Effect of a carbon nanotube coating on friction and impact performance of Kevlar

LaBarre, E. D.; Calderón‐Colón, Xiomara; Morris, Melanie L.; Tiffany, Jason E.; Wetzel, Eric D.; Merkle, Andrew C.; Trexler, Morgana M.

doi:10.1007/s10853-015-9088-8

Cited by 47 publications

(19 citation statements)

References 26 publications

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“…The mobility and friction between fabric yarns during impact is a primary energy dissipation mechanism, as it directly correlates to the fiber–fiber interfacial properties of the fabric. Recently, many fiber surface modification techniques, such as lubrication, coatings, and interphase design, have been proposed to improve impact response through increased interyarn friction. Dischler reported superior distribution of ballistic energy of aramid fabrics with the interyarn friction improving by a 2 µm pyrrole thick coating applied to aramid fibers .…”

Section: Introductionmentioning

confidence: 99%

“…Obradović et al demonstrated improved ballistic performance in aramid composites through the addition of silica nanoparticles to its surface . Labarre et al also showed a 230% increase in yarn pullout peak load by grafting multiwall carbon nanotubes onto the surface of aramid fibers . However, the grafting methods used, such as chemical vapor deposition (CVD), required high operating temperatures that are incompatible with polymer fibers.…”

Section: Introductionmentioning

confidence: 99%

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Improved Interyarn Friction, Impact Response, and Stab Resistance of Surface Fibrilized Aramid Fabric

Nasser

Steinke

Groo

et al. 2019

Adv Materials Inter

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Improvement of the ballistic performance of aramid fabric is an important topic in the study of soft body armors, especially with their increasing use in such applications over the past decades. To enhance and tailor the performance of fabrics, having control over one of its primary energy absorption mechanisms, interyarn friction, is required. Here, a recently reported surface fibrilization method is exploited and optimized to improve interyarn friction in aramid fabrics. Through tow pullout testing of fibrilized fabrics, the fibrilization treatment is shown to provide up to seven times higher pullout energy and six times higher peak load. To correlate the effects of the treatment on the ballistic response, impact tests are conducted on treated fabric targets using a gas gun setup. The fibrilized fabrics displayed a 10 m s‐1 increase in V50 velocity, compared to that of untreated fabrics, while retaining its original flexibility and mechanical strength. Similarly, the fibrilization treatment also resulted in 230% improvement in depth of penetration when dynamically stabbed using a spike impactor. The results demonstrate the potential of the proposed surface fibrilization treatment as a fast and cost‐effective technique to improve the ballistic and stab performance of aramid‐based soft body armors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved Interyarn Friction, Impact Response, and Stab Resistance of Surface Fibrilized Aramid Fabric

Nasser

Steinke

Groo

et al. 2019

Adv Materials Inter

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“…Düzcükoğlu et al [15] 148 Friction 5(2): 147-154 (2017) | https://mc03.manuscriptcentral.com/friction and Cui et al [16] investigated the tribological behavior of multiwall carbon nanotube (MWCNT)modified epoxy resin under dry sliding conditions and concluded that nanoparticle modification resulted in enhanced wear resistance and reduced friction coefficient and working temperature under dry conditions. LaBarre et al [17] evaluated the influence of MWCNTs on the impact performance and contributing constituent properties of Kevlar. The results suggested that MWCNT treatment has the potential to improve the ballistic limit of fabrics through increased interfilament and inter-yarn friction without compromising fiber strength or adding significant mass.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotubes on friction and wear of a piston ring and cylinder liner system under dry and lubricated conditions

Zhang

Liu

et al. 2016

Friction

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This study involves the application of carbon nanotubes (CNTs) to a piston ring and cylinder liner system in order to investigate their effect on friction and wear under dry and lubricated conditions. Carbon nanotubes were used as a solid lubricant and lubricant additive in dry and lubricated conditions, respectively. Simulation and measurement of friction and wear were conducted using a reciprocating tribometer. Surface analysis was performed using a scanning electron microscope and an energy dispersive spectrometer. The results indicate that carbon nanotubes can considerably improve the tribological performance of a piston ring and cylinder liner system under dry sliding conditions, whereas improvement under lubricated conditions is not obvious. Under dry friction, the effective time of the CNTs is limited and the friction coefficient decreases with an increase in CNT content. Furthermore, the dominant wear mechanism during dry friction is adhesive.

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“…A structure-property relationship of twisted fiber yarn on the basis of Krenchel orientation efficiency factor was established, which was validated by numerous experimental data. Polytetrafluoroethylene (PTFE) is a well-known frictional material and Kevlar® yarn is widely used as an outer fiber in fabric composites [12,13]. Deteresa et al [14] studied the compressive and torsional behaviour of Kevlar 49 fibers and found that twisting to larger torsional strains induced a further split of longitudinally-oriented fibers in the yarn.…”

Section: Introductionmentioning

confidence: 99%

Effects of Kevlar® 29 yarn twist on tensile and tribological properties of self-lubricating fabric liner

Fan

Gao

et al. 2016

Journal of Industrial Textiles

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Yarn twist in textile technology is an important characteristic since it considerably affects the properties of knitted or woven fabrics. Many researchers have investigated the effect of staple-spun yarn twist on the properties yarn and fabric. However, the effects of twist level of Kevlar® 29 (K29) filament yarn on the properties of yarn and its resin-impregnated self-lubricating fabric liner are not fully known yet. In this study, we have investigated the effects of K29 twist level on the tensile and tribological properties of the fabric liner (K29/PTFE fabric-resin composite). Two unexpected findings about the effect of yarn twist have been observed, namely 1) asynchronous twist effect on the yarn's and the liner's tensile strength and 2) dissimilar yarn twist effect on the liner's performance. These findings are mainly attributed to the synergic contributions of the yarn twist and strength and the interaction of the resin with the yarn orientation in the woven fabric structure of the liner.

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Effect of a carbon nanotube coating on friction and impact performance of Kevlar

Cited by 47 publications

References 26 publications

Improved Interyarn Friction, Impact Response, and Stab Resistance of Surface Fibrilized Aramid Fabric

Improved Interyarn Friction, Impact Response, and Stab Resistance of Surface Fibrilized Aramid Fabric

Effect of carbon nanotubes on friction and wear of a piston ring and cylinder liner system under dry and lubricated conditions

Effects of Kevlar® 29 yarn twist on tensile and tribological properties of self-lubricating fabric liner

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