Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

Rahmat, Meysam; Naftel, Alex; Ashrafi, Behnam; Jakubinek, Michael B.; Martinez‐Rubi, Yadienka; Simard, Benoît

doi:10.1002/pc.24995

Cited by 14 publications

(13 citation statements)

References 45 publications

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“…Under short beam test conditions the specimens experience both shear and normal (due to bending) loads, and nanotubes have proven to be more effective under normal loading conditions. 33 Hence, the effectiveness of adding BNNTs to the resin is more pronounced in short beam shear results than the shear punch tests (i.e., 15% enhancement for short beam shear compared to 8% for shear punch). Hybrid laminates based on CNT composites have shown similar improvements (∼8 to 20%) in short beam shear testing.…”

Section: Resultsmentioning

confidence: 96%

“…Our previous studies of a BNNT-reinforced epoxy as an adhesive reported improvement in tensile properties and single lap shear strength with BNNT addition 32 but insignificant improvement in the double lap shear properties. 33 The double lap shear method also limits nonshear components, which are encountered in the single lap configuration. Shear punch testing is similar in that both methods are pure shear tests with negligible tension or bending components.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Shear Performance of Hybrid Glass Fiber–Epoxy Laminates Modified with Boron Nitride Nanotubes

Rahmat

Ashrafi

Naftel

et al. 2018

ACS Appl. Nano Mater.

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Matrix enhancement using nanotubes is one method to produce hybrid, multiscale fiber reinforced polymer (FRP) composites with improved interlaminar performance and added functional properties. Carbon nanotubes (CNTs) have been shown to be promising, and recent advances in the manufacturing of boron nitride nanotubes (BNNTs), which are largely unexplored for structural reinforcement of hybrid composites with microscale fibers, offer new opportunities to employ BNNTs in reinforced hybrid composite structures. This study investigates the shear and impact properties of BNNT hybrid composites, specifically glass fiber−epoxy/BNNT composite laminates. Two manufacturing techniques were used to fabricate the specimens: wet layup and vacuum-assisted resin transfer molding (VARTM). Shear punch, short beam shear, and modified Charpy tests were selected for their relevance to complex loading systems that involve shear, such as ballistic or other impact loading. The addition of 1 wt % BNNTs to the epoxy resin was found to improve the performance of the laminates: 8% increase in specific shear punch strength, 15% increase in the specific short beam shear strength, and an average of 22% increase in the specific fracture energy per area in modified Charpy tests. Improvements were lower in test cases approaching pure shear, which led to the conclusion that BNNT reinforcement most effectively improves laminate performance in more complex loading situations in which an element of normal stress, such as bending, is present. As such, BNNT reinforcement, which offers different functional properties than CNTs, is also promising to improve the impact performance in multiscale hybrid composites.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Enhanced Shear Performance of Hybrid Glass Fiber–Epoxy Laminates Modified with Boron Nitride Nanotubes

Rahmat

Ashrafi

Naftel

et al. 2018

ACS Appl. Nano Mater.

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“…composites. MeysamRahmat et al [7] examined the quasistatic and dynamic performances of epoxy in two different classes which are with and without Boron nitride nanotubes (BNNTs). In addition to pure epoxy material, they also tested samples with concentrations of 1% and 2% BNNT by weight.…”

Section: Article Info Abstractmentioning

confidence: 99%

Investigation of Mechanical and Tribological Properties of Particle Reinforced Composite Plates

AYDIN¹,

Turan²,

Sarı³

2022

European Journal of Technic

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https://dergipark.org.tr/en/pub/ejt -The addition of boric acid increases the average tensile strength up to a certain rate, -Addition of boric acid in increasing rates brings improvements in the tribological properties of the composite material, and the wear resistance increases, -If boric acid is used as reinforcement at more than a certain amount, results have been obtained suggesting that it does not change or reduce the average tensile strength value.

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“…Shear and tensile tests were performed to determine the effect of BNNTs on epoxy by Rahmat et al 25 Changes in the shear properties of epoxy were reported to be minimal and the incorporation of BNNTs had not a remarkable effect on the shear properties of adhesive joints. Moreover, tensile strength and modulus of BNNTs reinforced epoxy samples increased 7% and 16%, respectively, but a 9% decrease in the strain at failure was seen from experimental results.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of aluminum bonded joints reinforced with functionalized boron nitride and boron carbide nanoparticles

Gülteki̇n

Yazici

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the presented study, the effect of hexagonal boron nitride and hexagonal boron carbide nanoparticles on the strength of adhesively bonded joints was investigated experimentally. Hexagonal boron nitride nanoparticles were functionalized using 3-(aminopropyl) triethoxysilane to improve adhesion and increase the interaction between epoxy and nanoparticles. Similarly, h-B4C nanoparticles were functionalized by using 3-(glycidyloxypropyl) trimethoxysilane. New structural nano adhesives were produced by reinforcing the functionalized nanoparticles into epoxy at different proportions (0.5 wt.%, 1.0 wt.%, 2 wt.%, 3.0 wt.%, 4.0 wt.%, and 5.0 wt.%). Two different epoxies with different viscosity values (MGS-LR285 and Araldite 2011) were used as adhesives, and aluminum alloy (AA2024-T3) was chosen as an adherend. Tensile test was carried out to determine the failure load of the adhesive joints, and the fracture surface morphology was examined after the test Additionally, Scanning electron microscopy and energy dispersion X-ray spectroscopy (SEM-EDS) analysis was performed to observe the distribution of boron nanoparticles in the adhesives. The experimental results showed that the reinforcement of hexagonal boron nitride and boron carbide nanoparticles to the adhesives increased the joint strength substantially depending on the reinforcement ratio and viscosity of the adhesives. The maximum increase in failure loads was achieved by adding 1 wt.% functionalized boron nitride to high viscosity Araldite 2011 adhesive and 2 wt.% to low viscosity MGS-LR285 adhesive, and the ratio of increase in failure loads is 31% and 63%, respectively. Moreover, by adding 2 wt.% functionalized boron carbide nanoparticles to the Araldite 2011 and MGS-LR285 adhesives, the strength of the joints increased by about 27% and 70%, respectively.

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Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

Cited by 14 publications

References 45 publications

Enhanced Shear Performance of Hybrid Glass Fiber–Epoxy Laminates Modified with Boron Nitride Nanotubes

Enhanced Shear Performance of Hybrid Glass Fiber–Epoxy Laminates Modified with Boron Nitride Nanotubes

Investigation of Mechanical and Tribological Properties of Particle Reinforced Composite Plates

Mechanical properties of aluminum bonded joints reinforced with functionalized boron nitride and boron carbide nanoparticles

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