Time-dependent properties of newly developed multiscale UHMWPE composites

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

Abstract

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.

Keywords

ultra-high molecular-weight polyethylene;multiscale reinforcements;nanocomposite;creep;tensile strength;stiffness;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	620.1(045)
COBISS:	85192195
ISSN:	0142-9418
Views:	27
Downloads:	15
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	UHMWPE;večstopenjske ojačitve;nanokompoziti;lezenje;natezna trdnost;togost;
Type (COBISS):	Article
Pages:	str. 1-10
Issue:	ǂVol. ǂ105
Chronology:	Jan. 2022
DOI:	10.1016/j.polymertesting.2021.107400
ID:	16345642