Influence of carbon nanotube reinforcement on the processing and the mechanical behaviour of carbon fiber/epoxy composites

Godara, A.; Mezzo, L.; Luizi, F.; Warrier, Ashish; Lomov, Stepan Vladimirovitch; Vuure, Aart Willem Van; Gorbatikh, Larissa; Moldenaers, Paula; Verpoest, Ignaas

doi:10.1016/j.carbon.2009.06.039

Cited by 388 publications

(230 citation statements)

References 30 publications

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“…However, a key challenge with using this method is the very large increase in resin viscosity that accompanies CNT introduction. To address this issue and to support commercialization of CNT-modified hierarchical composites, prepregging has also been examined for the integration of modified resins with the reinforcing fibers [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Ashrafi

Guan

Mirjalili

et al. 2011

Composites Science and Technology

212

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Carbon nanotubes (CNT) in their various forms have great potential for use in the development of multifunctional multiscale laminated composites due to their unique geometry and properties. Recent advancements in the development of CNT hierarchical composites have mostly focused on multi-walled carbon nanotubes (MWCNT). In this work, single-walled carbon nanotubes (SWCNT) were used to develop nano-modified carbon fiber/epoxy laminates. A functionalization technique based on reduced SWCNT was employed to improve dispersion and epoxy resin-nanotube interaction. A commercial prepregging unit was then used to impregnate unidirectional carbon fiber tape with a modified epoxy system containing 0.1 wt% functionalized SWCNT. Impact and compression-after-impact (CAI) tests, Mode I interlaminar fracture toughness and Mode II interlaminar fracture toughness tests were performed on laminates with and without SWCNT. It was found that incorporation of 0.1 wt% of SWCNT resulted in a 5% reduction of the area of impact damage, a 3.5% increase in CAI strength, a 13% increase in Mode I fracture toughness, and 28% increase in Mode II interlaminar fracture toughness. A comparison between the results of this work and literature results on MWCNT-modified laminated composites suggests that SWCNT, at similar loadings, are more effective in enhancing the mechanical performance of traditional laminated composites.Crown

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Section: Introductionmentioning

confidence: 99%

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Ashrafi

Guan

Mirjalili

et al. 2011

Composites Science and Technology

212

View full text Add to dashboard Cite

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“…Gojny et al [8], Ayatollahi et al [11] and Srivastava and Singh [31] observed similar increases in the roughness of the fracture surfaces with CNT incorporation, which was attributed to the blocking effect of CNTs to crack expansion and changes in the crack propagation direction [32], resulting in a fracture mechanism similar to the one exhibited in ductile failure. According to [8,33], nonfunctionalized CNTs produce a weak interfacial adhesion between the CNTs, then can act as defects, and therefore degrade the property; nevertheless according to [34] these defects can be beneficial to produce ductility. When the crack tip grows, the CNTs debonded from the epoxy produce a local stresses increment at the crack tip [35].…”

Section: Resultsmentioning

confidence: 99%

Multiscale Characterization of Nanoengineered Fiber-Reinforced Composites: Effect of Carbon Nanotubes on the Out-of-Plane Mechanical Behavior

Medina

Fernández

Salas

et al. 2017

Journal of Nanomaterials

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The mechanical properties of the matrix and the fiber/matrix interface have a relevant influence over the mechanical properties of a composite. In this work, a glass fiber-reinforced composite is manufactured using a carbon nanotubes (CNTs) doped epoxy matrix. The influence of the CNTs on the material mechanical behavior is evaluated on the resin, on the fiber/matrix interface, and on the composite. On resin, the incorporation of CNTs increased the hardness by 6% and decreased the fracture toughness by 17%. On the fiber/matrix interface, the interfacial shear strength (IFSS) increased by 22% for the nanoengineered composite (nFRC). The influence of the CNTs on the composite behavior was evaluated by through-thickness compression, short beam flexural, and intraply fracture tests. The compressive strength increased by 6% for the nFRC, attributed to the rise of the matrix hardness and the fiber/matrix IFSS. In contrast, the interlaminar shear strength (ILSS) obtained from the short beam tests was reduced by 8% for the nFRC; this is attributed to the detriment of the matrix fracture toughness. The intraply fracture test showed no significant influence of the CNTs on the fracture energy; however, the failure mode changed from brittle to ductile in the presence of the CNTs.

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“…Godara et al 24 observed an increase in crack initiation energy (GI c ) up 75% in MWCNT-epoxy system with a compatibilizer compared to the benchmark carbon epoxy system. Davis et al 25 tested carbon fiber reinforced epoxy composite with different amounts of fluorine functionalized CNTs.…”

Section: Introductionmentioning

confidence: 99%

The Carbon Nanotubes Effect into Single-lap Joint Failure Modes and Load Capacity: a Macromechanical Analysis

Monteiro

Ávila

2018

Mat. Res.

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This study investigates the influence of the adhesive (epoxy resin) thickness and the dispersions of non-functionalized carbon based nanostructures (carbon nanotubes -CNT) on mechanical properties of single-lap bonded joints. To achieve this goal, three CNT concentrations (0.5%, 1.0% and 2.0% m/m); and three different bondline thicknesses (0.05 mm, 0.15 mm and 0.40 mm) were evaluated. The mechanical properties were measured using the apparent shear tensile test, based on ASTM D5868. The results showed that the addition of 1.0 wt% CNTs improved the interface strength, leading to an increase on delaminated areas in failure region up to 55.36% and also improving the peak force up to 13.85%. Decrease in adhesive thickness from 0.40 mm to 0.05 mm promoted a stress redistribution inside adhesive layer improving the peak force up to 13.91%. CNT seems to promote changes in failure modes, light fiber tear (LFT) failure significantly increases up to 45.96%, indicating that interface strength between adhesive and adherent was improved.

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Influence of carbon nanotube reinforcement on the processing and the mechanical behaviour of carbon fiber/epoxy composites

Cited by 388 publications

References 30 publications

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Enhancement of mechanical performance of epoxy/carbon fiber laminate composites using single-walled carbon nanotubes

Multiscale Characterization of Nanoengineered Fiber-Reinforced Composites: Effect of Carbon Nanotubes on the Out-of-Plane Mechanical Behavior

The Carbon Nanotubes Effect into Single-lap Joint Failure Modes and Load Capacity: a Macromechanical Analysis

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