Reinforcement of epoxy resin composites with fluorinated carbon nanotubes

Kharitonov, A. P.; Симбирцева, Г. В.; Ткачев, А. Г.; Blohin, A.N.; Dyachkova, T. P.; Maksimkin, Aleksey V.; Chukov, Dilyus I.

doi:10.1016/j.compscitech.2014.12.002

Cited by 44 publications

(19 citation statements)

References 37 publications

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“…MWCNTs were treated by direct fluorination in order to increase the surface polarity and decrease agglomeration. MWCNT fluorination was carried out in a closed reaction vessel at a fluorine pressure of 0.7–0.8 bar at 150 °C over 2 h [ 18 , 19 ]. Fluorinated MWCNTs (FMWCNTs) were mixed with UHMWPE in a high-energy planetary ball mill APF-3 in 900-mL steel vials for 45 min.…”

Section: Methodsmentioning

confidence: 99%

Bulk Oriented UHMWPE/FMWCNT Films for Tribological Applications

et al. 2017

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Bulk oriented films based on ultrahigh molecular weight polyethylene (UHMWPE) with a drawing ratio of 35 were prepared by using a low solvent concentration. Bulk oriented films were filled with fluorinated multi-walled carbon nanotubes (FMWCNTs). The structure of bulk oriented films on UHMWPE, which were manufactured at different stages of orientation, was investigated by scanning electron microscope (SEM) and differential scanning calorimetry (DSC). The addition of FMWCNTs at a concentration of 0.05 wt % in bulk oriented UHMWPE films led to an increase in the tensile strength by 10% (up to 1020 ± 23 MPa) compared to unfilled oriented films. However, the addition of FMWCNTs at a concentration of more than 0.5 wt % led to a decrease in tensile strength due to excessive accumulation of nanotubes and hindering of self-diffusion of UHMWPE macromolecules. The multiple increase in tensile strength, doubling the hardness, the formation of fibrillar structure, and the presence of carbon nanotubes led to a significant increase in tribological properties in bulk oriented films. Bulk oriented UHMWPE/1% FMWCNT films can be operated at a maximum contact pressure that is 18 times higher and exhibit a specific wear rate more than an order of magnitude and less than the traditional UHMWPE of isotropic structure. Bulk oriented UHMWPE/1% FMWCNT films have an extremely low dry coefficient of friction (COF) of 0.075 at a contact pressure of 31 MPa. The developed bulk oriented films can be used for manufacturing frictional surfaces for sliding bearings, or for acetabular cups for knee and hip endoprostheses.

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Section: Methodsmentioning

confidence: 99%

Bulk Oriented UHMWPE/FMWCNT Films for Tribological Applications

et al. 2017

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“…As a rigid and water-insoluble polymer, epoxy is a promising material in the fabrication of CNT-based composite electrodes because it can be facilely produced by in situ polycondensation [19]. Various CNT-epoxy composites have been prepared by polycondensation [20][21][22]. Because the content of CNTs in these composites was less than 10% w/w, it was not suitable for the fabrication of detection electrode owing to its low electric conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…Because the content of CNTs in these composites was less than 10% w/w, it was not suitable for the fabrication of detection electrode owing to its low electric conductivity. Previous investigations mainly focused on its physical prosperities [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Determination of arbutin and bergenin in Bergeniae Rhizoma by capillary electrophoresis with a carbon nanotube-epoxy composite electrode

Zhang¹,

Zhang²,

Chen³

2015

Journal of Pharmaceutical and Biomedical Analysis

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“…To improve the GNP interaction, various functionalization methods can be used [2]. By analogy with carbon nanotubes [3], it should be expected that the fluorination of GNPs must lead to an increase in their reinforcing effect when employed as a component of epoxy composites.…”

Section: Introductionmentioning

confidence: 99%

Composite materials using fluorinated graphene nanoplatelets

Blokhin¹,

Dyachkova²,

Sukhorukov³

et al. 2018

Nanosystems: Phys. Chem. Math.

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The changes occurring on the surface of graphene nanoplatelets (GNPs) during treatment with gaseous fluorine are shown. According to Raman and IR spectroscopy, C-F covalent bonds are formed. As the fluorination temperature increases, the destructive changes in the GNPs become more noticeable, as evidenced by the results of X-ray diffraction analysis and the specific surface area of the samples. The presence of fluorine-containing functional groups contributes to better dispersion of the GNPs in the epoxy matrix and to an increase in their strengthening effect. The epoxy composite containing 0.1 wt% of the GNPs treated with fluorine at 450 • C presents the maximum strength characteristics: in comparison with the unmodified material, the tensile stress increases by more than 2 times, the tensile modulus-by 20 %, the breaking stress at bending-by 80 %, and the modulus of elasticity at bending-by 60 %.

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Reinforcement of epoxy resin composites with fluorinated carbon nanotubes

Cited by 44 publications

References 37 publications

Bulk Oriented UHMWPE/FMWCNT Films for Tribological Applications

Bulk Oriented UHMWPE/FMWCNT Films for Tribological Applications

Determination of arbutin and bergenin in Bergeniae Rhizoma by capillary electrophoresis with a carbon nanotube-epoxy composite electrode

Composite materials using fluorinated graphene nanoplatelets

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