Effect of CNT orientation on the mechanical property and fracture mechanism of vertically aligned carbon nanotube/carbon composites

Shen, Sijia; Yang, Lingwei; Wang, C.; Wei, Liming

doi:10.1016/j.ceramint.2019.10.230

Cited by 22 publications

(13 citation statements)

References 30 publications

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“…That is why a densely packed and well-aligned CNT network is preferred when preparing CNT/polymer composites: more CNTs readily respond to the external loading. A similar positive effect of the alignment degree of CNTs was also reported for CNT/C composites. ,,, Therefore, CNT preforms of either fibers or films with a high alignment degree are preferred as starting materials for CNT/C composite fabrications.…”

Section: Mechanical Reinforcement Mechanism Of Cnt/c Compositessupporting

confidence: 69%

Carbon Nanotube Reinforced Strong Carbon Matrix Composites

Zhang

Suresh

et al. 2020

ACS Nano

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As an excellent candidate for lightweight structural materials and nonmetal electrical conductors, carbon nanotube reinforced carbon matrix (CNT/C) composites have potential use in technologies employed in aerospace, military, and defense endeavors, where the combinations of light weight, high strength, and excellent conductivity are required. Both polymer infiltration pyrolysis (PIP) and chemical vapor infiltration (CVI) methods have been widely studied for CNT/C composite fabrications with diverse focuses and various modifications. Progress has been reported to optimize the performance of CNT/C composites from broad aspects, including matrix densification, CNT alignment, microstructure control, and interface engineering, etc. Recent approaches, such as using resistance heating for PIP or CVI, contribute to the development of CNT/C composites. To deliver a timely and up-to-date overview of CNT/C composites, we have reviewed the most recent trends in fabrication processes, summarized the mechanical reinforcement mechanism, and discussed the electrical and thermal properties, as well as relevant case studies for high-temperature applications. Conclusions and perspectives addressing future routes for performance optimization are also presented. Hence, this review serves as a rundown of recent advances in CNT/C composites and will be a valuable resource to aid future developments in this field.

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Section: Mechanical Reinforcement Mechanism Of Cnt/c Compositessupporting

confidence: 69%

Carbon Nanotube Reinforced Strong Carbon Matrix Composites

Zhang

Suresh

et al. 2020

ACS Nano

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“…G band was corresponded to the fundamental lattice vibration (first‐order) due to CC tangential‐stretching. [ 38 ] Moreover, for the BT–aCNT/PDMS composite and BT–aCNT/PDMS composite, these spectra possess both BT characteristic peaks and CNT characteristic peaks. Apart from this, as shown in Figure 3, BT characteristic peaks at 727 cm −1 and 527 cm −1 shifted to the lower wavenumber, while the CNT characteristic peaks of the D band and G band shifted to the higher wavenumber.…”

Section: Resultsmentioning

confidence: 99%

Enhanced dielectric performance of polydimethylsiloxane‐based ternary composites films via tailored hydrogen bonds between carbon nanotube and barium titanate as modified fillers

Tang

Liu

Wang

et al. 2021

Vinyl Additive Technology

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A series of BT–cCNT/PDMS and BT–aCNT/PDMS composites were developed by incorporating barium titanate (BT) nanoparticles together with carboxylic functionalized multiwalled carbon nanotubes (cCNT) and amino functionalization multiwalled carbon nanotubes (aCNT) in polydimethylsiloxane (PDMS). Benefitting from the abundant active groups, CNTs and BTs can be in situ “bridged” by hydrogen bond in all of the BT–cCNT/PDMS and BT–aCNT/PDMS composites. Here, we studied the effect of hydrogen bonds (type and amount) between BTs and CNTs at the interface and dielectric properties of the composites. The results indicated that the BT–cCNT/PDMS composite exhibited higher dielectric constant and comparable dielectric loss than the BT–aCNT/PDMS composite, especially when weightCNT < 1 wt%. Also, the dielectric properties of BT–cCNT/PDMS composite show stronger temperature dependence than BT–aCNT/PDMS composite. Finally, the tailorable performance of the polymer‐based dielectric composites can be obtained by regulating the interface with the help of hydrogen bonds.

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“…Besides, the CNTs parallel to the deformation (Figure 8(a)) cause cracks to progress rapidly through the CNT. 74 These mechanisms explain the lower mechanical properties of CNT added NCs compared to Al 2 O 3 added ones.…”

Section: Tga Analysismentioning

confidence: 99%

Effects of nano reinforcing/matrix interaction on chemical, thermal and mechanical properties of epoxy nanocomposites

Yazman

Uyaner

Karabörk

et al. 2021

Journal of Composite Materials

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This article investigates the impact of addition various types of nanoparticles with different structural, dimensional, and morphological properties on the interphase region formed between the particle/matrix and the curing behavior of the epoxy affect the nanocomposite material properties. For this purpose, epoxy nanocomposites (NCs) were produced by adding multi-walled carbon nanotube (MWCNT) and alumina (Al2O3) nanoparticles (NPs) into the epoxy matrix at different rates (0.5–2.0 wt.%). The effects of the particle/matrix interaction on the properties of the composite have been revealed by chemical, thermal, mechanical analyzes and microstructure investigations. An increase in the absorption density, which reveals the physical interaction of nanoparticles with the epoxy matrix, was observed in Fourier-transform infrared spectroscopy. Absorption vibration peak intensities in nanocomposite samples were at most 1.0 wt.% Al2O3 and 1.25 wt.% CNT added nanocomposites. It was observed that the Tg value increased depending on the number of nanoparticles. The addition of Al2O3 increased Tg values more than CNT. Besides, the mechanical properties of NCs were determined by tensile tests. The highest increase in mechanical properties was achieved by adding 1.25 wt.% CNT and 1.0 wt.% Al2O3, respectively. Mechanical properties tended to decrease at higher addition rates. The shape, size, amount, and distribution of nanoparticles added into the epoxy matrix directly affected the NCs' properties. It has been determined that homogeneously dispersed spherical Al2O3 nanoparticles are more effective than fiber-shaped CNTs in the properties of NCs.

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Effect of CNT orientation on the mechanical property and fracture mechanism of vertically aligned carbon nanotube/carbon composites

Cited by 22 publications

References 30 publications

Carbon Nanotube Reinforced Strong Carbon Matrix Composites

Carbon Nanotube Reinforced Strong Carbon Matrix Composites

Enhanced dielectric performance of polydimethylsiloxane‐based ternary composites films via tailored hydrogen bonds between carbon nanotube and barium titanate as modified fillers

Effects of nano reinforcing/matrix interaction on chemical, thermal and mechanical properties of epoxy nanocomposites

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