets: Mechanical and Thermal Properties

Reinforcement of Aminopropyl-Terminated Siloxane-Treated Carbon Nanotubes in Epoxy Thermosets: Mechanical and Thermal Properties

Research progress in flexible zinc-air battery cathode based on carbon nanotube materials

Synthesis of PEDOT/CNTs Thermoelectric Thin Films with a High Power Factor

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