Unique synergistic effects of graphene oxide and carbon nanotube hybrids on the tribological properties of polyimide nanocomposites

Min, Chunying; Liu, Dengdeng; Shen, Chen; Zhang, Qiaqia; Song, Haojie; Li, Songjun; Shen, Xiaojuan; Zhu, Maiyong; Zhang, Kan

doi:10.1016/j.triboint.2017.09.006

Cited by 152 publications

(65 citation statements)

References 33 publications

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“…The prepared FGO was characterized by FTIR spectra to study the functional groups of FGO samples. FTIR spectra of FGO in Figure A show that the characteristic absorption peaks located at 1620 and 3415 cm −1 are corresponding to CC band and OH groups, respectively, which is consistent with that of rGO . Additionally, compared with rGO, a new peak appeared at 1070 cm −1 in FGO, which is indexed to the stretching vibration of the CF bond .…”

Section: Resultssupporting

confidence: 57%

High mechanical and tribological performance of polyimide nanocomposite reinforced by fluorinated graphene oxide

Min

Liang

et al. 2019

Polymer Composites

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Novel polyimide/fluorinated graphene oxide (PI/FGO) nanocomposites with outstanding mechanical, thermal, and tribological properties were obtained using FGO nanosheets which were successfully fabricated by simple hydrothermal reaction. FGO exhibited distinguished interface adhesion with PI matrix due to covalent bonds, resulting improved mechanical and wear resistance of PI/FGO nanocomposites. Wherein, PI/FGO‐0.5 nanocomposite demonstrated conspicuous tribological performance accompanied with 33.1% decrease of friction coefficient and 80.8% reduction of wear rate compared with pure PI under dry friction. Notably, PI/FGO nanocomposites manifested better wear resistance under seawater than that under dry friction, illustrating its great potentiality as high wear‐resistant material suitable for ocean environment.

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Section: Resultssupporting

confidence: 57%

High mechanical and tribological performance of polyimide nanocomposite reinforced by fluorinated graphene oxide

Min

Liang

et al. 2019

Polymer Composites

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“…The total content of all the fillers was controlled at 0.4 vol%, and the CNT: GNP ratio of the hybrid fillers was 5:2. According to a series of researches in a low proportion of carbon nano-fillers epoxy, 0.4 vol% is an optimal ratio for several properties and the CNT: GNP ratio of 5:2 always performs an obvious synergistic effect [19]. These ratios can serve as a representative for further researches in the future.…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

Calculations of factors that affect thermal conductivity in epoxy composites with hybrid carbon nanotube and graphene nano platelet

Wang

Xiao

Fan

et al. 2020

Mater. Res. Express

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Carbon Nanotubes (CNTs) and Graphene Nano Platelets (GNPs) had been used to enhance the thermal conductivity of the epoxy composites and show a synergistic effect. Complex service conditions also put forward the requirements for the structural design of the composites to get better performance. Researches should be done to further understand the mechanism of enhancement in composites and find ways to assist the design and optimization of the structure. In this research, epoxy composites with CNTs, GNPs and hybrid CNTs-GNPs (5:2) were prepared, whose total content of fillers was kept constant at 0.4 vol%. Test of specific surface area shew the hybrid fillers had less aggregation and the composites with hybrid fillers had the highest thermal conductivity. Observing the microstructure of the composites, CNTs were absorbed on the surface of GNPs, forming a crossnetwork which could improve aggregation and provide channels for the heat. A series of finite element models were established using scripts to find the factors that affect the forming of network and heat flow. A parameter was created to reflect the distribution of the fillers: distance of non-network(DNN). Positions, orientations, ratios, shapes, and sizes are all factors. The effect of angles depends on the relative positions of the fillers. A proper bending degree of CNTs would have better enhancement. The vertical-structure network was created manually and heat flux on the network was shown: GNPs expanded the area of network for the acceptance and release of heat. CNTs provide efficient channels for the multidirectional heat flow. The combination of the geometry expanded the influence region of the network.

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“…Due to excellent thermal and outstanding mechanical properties, polyimides (PIs) and its composites have been widely used as tribo‐materials, sealing, and structure materials in the field of aerospace . Although PIs composites have enormous potentials in self‐lubrication materials, applications in LEO are still a challenge when it was exposed to the harsh space condition, especially under AO and thermal cycling .…”

Section: Introductionmentioning

confidence: 99%

Effect of atomic oxygen on corrosion and friction and wear behavior of polyimide composites

Duan

Song

et al. 2019

J of Applied Polymer Sci

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Thermosetting polyimide (TPI) composite with better wear resistance and lower friction was obtained with various functional fillers after a high-low temperature cycle test. Nevertheless, taking into consideration of harsh space condition, the friction and wear behavior of TPI composite were also explored after atomic oxygen (AO) irradiation. It reveals that TPI composite behaves excellent properties against AO mainly attributed to g-C 3 N 4 with more negative electronegativity N than carbon atom. Moreover, the mechanism of friction and wear demonstrated that degradation caused by AO led to TPI composite surface with special "carpet-like" morphology and this resulted into lubrication failure, especially when temperature was increased from 200 C to 350 C.

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Unique synergistic effects of graphene oxide and carbon nanotube hybrids on the tribological properties of polyimide nanocomposites

Cited by 152 publications

References 33 publications

High mechanical and tribological performance of polyimide nanocomposite reinforced by fluorinated graphene oxide

High mechanical and tribological performance of polyimide nanocomposite reinforced by fluorinated graphene oxide

Calculations of factors that affect thermal conductivity in epoxy composites with hybrid carbon nanotube and graphene nano platelet

Effect of atomic oxygen on corrosion and friction and wear behavior of polyimide composites

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