Hybrid carbon nanotube–carbon fiber composites with improved in-plane mechanical properties

Boroujeni, Ayoub Yari; Tehrani, Mehran; Nelson, Anthony J.; Al-Haik, Marwan

doi:10.1016/j.compositesb.2014.06.010

Cited by 94 publications

(42 citation statements)

References 33 publications

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“…The tensile modulus of elasticity is a property associated with the fiber as a whole; when damage is sustained to the core of the fiber both the tensile strength and tensile modulus are reduced. [30] The tensile modulus was almost identical for all samples indicating that the fiber core remained unaffected by the CNT growth conditions. Fiber strength variability can be characterized using the Weibull shape parameter (Weibull modulus, ).…”

Section: Tensile Properties Of (Cnt-grafted-)fibersmentioning

confidence: 69%

“…The most prevalent method to limit carbon fiber damage during the synthesis of CNT on carbon fiber substrates is the application of a barrier coating to the fiber surfaces, which limits catalyst contact with the fiber substrate. Common barrier coatings include silicon/silica [30][31][32][33][34][35][36], alumina [37][38][39] or pyrolytic carbon. [40][41][42] However, recently, we reported that the application of a modest potential difference minimized carbon fiber damage and improved the CNT coverage without the requirement for a barrier coating.…”

Section: Introductionmentioning

confidence: 99%

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Continuous carbon nanotube synthesis on charged carbon fibers

Anthony

Sui

Kellersztein

et al. 2018

Composites Part A: Applied Science and Manufacturing

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Carbon nanotube grafted carbon fibers (CNT-g-CFs) were prepared continuously, spool to spool, via thermal CVD. The application of an in-situ potential difference (300 V), between the fibers and a cylindrical graphite foil counter electrode, enhanced the growth, producing a uniform coverage of carbon nanotubes with diameter ca. 10 nm and length ca. 125 nm. Single fiber tensile tests show that this approach avoids the significant reduction of the underlying carbon fiber strengths, which is usually associated with CVD grafting processes. Single fiber fragmentation tests in epoxy, with in-situ video fragment detection, demonstrated that the CNT-g-CFs have the highest interfacial shear strength reported for such systems (101 ± 5 MPa), comparable to state-of-the-art sizing controls (103 ± 8 MPa).Single fiber pull-out data show similar trends. The short length of the grafted CNTs is particularly attractive for retaining the volume fraction of the primary fibers in composite applications.

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Section: Tensile Properties Of (Cnt-grafted-)fibersmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Continuous carbon nanotube synthesis on charged carbon fibers

Anthony

Sui

Kellersztein

et al. 2018

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

show abstract

“…Level of adhesion is one of the most important considerations while selecting polymer matrix for the CNT reinforcement [33,34]. Epoxy resins form strong bonds with almost all surfaces except a few nonpolar substrates which make them suitable for CNT dispersion with higher adhesion.…”

Section: Polymer Matrixmentioning

confidence: 99%

Investigating the mechanical properties of single walled carbon nanotube reinforced epoxy composite through finite element modelling

Zuberi

Esat

2015

Composites Part B: Engineering

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“…Moreover, the literature has shown that the fracture toughness, shear, thermal, flexural, and tensile properties of polymerbased composite materials improve considerably with a 0.1-5 wt.% loading of CNTs [6,7]. Because of the interfacial interactions, mainly in the interphase of superficially functionalized polymer/CNT composite, recently few investigations have focused on the preparation and design of hybrid fiber/CNT composites by developing CNTs over fibers [8,9]. The CNT coated fibers have potential to increase the thickness features of polymer-based composites and to harden the matrix/fiber interface [10,11].…”

Section: Introductionmentioning

confidence: 99%

Epoxy composites reinforced with multi-walled carbon nanotube/poly(ethylene glycol)methylether-coated aramid fiber

Kausar

Siddiq

2015

Journal of Polymer Engineering

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Abstract A novel type of aramid fibers coated with poly(ethylene glycol) methyl ether (PEGME)-modified multi-walled carbon nanotubes (MWCNTs) was designed using electrophoresis. Owing to the good interaction of MWCNT-PEGME with the matrix, the coated fibers were well dispersed in epoxy resin. Thin films of epoxy/aramid-MWCNT-PEGME were prepared by placing the modified aramid fibers in molds, and the epoxy resin was infused into them. 4,4′-Diaminodiphenylmethane was dissolved in epoxy before the resin was poured over the aramid fibers coated with MWCNT-PEGME. According to fracture surface studies, the modified fibers were completely miscible with the epoxy resin and the filler was dispersed well in the space between the aramid fibers. The tensile strength of neat resin was increased from 658 to 1198 MPa in 40 wt.% of fiber-loaded epoxy/aramid-MWCNT-PEGME 40 composite. The maximum flexural strength was also found to be higher for epoxy/aramid-MWCNT-PEGME 40 (1593 MPa). The glass transition temperature (Tg) was studied using differential scanning calorimetry, in the range of 164–173°C. The tensile strength, modulus, flexural strength, and Tg of epoxy/aramid fiber composites with unmodified fibers were found to be lower than those of epoxy/aramid-MWCNT-PEGME composites.

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Hybrid carbon nanotube–carbon fiber composites with improved in-plane mechanical properties

Cited by 94 publications

References 33 publications

Continuous carbon nanotube synthesis on charged carbon fibers

Continuous carbon nanotube synthesis on charged carbon fibers

Investigating the mechanical properties of single walled carbon nanotube reinforced epoxy composite through finite element modelling

Epoxy composites reinforced with multi-walled carbon nanotube/poly(ethylene glycol)methylether-coated aramid fiber

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