Fabrication and properties of magnetorheological elastomers based on CR/ENR self-crosslinking blends

Wang, Yonghong; Zhang, Xinru; Oh, Jae‐Eung; Chung, Kyung Ho

doi:10.1088/0964-1726/24/9/095006

Cited by 42 publications

(53 citation statements)

References 47 publications

(51 reference statements)

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“…The latest research relating to the vulcanizing issue was undertaken by considering self-crosslinking between two different compounds. Wang et al (2015) fabricated new class MREs by blending polychloroprene rubber with epoxidized natural rubber, without curing agents that the FIGURE 1 | HPHT mechanism (Morin et al, 2002). so-called self-cross-linking MREs.…”

Section: Introductionmentioning

confidence: 99%

Swelling, Thermal, and Shear Properties of a Waste Tire Rubber Based Magnetorheological Elastomer

Ubaidillah

Purnomo

Ismail³

et al. 2019

Front. Mater.

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In this study, the achievement of revulcanization, thermal stability, and rheological behaviors of waste tire rubber (WTR), based magnetorheological elastomers (MREs), were evaluated to convince their applicability as one of smart material possessing the field-dependent tuning capability of material characteristics such as complex modulus. The cross-linking density of the MREs was assessed through the swelling test to ratify the degree of reclaiming. The behavior of MREs to the temperature enhancement was evaluated via thermogravimetric analysis and thermomechanical analysis. Meanwhile, the alteration of shear stress depending on the magnetic fields was investigated at both steady and oscillatory states, measured using a rheometer. It has been shown that the increment of shear stress is proportional to the increment of the magnetic field. More specifically, it has been found that the WTR based MRE can achieve the maximum static stress ranging from 9 to 13 kPa (at 656 mT) with a linear viscoelastic (LVE) region above 3% strain amplitude. In addition, from the oscillatory test it has been determined that the highest MR effect of 24.71% can be achieved, which directly indicates the augmentation of both storage and loss moduli under ramped frequency and strain. Finally, it has been shown that the highest degree of reclamation based on swelling test can be achieved up to 54%, confirming the occurrence of the crosslinking during the reclamation process.

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Section: Introductionmentioning

confidence: 99%

Swelling, Thermal, and Shear Properties of a Waste Tire Rubber Based Magnetorheological Elastomer

Ubaidillah

Purnomo

Ismail³

et al. 2019

Front. Mater.

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“…However, there are still some problems, especially with mechanical and damping properties, which limit their industrial application. Generally, MREs are fabricated with magnetic particles and elastomers; thus most works on improving the properties of MREs focus on these two aspects [12].…”

Section: Introductionmentioning

confidence: 99%

Reinforced, Extruded, Isotropic Magnetic Elastomer Composites: Fabrication and Properties

Masłowski

Miedzianowska

Strzelec

2019

Advances in Polymer Technology

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The study involves the development of isotropic magnetorheological elastomer composites (i-MREs) with improved mechanical properties, their preparations, and properties characterizations. The novelty of the research is the use of extrusion process in the preparation of composites containing two different fillers: carbonyl iron powder (CIP) as magnetic filler and carbon black (FEF, N550) as reinforcing one. So far, the process of extrusion has been used to prepare magnetic composites without filler that improve mechanical properties. It is worth mentioning that the polymer matrix (ethylene-octene copolymer, EOR) offers excellent performance in extrusion applications. In this research, two methods of magnetic composites preparation were reported: traditional, during two-roll mill, and a new one using extrusion process. It was found that the usage of new processing technology allowed forming more homogenous dispersion of particles in elastomer matrix and oriented polymer chains, resulting in an improved rheometric characteristic, increased crosslink density, and decrease of the storage modulus (Payne effect). Based on both static/dynamic mechanical properties and damping properties under the influence of compression stress, the positive influence of extrusion process on material characteristics was confirmed. Moreover, all composites proved very good magnetic properties and resistance to thermooxidative ageing.

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“…Thus, MR solids are considered the new smart materials; they are characterized by shear moduli and damping properties that can be changed by altering the external magnetic field during real‐time applications . Use of solid matrices is advantageous because particles will no longer experience the settling problems that particles in MR fluids are subjected to; in addition, no container is required to prevent any leakage of the MR fluid . We can divide MR solids into several types: MR elastomers, foams, plastomers, gels, and greases.…”

Section: Introductionmentioning

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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Fabrication and properties of magnetorheological elastomers based on CR/ENR self-crosslinking blends

Cited by 42 publications

References 47 publications

Swelling, Thermal, and Shear Properties of a Waste Tire Rubber Based Magnetorheological Elastomer

Swelling, Thermal, and Shear Properties of a Waste Tire Rubber Based Magnetorheological Elastomer

Reinforced, Extruded, Isotropic Magnetic Elastomer Composites: Fabrication and Properties

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

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