The roles of rigid particles on the friction and wear behavior of short carbon fiber reinforced PBT hybrid materials in the absence of solid lubricants

Lin, Leyu; Schlarb, Alois K.

doi:10.1016/j.triboint.2017.11.024

Cited by 41 publications

(16 citation statements)

References 29 publications

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“…PBT has a low wear and friction coefficient and, even unreinforced, it exhibits high stiffness and strength. For example, this is shown, in [20] in block-on-ring tests with injection-moulded specimens for pure PBT and in [21,22] for different PBT composites. In [23], the influences of the injection-moulding process on a fibre-reinforced PBT are evaluated in the ball-on-plane test.…”

Section: Introductionmentioning

confidence: 88%

Investigation of Process Control Influence on Tribological Properties of FLM-Manufactured Components

Hesse¹,

Stanko²,

Hohenberg³

et al. 2020

JMMP

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In recent years, additive manufacturing methods such as Fused Layer Modeling have been continuously improved by industry and research institutions. In many cases, the influence of process control on the mechanical component properties is being investigated. Influencing parameters include the infill and its orientation as well as patterns. Extrusion parameters such as the volume flow, which can be influenced by the speed, the line width, and the layer thickness, and the temperatures, which determine the interlaminar bonding between the lines and layers, are relevant as well. In this contribution, the influence of process control on the tribological properties of cylindrical tribo-test specimens made of polybutylene terephthalate is investigated. Using a reciprocating pin-on-plate tribo-tester, the static and dynamic friction forces as well as the linear wear is determined. The results show a significant influence of the orientation and density of the infill on the tribological properties. Due to the process-specific large degrees of freedom, the advantage of a load-compatible individualisation and consequently the optimisation of tribologically exposed components is given compared to conventional manufacturing processes.

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Section: Introductionmentioning

confidence: 88%

Investigation of Process Control Influence on Tribological Properties of FLM-Manufactured Components

Hesse¹,

Stanko²,

Hohenberg³

et al. 2020

JMMP

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show abstract

“…As shown in Figure 6, the COF of PC-P maintains a steady-state during the whole wearing process, but the COF of PC-F exhibits a two-stage transformation phenomenon, while the COF drops from 0.24 to 0.14 after 6000 cycles. The formation of resin transfer films on the steel counterpart has been reported as a positive mechanism for the reduction of COF in the case of polymer-based composites [17]. The specific wear rate of PC-F significantly increased from 9.3 × 10 −6 to 2.1 × 10 −5 cm 3 /Nm, in comparison to PC-P, by increasing the sliding speed.…”

Section: Effect Of Sliding Speed On Friction Coefficient and Specificmentioning

confidence: 96%

“…Carbon fibers specifically are used as reinforcement due to their distinctive properties such as self-lubrication, chemical inertness, high strength and modulus, and excellent thermal stability [10,15]. Many papers have reported on the tribological performance of polymer-matrix composites with short or continuous carbon fibers [16][17][18][19]. The friction behaviors of the staple carbon fiber composites have been reported having stable behavior [20].…”

Section: Introductionmentioning

confidence: 99%

“…Polymer materials have an excellent strength-to-weight ratio and possess excellent tribological properties. Examples include thermoplastics such as polybutylene terephthalate (PBT) [17], polyamide (PA) [12,21], polyetheretherketone (PEEK) [22,23], and polycarbonate (PC) [24,25]. Most of these materials are semi-crystalline polymers that have a low glass transition temperature (Tg).…”

Section: Introductionmentioning

confidence: 99%

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Friction and Wear Performance of Staple Carbon Fabric-Reinforced Composites: Effects of Surface Topography

Lai

Chen

et al. 2020

Polymers

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Here, staple carbon fiber fabric-reinforced polycarbonate (PC)- and epoxy (EP)-based composites with different impregnating resin levels were fabricated using a modified film stacking process. The effects of surface topographies and resin types on the tribological properties of stable carbon fabric composites (sCFC) were investigated. Friction and wear tests on the carbon composites were conducted under unlubricated sliding using a disk-on-disk wear test machine. Experimental results showed that the coefficient of friction (COF) of the sCFC was dominated by matrix type, followed by peak material portion (Smr1) values, and finalized with core height (Sk) values. The COF of composites decreased by increasing the sliding speed and applied pressure. This also relied on surface topography and temperature generated at the worn surface. However, the specific wear rate was strongly affected by resin impregnation. Partially-impregnated composites showed lower specific wear rate, whereas fully-impregnated composites showed a higher wear rate. This substantially increased by increasing the sliding speed and applied pressure. Scanning electron microscopy observations of the worn surfaces revealed that the primary wear mechanisms were abrasion, adhesion, and fatigue for PC-based composites. For EP-based composites, this was primarily abrasion and fatigue. Results proved that partially-impregnated composites exhibited better tribological properties under severe conditions.

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“…Many results have shown that polymers with 2D solid lubricants are beneficial informing tribofilms on mating surfaces, and the intrinsic ease of shearing of these materials resulted in friction reduction [17−21]. Another frequently studied concept is to enhance load bearing and reduce abrasion by incorporating various fibers and metal oxide nanoparticles [5,22,23]. The friction and wear behavior of TPI composites at high temperature is different from room temperature, but this work has been rarely reported at [24,25].…”

Section: Introductionmentioning

confidence: 98%

Exploring the friction and wear behaviors of Ag-Mo hybrid modified thermosetting polyimide composites at high temperature

Duan

Song

et al. 2019

Friction

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Polyimide composites have been extensively used as motion components under extreme conditions for their thermal stability and special self-lubricating performance. In the present study, Ag-Mo hybrids as lubricant fillers were incorporated into thermosetting polyimide to prepare a new type of tribo-materials (TPI-1) at high temperature. Comprehensive investigations at different temperatures reveal that the newly developed TPI-1 exhibits a better reduction in friction and wear rate below 100 °C , but all of them increase significantly when the bulk temperature exceeds 250 °C. The wear mechanisms demonstrated that sandwich-like tribofilms with different layers were established at different temperatures, which was further verified by characterization of scanning electron microscope (SEM), Raman spectroscopy, and transmission electron microscope (TEM). Considering the high-performance TPI coupled with Ag-Mo hybrids, we anticipate that further exploration would provide guidance for designing TPI tribo-materials that would be used at high temperatures.

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The roles of rigid particles on the friction and wear behavior of short carbon fiber reinforced PBT hybrid materials in the absence of solid lubricants

Cited by 41 publications

References 29 publications

Investigation of Process Control Influence on Tribological Properties of FLM-Manufactured Components

Investigation of Process Control Influence on Tribological Properties of FLM-Manufactured Components

Friction and Wear Performance of Staple Carbon Fabric-Reinforced Composites: Effects of Surface Topography

Exploring the friction and wear behaviors of Ag-Mo hybrid modified thermosetting polyimide composites at high temperature

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