Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Tribology of Polymer Blends PBT + PTFE

Version 1 : Received: 10 January 2021 / Approved: 11 January 2021 / Online: 11 January 2021 (17:56:15 CET)

A peer-reviewed article of this Preprint also exists.

Georgescu, C.; Deleanu, L.; Chiper Titire, L.; Ceoromila, A.C. Tribology of Polymer Blends PBT + PTFE. Materials 2021, 14, 997. Georgescu, C.; Deleanu, L.; Chiper Titire, L.; Ceoromila, A.C. Tribology of Polymer Blends PBT + PTFE. Materials 2021, 14, 997.

Journal reference: Materials 2021, 14, 997
DOI: 10.3390/ma14040997

Abstract

This paper presents results on tribological characteristics for polymer blends made of polybutylene terephthalate (PBT) and polytetrafluoroethylene (PTFE). This blend is relatively new in research as PBT has restricted processability because of its processing temperature near the degradation one. Tests were done block-on-ring tribotester, in dry regime, the variables being the PTFE concentration (0%, 5%, 10% and 15%wt) and the sliding regime parameters (load: 1 N, 2.5 N and 5 N, the sliding speed: 0.25 m/s, 0.5 m/s and 0.75 m/s, and the sliding distance: 2500 m, 5000 m and 7500 m). Results are encouraging as PBT as neat polymer has very good tribological characteristics in terms of friction coefficient and wear rate. SEM investigation reveals a quite uniform dispersion of PTFE drops in the PBT matrix.

Subject Areas

Polybutylene terephthalate (PBT); polytetrafluoroethylene (PTFE); blend PBT + PTFE; block-on-ring test; friction coefficient; wear rate

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