Wear performance and mechanical properties of MWCNT/HDPE nanocomposites for gearing applications

Dabees, Sameh; Tirth, Vineet; Mohamed, Alaa; Kamel, Bahaa M.

doi:10.1016/j.jmrt.2020.09.129

Cited by 40 publications

(18 citation statements)

References 38 publications

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“…High-loading content exhibits the highest improvement percentages of tensile strength and elastic modulus, with approximately 19.8% and 9.4% improvement, respectively. This shows that nanofillers contribute to enhancing the ductility and strain rate of HDPE matrices [ 36 , 40 ]. Table 2 outlines the mechanical features of HDPE nanocomposite samples compared with the pure sample.…”

Section: Resultsmentioning

confidence: 99%

“…This is a consequence of the good dispersion of the Al 2 O 3 NPs, which was attributed to improving the load carrying ability and matrix structure. Moreover, the HDPE/MWCNT nanocomposites were examined to identify the MWCNT impact on chain structure [ 40 ]. It can be demonstrated that wear performance and mechanical properties were enhanced, which may be due to the successful incorporation of MWCNT into the HDPE matrix.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Tribological Performance of HDPE Matrix Reinforced by Hybrid Gr/TiO2 NPs for Hip Joint Replacement

Nabhan

Sherif

Abou-Zeid

et al. 2023

JFB

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Hip joint collapse is a very common health problem. Many cases need a joint replacement, so nano-polymeric composites are an ideal alternative solution. Due to its mechanical properties and wear resistance, HDPE might be considered a suitable alternative to frictional materials. The current research focuses on using hybrid nanofiller TiO2 NPs and nano-graphene with various loading compositions to evaluate the best loading amount. The compressive strength, modules of elasticity, and hardness were examined via experiments. The COF and wear resistance were evaluated via a pin-on-disk tribometer. The worn surfaces were analyzed based on 3D topography and SEM images. The HDPE samples with various compositions of 0.5%, 1.0%, 1.5%, and 2.0 wt.% filling content of TiO2 NPs and Gr (with a ratio of 1:1) were analyzed. Results revealed that hybrid nanofiller with a composition of 1.5 wt.% exhibits superior mechanical properties compared to other filling compositions. Moreover, the COF and wear rate decreased by 27.5% and 36.3%, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical and Tribological Performance of HDPE Matrix Reinforced by Hybrid Gr/TiO2 NPs for Hip Joint Replacement

Nabhan

Sherif

Abou-Zeid

et al. 2023

JFB

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show abstract

“…This is also attributed to the good van der Waals interaction of MWCNT with PTFE, maximizing reinforcement effects of MWCNT, and subsequently increasing the load-carrying capacity [ 40 ]. Uniform distribution of MWCNT in high density polyethylene (HDPE) matrix also reduced wear loss by imparting resistance against plastic deformation during gear wear testing [ 41 ].…”

Section: Tribological Performance Of Polymer Nanocompositesmentioning

confidence: 99%

Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development

et al. 2021

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Polymer nanocomposites with enhanced performances are becoming a trend in the current research field, overcoming the limitations of bulk polymer and meeting the demands of market and society in tribological applications. Polytetrafluoroethylene, poly(ether ether ketone) and ultrahigh molecular weight polyethylene are the most popular polymers in recent research on tribology. Current work comprehensively reviews recent advancements of polymer nanocomposites in tribology. The influence of different types of nanofiller, such as carbon-based nanofiller, silicon-based nanofiller, metal oxide nanofiller and hybrid nanofiller, on the tribological performance of thermoplastic and thermoset nanocomposites is discussed. Since the tribological properties of polymer nanocomposites are not intrinsic but are dependent on sliding conditions, direct comparison between different types of nanofiller or the same nanofiller of different morphologies and structures is not feasible. Friction and wear rate are normalized to indicate relative improvement by different fillers. Emphasis is given to the effect of nanofiller content and surface modification of nanofillers on friction, wear resistance, wear mechanism and transfer film formation of its nanocomposites. Limitations from the previous works are addressed and future research on tribology of polymer nanocomposites is proposed.

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“…The incorporation of nanoparticles would significantly improve polymer strength and stiffness. [5][6][7][8] Nanofillers usually used as PA6 reinforcement in practice include TiO 2 , 9 MWCNTs, 10,11 clay nanocomposite , 11 nano-Al 2 O 3, 12 and graphene 13 because of the unrivaled spatial and bonding configuration of carbon nanotubes, which play a pivotal and efficient role as filler in polymer composites because of their high aspect ratio, outstanding tribological characteristics, mechanical strength, and high thermal conductivity. These reinforced nanomaterial composite materials synergistically integrate the characteristics of both fillers, nanomaterial, and pure polymer.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal, and flammability properties of polyamide-6 reinforced with a combination of carbon nanotubes and titanium dioxide for under-the-hood applications

Dabees

Osman

Kamel

2022

Journal of Thermoplastic Composite Materials

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The current study aims to explore the tensile fracture mechanism and thermo-mechanical efficiency of polyamide-6 (PA6) reinforced with titanium dioxide (TiO2) and multiwalled carbon nanotubes (MWCNTs). The uniform dispersion of the MWCNTs and appreciable interfacing between PA6, TiO2, and MWCNTs were revealed in the fractography figures. The crystallization temperature and degree of crystallinity have been enhanced by the addition of nanoparticles to the PA6 matrix. Young’s modulus, tensile strength, and Charpy impact strength improved proportionally concerning reinforcement content. The essential work of fracture (EWF) method was applied to evaluate the toughening and fracture behavior of PA6 hybrid systems. Considerable improvement (+60.6%) in the EWF of PA6–TiO2–MWCNT nanocomposites was observed at 4 wt.% CNT and 2 wt.% TiO2. Limiting oxygen index (LOI) findings demonstrate that a polymer with a combination containing titanium dioxide and multiwalled carbon nanotubes has a highly substantial retardant influence. As a result, the TiO2–CNT combination acts as a synergist filler, offering versatile PA6 composite products.

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Wear performance and mechanical properties of MWCNT/HDPE nanocomposites for gearing applications

Cited by 40 publications

References 38 publications

Mechanical and Tribological Performance of HDPE Matrix Reinforced by Hybrid Gr/TiO2 NPs for Hip Joint Replacement

Mechanical and Tribological Performance of HDPE Matrix Reinforced by Hybrid Gr/TiO2 NPs for Hip Joint Replacement

Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development

Mechanical, thermal, and flammability properties of polyamide-6 reinforced with a combination of carbon nanotubes and titanium dioxide for under-the-hood applications

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