Toughness, flexural, damping and interfacial properties of hybridized GFRE composites with MWCNTs

Khashaba, U.A.

doi:10.1016/j.compositesa.2014.10.008

Cited by 39 publications

(26 citation statements)

References 35 publications

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“…The aggregated CNTs are in the form of bundles or ropes, usually with highly entangled network structure that is very difficult to disperse [2,[12][13][14][15]. The aggregated MWCNTs in the developed composites can be considered as discontinuities, which have great effect on the fracture toughness.…”

Section: Introductionmentioning

confidence: 99%

“…Improvement degree in the mechanical properties of epoxy filled with different nanofillers was attributed to the interfacial bonding, which is responsible for transferring the applied load from the weak matrix to the higher strength/stiffness nanofillers. The most common methods used for characterizing the interfacial bonding for bulk composites, are the short beam shear test, Iosipescu shear test [4,12,16] and single-lap test [17]. In this work, Iosipescu shear test is used to characterize the interfacial bonding of the developed MWCNTs-composites.…”

Section: Introductionmentioning

confidence: 99%

“…Toughening engineering polymers has received much attention because it generally does not lead to a dramatic decrease in other desired mechanical properties compared to metallic materials. In epoxy-based MWCNTscomposites, we can never be totally sure that a material is voids and agglomerations free [12].…”

Section: Introductionmentioning

confidence: 99%

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Improvement of toughness and shear properties of multiwalled carbon nanotubes/epoxy composites

Khashaba

2016

Polymer Composites

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In this work, Epocast 50-A1/946 epoxy have been modified with different weight percentages (0.25, 0.5, 0.75, 0.1, 1.25, and 1.5 wt%) of multiwalled carbon nanotubes (MWCNTs). Because of Epocast epoxy was primarily developed for joining and repairing of composite aircraft structural components, the optimum weight percentage of MWCNTs must be determined based on trade-offs between the optimum tensile, inplane shear and toughness properties of the developed MWCNTs-composites, which is the objective of this study. The effect of MWCNTs on the toughness and inplane shear was studied using single-edge notch tension and Iosipescu shear tests, respectively. The experimental results showed that the composite materials with 0.75 wt% MWCNTs has the highest improvement in the in-plane shear properties compared to the neat epoxy. While the maximum improvements in the tensile and toughness properties were observed at 0.5 wt% MWCNTs. Eleven models were selected from an extensive literature survey, for predicting the in-plane shear moduli of the developed MWCNTs-composites. The modified rule of mixture can effectively predict the in-plane shear moduli of the composites with MWCNTs up to 0.75 wt%. While the nonlinear behavior of the modified Halpin-Tsai model with exponential shape function is the closest to the experimental results up to 1.5 wt% MWCNTs. POLYM. COMPOS., 00:000-000, 2016.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improvement of toughness and shear properties of multiwalled carbon nanotubes/epoxy composites

Khashaba

2016

Polymer Composites

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“…[1][2][3] In recent years, researchers have paid more attention to reducing noise and vibration in engineering elds. 4,5 On account of their good viscoelasticity and processability, polymers are the most widely used damping materials as they can dissipate most external mechanical energy into heat through friction between macromolecular segments near T g . 6,7 Loss factor (tan d) is normally used to measure damping behavior of materials.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of polyurethane/epoxy IPNs filled graphene aerogel with improved damping, thermal and mechanical properties

Zhang

Chen

et al. 2018

RSC Adv.

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“…Nanofillers also strengthen synthetic fibre hybrid composites. The hybridisation of glass/epoxy laminates with MWCNTs leads to an increase of up to 30% for its natural frequencies, toughness, and flexural strength (Khashaba 2015). Moreover, improvements of as much as 12% have been reported in the strength and stiffness of the epoxy by introducing MWCNTs into carbon fibre reinforced composites, hence increasing the overall tensile properties (Tehrani et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Multi-walled CNT in Bamboo/Glass Fibre Hybrid Composites: Tensile and Flexural Properties

et al. 2018

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Recently, polymer nanocomposites have been fabricated using carbon nanotubes (CNTs) as reinforcement nanofillers. However, the effect of incorporating CNT/polymer into hybrid composites with natural fibre is not clear. This study investigated the effect of using multi-walled carbon nanotube material (MWCNT) as the nanofiller on the tensile and flexural properties of bamboo/glass fibre hybrid composites. Composites containing various weight fractions of CNTs (0.1 wt.%, 0.3 wt.%, 0.5 wt.%, and 1.0 wt.%) were compared with the control hybrid composites. The hybrid composites were prepared with epoxy resin. The experimental results revealed an increase in the tensile strength of the composites with the addition of up to 0.5 wt.% CNTs (+7.7% over the control hybrid). However, beyond this value, i.e., with 1.0 wt.% CNT additives, the composite strength showed a remarkable decrease (-36.8% compared with the control hybrid). Moreover, introducing CNTs into hybrid composites resulted reduced the flexural properties with increasing weight fractions as low as 8.45% compared with the controls. In sum, the tensile properties increased with the addition of up to 0.5 wt.% CNTs, but there was a decrease in the flexural properties.

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Toughness, flexural, damping and interfacial properties of hybridized GFRE composites with MWCNTs

Cited by 39 publications

References 35 publications

Improvement of toughness and shear properties of multiwalled carbon nanotubes/epoxy composites

Improvement of toughness and shear properties of multiwalled carbon nanotubes/epoxy composites

Facile fabrication of polyurethane/epoxy IPNs filled graphene aerogel with improved damping, thermal and mechanical properties

The Effects of Multi-walled CNT in Bamboo/Glass Fibre Hybrid Composites: Tensile and Flexural Properties

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