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

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

Polymers and polymer composites were increasinqly utilized in position of metals for numerous industries; specifically, aerospace, car, bio-medical, laptop, electrophotography, fiber, and rubber tire. therefore, an figuring out of the interactions among polymers and among a polymer and a inflexible counterface can increase the purposes of polymers below a number of environments. In meet­ ing this desire, polymer tribology has developed to accommodate friction, lubrication and put on of polymeric fabrics and to reply to the various difficulties concerning polymer-polymer interactions or oolymer­ inflexible physique interactions. the aim of this primary foreign Symposium used to be to introduce advances in stories of polymer friction and put on, particularly in Britain and the U.S.S.R. so much prior experiences of the Fifties have been prompted by way of the expansion of rubber tire industries. non-stop examine in the course of the Sixties has broadened the bottom to incorporate different polymers corresponding to nylon, polyolefins, and poly tetra­ fluoroethylene, or PTFE. although, a lot of this paintings was once released in engineering or physics journals and infrequently in chemistry journals; possibly, the latter have continuously thought of the paintings to be too utilized or too beside the point. no longer until eventually fresh years have chemists began to notice phrases resembling tribo-chemistry or mechano­ chemistry and progressively detect an vital function during this box of polymer tribology. therefore, we have been hoping to carry the know-how brand new in this SympOSium, specifically to nearly all of contributors, polymer chemists via training.

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G. V. Vinogradov, N. S. Nametkin and M. I. Nosso~ Wear, 8. 93, (1965) . A. A. Koutkov and D. Tabor, Tribology, 1, 163 (1970). vrscussrON 29 DISCUSSION OF PAPER BY D. TABOR L. H. Lee (Xerox Corporation): As the Chairman of the Symposium, I would like to thank Dr. Tabor for this excellent lecture on polymer tribology. During the past twenty years, Drs. Tabor and Bowden, from the Cambridge University, have published important papers in elucidating mechanisms of polymer friction and wear. This plenary lecture, in part, is the manifestation of the balance between theoretical and experimental approaches taken by Dr.

L. Johnson, K. Kendall and A. D. Roberts, Proc. Roy. Soc. (London) A 324, 301 (1971). K. A. Grosch, Proc. Roy. Soc. (London) A 274, 21 (1963). A. Scha11 amach, private communication. - A. Schallamach, Rubber Chem. , 41, 209 (1968). G. M. Bartenev, Treniye i Iznashivaniye Polimerov, (1973). D. F. Moore, The Friction and Lubrication of Elastomers, Pergamon Press, Oxford (1972). D. F. Moore and W. Geyer, Wear, 22, 113 (1973). A. Schallamach, Wear, 6, 375 (19~. G. M. Bartenev, Doklad-Akad. Nauk SSSR, 96, 1161 (1954).

La). The adhesion component Fa can be determined according to the difference F - Fd and is proportional to b 2 (Fig. lb). Another set of results on the ratios of the two components (Table 1) were obtained by Kuritsyna and Hei sner 19. , LL - 40 UJ ~ ~ z o 6 ~ 20 8 4 Fig. la. Relation of the Deformation Component of the Friction Force to the Width of Friction Path. I. PTFE; 2. Polycaprolactam; 3. Polyethylene; 4. Polyamide-b-68 - at 20°C, --- at 70°C. 48r----------r----------r----------, co ~ 32 UJ ~ o LL Z o t ~ 16 2 Fig.

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