Effect of solid lubricants on tribological behavior of glass fiber reinforced polyamide 6

Li, Duxin; Deng, Xiaomin; Li, Wenjuan; Xie, Ying

doi:10.1002/pc.22582

Cited by 12 publications

(7 citation statements)

References 42 publications

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“…The possible mechanisms of selective adsorption [37], excluded free volume [38] and ball-bearing effect [39] are also reported in literature to explain the decrease in melt viscosity when nanofillers are introduced to the polymer matrix. Another possible explanation for observed melt viscosity changes with GO loading can result from lubricant behaviour of graphite [40]. The graphene layers coupled by week van der Waals-like bonds can easily slide past each other.…”

Section: Physical Properties Of Nanocompositesmentioning

confidence: 99%

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Paszkiewicz¹,

Szymczyk²,

Špitálský³

et al. 2014

European Polymer Journal

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a b s t r a c tPoly(trimethylene terephthalate-block-tetramethylene oxide) (PTT-PTMO) copolymer/ graphene oxide nanocomposites were prepared by in situ polymerization. From the SEM and TEM images of PTT-PTMO/GO nanocomposite, it can be seen that GO sheets are clearly well-dispersed in the PTT-PTMO matrix. TEM images also showed that graphene was well exfoliated into individual sheets, suggesting that in situ polymerization is a highly efficient method for preparing nanocomposites. The influence of GO on the two-phase structure, melt viscosity and mechanical properties of PTT-PTMO block copolymer was examined by using DSC, ARES rheometer and tensile tests. The DSC results imply that the introduction of GO did not affect the glass transition temperature of PTMO-rich soft phase, melting temperature of PTT hard phase and degree of crystallinity of the nanocomposites. As the graphene oxide loading in the nanocomposites increase, the enhanced Young's modulus and yield stress was observed. The tensile strength slightly increased with the increase of GO from 0 to 0.5 wt% when elongation at break was higher or comparable to the value of neat PTT-PTMO copolymer.

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Section: Physical Properties Of Nanocompositesmentioning

confidence: 99%

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Paszkiewicz¹,

Szymczyk²,

Špitálský³

et al. 2014

European Polymer Journal

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“…To obtain the desired properties of a PMC, the reinforcements and fillers are added to thermoset/thermoplastic matrices [35][36][37]. The synergistic improvements in mechanical and tribological properties in many cases are attained through the incorporation of glass or carbon fiber reinforcement and particulate fillers [38,39].…”

Section: Methodsmentioning

confidence: 99%

Mechanical and Tribological Behavior of Vinyl Ester Hybrid Composites

Kumar¹,

Ramalingaiah²,

Hemanth³

2018

Tribol. Ind.

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An attempt has been made to explore the effect of hybrid reinforcement on mechanical properties and dry sliding wear behavior of vinyl ester (VE) composites. Vinyl ester reinforced with alkali treated coir fibers (CF-VE), silanated aramid fibers (AFs) leading to fibridization and inclusion of coconut shell powder (CSP) with various weight proportions has been prepared resulting in hybridization. Effectiveness of treated fibers and CSP on mechanical and wear behavior of VE and their hybrids was evaluated. The density and hardness values of CF-VE composite increased steadily with inclusion of AFs and CSP. The tensile strength increased from 52 MPa at 0 wt.% AFs inclusion to a maximum of 76 MPa at 15 and 5 wt.% of AFs and CSP content. Further, it increased to a maximum of 78 MPa at 5 and 10 wt.% of AFs and CSP in CF-VE composite. The specific wear rate decreased more rapidly with the CSP content. Hence, it is deduced that hybrid VE (15CFs+5AFs) composite with 10 wt.% CSP is more effective against sliding wear. The type, geometry and dispersion of reinforcements contribute to the increased wear resistance. These results are important for the development of new composites incorporated with surface treated reinforcing materials such as CF and CSP, which will have significant application in automotive sliding or bearing components.

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“…The influence of different types of graphite on the properties of PA6, which is the subject of our work, was also studied; however, various results were reported. You et al reported that the addition of graphite (particle size 25 μm) to PA6/GF increased COF and wear [16]. In contrast, Unal and Mimaroglu found a decrease in COF and wear for PA6/graphite composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of Expanded Graphite on Mechanical and Tribological Properties of Polyamide 6/Glass Fibre Composites

Japić¹,

Kulovec²,

Kalin

et al. 2022

Advances in Polymer Technology

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The quality of plastic gears, especially their durability, is becoming increasingly important due to advances in electric mobility. Therefore, new materials are being developed that must have better mechanical properties, high thermal conductivity for heat dissipation, and tribological properties. The composites of expanded graphite (EG) and glass fibre-reinforced polyamide 6 (PA6/GF) were prepared, and the effect of EG particle size (~5 μm (EG5) and ~1000 μm (EG1000)) on these properties was investigated. Composites with different contents (2-10 wt%) of EG in PA6/GF were prepared using a laboratory twin-screw extruder and then injection moulded in the form of rods and discs required for thermal, thermomechanical, and tribological tests. EG acted as a nucleating agent but hindered the crystallization rate at higher concentrations, which was more pronounced when EG5 was added. Dynamic mechanical analysis showed that the storage modulus increased with the addition of both types of EG. However, the addition of EG5 increased the storage modulus more than EG1000. The lowest coefficient of friction was obtained by the addition of 10 wt% EG5. The wear increased with the addition of both types of EG, only slightly with the addition of EG1000. The thermal conductivity of the composites with EG increased from 0.42 W/mK to 1 W/mK. The results show that the use of EG with smaller particle size is much more beneficial than with a larger one.

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Effect of solid lubricants on tribological behavior of glass fiber reinforced polyamide 6

Cited by 12 publications

References 42 publications

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Structure and properties of nanocomposites based on PTT-block-PTMO copolymer and graphene oxide prepared by in situ polymerization

Mechanical and Tribological Behavior of Vinyl Ester Hybrid Composites

Effect of Expanded Graphite on Mechanical and Tribological Properties of Polyamide 6/Glass Fibre Composites

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