Tribological performance of PTFE-ATSP and PTFE-Ekonol polymer blends aimed for oil-less engineering applications

This study examines the tribological performance of an advanced high-performance polymer (HPP), namely aromatic thermosetting copolyester (ATSP), and poly-hydroxybenzoic acid polymer or Ekonol® as additives for polytetrafluoroethylene (PTFE), under unlubricated conditions from room temperature to 300 ◦C. Compared to PTFE-Ekonol composites, PTFE-ATSP blends showed 50% reduction in the wear rate at all tested temperaturas and higher wear resistance at different sliding speeds, partially attributed to its viscoelastic stability or higher mechanical strength. Also, a fluoride-rich lubricating transfer film was formed on the metallic counter Surface when tested against PTFE-ATSP, and this film is temperature-dependent. PTFE-ATSP blends are an attractive solution for oil-less applications in the temperature range of 25–300 ◦C.

• Autores: Escobar Nuñez, Emerson; Bashandeh, Kian; Tsigkis, Vasilis; Rahman, Md Saifur; Polycarpou, Andreas A.
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2023
• Institución: Universidad Autónoma de Occidente
• Repositorio: RED: Repositorio Educativo Digital UAO
• Idioma: eng
• OAI Identifier: oai:red.uao.edu.co:10614/15843
• Acceso en línea: https://hdl.handle.net/10614/15843; https://doi.org/10.1016/j.triboint.2023.108842 Received 5 May 2023; Received in revised form 8 J; https://red.uao.edu.co/
• Palabra clave: ATSP; PTFE; Ekonol; High performance polymers; Transfer films
• Rights: closedAccess
• License: Derechos reservados - Elsevier, 2023