Mapping the residual strain of carbon nanotubes in DWCNT/epoxy nanocomposites after tensile load using Raman microscopy

Laurenzi, Susanna; Botti, S.; Rufoloni, A.

doi:10.1016/j.coco.2020.100424

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…However, in spite of their exceptional qualities, the use of carbon nanoparticles shows some drawbacks related to their processing. In fact, the enhancement of composite material properties, due to the introduction of carbon nanoparticles, strongly depends on the filler dispersion state [18][19][20], a critical aspect in the fabrication of nanocomposite materials [7,10,21]. Although homogeneous dispersion is an essential requirement for the development of a percolating network, which is responsible for the increase in the electrical and thermal properties of nanocomposites [22] and for the improvement of the fracture toughness [21,23], reaching a proper dispersion state of carbon nanofillers in a polymer blend may be very hard [24].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, the enhancement of composite material properties, due to the introduction of carbon nanoparticles, strongly depends on the filler dispersion state [18][19][20], a critical aspect in the fabrication of nanocomposite materials [7,10,21]. Although homogeneous dispersion is an essential requirement for the development of a percolating network, which is responsible for the increase in the electrical and thermal properties of nanocomposites [22] and for the improvement of the fracture toughness [21,23], reaching a proper dispersion state of carbon nanofillers in a polymer blend may be very hard [24]. Indeed, carbon nanotubes, especially single-wall carbon nanotubes, have a strong tendency to form agglomerates and clusters as a consequence of the van der Waals forces [18,20].…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

et al. 2023

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In this work, we investigate the processability and the volumetric electrical properties of nanocomposites made of aerospace-grade RTM6, loaded with different carbon nanoparticles. Nanocomposites with graphene nanoplatelets (GNP), single-walled carbon nanotubes (SWCNT) and hybrid GNP/SWCNT in the ratio 2:8 (GNP2SWCNT8), 5:5 (GNP5SWCNT5) and 8:2 (GNP8SWCNT2) were manufactured and analyzed. The hybrid nanofillers are observed to have synergistic properties as epoxy/hybrid mixtures showed better processability than epoxy/SWCNT, while maintaining high values of electrical conductivity. On the other hand, epoxy/SWCNT nanocomposites present the highest electrical conductivities with the formation of a percolating conductive network at lower filler content, but very large viscosity values and filler dispersion issues, which significantly affect the final quality of the samples. Hybrid nanofiller allows us to overcome the manufacturing issues typically associated with the use of SWCNTs. The combination of low viscosity and high electrical conductivity makes the hybrid nanofiller a good candidate for the fabrication of aerospace-grade nanocomposites with multifunctional properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

et al. 2023

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“…In polymer matrix composites, the transfer of stress between the polymer and the MWCNTs can be strengthened by a high aspect ratio of MWCNTs, eventually leading to good interfacial bonding in composite materials. 13 Various failure mechanisms have been addressed, covering experimental and theoretical observations obtained from MWCNTs reinforced polymer matrix composites. The dominant failure modes related to the fracture toughness as MWCNTs pull-out, severe matrix deformation, debonding between MWCNTs and epoxy matrix, and crack bridging due to MWCNTs.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of pMWCNTs filled glass fiber/epoxy nanocomposites: Synthesis and interfacial failure

Mandal

Sethi

Biswas

2022

J of Applied Polymer Sci

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Glass fiber reinforced polymer composite (GFRP) encounter many practical situations during its application, exposed to different temperature fluctuation.Absorption of moisture and the fluctuated thermal environment cause mechanical degradation of GFRP. The current plan is to explore the mechanical and chemical behavior of pristine multiwall carbon nanotubes (pMWCNTs)-glass fiber strengthens epoxy composites during thermal shock (TS). The laminates were prepared by the hand-lay-up process followed by compression molding. The thermal shock was performed at the temperature for the required samples was 135 C for 24 h, followed by À135 C for 24 h. A flexural test has been carried out at 1 mm/min loading speed. 0.2 wt% pMWCNTs filled nanocomposite appeared to have the highest flexural strength and modulus compared to ambient samples. The thermomechanical behavior of nanocomposites has been accomplished by analyzing the dynamic mechanical thermal analysis graph (DMTA). Field emission scanning electron microscope (FESEM) analyzed the fracture surface of in-situ mechanical failure samples to find out the primary failure modes for strengthening and weakening mechanisms. The glass transition temperature (T g ) of the nanocomposite observed decreased due to homogeneous dispersion of pMWCNTs, imparting some effect on crosslink density and reinforcement up to 0.2 wt%. This study reveals that the uniform distribution of pMWCNTs and thermal shock treatment enhances the matrix stiffness and improves the mechanical properties.

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Properties of Epoxy Composites with Halloysite Nanotubes Subjected to Tensile Testing

Tkach

Bichaev

2021

Lecture Notes in Civil Engineering

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Mapping the residual strain of carbon nanotubes in DWCNT/epoxy nanocomposites after tensile load using Raman microscopy

Cited by 8 publications

References 23 publications

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

Hybrid Carbon Nanocomposites Made of Aerospace-Grade Epoxy Showing Synergistic Effects in Electrical Properties and High Processability

Flexural behavior of pMWCNTs filled glass fiber/epoxy nanocomposites: Synthesis and interfacial failure

Properties of Epoxy Composites with Halloysite Nanotubes Subjected to Tensile Testing

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