An enhancement of mechanical and rheological properties of magnetorheological elastomer with multiwall carbon nanotubes

Abstract

In this work, a new type of magnetorheological elastomer, which is reinforced by carbon nanotubes, is fabricated and its material properties are experimentally investigated. In order to achieve this goal, as a first step, different types of multiwall carbon nanotubes are incorporated into a series of natural rubber–based magnetorheological elastomers as additives. Several experimental instruments such as X-ray diffractometer, thermogravimetric analysis, and differential scanning calorimetry are utilized. From the test, several salient properties of the proposed magnetorheological elastomer are observed or/and characterized. The results indicate that the interaction between natural rubber–based magnetorheological elastomers and multiwall carbon nanotubes can provide significant improvement in mechanical and rheological properties. More specifically, it is observed that mechanical properties such as tensile strength are enhanced up to 11% by the functionalized multiwall carbon nanotube. It is also found that the field-dependent storage and loss moduli of the proposed magnetorheological elastomer samples are increased compared to magnetorheological elastomer without multiwall carbon nanotube. It is finally identified that magnetorheological efficiency, which indicates force controllability by the magnetic field, of the proposed magnetorheological elastomer samples is consistent with the increased operating frequency. Therefore, it is expected that the results of morphological, thermal, and rheological properties parallel to incorporation of multiwall carbon nanotubes into magnetorheological elastomers are effectively used for proper selection of magnetorheological elastomer applications.

Material Characterization of Magnetorheological Elastomers with Corroded Carbonyl Iron Particles: Morphological Images and Field-dependent Viscoelastic Properties

“…Additionally, another small diffraction peak at around 65.22° corresponded to (200) plane of Fe (JCPDS card No. 04-0850) was seen, which agreed well with the values reported by other researchers [25,26,27,28].…”

Dynamic Behavior of Sandwich Structures with Magnetorheological Elastomer: A Review

“…In terms of MR performance, MREs combined with COOH and OH-MWCNT outperformed pure MWCNT. Aziz et al [122] conducted mechanical, morphological, thermal, and rheological experiments on MWCNT reinforced with natural rubber-based MRE. The experiment findings show that adding CNT to MRE enhances tensile strength by up to 11% while lowering heat stability, owing to surface flaws in MWCNT.…”

The Effect of Graphite Additives on Magnetization, Resistivity and Electrical Conductivity of Magnetorheological Plastomer

“…More specifically, when the external magnetic field is applied, the rheological properties of MR materials can be quickly tuned or controlled, due to the formation of chain-like structures of particles in the field direction [ 8 ]. MR materials can be classified into different groups such as MR fluids (MRFs), MR elastomers (MREs), MR foams, MR greases (MRGs), MR gels, and MR plastomers (MRPs) [ 9 , 10 , 11 , 12 , 13 , 14 ].…”