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Time-dependent properties of newly developed multiscale UHMWPE composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-6224-1473
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-5550-2962
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Institue of Structural Engineering and Reconstruction, Riga Technical University, LV 1658, Riga, Latvia.ORCID iD: 0000-0001-8050-2294
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-5210-4341
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2022 (English)In: Polymer testing, ISSN 0142-9418, E-ISSN 1873-2348, Vol. 105, article id 107400Article in journal (Refereed) Published
Abstract [en]

Ultra-high molecular-weight polyethylene (UHMWPE) composites reinforced with Graphene Oxide (GO), Nanodiamonds (ND), and Short Carbon Fibres (SCF) are characterised for their mechanical performance in tensile and short-term creep tests. A methodology to separate and analyse the materials’ viscoelastic (VE) and viscoplastic (VP) responses is applied and evaluated. The results show a clear dependence of the performance on size scale/morphology of the reinforcements. All composites show time-dependent VP responses that can be expressed by Zapas model and fit the experimental data with high accuracy. The analysed VE strains and creep compliance curves reveal the nonlinear stress-dependent VE behaviour of all composites at all tested creep stresses. Combining multiscale reinforcements results in an improvement that surpasses that of individual reinforcements. The results of this work offer valuable input for the design and selection of polymer-based materials in demanding applications where prolonged use under service conditions is critical to their performance.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 105, article id 107400
Keywords [en]
UHMWPE, Multiscale, Nanocomposite, Creep, Tensile, Stiffness
National Category
Composite Science and Engineering
Research subject
Machine Elements; Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-87818DOI: 10.1016/j.polymertesting.2021.107400ISI: 000724138000001Scopus ID: 2-s2.0-85118901220OAI: oai:DiVA.org:ltu-87818DiVA, id: diva2:1609280
Funder
The Kempe FoundationsEU, Horizon 2020
Note

Validerad;2021;Nivå 2;2021-11-24 (beamah)

Available from: 2021-11-08 Created: 2021-11-08 Last updated: 2023-09-04Bibliographically approved

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Vadivel, Hari ShankarAl-Maqdasi, ZainabPupure, LivaJoffe, RobertsEmami, Nazanin

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