Mohamed Khaidir, Rahayu Emilia and Nordin, Nur Azmah and Mazlan, Saiful Amri and Ubaidillah, Ubaidillah and Abd Rahman, Hamimah and Marzuki, Ainaa Amirah and Abdul Wahab, Siti Aisyah (2024) Thermo-rheological improvement of magnetorheological foam with the addition of silica nanoparticles. Smart Materials and Structures, 33. pp. 1-14.
![[img]](http://eprints.uthm.edu.my/style/images/fileicons/text.png) |
Text
J17760_a20c10743dcbe83bfcf9e5fa8fdf7319.pdf Restricted to Registered users only Download (2MB) | Request a copy |
Abstract
Magnetorheological (MR) foam has become a potential soft robotic gripper-based material that can provide a better grasping force and handling objects due to its ability in varying stiffness in correspond to applied magnetic felds. However, MR foams are facing degradation issue that may reduce the storage modulus when often exposed to thermal exposure from the operating system of a device. Therefore, this study focuses on improving the storage modulus and simultaneously enhancing the thermal properties of MR foam. Hence, silica nanoparticles were introduced as an additive to achieve the improvement target. MR foams were embedded with different concentrations of silica nanoparticles from 0 to 5 wt.%, and the corresponding rheological properties was examined under different temperature conditions from 25 ◦C to 65 ◦C. The results revealed that increasing temperatures have reduced the storage modulus of MR foams, however, the embedded silica has countered the drawbacks by strengthening the interfacial interactions between CIP-polyurethane foam matrix. In addition, the morphological characteristics of MR foams also showed less debris or peel-off PU foam with silica nanoparticles. Besides, the silica nanoparticles have delayed the thermal degradation of MR foam for approximately 30 ◦C.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | magnetorheological foam, carbonyl iron particles, silica nanoparticles, rheological properties, thermal properties |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Mechanical and Manufacturing Engineering > FKMP |
| Depositing User: | Mr. Mohamad Zulkhibri Rahmad |
| Date Deposited: | 02 May 2025 08:34 |
| Last Modified: | 02 May 2025 08:35 |
| URI: | http://eprints.uthm.edu.my/id/eprint/12344 |
Actions (login required)
 |
View Item |