Deformation-Driven Processing of CNTs/PEEK Composites towards Wear and Tribology Applications

Chen, Yan; Li, Chong; Li, Zenglou; Yao, Xin‐Kan; Hao, Wenbo; Xing, Shaozhen; Xie, Yuming; Meng, Xianghai; Wan, Long; Huang, Yu Dong

doi:10.3390/coatings12070983

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…For example, PTFE, ultra-high molecular weight polyethylene (UHMWPE) and polyurethane (PU) have excellent self-lubricating properties, but their mechanical properties and heat resistance are relatively poor. Polyimide (PI), poly (ether-ether-ketone) (PEEK) and epoxy resin (EP) have better mechanical and thermal properties, but their COF are relatively high (Maksimkin et al, 2017;Lim et al, 2018;Arif et al, 2020;Cui et al, 2022;Ding et al, 2022). Therefore, these problems limit the universality of polymer applications in the actual mechanical equipment.…”

Section: Introductionmentioning

confidence: 99%

Tribological properties of carbon nanotube/polymer composites:A mini-review

Miao

Chen²,

Li³

et al. 2023

Front. Mater.

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With the development of modern industry, the requirements for mechanical equipment are increasingly stringent, and increasing attention has been paid to reducing wear or lubrication in the movement of mechanical structural parts. Polymers are widely used in the field of mechanical structural parts due to their high processing performance and comprehensive performance. However, the relatively weak mechanical and tribological properties of polymers limit their further application in mechanical equipment lubrication. Incorporation of fillers is a common method to improve the friction properties of polymers. Among various fillers, carbon nanotubes (CNTs) are considered the ideal fillers to significantly improve the tribological properties of polymers. Therefore, this paper reviews the tribological properties of carbon nanotube modified polymer materials. The tribological wear mechanism of polymers and the influence of friction-reducing fillers on the tribological properties of polymers and the related lubrication mechanism explanation are outlined, and the factors influencing the tribological properties of composites by carbon nanotubes and the related lubrication mechanism explanation are analyzed. The presented review will be beneficial for the production of high-performance polymer nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Tribological properties of carbon nanotube/polymer composites:A mini-review

Miao

Chen²,

Li³

et al. 2023

Front. Mater.

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Multi-scale Friction Simulation and Experimental Verification of Carbon Nanotube-Reinforced PTFE Composites

Liang,

Shuai,

Yang

et al. 2023

Tribol Lett

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The synergistic analysis of friction properties of carbon nanotube (CNT)-reinforced polymers at the nanoscale and macroscale can help to obtain the intrinsic mechanism of carbon nanotubes to reduce the friction coefficient of polymers, which is important to guide the modification of polymer friction properties. However, the huge gap in spatial scales makes it difficult for molecular dynamics simulations at the nanoscale to predict the friction coefficient of virtual contact interfaces, and conducting a large number of macroscopic experiments to obtain natural frictional laws could be more efficient. This study proposes a multi-scale model to investigate the frictional behavior of copper (Cu)-CNT/polytetrafluoroethylene (PTFE). By using the micromechanics Mori-Tanaka homogenization method as a bridge, the nanoscale simulations of the CNT/PTFE elasticity and frictional behaviour and the macroscopic finite element simulation of the Cu ring-CNT/PTFE block contact are coupled, thus integrating the nanoscale frictional laws of Cu-CNT/PTFE obtained from molecular dynamics simulations into the actual contact interface. The results of multi-scale friction simulations show that the filling of CNTs can effectively improve the elastic and frictional properties of the PTFE matrix, and the degree of improvement is related to the orientation and mass fraction of the CNTs. Under a normal load of 0.5 MPa and a rotating speed of 30 rpm, the friction coefficient continuously decreases (from 0.198 to 0.156) with increasing CNTs mass fraction (0%, 1.25%, 2.5%, 5%). The simulation results were verified by copper ring-CNT/PTFE block friction experiments.

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