Two-dimensional clay nanosheet-reinforced polytetrafluoroethylene composites and their mechanical/tribological studies

Masalehdan, Tahereh; Eskandarzade, Mehdi; Tutunchi, Abolfazl; Kim, Byungki; Questa, Harry; Mohammadpour, Mahdi; Asl, Mehdi Shahedi

doi:10.1016/j.mtcomm.2021.102026

Cited by 7 publications

(4 citation statements)

References 53 publications

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“…A similar result consisting in the increase of the Young's modulus has been observed in Nafion films reinforced with up to 20% of montmorillonite clay [28]. Generally, as observed in literature, the introduction of clay nano-sheet in a polymer matrix enhances the mechanical properties of the polymer/ clay composite [29].…”

Section: Dynamic Mechanical Analysissupporting

confidence: 85%

Conductivity and dielectric relaxation of cross-linked PVA/montmorillonite electrolyte films

Mbarek

Fattoum

Sendi

et al. 2021

Ionics

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The objective of this work is to prepare and characterize polyvinyl alcohol/montmorillonite clay (PVA/MMT) composite films at various clay amounts. The PVA is cross-linked with oxalic acid at the cross-linking degree of 20%. The composite films are characterized by X-ray diffraction, water uptake and swelling measurements, Ac electrical conductivity and dielectric measurements, surface morphology study by scanning electron microscopy, thermal gravimetric analyses and dynamic mechanical analyses. X-ray diffraction study shows the presence of characteristic peaks of PVA with a decrease of the crystalline degree by addition of clay. The morphological study shows the presence of the montmorillonite phase in good dispersion in the PVA matrix. The water uptake and swelling behavior show a dependence on the clay percentage. The presence of clay enhances the thermal stability of the composite and increases the Young modulus and ductility of the films. The Ac conductivity between 100 Hz and 1 MHz shows response well fitted by the universal Jonsher law compatibly with charge transport in disordered materials. The DC conductivity shows an Arrhenius response with activation energy values compatible with ionic transport. The use of the dielectric permittivity and the modulus formalisms show the presence of two relaxation processes.

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Section: Dynamic Mechanical Analysissupporting

confidence: 85%

Conductivity and dielectric relaxation of cross-linked PVA/montmorillonite electrolyte films

Mbarek

Fattoum

Sendi

et al. 2021

Ionics

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“…Meanwhile, the weather resistance of the products when facing complex environments has yet to be strengthened. Therefore, how to prepare superhydrophobic materials with high weathering resistance in large quantities, quickly and at low cost is still a worthy research problem [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of superhydrophobic polytetrafluoroethylene materials and micro/nanoindentation

Zhou,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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A method for preparing superhydrophobic polytetrafluoroethylene materials by micro- and nanoimprinting is discussed. Surfaces with superhydrophobic properties were prepared by designing and imprinting micro- and nano-structures on polytetrafluoroethylene materials. The experiments on weather resistance and durability revealed that the microstructure of screens of different mesh sizes was processed onto the surface of PTFE material by micro-nano thermal imprinting to make it hydrophobic and oleophobic, and retained the original excellent properties of corrosion resistance and low surface attachment, etc. The material processed by the new method has a wide range of application prospects in various fields.

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“…Nevertheless, due to the increasing requirement for wear and tribology performances, traditional polymers cannot meet the demands of new generation devices [6]. Therefore, extensive researches were committed to improving the tribology performance via carbonaceous nanomaterial-reinforced polymeric composites with high wear resistance [7]. However, there are still several problems remaining.…”

Section: Introductionmentioning

confidence: 99%

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

Chen¹,

Li²,

Li³

et al. 2022

Coatings

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Despite wide applications in mechanical transmission components, sparked with extraordinary wear resistance, polymeric composites face the challenges of reinforcement agglomeration. In this work, deformation-driven processing was proposed to prepare carbon nanotube (CNTs)-reinforced poly-ether-ether-ketone (PEEK) matrix composites with enhancement in wear resistance. Severe plastic deformation contributed to the homogeneous dispersion of the reinforcements without undesirable agglomeration. Low frictional heat input ensured the structural integrity of CNTs. The coefficient of friction and wear rate of 3.0 wt.% CNTs/PEEK were, respectively, 7.32% and 6.71% lower than those of pure PEEK. This strategy provides a high-efficiency approach to preparing high wear-resistance polymeric composites, attributed to its self-heating, low-cost, and high-performance characteristics.

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Two-dimensional clay nanosheet-reinforced polytetrafluoroethylene composites and their mechanical/tribological studies

Cited by 7 publications

References 53 publications

Conductivity and dielectric relaxation of cross-linked PVA/montmorillonite electrolyte films

Conductivity and dielectric relaxation of cross-linked PVA/montmorillonite electrolyte films

Preparation and application of superhydrophobic polytetrafluoroethylene materials and micro/nanoindentation

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

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