Eco-friendly mono-layered PTFE blended polymer composites for dry sliding tribo - systems

Karthikeyan, Subramanian; Rajini, N.; Baets, Patrick De; Saravanasankar, S.; Thangiah, Winowlin Jappes Jebas; Sukumaran, Jacob

doi:10.1016/j.triboint.2016.06.015

Cited by 23 publications

(9 citation statements)

References 47 publications

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“…However, high wear rate of PTFE limits its applications. 2 For modification of PTFE in solid lubrication field, a considerable amount of traditional fillers, such as ceramics, 3,4 metals, 5,6 and polymers 7,8 can provide moderate increase in tribological properties. However, they may also cause a significant mechanical properties reduction under water lubricated condition, or react with new energy batteries to induce negative effects, which limit the further application of the resulting composites as industrial machine components in new-energy-vehicle fields.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Wang

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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Graphene was successfully modified by amino-functionalization process. The Fourier transform-infrared spectroscopy, Raman spectroscopy, and X-ray diffractometer were used to characterize the amino-functionalization result. The transmission electron microscopy was used to visualize the morphology of graphene and fractured surface of its resulting composite. The tribological behaviors of amino functionalized graphene reinforced polytetrafluoroethylene composite were evaluated by using a face-to-face contact mode under dry sliding/water lubricated condition. The worn surface was characterized by using a scanning electronic microscope equipped with an energy dispersive spectroscopy in order to find the reasons for the better tribological behaviors. The anti-friction and anti-wear mechanisms of amino functionalized graphene reinforced polytetrafluoroethylene composite were elucidated based on the experimental results. In all, this work is hoped to be helpful in designing and researching a new industrial material which can be used for water lubricated conditions in new-energy-vehicle fields.

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Section: Introductionmentioning

confidence: 99%

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Wang

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…The schematic diagram of the tribological test rig was demonstrated in our previous publications [23]. The counter surface disc was made of 100 chromium steel having dimensions of 200 mm length, 20 mm thickness and 0.1-0.2 mm surface roughness (Ra).…”

Section: Tribological Evaluationmentioning

confidence: 99%

“…Both uncoated and PTFE-coated basalt–vinyl ester composites were fabricated using hand layup techniques. The tailor-made coated composites were fabricated based on tribologically optimized condition (PTFE 10 wt.%) [23]. A detailed step-by-step process of fabrication methodology is described below.…”

Section: Fabrication and Measurement Techniquesmentioning

confidence: 99%

“…The dry sliding wear test of basalt-/PTFE-filled vinyl ester hybrid composites was performed using medium scale flat (MSF) testing machine at Laboratory Soete (Ghent University, Belgium). The schematic diagram of the tribological test rig was demonstrated in our previous publications [23]. The counter surface disc was made of 100 chromium steel having dimensions of 200 mm length, 20 mm thickness and 0.1–0.2 µm surface roughness (Ra).…”

Section: Fabrication and Measurement Techniquesmentioning

confidence: 99%

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Dynamic mechanical and thermogravimetric analysis of PTFE blended tailor-made textile woven basalt–vinyl ester composites

Karthikeyan

Rajini

Saravanasankar

et al. 2016

Journal of Industrial Textiles

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In this work, the authors prepared basalt-vinyl ester tailor-made green composites with uncoated and polytetrafluroethylene coated basalt woven fabric. These composites were subjected to dynamic composites-made mechanical analysis and thermo gravimetric analysis. Results revealed that a significant improvement of 18%, 14% and 13% was observed for storage and loss modulus and damping properties of polytetrafluroethylene-coated composite at low temperature region. The thermo gravimetric analysis results indicated a three-stage degradation for the polytetrafluroethylene-filled composites. Based on the acceptability from the literature, the tribo-test was performed only on the polytetrafluroethylene-coated composite for the selected PV limit of 400 MPa-mm/s (10 KN and 50 mm/s) in a flat-on-flat configuration. It was found that the influence of polytetrafluroethylene filler on the static and dynamic coefficient of friction and specific wear rate of the composite was more pronounced at dry wear test condition and it was found as 0.22, 0.12, and 4.87484 E-09, respectively. However, the results of improved storage and loss modulus and damping manifested Corresponding author: Rajini Nagarajan, Kalasalingam University, Srivilliputtur, 626 126, Tamil Nadu, India. Email: rajiniklu@gmail.com negative correlation with the friction characteristics in the glassy region. Further, the SEM-coupled EDX spectral analysis was performed to understand the formation of transfer layer in counter surface. This polytetrafluroethylene blended composite is to be considered as an alternative to the bearing materials in offshore application.

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“…To satisfy these parameters, reinforcing fibers are commonly used in friction washers to improve tribological and mechanical properties such as thermal stability, strength, and stiffness [3][4][5]. Different fibers such as cellulose [6], Kevlar [7], ceramic [8], carbon [9][10][11], and glass [12][13][14], have also been incorporated into friction materials, leading to improvements in tribological properties. 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].…”

Section: Introductionmentioning

confidence: 99%

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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Eco-friendly mono-layered PTFE blended polymer composites for dry sliding tribo - systems

Cited by 23 publications

References 47 publications

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Tribological behaviors of amino functionalized graphene reinforced PTFE composite

Dynamic mechanical and thermogravimetric analysis of PTFE blended tailor-made textile woven basalt–vinyl ester composites

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

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