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Effect of cryogenic aging and test-environment on the tribological and mechanical properties of PEEK composites
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement. CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Portugal.ORCID-id: 0000-0002-8025-5104
CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Portugal.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0001-8676-8819
2024 (engelsk)Inngår i: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 194, artikkel-id 109554Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study investigated mechanical and tribological properties of polyetheretherketone (PEEK) and PEEK composites, before and after aging in liquid nitrogen for 5 months. Tribological tests conducted at 25 °C and at − 100 °C in air and in high vacuum (10−5 Pa) environment revealed the effect of matrix modification, fillers, environment, temperature, and cryogenic aging on their performances. Cryogenic aging of the polymers resulted in cryogenic embrittlement and decrease of the fracture toughness by around 10% and increase of wear rate by at least 20%. Very low coefficient of friction (0.02) was achieved in cryogenic vacuum environment for carbon fiber, graphite, and PTFE reinforced PEEK. The results indicate the significant impact of aging, temperature and environment on PEEK and its composites.

sted, utgiver, år, opplag, sider
Elsevier Ltd , 2024. Vol. 194, artikkel-id 109554
Emneord [en]
Cryogenic aging, PEEK composite, Tribology, Vacuum
HSV kategori
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Maskinelement
Identifikatorer
URN: urn:nbn:se:ltu:diva-104894DOI: 10.1016/j.triboint.2024.109554Scopus ID: 2-s2.0-85187960018OAI: oai:DiVA.org:ltu-104894DiVA, id: diva2:1846945
Merknad

Validerad;2024;Nivå 2;2024-04-05 (marisr);

Full text license: CC BY

Tilgjengelig fra: 2024-03-26 Laget: 2024-03-26 Sist oppdatert: 2024-05-27bibliografisk kontrollert
Inngår i avhandling
1. Tribological and Mechanical Performance of Thermoplastic Composites: Effect of Cryogenic Aging and Testing-Environment
Åpne denne publikasjonen i ny fane eller vindu >>Tribological and Mechanical Performance of Thermoplastic Composites: Effect of Cryogenic Aging and Testing-Environment
2024 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Luleå: Luleå University of Technology, 2024
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Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
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urn:nbn:se:ltu:diva-105597 (URN)978-91-8048-589-0 (ISBN)978-91-8048-590-6 (ISBN)
Disputas
2024-09-03, E632, Luleå University of Technology, Luleå, 09:00 (engelsk)
Opponent
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Tilgjengelig fra: 2024-05-27 Laget: 2024-05-27 Sist oppdatert: 2024-06-18bibliografisk kontrollert

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Nikonovich, MaksimEmami, Nazanin

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