Effect of CNTs addition on the fracture behaviour of neat epoxy and epoxy-carbon fiber-reinforced composites

Shekar, K. Chandra; Prasad, B. Anjaneya; Singaravel, B.; Prasad, N. Eswara

doi:10.1063/1.5085614

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…The pullout exhibited in Figure 2(A–D) confirms the bridging between filler and matrix. With the action of the tensile stress and increase in filler loading more filler particles are pulled out from the CNC composite material leading to the formation of more cracks and cavities due to which a slight increment is noticed in the tensile strength at maximum filler loading (CNC4) 35,40 …”

Section: Resultsmentioning

confidence: 99%

Excellent electromagnetic interference shielding performance of polypropylene/carbon fiber/multiwalled carbon nanotube nanocomposites

Kaushal

Singh

2022

Polymer Composites

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In this study, we investigated the mechanical, DC conductivity, and electromagnetic interference (EMI) shielding properties of multiwalled carbon nanotubes (MWCNTs) and carbon fiber reinforced polypropylene (CNC) nanocomposites. The nanocomposites were prepared by melt processing technique using a twin‐screw extruder followed by injection molding. This combination of CF and MWCNT improved the tensile strength and modulus of the nanocomposites by up to 31.14% and 60.14%. The percolation behavior helped to improve the DC electrical conductivity from 2.07 × 10−10 to 9.58 × 10−2 s/cm. The CNC nanocomposites exhibited shielding effectiveness of 51.9 dB at maximum filler loading in the X‐band (8.2–12.4 GHz) for a 2 mm thick sample. In addition, efforts have been made to develop a compatible EMI shielding material using multiple fillers.

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Section: Resultsmentioning

confidence: 99%

Excellent electromagnetic interference shielding performance of polypropylene/carbon fiber/multiwalled carbon nanotube nanocomposites

Kaushal

Singh

2022

Polymer Composites

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“…In CNT-reinforced composites, CNTs are easily pinned in the grain interiors. The fracture mode of the materials changes from intergranular fracture to transgranular fracture owing to the effect of CNTs' bridging and pinning; thus, more energy can be absorbed [6][7][8]. In addition, the fracture toughness of the materials was strengthened by the broken and pulled-out CNTs.…”

Section: Introductionmentioning

confidence: 99%

On interfacial stress transmission of carbon nanotubes/alumina composites

Yang

Zhou²,

Wei³

2023

Mater. Res. Express

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The interface of carbon nanotube (CNTs)/alumina ceramic composites has a very important effect on their mechanical properties. In this study, an appropriate theoretical cell model was established to study the interfacial stress transmission in CNT/alumina composites. The stress transfer equation is derived as follows: The tensile stress of the CNTs and interfacial shear stress were simulated under an axial tension load, and the relationship between the stress transmission and the effective length of the CNTs was analyzed. The theoretical results were compared with the FEM results, and the results were found to be in good agreement. This study can provide a theoretical basis for adjusting the appropriate length of CNTs and interfacial interactions under different tension loads.

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“…These materials are used in aerospace, transportation, wind turbine blades, electromagnetic interference shielding, and expensive sporting goods, etc. [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. It is very important to understand whether CNT is attracted more by carbon fiber or epoxy resin in order to control the CNT dispersion.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Three-Phase Structure of Epoxy Resin/CNT/Graphene by Molecular Simulation

Naito

Koyanagi

Komukai³

et al. 2020

Polymers

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In this study, the three-phase structure consisting of epoxy resin, carbon nanotubes (CNTs), and graphene, which is assumed to be the surface of carbon fiber, was simulated using molecular dynamics. Models in which the CNT number and initial position of CNT are varied were prepared in this study. Relaxation calculation for each three-phase model was implemented, and the movement of molecules was investigated. When CNTs are located between the graphene and epoxy at initial, how the epoxy approaches to graphene was discussed. Besides, interaction energies between CNT/graphene, CNT/epoxy, and graphene/epoxy were evaluated after relaxations. The value of the interaction energy between two individual molecules (epoxy resin and graphene, CNTs and graphene, epoxy resin and CNTs) among three-phase structure were obtained, respectively, and those mechanisms were discussed in this study.

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Effect of CNTs addition on the fracture behaviour of neat epoxy and epoxy-carbon fiber-reinforced composites

Cited by 5 publications

References 15 publications

Excellent electromagnetic interference shielding performance of polypropylene/carbon fiber/multiwalled carbon nanotube nanocomposites

Excellent electromagnetic interference shielding performance of polypropylene/carbon fiber/multiwalled carbon nanotube nanocomposites

On interfacial stress transmission of carbon nanotubes/alumina composites

Analysis of Three-Phase Structure of Epoxy Resin/CNT/Graphene by Molecular Simulation

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