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A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer

Zisheng Liao, Mokarram Hossain Orcid Logo, Xiaohu Yao, Rukshan Navaratne, Gregory Chagnon

Polymer Testing, Volume: 86, Start page: 106478

Swansea University Author: Mokarram Hossain Orcid Logo

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Abstract

Silicone polymers have enormous applications, especially in the areas of biomedical engineering. Ecoflex, a commercially available room temperature cured silicone polymer, has attracted considerable attention due to its wide range of applications as medical-grade silicones and as matrix materials in...

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Published in: Polymer Testing
ISSN: 0142-9418
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53806
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spelling 2020-06-25T11:20:20.5169500 v2 53806 2020-03-10 A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer 140f4aa5c5ec18ec173c8542a7fddafd 0000-0002-4616-1104 Mokarram Hossain Mokarram Hossain true false 2020-03-10 GENG Silicone polymers have enormous applications, especially in the areas of biomedical engineering. Ecoflex, a commercially available room temperature cured silicone polymer, has attracted considerable attention due to its wide range of applications as medical-grade silicones and as matrix materials in producing nano-filled stretchable sensors and dielectric elastomers for soft robotics. In this contribution, we have conducted a wide range of experiments under thermo-mechanical loadings. These experiments consist of loading-unloading cyclic tests, single-step relaxation tests, Mullins effects tests at different strain rates and stretches, stress recovery tests at different rest time, etc. In order to assess the temperature influences on Ecoflex, a number of viscoelastic tests are performed in a thermal chamber with temperature ranging from -40°C to 140°C. Extensive experimental findings illustrate that Ecoflex experiences a significant stress softening in the first cycles and such a softening recovers gradually with respect to time. It also shows a significant amount of cyclic dissipations at various stretch levels as well as a considerable stress relaxation only for virgin samples. Cyclic dissipations and stress relaxation almost disappear for the case of pre-stretched samples. Furthermore, the material is more or less sensitive under a wide range of temperature differences. Journal Article Polymer Testing 86 106478 Elsevier BV 0142-9418 Ecoflex silicone rubber; Mullins effect; Stress recovery; Strain rate dependence; Temperature dependence 1 6 2020 2020-06-01 10.1016/j.polymertesting.2020.106478 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2020-06-25T11:20:20.5169500 2020-03-10T16:52:34.2830410 Zisheng Liao 1 Mokarram Hossain 0000-0002-4616-1104 2 Xiaohu Yao 3 Rukshan Navaratne 4 Gregory Chagnon 5 53806__16828__3810cb53a21f4074bf52ac917797dd9b.pdf liao2020(2).pdf 2020-03-10T16:55:53.2231520 Output 1616746 application/pdf Accepted Manuscript true 2021-03-10T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true eng
title A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
spellingShingle A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
Mokarram Hossain
title_short A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
title_full A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
title_fullStr A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
title_full_unstemmed A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
title_sort A comprehensive thermo-viscoelastic experimental investigation of Ecoflex polymer
author_id_str_mv 140f4aa5c5ec18ec173c8542a7fddafd
author_id_fullname_str_mv 140f4aa5c5ec18ec173c8542a7fddafd_***_Mokarram Hossain
author Mokarram Hossain
author2 Zisheng Liao
Mokarram Hossain
Xiaohu Yao
Rukshan Navaratne
Gregory Chagnon
format Journal article
container_title Polymer Testing
container_volume 86
container_start_page 106478
publishDate 2020
institution Swansea University
issn 0142-9418
doi_str_mv 10.1016/j.polymertesting.2020.106478
publisher Elsevier BV
document_store_str 1
active_str 0
description Silicone polymers have enormous applications, especially in the areas of biomedical engineering. Ecoflex, a commercially available room temperature cured silicone polymer, has attracted considerable attention due to its wide range of applications as medical-grade silicones and as matrix materials in producing nano-filled stretchable sensors and dielectric elastomers for soft robotics. In this contribution, we have conducted a wide range of experiments under thermo-mechanical loadings. These experiments consist of loading-unloading cyclic tests, single-step relaxation tests, Mullins effects tests at different strain rates and stretches, stress recovery tests at different rest time, etc. In order to assess the temperature influences on Ecoflex, a number of viscoelastic tests are performed in a thermal chamber with temperature ranging from -40°C to 140°C. Extensive experimental findings illustrate that Ecoflex experiences a significant stress softening in the first cycles and such a softening recovers gradually with respect to time. It also shows a significant amount of cyclic dissipations at various stretch levels as well as a considerable stress relaxation only for virgin samples. Cyclic dissipations and stress relaxation almost disappear for the case of pre-stretched samples. Furthermore, the material is more or less sensitive under a wide range of temperature differences.
published_date 2020-06-01T04:03:03Z
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score 10.926129