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- Title
Einfluss einer chemischen Kopplung von strahlenmodifiziertem PTFE mit PA46 auf mechanische Eigenschaften und das Reib- und Verschleißverhalten.
- Authors
Kamga, Lionel Simo; Thanh-Duong Nguyen; Schmidt, Thomas; Gedan-Smolka, Michaela; Emrich, Stefan; Oehler, Manuel; Sauer, Bernd; Kopnarski, Michael
- Abstract
In dry-lubricated tribological systems, polytetrafluoroethylene (PTFE) or polyamide (PA) are often used as dry lubricants. PTFE is characterized by a low coefficient of friction and a high wear rate when slid - ing against steel and a high temperature resistance. In contrast to PTFE, PA has a higher coefficient of friction when sliding against steel. The radiation modification of PTFE in air generates functional groups (-COF and -COOH) and persistent perfluoroalkyl (peroxy) radicals, which, when chemically coupled with suitable polymers, lead to compounds with improved tribological properties. In this paper, the mechanical and tribological properties of PA46-PTFEcb (chemical bonded) that were kept by reactive extrusion were characterized. For this purpose, Blockon- ring tests were performed using hardened steel discs made of 16MnCr5 as counterparts.
- Publication
Tribologie und Schmierungstechnik, 2021, Vol 68, Issue 2, p28
- ISSN
0724-3472
- Publication type
Article
- DOI
10.24053/TuS-2021-0011