Increasing wear resistance of UHMWPE by mechanical activation and chemical modification combined with addition of nanofibers

Wannasri, S.; Panin, S. V.; Иванова, Л. И.; Корниенко, Л. А.; Piriyayon, S.

doi:10.1016/j.proeng.2009.06.018

Cited by 34 publications

(20 citation statements)

References 2 publications

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“…Panin et al . demonstrated that the polymer particles deform repeatedly during the mechanically activated processing of UHMWPE . Mechanical activation leads to the flattening of spherical UHMWPE particles to flat flakes with sizes in the range 50–200 microns.…”

Section: Resultsmentioning

confidence: 99%

“…We have reported different techniques to modify polymer nanocomposites (PNCs) to achieve good tribotechnical and mechanical properties. It is to be noted that the uniform distribution of NPs in the PNCs is critical to achieving high tribotechnical and mechanical properties . Here, we report joint mechanical activation as a unique physical activation method to maximize the uniform distribution of NPs in PNCs.…”

Section: Introductionmentioning

confidence: 93%

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Supramolecular Structure and Mechanical Characteristics of Ultrahigh‐Molecular‐Weight Polyethylene–Inorganic Nanoparticle Nanocomposites

Охлопкова

Borisova

Никифоров

et al. 2016

Bulletin Korean Chem Soc

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We investigated the mechanical properties and structure of polymeric nanocomposites (PNCs) with an ultrahigh-molecular-weight polyethylene (UHMWPE) matrix and aluminum and silicon oxide and nitride nanoparticle (NP) fillers. Mixing with a paddle mixer or by joint mechanical activation in a planetary mill was used for the PNC preparation. Joint mechanical activation afforded PNCs with better mechanical properties than paddle mixing. Scanning electron microscopy suggested that the poorer mechanical properties can be attributed to the disordered regions and imperfect spherulites in the PNC supramolecular structure arising from paddle mixing. The better mechanical properties observed with joint mechanical activation may derive from the uniform NP distribution in the polymer matrix and absence of disordered regions.Keywords: Ultrahigh-molecular-weight polyethylene, Nanoparticle, Polymer nanocomposite, Mechanical characteristics, Supramolecular structure IntroductionIn recent years, the design and controlled fabrication of nanostructured materials with defined physicochemical properties have gained considerable interest. 1 Nanocomposites based on polymers and inorganic nanoparticles (NPs) have, in particular, demonstrated significant performance in terms of mechanical properties, fire resistance, gas permeability, and electrical conductivity.1 Conventional sealing, structural, and antifriction materials usually undergo degradation under extreme conditions, such as very low temperatures.2 Therefore, materials for application in arctic environments require high strength as well as frost, wear, and corrosion resistance. Ultrahigh-molecular-weight polyethylene (UHMWPE) is known to retain its high mechanical and tribotechnical properties at low temperatures, including cryogenic conditions, 2,4 and under high loading. 5 UHMWPE also shows excellent self-lubrication properties, high-impact strength, and excellent corrosion and frost resistance in comparison with other polymers. High-density UHMWPE provides good stiffness characteristics and abrasion and chemical resistance. 5 In addition to the intrinsic characteristics of UHMWPE, its mechanical and tribotechnical properties have been improved by the addition of NP fillers to the polymer. 6 Briscoe et al. demonstrated that the addition of PbO and CuO fillers to high-density polyethylene reduced wear because of the formation of a strong transfer film.7 By manufacturing composites of UHMWPE and ceramics such as Al 2 O 3 , ZrO 2 , and Si 3 N 4 , biocompatible and wear-and scratch-resistant hybrid materials were successfully fabricated recently and found applications in orthopedics. 8,9 Metallic silver NPs in UHMWPE demonstrated good wear and tribochemical properties. 10 We have reported different techniques to modify polymer nanocomposites (PNCs) 2,11 to achieve good tribotechnical and mechanical properties. It is to be noted that the uniform distribution of NPs in the PNCs is critical to achieving high tribotechnical and mechanical properties.12 Here, we report joint mechanical ...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Supramolecular Structure and Mechanical Characteristics of Ultrahigh‐Molecular‐Weight Polyethylene–Inorganic Nanoparticle Nanocomposites

Охлопкова

Borisova

Никифоров

et al. 2016

Bulletin Korean Chem Soc

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show abstract

“…The results of the friction coefficient measurements are presented in Figure 15. It is seen that loading with the CNF resulted in a halving friction coefficient compared with neat UHMWPE due to the solid lubricant effect of the nanofiller [43]. When loading 10% MCF, the friction coefficient initially significantly increased from 0.06 up to 0.15, and then remained stable until the end of the tribological tests.…”

Section: Uhmwpe-based Composites Loaded With Carbon Fibers Of Differementioning

confidence: 93%

Increasing Wear Resistance of UHMWPE by Loading Enforcing Carbon Fibers: Effect of Irreversible and Elastic Deformation, Friction Heating, and Filler Size

et al. 2020

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The aim of the study was to develop a design methodology for the UltraHigh Molecular Weight Polyethylene (UHMWPE)-based composites used in friction units. To achieve this, stress–strain analysis was done using computer simulation of the triboloading processes. In addition, the effects of carbon fiber size used as reinforcing fillers on formation of the subsurface layer structures at the tribological contacts as well as composite wear resistance were evaluated. A structural analysis of the friction surfaces and the subsurface layers of UHMWPE as well as the UHMWPE-based composites loaded with the carbon fibers of various (nano-, micro-, millimeter) sizes in a wide range of tribological loading conditions was performed. It was shown that, under the “moderate” tribological loading conditions (60 N, 0.3 m/s), the carbon nanofibers (with a loading degree up to 0.5 wt.%) were the most efficient filler. The latter acted as a solid lubricant. As a result, wear resistance increased by 2.7 times. Under the “heavy” test conditions (140 N, 0.5 m/s), the chopped carbon fibers with a length of 2 mm and the optimal loading degree of 10 wt.% were more efficient. The mechanism is underlined by perceiving the action of compressive and shear loads from the counterpart and protecting the tribological contact surface from intense wear. In doing so, wear resistance had doubled, and other mechanical properties had also improved. It was found that simultaneous loading of UHMWPE with Carbon Nano Fibers (CNF) as a solid lubricant and Long Carbon Fibers (LCF) as reinforcing carbon fibers, provided the prescribed mechanical and tribological properties in the entire investigated range of the “load–sliding speed” conditions of tribological loading.

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“…Grinding balls of planetary mill deforms UHMWPE particles during mechanical activation and transform them into flat flakes with dimensions 50 -200 microns [9]. This process results in increase of mechanical properties because of increase in specific surface area of polymer particles.…”

Section: Mechanical Activation Of Nanoparticles With Polymermentioning

confidence: 99%

Polymer Nanocomposites Exploited Under The Arctic Conditions

Охлопкова¹,

Никифоров²,

Охлопкова³

et al. 2016

Kms

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Several technologies of the preparation of nanocomposites based on ultra-highmolecular-weight polyethylene were developed. The first technology is based on mechanical activation of layered silicates with surfactant before addition into polymer matrix. The second technology represents mixing of ultra-high-molecular-weight polyethylene with nanoparticles by joint mechanical activation in a planetary mill. The third technology is based on mixing of ultra-high-molecular-weight polyethylene with nanoparticles in liquid media under continuous ultrasonic treatment. Common features of these technologies are reaching of filler uniform distribution in a polymer matrix and significant improvement in the mechanical properties. Also, supramolecular structure of the composites was studied.

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Increasing wear resistance of UHMWPE by mechanical activation and chemical modification combined with addition of nanofibers

Cited by 34 publications

References 2 publications

Supramolecular Structure and Mechanical Characteristics of Ultrahigh‐Molecular‐Weight Polyethylene–Inorganic Nanoparticle Nanocomposites

Supramolecular Structure and Mechanical Characteristics of Ultrahigh‐Molecular‐Weight Polyethylene–Inorganic Nanoparticle Nanocomposites

Increasing Wear Resistance of UHMWPE by Loading Enforcing Carbon Fibers: Effect of Irreversible and Elastic Deformation, Friction Heating, and Filler Size

Polymer Nanocomposites Exploited Under The Arctic Conditions

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