Tribological behaviors of carbon series additions reinforced <scp>CF/PTFE</scp> composites at high speed

Ye, Pengpeng; Wu, Jian; Mu, Liwen; He, Dafang; Feng, Xin; Lü, Xiaohua

doi:10.1002/app.43236

Cited by 21 publications

(10 citation statements)

References 43 publications

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“…The tribological properties of PTFE matrix will be affected severely. 29 Thermal conductivity of PTFE, GP and A-GP at 200 ℃ was tested to be 0.215 W/mK, 0.225 W/mK and 0.229 W/mK, respectively. Owing to the addition of graphene and amino-graphene, the thermal conductivity was improved by 4% and 6%.…”

Section: Discussionmentioning

confidence: 99%

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Wang

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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Graphene was successfully modified by amino-functionalization process. The Fourier transform-infrared spectroscopy, Raman spectroscopy, and X-ray diffractometer were used to characterize the amino-functionalization result. The transmission electron microscopy was used to visualize the morphology of graphene and fractured surface of its resulting composite. The tribological behaviors of amino functionalized graphene reinforced polytetrafluoroethylene composite were evaluated by using a face-to-face contact mode under dry sliding/water lubricated condition. The worn surface was characterized by using a scanning electronic microscope equipped with an energy dispersive spectroscopy in order to find the reasons for the better tribological behaviors. The anti-friction and anti-wear mechanisms of amino functionalized graphene reinforced polytetrafluoroethylene composite were elucidated based on the experimental results. In all, this work is hoped to be helpful in designing and researching a new industrial material which can be used for water lubricated conditions in new-energy-vehicle fields.

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Section: Discussionmentioning

confidence: 99%

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Wang

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…However, the friction coefficient and wear rate both decrease at 0.5 m/s, which should be attributed to that the very fast sliding speed can promote the graphitized carbon materials with good hexagonal planes to be more easily cleaved into sheets to form good lubricating films on the contact surfaces (Fig. f) . As a result, the friction force between the contact surfaces decreases, meanwhile, the wear degree of the composite protected by the covered films also reduces.…”

Section: Resultsmentioning

confidence: 97%

An investigation on the mechanical and tribological properties of carbon fiber/polyimide composites at elevated temperatures

et al. 2017

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Carbon fiber reinforced thermoplastic polyimide composites were prepared, and the mechanical properties and tribological behaviors at various sliding conditions were systematically investigated. The results showed that the incorporation of carbon fiber not only improves the flexural and tensile properties of polyimide but also greatly promotes the dynamic mechanical properties. Meanwhile, the introduction of carbon fiber greatly enhances the antifriction performance and wear resistance of polyimide at elevated temperatures. Notably, at high temperatures of 180 and 260°C, the composite containing 20vol% carbon fiber exhibits the lowest friction coefficients of 0.054 and 0.1 respectively, accompanied with the lowest wear rates. Moreover, the influence of applied load and sliding speed was also investigated at various temperatures. Scanning electron microscope (SEM) and optical analysis indicate that some lubricating films can be formed on the contact surfaces at high temperatures due to the softening of contact surface and the graphitization of carbon fiber, and the wear mechanism is dominant by adhesive wear. POLYM. COMPOS., 39:E869–E882, 2018. © 2017 Society of Plastics Engineers

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“…These observations indicate that the proper addition of CFs facilitates a uniform transfer film. The milled CFs can improve thermal conductivity of fabric composites and dissipate the friction heat generated during the sliding test, thus minimizing the negative effect of the friction heat on the transfer film . Furthermore, self‐lubricating effect of CF is beneficial for keeping integrated transfer film …”

Section: Resultsmentioning

confidence: 99%

Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

Sun

Yang

et al. 2018

J of Applied Polymer Sci

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As self‐lubricating bearing liner materials, tribological properties of milled pitch‐based carbon fibers (CFs) modified polytetrafluoroethylene (PTFE)/Kevlar fabric composites were investigated, and the microscopic morphology of worn surface was studied. The results show that the appropriate incorporation of CFs can obviously reduce the wear rate of the fabric composite with almost unchanging friction coefficient. The wear rates of 5 wt % CF‐filled PTFE/Kevlar fabric composites are decreased by 30% and 48% for two kinds of composites made with fibers from different producers compared with unfilled fabric composites. Scanning electron microscopy observations show that the appropriate incorporation of CFs obviously improves the interfacial bonding and reduces pull‐out and fracture of Kevlar fiber. Meanwhile, the introduction of CFs at proper fraction is helpful to form smooth and continuous transfer film on the surface of metal counterpart. The improving mechanism of the CF is attributed to increasing mechanical strength, thermal conductivity and self‐lubricating effects. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46269.

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Tribological behaviors of carbon series additions reinforced CF/PTFE composites at high speed

Cited by 21 publications

References 43 publications

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

An investigation on the mechanical and tribological properties of carbon fiber/polyimide composites at elevated temperatures

Enhanced tribological performance of hybrid polytetrafluoroethylene/Kevlar fabric composite filled with milled pitch‐based carbon fibers

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