Lehmann, D. ; Hupfer, B. ; Lappan, U. ; Geißler, U. ; Reinhardt, G. ; Kunze, K.
Verwertung von PTFE-Glasfaser-Compound-Abfällen - Ergebnisse einer Wertstoffentwicklung

Glass fibre reinforced PTFE compounds (PTFE/GF) are manufactured as semi-finished products and processed by machining to appropriate products. In contrast to non-modified PTFE waste the PTFE/GF waste of machining is not recyclable and is disposed. This contribution is dealing with a process of PTFE/GF recycling, and first results are presented, in which PTFE/GF waste is processed to useful material. The first step is a decomposition of PTFE in PTFE/GF waste by irradiation to produce powders with glass fibre content. In a subsequent compounding with PA-6 chemically bonded PTFE-PA-6 materials (with glass content) are formed. In tribological tests these compounds show nearly the same behaviour like products manufactured with pure PTFE. The chemically bonded PTFE-PA materials show a very good friction behaviour. A special feature is the excellent wear resistance of such materials compared to physical mixtures.

Quelle
Materialwissenschaft u. Werkstofftechnik 35

Seiten
677-682

DOI
http://dx.doi.org/10.1002/mawe.200400785

Erschienen am
December 2004