Nanofillers modification of Epocast 50-A1/946 epoxy for bonded joints

Khashaba, U.A.; Aljinaidi, A.A.; Hamed, Mostafa A.

doi:10.1016/j.cja.2014.08.007

Cited by 50 publications

(53 citation statements)

References 28 publications

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“…Agglomerations of MWCNTs reduce the interfacial area in the composites and thus reduce the opportunity to take advantage of the unique nanofiller properties. It is interested to note that the optimum weight percentages of MWCNTs based on tensile properties is (50.5 wt% [2]) lower than that determined based on the in-plane shear properties (0.75 wt%).…”

Section: Resultsmentioning

confidence: 99%

“…The present work is a continuation of previous study [1,2]. Khashaba et al [2] modified Epocast 50-A1/946 epoxy through infusion of multiwalled carbon nanotubes (MWCNTs) with different weight percentage.…”

Section: Introductionmentioning

confidence: 85%

“…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%

“…The aggregated MWCNTs in the developed composites can be considered as discontinuities, which have great effect on the fracture toughness. Therefore, investigation the effect of MWCNT weight percentage on the fracture toughness is an important research area especially the developed composites exhibit remarkable stiffness and brittleness due to increasing their cross-linking density [2]. 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.…”

Section: Introductionmentioning

confidence: 99%

“…Khashaba et al [2] modified Epocast 50-A1/946 epoxy through infusion of multiwalled carbon nanotubes (MWCNTs) with different weight percentage. The optimum weight percentages of 0.5 wt% MWCNTs was determined based on the tensile properties.…”

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: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Khashaba

2016

Polymer Composites

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Improvement of the Performance of Structural Adhesive Joints with Nanoparticles and Numerical Prediction of Their Response

Taheri‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

2020

Structural Adhesive Joints

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MWCNT, nano‐silica, and nano‐clay additives effects on adhesion performance of dissimilar materials bonded joints

Çakır

Kinay

2021

Polymer Composites

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Large vehicles, ships, and airplanes are made of hybrid structures with a combination of metal and composite materials. Aluminum and fiber composites are widely used in the aerospace, automotive, and marine industries due to their high strength/weight ratios. In these industries, adhesive joints are preferred as the primary method of forming structural joints. Although the use of adhesives in a combination with different materials provides many advantages over mechanical methods, efforts are being made to increase the strength of the adhesive connection. In this study, three different nanoparticles such as nanosilica, nanoclay, and multiwalled carbon nanotubes (MWCNTs) were added to a commercial epoxy adhesive (Araldite 2014), and the shear strengths of singlelap joints made of aluminum and glass fiber reinforced polymer composite were investigated. According to the experimental results, adding nanoparticles increased the strength of the bonded joints. The best increase was determined as 62% for the connection with 0.5 wt% MWCNTs added. On the other hand, the improvement in the bond with 1.5 wt% nanoclay was found to be 37.8%, while the improvement in the bond with 1.5% nanosilica was 43.3%. Failure types of samples after the mechanical tests were analyzed by taking macro and scanning electron microscopy images from the overlap sides.

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Nanofillers modification of Epocast 50-A1/946 epoxy for bonded joints

Cited by 50 publications

References 28 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

Improvement of the Performance of Structural Adhesive Joints with Nanoparticles and Numerical Prediction of Their Response

MWCNT, nano‐silica, and nano‐clay additives effects on adhesion performance of dissimilar materials bonded joints

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