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Article

Tribology of Polymer Blends PBT + PTFE

1
Department of Mechanical Engineering, Faculty of Engineering, “Dunarea de Jos” University of Galati, 800008 Galati, Romania
2
Department of Applied Sciences, Cross-Border Faculty, “Dunarea de Jos” University of Galati, 800008 Galati, Romania
*
Authors to whom correspondence should be addressed.
Academic Editor: Sergey Panin
Materials 2021, 14(4), 997; https://doi.org/10.3390/ma14040997
Received: 10 January 2021 / Revised: 13 February 2021 / Accepted: 16 February 2021 / Published: 20 February 2021
(This article belongs to the Special Issue Polymer Composites for Tribological Applications)
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, 2.5 and 5 N, the sliding speed: 0.25, 0.5 and 0.75 m/s, and the sliding distance: 2500, 5000 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. Either considered a composite or a blend, the mixture PBT + 15% PTFE exhibits a very good tribological behavior, the resulting material gathering both stable and low friction coefficient and a linear wear rate lower than each component when tested under the same conditions. View Full-Text
Keywords: polybutylene terephthalate (PBT); polytetrafluoroethylene (PTFE); blend PBT + PTFE; block-on-ring test; linear wear rate; friction coefficient polybutylene terephthalate (PBT); polytetrafluoroethylene (PTFE); blend PBT + PTFE; block-on-ring test; linear wear rate; friction coefficient
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MDPI and ACS Style

Georgescu, C.; Deleanu, L.; Chiper Titire, L.; Ceoromila, A.C. Tribology of Polymer Blends PBT + PTFE. Materials 2021, 14, 997. https://doi.org/10.3390/ma14040997

AMA Style

Georgescu C, Deleanu L, Chiper Titire L, Ceoromila AC. Tribology of Polymer Blends PBT + PTFE. Materials. 2021; 14(4):997. https://doi.org/10.3390/ma14040997

Chicago/Turabian Style

Georgescu, Constantin, Lorena Deleanu, Larisa Chiper Titire, and Alina C. Ceoromila 2021. "Tribology of Polymer Blends PBT + PTFE" Materials 14, no. 4: 997. https://doi.org/10.3390/ma14040997

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