Tribological behaviours of carbon filled polytetrafluoroethylene (PTFE) dry journal bearings

Tevrüz, Talat

doi:10.1016/s0043-1648(98)00258-0

Cited by 78 publications

(48 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…They concluded that besides the influence of the rotational speed and load, part of the heat generated in contact changes the temperature of lubricating oil, which significantly influences the value of the coefficient of friction, and thus leads to a change in wear. Tevrüz [16] noted that it is possible to reduce the impact of rotational speed and pressure in bearings made of PTFE with 35 % carbon operating at low and medium speeds by cooling (which is confirmed by research conducted in [15]). In this condition, stable wear occurs after 6-8 hours of operation and a stable coefficient of friction after 20÷25 hours.…”

Section: Introductionmentioning

confidence: 73%

“…The temperature in the contact zone is a key factor which influences the quality of operation of bearings made of polymeric materials [7,8,11,13,15,16]. Determination of the accurate value of flash temperature plays a major role [1] in the overall temperature that influences the operation of a polymer bearing.…”

Section: Introductionmentioning

confidence: 99%

“…Theoretical formulations in [1,17] do not provide sufficiently precise descriptions of flash temperature T f determination in specific operating conditions, while experimental research has certain technical limitations in the measurement of the temperature in the contact zone. The group of authors in [8,11,13,16] uses a standard way of temperature determination by means of thermocouples installed in the metallic sample. The problem related to this type of temperature measurement is in the measuring system inertia which results in reduced accuracy of measurement since the flash temperature T f is localized and lasts for a very short period.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of contact pressure and sliding speed on the temperature and coefficient of friction in sliding contact between two PET samples

2016

Teh. vjesn.

View full text Add to dashboard Cite

Original scientific paper The use of polymeric materials has been growing steadily. A more extensive use of polymers as bearing materials will be made possible by a better knowledge of the properties of particular materials and their compatibility in a particular application. Poly(ethylene terephthalate) (PET) with the addition of Polytetrafluorethylene (PTFE) shows potential for being used as a material for machine parts rotating at lower loads due to its good ratio between manufacturing costs and mechanical properties. The use of PET in a PET/PET combination has been tested in three working points, with a lubricant applied once in each run and with three different values of sliding speed and of load. The change in temperature which occurs in the vicinity of the outlet zone of the contact at the end of the sliding path after 9 hour operation is presented. The applied method and temperature measurement are explained. The distribution of obtained maximum and average temperatures in the load range 9 ÷ 18 MPa and the sliding speed range 0,8 ÷ 2 m/s is shown for single working points. In addition, the effects of lubricant application on the increase in the magnitude of the load carrying capacity and on the decrease in the value of friction coefficient are shown in comparison with the reference values of temperature and friction coefficient in the dry contact operation. Keywords: flash temperature; friction; load; PET; sliding Utjecaj kontaktnog pritiska i brzine klizanja na temperaturu i faktor trenja u kontaktu s uzorcima od PET-aIzvorni znanstveni članak Upotreba polimernih materijala u stalnom je porastu, područje primjene polimera kao ležajnog materijala povećat će se boljim poznavanjem karakteristika pojedinih materijala te njihove kompatibilnosti u određenim primjenama. Primjena polietilen tereftalata (PET) s dodatkom politetraflouretilena (PTFE) zbog omjera proizvodnih troškova i mehaničkih svojstava pokazuje potencijal u primjeni kod strojnih dijelova u rotaciji pri nižem opterećenju. Primjena PET-a u kombinaciji PET/PET ispitana je u tri radne točke uz jednokratnu primjenu maziva kod tri različita iznosa obodnih brzina i opterećenja. Prikazana je promjena temperatura koja se javlja u području neposredno nakon izlaza iz zahvata ispitnih uzoraka tijekom rada za ukupni prijeđeni put u trajanju od 9 h, uz obrazloženje metode mjerenja temperature. Za pojedine radne točke prikazana je raspodjela dobivenih maksimalnih i srednjih temperatura prema opterećenju od 9 do 18 MPa te za područje obodnih brzina od 0,8 do 2 m/s. Prikazan je utjecaj maziva na povećanje opteretivosti i smanjenje faktora trenja primjenom maziva uz referentne vrijednosti temperatura i faktora trenja pri radu na suho.

show abstract

Section: Introductionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of contact pressure and sliding speed on the temperature and coefficient of friction in sliding contact between two PET samples

2016

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…The observed friction performance was considerably low. At the speed of 4 m/s and temperature lower than 150°, the carbon fiber reinforced PTFE has good tribological properties [94].…”

Section: Carbon Reinforced Ptfementioning

confidence: 99%

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Dhanumalayan

Joshi

2018

Adv Compos Hybrid Mater

308

143

View full text Add to dashboard Cite

High-performance commodity polymers are in demand due to low cost, durability, easy productivity, and recycling ability. This article comprises a survey on the performance properties of polytetrafluoroethylene (PTFE) fluoropolymer. It is a well-known choice for coatings, insulation, thermal sealing, lubrication, bearings, and clinical applications. PTFE was engineered in many forms as a function of loading nano and micro fillers for different purposes and the improved properties and performance were addressed by the researchers. Hence, we disclosed the various casting routes of PTFE which is feasible for reliable processing to serve in domestic and industrial applications.

show abstract

“…They also showed that applied load has more effect on the wear than the speed for composites. Several authors [17][18][19][20][21][22] observed that the friction coefficient of polymers and its composites rubbing against metals decreases with the increase in load though some other researchers have different views. Stuart [23] and other researchers [24][25][26] showed that value of friction coefficient increases with the increase in load.…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear of Polymer and Composites

Nuruzzaman¹,

Chowdhury²

2012

Composites and Their Properties

View full text Add to dashboard Cite

Tribological behaviours of carbon filled polytetrafluoroethylene (PTFE) dry journal bearings

Cited by 78 publications

References 17 publications

Influence of contact pressure and sliding speed on the temperature and coefficient of friction in sliding contact between two PET samples

Influence of contact pressure and sliding speed on the temperature and coefficient of friction in sliding contact between two PET samples

Performance properties and applications of polytetrafluoroethylene (PTFE)—a review

Friction and Wear of Polymer and Composites

Contact Info

Product

Resources

About