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Smart Materials Congress 2019 Nano Research and Applications
ISSN: 2471-9838 Page 48
August 01-02, 2019
Dublin, Ireland
Smart Materials and
Structures
8th International Conference on
Nano Res Appl 2019, Volume 05
Modification of structure and properties of
magnetorheological elastomer via heat treatment
Nur Azmah Nordin1, Alif Azizi Ayub1, Siti Aishah Abdul Aziz1, 2, Mumtaz Hana
Ahmad Khairi1,2, Saiful Amri Mazlan1, 2 and Hafizal Yahaya1
1Malaysia-Japan International Institute of Technology-Universiti Teknologi Malaysia, Malaysia
2Universiti Teknologi Malaysia, Malaysia
Modification of structure via heat treatment in
different temperatures is known to result in a change
of properties of Si-based magnetorheological elastomer
(MRE). In this research, three different temperatures
particularly 100, 125 and 150°Chave been applied toMRE
contained of 70 wt% CIP for 24 hours, individually and the
resultant rheological changes ofMREswere investigated.
It was found that the MRE treated with 125°C exhibit the
highest MR effect, about 88% respective to non-treated
MRE. Furthermore, the corresponding initial storage
modulus present the lowest, 0.284 MPa compared to
0.298 MPa of pure MRE indicating the improvement of
an MRE’s modulus elasticity. Meanwhile, at temperature
of 150°C, it can be seen that the MR effect of the MRE
started to drop up to 50%. However, the storage modulus
for all non-heat treated and heat-treated MREs increased
exponentially as the frequencies and currents increased,
respectively for both off- and on-state conditions. In fact,
the increment trend of storage modulus as a result of
frequency is followed by the increased of heat treatment
temperatures; 20% for 100°C, 27% and 32% for 125 and
150°C, respectively compared to non-heat treated MRE,
at 3A. The result shows that the heat treatment on the
MREs enhanced the inter-particles bonding between the
magnetic particles and rubber matrix that subsequently
improve the structure and rheological properties of the
MREs.