Mechanical and tribological properties of epoxy matrix composites modified with microencapsulated mixture of wax lubricant and multi-walled carbon nanotubes

Khun, Nay Win; Zhang, H.; Yang, Jinglei; Liu, Erjia

doi:10.1007/s40544-013-0028-9

Cited by 72 publications

(50 citation statements)

References 34 publications

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“…Generally, the mechanical strength of a polymer has a significant influence on its friction coefficient and wear [41,42]. The poor mechanical strength of a polymer can result in the higher friction coefficient of the polymer by promoting the contact between the polymer and its counterpart and the wear of the polymer attributed to micro-plastic deformation and micro-cutting caused by the surface asperities of the counterpart [41,42].…”

Section: Resultsmentioning

confidence: 99%

“…The poor mechanical strength of a polymer can result in the higher friction coefficient of the polymer by promoting the contact between the polymer and its counterpart and the wear of the polymer attributed to micro-plastic deformation and micro-cutting caused by the surface asperities of the counterpart [41,42]. The increased hardness and elastic modulus of the epoxy composites with increased SCF content (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Tribological properties of short carbon fibers reinforced epoxy composites

et al. 2014

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Short carbon fiber (SCF) reinforced epoxy composites with different SCF contents were developed to investigate their tribological properties. The friction coefficient and wear of the epoxy composites slid in a circular path against a steel pin inclined at 45° to a vertical axis and a steel ball significantly decreased with increased SCF content due to the solid lubricating effect of SCFs along with the improved mechanical strength of the composites. The scanning electron microscope (SEM) observation showed that the epoxy composites had less sensitive to surface fatigue caused by the repeated sliding of the counterparts than the epoxy. The tribological results clearly showed that the incorporation of SCFs was an effective way to improve the tribological properties of the epoxy composites.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Tribological properties of short carbon fibers reinforced epoxy composites

et al. 2014

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“…The released ionic liquid from broken microcapsules should form a thin film on the contact surface. This thin film effectively lubricates the rubbing surfaces, lessens the direct solid-solid contact between the steel ball and the composite, reduces the wear of the rubbing surfaces, and lessens the interactions between the rubbing surfaces and wear particles [16,17]. Figure 6c shows the wear widths and depths of the pure polyurethane composite coating and polyurethane composite coating filled with microcapsules.…”

Section: Characterization Of the Microcapsulesmentioning

confidence: 99%

“…To overcome or circumvent the drawbacks of external liquid lubricants, liquid lubricants were encapsulated to fabricate organic or inorganic shell microcapsules, and the microcapsules were further incorporated to polymer matrixes to provide ultra-low friction coefficient and wear rate because of the effective lubricating effect of released lubricant from rupture microcapsules [16,17]. Recently, Khun et al [18] reported that silicone composite coating modified by microencapsulated wax lubricant exhibited considerably lower friction coefficient compared to pure silicone coatings.…”

Section: Introductionmentioning

confidence: 99%

Tribological Behaviors of Polyurethane Composite Coatings Filled with Ionic Liquid Core/Silica Gel Shell Microcapsules

et al. 2015

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Silica gel shell microcapsules containing ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF 6 ]) have been successfully synthesized through an interfacial self-assembly process and solgel reaction. They are further developed as filler to improve the tribological property of polyurethane composite coatings. The tribological behaviors of the polyurethane composite coatings filled with microcapsules have been systematically investigated using ball-on-disk tribological test. The results showed that the polyurethane composite coating filled with microcapsules displayed much lower friction coefficient and wear, compared with that of unfilled one. It is demonstrated that the ionic liquid released from the broken microcapsules during the friction process lubricates the rubbing surfaces and prevents a direct contact between steel ball and coating, leading to a lower friction coefficient and a lower wear width and depth.

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“…In addition, significant microwave features are apparently found in the center of the wear track as shown in Figure 19.7(a) and (b). The repeated sliding of the steel ball under a high normal load causes surface fatigue which in turns initiates minute cracks perpendicular to the sliding direction and propagates the cracks into the subsurface [48][49][50]. The formation of a network of microcracks creates microwave features as found in Figure 19.7(b) [49,50].…”

Section: 6mentioning

confidence: 99%