A comparative study on enhancement of mechanical and tribological properties of nitrile rubber composites reinforced by different functionalized graphene sheets: Molecular dynamics simulations

Cui, Jianzheng; Zhao, Jing; Wang, Shijie; Li, Yun Long

doi:10.1002/pc.25819

Cited by 41 publications

(13 citation statements)

References 69 publications

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“…25 A strong correlation was observed between the amount of GrF-OH fillers added into the HGrF/Nr nanocomposites and the COF, specific wear rate, and temperature. 17,24 The wear rate decreased from approximately 7.21 × 10 −4 to below 4.58 × 10 −4 mm 3 /Nm due to the filler increase. It was determined that the average COF of HGrF/Nr nanocomposites changed with the addition of GrF-OH to the mixture; this value decreased by approximately 10% at the 4 phr filler ratio.…”

Section: Mechanical Properties Of Rubber-based Hybrid Nanocomposites ...mentioning

confidence: 97%

“…Cui et al 17 investigated the mechanical and tribological properties of graphene filled NBR composites functionalized with OH, COOH, and COOCH 3 functional groups by molecular dynamic simulations. They found that the hydrogen bond formed between the COOH functionalized graphene particles and the NBR matrix and the strong van der Waals interactions showed the best effect in improving the mechanical and tribological properties.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Kasım¹,

Onat

Engin³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The use of unfilled pure elastomer parts is limited in friction wheels, roller tires, sealing elements, and dynamic friction air suspension applications requiring high wear resistance. This study investigates the mechanical and tribological properties of new nanocomposites obtained by adding hydroxyl-functionalized graphene nanoplatelets at 1, 4, and 8 phr (parts per hundred rubber) ratios to the carbon black filled main rubber compound of sealing elements designed for axle hubs. The synergistic effect of nanofiller materials on the wear behavior of nanocomposites was tested with a block-on-ring wear tester under dry sliding conditions at 1000 rpm and 15 N normal load conditions. The worn surfaces were examined with scanning electron microscopy and circularly polarized light–differential interference contrast topology microscopy to reveal the wear mechanism. The addition of functionalized graphene nanoplatelets to the nanocomposite compound caused significant changes in tensile strength and elongation values by changing the cross-link density. The wear rate of nanocomposites prepared with graphene nanoplatelets at 1, 4, and 8 phr ratios was 11.15%, 25.24%, and 36.54% lower than the main rubber mixture used, respectively. While the hysteresis loss decreased by 14.83% at 1 phr, this value increased in other filler ratios. Significant differences in temperature change occurred as the amount of filler increased. After the test, the temperature values of nanocomposites with 1 and 4 phr filler ratios were between about 85–89°C, while it was measured as 99°C in nanocomposites with 8 phr filler ratios. It has been observed that the homogeneous distribution of two-dimensional carbon allotropes such as graphene nanoplatelet added to the rubber matrix at the optimum rate will improve tribological properties such as better surface lubrication, low wear rate, and low friction coefficient.

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Section: Mechanical Properties Of Rubber-based Hybrid Nanocomposites ...mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Kasım¹,

Onat

Engin³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…One such modification is the preparation of rubber-based composites. Rubber composites are extensively utilized in industrial applications as they offer outstanding material properties like chemical, wear, and high-temperature resistance [8]. Different fillers have been introduced to rubber materials to build the rubber composites such as silica, cellulose, chitin, starch, carbon black, etc.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of mechanical properties of graphene reinforced natural rubber composites

Hussain

Sharma

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Molecular dynamics simulation has been performed to compare the properties of graphene (GE) sheet reinforced natural rubber (NR) nanocomposites with pristine natural rubber. Three different molecular level models have been prepared, one for pristine natural rubber and the other two for 3.6% and 7.8% volume fraction of graphene in rubber nanocomposite. The Constant strain minimization approach is used to predict the mechanical properties of the developed molecular models. It has been observed that there is a significant increment of up to 83.37% in Young’s modulus, 40.06% in bulk modulus, and 23.24% in shear modulus by the addition of 7.8% volume fraction of graphene in NR nanocomposite, respectively.

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“…MD is an effective method to deal with the problem without these unnecessary assumptions [ 32 , 33 , 34 ]. It has been widely applied to investigate the interfacial properties between polymer and nanocarbon materials, such as single-layer graphene [ 35 ], double-layered graphene [ 36 ], functionalized graphene [ 37 ], flattened carbon nanotubes [ 38 ], functionalized carbon nanotubes [ 39 ], multi-walled carbon nanotubes [ 40 ], CNT bundles [ 41 ], multi-walled carbon nanotubes [ 42 ], and single-layer diamonds [ 43 ]. The results prove that MD can simulate the interfacial properties with high precision and analyze the underlying toughening mechanism.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation of Coiled Carbon Nanotube Pull-Out from Matrix

Huang

Zhou

2022

IJMS

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The interaction between coiled carbon nanotubes (CCNT) and the polymer matrix is important in the mechanical, thermal, and electrical properties of the CCNT reinforced nanocomposite. In this study, molecular dynamics (MD) simulations were performed to study the interfacial characteristics of polymer nanocomposites (PNCs). Furthermore, the influence of the geometries of the CCNTs on the load transfer mechanism is evaluated. Pullout simulations considering different geometries of CCNTs are carried out to examine the tensile force and the interfacial shear stress (ISS). The results reveal that the maximal tensile force is reduced by increasing CCNT inner diameters, increasing the helix angles, and decreasing nanotube diameters. The distance between CCNTs and the polymer matrix is varied, and the interfacial distance favors greater ISS. Decreasing the inner diameter of the CCNT, the helix angle, and the tube diameter increases the ISS. The enhancement mechanism of CCNT/polymer composites has also been illustrated. Due to a lack of experimental results, only numerical results are given. The present study helps to understand the interfacial adhesion behavior between the polymer matrix and CCNTs and is expected to contribute to the development of CCNT reinforced polymer composites.

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A comparative study on enhancement of mechanical and tribological properties of nitrile rubber composites reinforced by different functionalized graphene sheets: Molecular dynamics simulations

Cited by 41 publications

References 69 publications

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

Molecular dynamics simulation of mechanical properties of graphene reinforced natural rubber composites

Molecular Dynamics Simulation of Coiled Carbon Nanotube Pull-Out from Matrix

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