Download PDF by Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.): Advances in Polymer Friction and Wear

By Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.)

ISBN-10: 1461399424

ISBN-13: 9781461399421

ISBN-10: 1461399440

ISBN-13: 9781461399445

Polymers and polymer composites were increasinqly utilized in position of metals for varied industries; particularly, aerospace, automobile, bio-medical, computing device, electrophotography, fiber, and rubber tire. hence, an knowing of the interactions among polymers and among a polymer and a inflexible counterface can increase the functions of polymers lower than a number of environments. In meet­ ing this want, polymer tribology has developed to house friction, lubrication and put on of polymeric fabrics and to respond to a number of the difficulties with regards to polymer-polymer interactions or oolymer­ inflexible physique interactions. the aim of this primary overseas Symposium used to be to introduce advances in stories of polymer friction and put on, specially in Britain and the U.S.S.R. so much prior experiences of the Fifties have been motivated through the expansion of rubber tire industries. non-stop study in the course of the Sixties has broadened the bottom to incorporate different polymers akin to nylon, polyolefins, and poly tetra­ fluoroethylene, or PTFE. notwithstanding, a lot of this paintings used to be released in engineering or physics journals and barely in chemistry journals; most likely, the latter have continually thought of the paintings to be too utilized or too beside the point. no longer till fresh years have chemists began to realize phrases corresponding to tribo-chemistry or mechano­ chemistry and steadily detect an imperative position during this box of polymer tribology. hence, we have been hoping to deliver the expertise brand new in this SympOSium, particularly to nearly all of individuals, polymer chemists via training.

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Extra info for Advances in Polymer Friction and Wear

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1 10- 5 TOR U LL: VACUUM Lt.. W o u 3 Fig. 7. 6 TIME, MINUTES 9 12 Effect of the Irradiation by Fast Helium Atom on Friction of PTFE. 3 o ~a:: AIR Lt.. 1 w VACUUM o u o 3 6 9 12 TIME, MINUTES Fig. 8. Effect of the Irradiation by Fast Helium Atom on Friction of Polyethylene. {Data of E. A. Dukhovsky et al. (Ref. 0 ~ ,... 5 w o u OL-~ o Fig. 9. TEFLON - NYLON. 6 / __ ~ 2 __ ~~~-L 4 __~__~~__~~ 6 LOAO . (IlQ) 8 10 Friction of Nylon 6 on Teflon and Nylon 6 itself. v = 5 cm/sec. (Data of M. Watanabe (Ref.

PVF:o .... :! CI .... o~---~----~----~---~----~ o Fig. 3. 10 20 30 40 CRITIAL SURFACE TENSION, )'(: , dyne/cm(20·C) 50 Effect of Critial Surface Tension on Static Friction Coefficient of Polymers Against Steel (This data from NRL (Ref. f;1 5) (13) The authors claimed that with the above correction for F were able to obtain a better correlation between SIp and polymers studied by King and Tabor41. S they for Recently, Savkoor 3 found a thermodynamic relationship which could support the adhesion theory of friction: Wa = YL (1 + cos e), (14) where Wa is the work of adhesion; YL surface tension of a liquid; and e the contact angle.

H. LEE 50 . z o ;:: u a: Lt.. Lt.. 1 10- 5 TOR U LL: VACUUM Lt.. W o u 3 Fig. 7. 6 TIME, MINUTES 9 12 Effect of the Irradiation by Fast Helium Atom on Friction of PTFE. 3 o ~a:: AIR Lt.. 1 w VACUUM o u o 3 6 9 12 TIME, MINUTES Fig. 8. Effect of the Irradiation by Fast Helium Atom on Friction of Polyethylene. {Data of E. A. Dukhovsky et al. (Ref. 0 ~ ,... 5 w o u OL-~ o Fig. 9. TEFLON - NYLON. 6 / __ ~ 2 __ ~~~-L 4 __~__~~__~~ 6 LOAO . (IlQ) 8 10 Friction of Nylon 6 on Teflon and Nylon 6 itself.

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Advances in Polymer Friction and Wear by Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.)


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