Wear-Resistant Polymer Composites Based On Polytetrafluoroethylene And Layered Silicates


To improve interaction on the phase boundary of polymer composites, we used functional additives, mechanoactivation method, and ultrasound. In the case of the use of serpentine as a modifier of polytetrafluoroethylene (PTFE), the introduction of magnesium nanospinel (NS) as functional additive resulted in the increase of wear resistance of composite in 2500 times. Effect of ultrasonic irradiation on the composites comprising phlogopite was considered. IR data have shown that NS influences the intensification of the tribological processes. In sonicated composites the intensity of the IR spectra of oxidized fragments depends on the content of NS and correlates with the wear resistance.

[1] M. Alexandre and P. Dubois, Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials, Materials Science and Engineering R: Reports, 28, no. 1, 1–63, (2000).

[2] S. Sinha Ray and M. Okamoto, Polymer/layered silicate nanocomposites: A review from preparation to processing, Progress in Polymer Science (Oxford), 28, no. 11, 1539–1641, (2003).

[3] T. J. Pinnavaia, Intercalated clay catalysts, Science, 220, no. 4595, 365–371, (1983).

[4] Y. Kojima, A. Usuki, M. Kawasumi, A. Okada, T. Kurauchi, and O. Kamigaito, Synthesis of nylon 6 clay hybrid by montmorillonite intercalated with ε-caprolactam, Journal of Polymer Science, Part A: Polymer Chemistry, 31, no. 4, 983–986, (1993).

[5] K. Yano, A. Usuki, and A. Okada, Synthesis and properties of polyimide-clay hybrid films, Journal of Polymer Science, Part A: Polymer Chemistry, 35, no. 11, 2289–2294, (1997).

[6] V. A. Gerasin, F. N. Bakhov, N. D. Merekalova, Y. M. Korolev, H. R. Fischer, and E. M. Antipov, Structure of surfactant layers formed on Na+ montmorillonite and compatibility of the modified clay with polyolefins, Vysokomolekularnye Soedineniya. Ser.A Ser.B Ser.C - Kratkie Soobshcheniya, 47, no. 9, 1650– 1651, (2005).

[7] AS. Vorontsov and VA. Liopo, Avdeichik SV, Kozello AV: Aggregation processes of dispersed particles of polymeric matrices modifiers, Gorn. Mekhan. Mashinostr, 4, no. particles, 81–85, (2011).

[8] YeG. Avvakumov, (2009)., Gusev AA: Mechanical methods of activation in processing of natural and technogenic raw materials Novosibirsk: Geo, .

[9] K. Nakanishi, Infrared spectra and structure of organic compounds. Practical Guidance, Wiley, New York, 1965.