Time-dependent properties of newly developed multiscale UHMWPE composites

Shankar Vadivel, Hari (author), Al-Maqdasi, Zainab (author), Pupure, Liva (author), Joffe, Roberts (author), Kalin, Mitjan (author), Emami, Nazanin (author)

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 materialsʼ 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.

• Language: English
• Keywords: multiscale reinforcements, nanocomposite, creep, tensile strength, stiffness
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.11.2021
• Year: 2022
• Number of pages: 10 str.
• Numbering: Vol. 105, art. 107400
• PID: 20.500.12556/RUL-139441
• UDC: 620.1(045)
• ISSN on article: 0142-9418
• DOI: 10.1016/j.polymertesting.2021.107400
• COBISS.SI-ID: 85192195
• Publication date in RUL: 02.09.2022

Record is a part of a journal

• Title: Polymer testing
• Shortened title: Polym. test.
• Publisher: Elsevier
• ISSN: 0142-9418
• COBISS.SI-ID: 26155008

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.11.2021

Secondary language

• Language: Slovenian
• Keywords: večstopenjske ojačitve, nanokompoziti, lezenje, natezna trdnost, togost

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: Kempestiftelserna, Sweden

• Funder: EC - European Commission
• Funding programme: H2020
• Project number: 777810
• Name: MULTIFUNCTIONAL POLYMER COMPOSITES DOPED WITH NOVEL 2D NANOPARTICLES FOR ADVANCED APPLICATIONS
• Acronym: NANO2DAY