"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Investigation on the friction coefficient of the composite materials obtained from plastics wastes and cellulosic fibers

L. BALTES1,* , M. TIEREAN1, S. PATACHIA1

Affiliation

  1. “Transylvania” University of Brasov, Romania

Abstract

The samples studied in the present paper were obtained by melt mixing different density fractions separated from Municipal Solid Wastes Plastics [MSWP] coming from Urban, Brasov, Romania collected from the central part of Romania, (Brasov County), in September 2010 – used as polymeric matrix; cellulosic fibers Chitcel [CC], purchased from Shandong Textile Sci. and Tech. Co. Ltd, China – used as filler; Irganox 1076 (Ciba) as thermal stabilizer, and PO-g-MA (Sigma Aldrich) as compatibiliser. Virgin polyolefin/CC fibers composites were obtained in the same conditions. Because these composite materials can be used in applications requiring mechanical friction, this paper presents determination of static coefficient of friction on flat surfaces. The selection of polymeric composites from waste as materials for sliding components of machines and devices is a very important aim for tribologists as well as tribological behavior of non-polymer-on-polymer tribosystems. The best tribological combination confirmed practically is steel on polymer; therefore the tests were done in this combination. The testing machine is a high precision tribometer with prisms, including two plane semi couples, one fix and the other one mobile. The tribometer worked on the principle of the inclined plane. Humidity and temperature values during determinations were also recorded. The lowest friction coefficient was obtained for the polymer material obtained from municipal solid waste recycling (23.103%PP, 72.862%PE, 1.329%PS and 0.207%PA), 2%cellulosic fibers and 0.5% Irganox. The results have led us to propose the use of these materials for industrial applications in the FP7 project "Magnetic Sorting and Ultrasound Sensor Technologies for Production of High Purity Secondary Polyolefins from Waste"..

Keywords

Friction coefficient; Polyolefin composites; Tribology; Recycling.

Submitted at: March 25, 2013
Accepted at: July 11, 2013

Citation

L. BALTES, M. TIEREAN, S. PATACHIA, Investigation on the friction coefficient of the composite materials obtained from plastics wastes and cellulosic fibers, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 7-8, pp. 785-790 (2013)