Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties

Simić, Danica; Stojanović, Dušica; Kojović, Aleksandar; Dimić, Mirjana; Totovski, Ljubica; Uskoković, Petar S.; Aleksić, Radoslav

doi:10.1016/j.matchemphys.2016.09.060

Cited by 39 publications

(16 citation statements)

References 31 publications

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“…These polyhedral onion-like nanostructures were first discovered by Tenne et al in 1992 [1] and have constantly shown the ability to improve the tribological properties of different systems ever since. Lower friction and wear can be achieved by adding TMDC NPs to oils [2][3][4][5][6][7][8] or by incorporating them in solid matrices [6,[9][10][11][12] and in coatings [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Testing of WS2 Nanoparticles Functionalized by a Humin-Like Shell as Lubricant Additives

et al. 2018

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Nanoparticles of transition metal dichalcogenides (TMDC) have been known to reduce friction and wear when added to oil-type liquid lubricants. Aggregation limits the ability of the nanoparticles to penetrate into the interface between the two rubbing surfaces-an important factor in friction reduction mechanisms. Doping has been successfully used to reduce agglomeration, but it must be done in the production process of the nanoparticles. The use of surface-functionalized nanoparticles is less common than doping. Nonetheless, it has the potential to reduce agglomeration and thereby improve the reduction of friction and wear. In this study, we present the results of preliminary tribological ball-on-flat tests performed with WS 2 nanoparticles functionalized by a humin-like conformal shell, as additives to polyalphaolefin-4 (PAO-4) oil. We tested WS 2 inorganic nanotubes (INTs) and two grades of inorganic fullerene-like nanoparticles (IFs). The shell/coating was found to improve friction reduction for IFs but not for INTs through better dispersion in the oil. The thicker the coating on the IFs, the less agglomerated they were. Coated industrial-grade IFs were found, by far, to be the best additive for friction reduction. We suggest the combination between reduced agglomeration and poor crystallinity as the reason for this result.

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Section: Introductionmentioning

confidence: 99%

Testing of WS2 Nanoparticles Functionalized by a Humin-Like Shell as Lubricant Additives

et al. 2018

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“…A detailed analysis of the possibility of preparing PVB/IF-WS 2 composites was conducted. PVB is a thermoplastic polymer with excellent properties, widely used for protection of safety glass, in metal primers and different types of protective coatings, temporary binders, in ballistic protection [16,33]. PVB is a tough polymer with excellent flexibility, broad compatibility with modifying resins and additives, non toxic and low odor, good adhesion to many substrates and strong binding, impact resistance, good tensile strength and elasticity, freezing and aging resistance, well soluble in alcohols and many other organic solvents, fast drying, fast solvent release and low solvent retention, good film formation, transparent and colorless.…”

Section: Nanomodified Polymers and Coatingsmentioning

confidence: 99%

“…After preliminary physico-chemical examinations, effect of nanoparticles addition on thermal, mechanical and rheological behavior of PVB/WS 2 was studied [15][16][17][18]. Detailed investigation was conducted of the effects of using different solvents in preparation of PVB/IF-WS 2 nanocomposite -PVB was dissolved in ethanol, isopropanol, n-butanol and ethyl acetate.…”

Section: Nanomodified Polymers and Coatingsmentioning

confidence: 99%

“…In the Military Technical Institute in Belgrade (VTI) there has been an established research in the field of nanomaterials application for defense technologies, covering several topics: CBRN protection, polymer composites, coatings, camouflage paints, metal surfaces protection from abrasion and friction, in structural and ballistic composites and in energetic materials [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Also, WS 2 nanoparticles and nanotubes are used in rubber-textile materials for CBRN protection, to enhance mechanical resistance of these materials [6][7][8][9][10]. Using WS 2 nanoparticles and nanotubes as fillers in polymer coatings resulted in improvements of mechanical resistance and of camouflage performance, as well as in poly (vinyl butyral), PVB coatings on glass, in two-component polyurethane coating and in a two-component water-based paint for military camouflage protection [11][12][13][14][15][16][17][18]. The same nanostructures are used as a reinforcement of multilayer laminate composites based on aramid fabric and PVB for ballistic protection, as well as in carbon fibre/ epoxy composites for aircraft construction.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nanotechnology for military applications: A survey of recent research in Military technical institute

Simić¹,

Marjanović²,

Vitorović-Todorović³

et al. 2018

Sci Tech Rev

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Armies of powerful armed forces are already applying achievements of nanoscience and supporting researches in the field of nanotechnology. This paper surveys the recent research in the area of nanomaterials application in defence technologies, conducted in the Military Technical Institute in Belgrade, Serbia. This research covers the most important results obtained so far in the following areas: chemical biological, radiological and nuclear protection (CBRN protection), nanomodified polymer coatings and camouflage paints, composite structures for military aircraft, ballistic protection composites, and energetic materials. Researches gave promising results in all the named fields and encourage nanomaterials application in future.

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Dual nanoparticles effect on the frictional and vibrational dissipation behaviors of polymer‐based water‐lubricated bearing materials

Li,

Dong,

Yuan

et al. 2024

J of Applied Polymer Sci

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Marine water‐lubricated bearings have the advantages of environmental friendliness and long replacement cycle. However, when under the complex lubrication circumstance, the frictional and vibrational behaviors of water‐lubricated bearing always dissipate the mechanical energy output from the ship's diesel engine. Aiming at this problem and combining with previous research findings, in this paper, ceramic balls with similar mechanical properties to ship's main shaft were selected as the friction counterpart to simulate the operating conditions of marine water‐lubricated bearing. Meanwhile, dual nanoparticles of tungsten disulfide (WS2) and titanium dioxide (TiO2) were used to modify ultra‐high molecular weight polyethylene (UHMWPE) bearing material. The tribological and vibrational properties of the prepared composites were carefully investigated. The results showed that compared to pure UHMWPE, with the synergistic effect of 0.75 wt% WS2 and 0.9 wt% TiO2, the frictional and vibrational behaviors of the composites were reduced by 43.3% and 42.7%. Mechanical testing and microscopic characterization revealed the enhancement mechanism of these nanoparticles on UHMWPE. This study proposed a design strategy on marine water‐lubricated bearings for engineering application.

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Inorganic fullerene-like IF-WS2/PVB nanocomposites of improved thermo-mechanical and tribological properties

Cited by 39 publications

References 31 publications

Testing of WS2 Nanoparticles Functionalized by a Humin-Like Shell as Lubricant Additives

Testing of WS2 Nanoparticles Functionalized by a Humin-Like Shell as Lubricant Additives

Nanotechnology for military applications: A survey of recent research in Military technical institute

Dual nanoparticles effect on the frictional and vibrational dissipation behaviors of polymer‐based water‐lubricated bearing materials

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