Fabrication and characterization of magnetorheological elastomer with carbon black

Nayak, Biswajit; Dwivedy, Santosha K.; Murthy, K.S.R.K.

doi:10.1177/1045389x14535011

Cited by 56 publications

(49 citation statements)

References 17 publications

(31 reference statements)

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“…Apart from increasing the plasticity and fluidity of the matrix, the additives can average the distribution of the internal stress in the materials, which makes a stable material property for MR elastomer materials [1,58]. The other additives include but are not limited to carbon black [59][60][61], carbon nanotubes [62][63][64][65], silver nanowire [20], Rochelle salt [30], gamma-ferrite additives [66], etc.…”

Section: Elastic Matrices and Additivesmentioning

confidence: 99%

See 1 more Smart Citation

Magnetorheological Elastomers: Materials and Applications

Liu¹,

Xu²

2019

Smart and Functional Soft Materials

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Magnetorheological elastomers (MREs) are a type of soft magneto-active rubber-like material, whose physical or mechanical properties can be altered upon the application of a magnetic field. In general, MREs can be prepared by mixing micron-sized magnetic particles into nonmagnetic rubber-like matrices. In this chapter, the materials, the preparing methods, the analytical models, and the applications of MREs are reviewed. First, different kinds of magnetic particles and rubber-like matrices used to prepare MREs, as well as the preparing methods, will be introduced. Second, some examples of the microstructures, as well as the microstructure-based analytical models, of MREs will be shown. Moreover, the magnetic field-induced changes of the macroscopic physical or mechanical properties of MREs will be experimentally given. Third, the applications of MREs in engineering fields will be introduced and the promising applications of MREs will be forecasted. This chapter aims to bring the reader a first-meeting introduction for quickly knowing about MREs, instead of a very deep understanding of MREs.

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Section: Elastic Matrices and Additivesmentioning

confidence: 99%

“…Years later, Carlson and Jolly gave an introduction of magnetorheological devices [3]. By possessing variable physical 60,70,80, and 90% of carbonyl iron powder in weight fraction [25]. Right: stress-strain relationship of a silicone rubber-based MRE sample at various magnetic fields [94].…”

Section: Applicationsmentioning

confidence: 99%

Magnetorheological Elastomers: Materials and Applications

Liu¹,

Xu²

2019

Smart and Functional Soft Materials

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“…Thus, utilization of these carbon‐based fillers as additives for MR solids not only provides superior mechanical properties, but also allows for the control of properties of the MR solids by altering the strength of the magnetic field. Accordingly, carbon‐type additives have been used for all types of MR solids: MR elastomers, MR gels, MR plastomers, and MR greases …”

Section: Carbon Types and Othersmentioning

confidence: 99%

“…In another study, Nayak et al fabricated an isotropic silicone rubber‐based MR elastomer containing 7 wt% carbon black. Because of the addition of carbon black, the MR effect increased by 22%, and the shear storage modulus increased from 0.37 to 0.45 MPa under a magnetic field of 500 mT; however, the increase in the values was smaller than that reported by Chen et al The influence of carbon black on the properties of silicone rubber‐based MR elastomers, reported by Nayak et al, was lower because the elastomer was fabricated under isotropic conditions. Therefore, this shows that the MR effect also depends on the distribution (isotropic or anisotropic) of magnetic particles inside the rubber matrix.…”

Section: Carbon Types and Othersmentioning

confidence: 99%

Role of Additives in Enhancing the Rheological Properties of Magnetorheological Solids: A Review

et al. 2018

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During the last two decades, magnetorheological (MR) materials have attracted a significant amount of attention because of their tremendous potential for engineering applications. This review focuses on the role of various additives in enhancing the magnetic field-dependent rheological characteristics of solid and thixotropic matrice-based MR materials (hereafter referred to as MR solids). Typically, MR solids consist of solid or semi-solid matrices filled with magnetizable particles. However, additives need to be used to improve their performance such as the MR effect. This parameter is typically determined by the field-dependent dynamic modulus. Three different groups of additives would be introduced in the review namely plasticizers, carbon-and chromiumbased additives. Compared to particles in the common matrix without a softener, those in matrices with additives which act as matrix softeners will be aligned easier during curing. In fact, the interfaces bonding between matrixparticles would be improved that subsequently enhanced the magnetically induced viscoelastic properties of MRE. In this review, the influences of several additives on the MR effect of various MR solids including MR elastomers, MR greases, and MR gels, which are recognized as efficient smart materials for practical applications in various engineering fields, are surveyed and discussed. Figure 11. a) Storage modulus for different MR plastomers weight fractions and b) storage modulus for different particle sizes of MR plastomers containing embedded graphite. Reproduced with permission. [91]

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“…There are two types of MRE; isotropic and anisotropic MRE. Isotropic MRE is featured by the uniform distribution of the particles inside the matrix in all directions, while the anisotropic MRE has strictly aligned particles direction which can be determined for curing process by applying the external magnetic field [14,15]. Therefore, the anisotropic MRE can enhance the storage modulus, loss modulus and MR effect in a certain direction [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Curing Current on Stiffness and Damping Properties of Magnetorheological Elastomers

Hapipi¹,

Mazlan²,

Aziz³

et al. 2018

IJSTT

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In this study, the viscoelastic effects of the magnetic field strength imposed for curing process on the stiffness and damping properties of magnetorheological elastomers (MREs) are experimentally investigated. In order to observe the effect, three different samples of MRE are fabricated by imposing curing current of 0.1 A, 0.3 A and 0.5 A which is equivalent to the magnetic field of 70 mT, 309 mT, and 345 mT, respectively. All samples consist of 30% silicone rubber and 70% carbonyl iron particles (CIPs) by weight percentages. After observing the morphological images via SEM, the dynamic performances of these samples, such as storage modulus and loss factor are evaluated and compared as a function of the magnetic field intensity or oscillation frequency. It is shown that the sample cured at 0.5A exhibits the highest storage modulus in the frequency domain. In addition, MR effects of three samples are identified, and it is found that the sample cured at 0.5A shows the highest absolute and relative MR effect.

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Fabrication and characterization of magnetorheological elastomer with carbon black

Cited by 56 publications

References 17 publications

Magnetorheological Elastomers: Materials and Applications

Magnetorheological Elastomers: Materials and Applications

Role of Additives in Enhancing the Rheological Properties of Magnetorheological Solids: A Review

Effect of Curing Current on Stiffness and Damping Properties of Magnetorheological Elastomers

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