Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers
Polymer composites have been widely used as damping materials in various applications due to the ability of reducing the vibrations. However, the environmental and surrounding thermal exposure towards polymer composites have affected their mechanical properties and lifecycle. Therefore, this paper p...
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doaj-da54de90bbd94f2fa3294648c73f5fa42021-09-09T13:50:55ZengMDPI AGMaterials1996-19442021-08-01144874487410.3390/ma14174874Loss Factor Behavior of Thermally Aged Magnetorheological ElastomersSiti Aishah Abdul Aziz0Saiful Amri Mazlan1Ubaidillah Ubaidillah2Norzilawati Mohamad3Michal Sedlacik4Nur Azmah Nordin5Nurhazimah Nazmi6Engineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, MalaysiaEngineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, MalaysiaDepartment of Mechanical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Surakarta 57126, IndonesiaFaculty of Engineering, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, MalaysiaCentre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 760 01 Zlín, Czech RepublicEngineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, MalaysiaEngineering Materials and Structures (eMast) iKohza, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, MalaysiaPolymer composites have been widely used as damping materials in various applications due to the ability of reducing the vibrations. However, the environmental and surrounding thermal exposure towards polymer composites have affected their mechanical properties and lifecycle. Therefore, this paper presents the effect of material-temperature dependence on the loss factor and phase shift angle characteristics. Two types of unageing and aging silicone-rubber-based magnetorheological elastomer (SR-MRE) with different concentrations of carbonyl iron particles (CIPs), 30 and 60 wt%, are utilized in this study. The morphological, magnetic, and rheological properties related to the loss factor and phase shift angle are characterized using a low-vacuum scanning electron microscopy, and vibrating sample magnetometer and rheometer, respectively. The morphological analysis of SR-MRE consisting of 30 wt% CIPs revealed a smoother surface area when compared to 60 wt% CIPs after thermal aging due to the improvement of CIPs dispersion in the presence of heat. Nevertheless, the rheological analysis demonstrated inimitable rheological properties due to different in-rubber structures, shear deformation condition, as well as the influence of magnetic field. No significant changes of loss factor occurred at a low CIPs concentration, whilst the loss factor increased at a higher CIPs concentration. On that basis, it has been determined that the proposed changes of the polymer chain network due to the long-term temperature exposure of different concentrations of CIPs might explain the unique rheological properties of the unaged and aged SR-MRE.https://www.mdpi.com/1996-1944/14/17/4874magnetorheological elastomermaterial elasticityloss factordamping propertiesthermal agingphase shift angle |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Siti Aishah Abdul Aziz Saiful Amri Mazlan Ubaidillah Ubaidillah Norzilawati Mohamad Michal Sedlacik Nur Azmah Nordin Nurhazimah Nazmi |
spellingShingle |
Siti Aishah Abdul Aziz Saiful Amri Mazlan Ubaidillah Ubaidillah Norzilawati Mohamad Michal Sedlacik Nur Azmah Nordin Nurhazimah Nazmi Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers Materials magnetorheological elastomer material elasticity loss factor damping properties thermal aging phase shift angle |
author_facet |
Siti Aishah Abdul Aziz Saiful Amri Mazlan Ubaidillah Ubaidillah Norzilawati Mohamad Michal Sedlacik Nur Azmah Nordin Nurhazimah Nazmi |
author_sort |
Siti Aishah Abdul Aziz |
title |
Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers |
title_short |
Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers |
title_full |
Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers |
title_fullStr |
Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers |
title_full_unstemmed |
Loss Factor Behavior of Thermally Aged Magnetorheological Elastomers |
title_sort |
loss factor behavior of thermally aged magnetorheological elastomers |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-08-01 |
description |
Polymer composites have been widely used as damping materials in various applications due to the ability of reducing the vibrations. However, the environmental and surrounding thermal exposure towards polymer composites have affected their mechanical properties and lifecycle. Therefore, this paper presents the effect of material-temperature dependence on the loss factor and phase shift angle characteristics. Two types of unageing and aging silicone-rubber-based magnetorheological elastomer (SR-MRE) with different concentrations of carbonyl iron particles (CIPs), 30 and 60 wt%, are utilized in this study. The morphological, magnetic, and rheological properties related to the loss factor and phase shift angle are characterized using a low-vacuum scanning electron microscopy, and vibrating sample magnetometer and rheometer, respectively. The morphological analysis of SR-MRE consisting of 30 wt% CIPs revealed a smoother surface area when compared to 60 wt% CIPs after thermal aging due to the improvement of CIPs dispersion in the presence of heat. Nevertheless, the rheological analysis demonstrated inimitable rheological properties due to different in-rubber structures, shear deformation condition, as well as the influence of magnetic field. No significant changes of loss factor occurred at a low CIPs concentration, whilst the loss factor increased at a higher CIPs concentration. On that basis, it has been determined that the proposed changes of the polymer chain network due to the long-term temperature exposure of different concentrations of CIPs might explain the unique rheological properties of the unaged and aged SR-MRE. |
topic |
magnetorheological elastomer material elasticity loss factor damping properties thermal aging phase shift angle |
url |
https://www.mdpi.com/1996-1944/14/17/4874 |
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