Preparation and mechanical properties of the magnetorheological elastomer based on natural rubber/rosin glycerin hybrid matrix

Abstract

To improve the mechanical properties of the natural rubber based magnetorheological elastomers (MREs), rosin glycerin ester was added into the carrier matrix to enhance wettability and dispersibility of CI particles. Dynamic performance, including shear modulus, loss factor and viscosity of non-vulcanized matrix was measured by rheometer. In comparison to the natural rubber based MREs, the MR effect of these hybrid matrix MREs were higher and they can reach to 112% when the mass fraction of CI particles is only 60%. The contact angle was tested by drop shape analysis system (DSA) and it was found that the compatibility between the iron particles and matrix was improved. In combination of the microstructure and mechanical property analysis, a possible mechanism was proposed. Finally, the loss factor and tensile strength were studied.

Recent Progress on Magnetorheological Solids: Materials, Fabrication, Testing, and Applications

“…The supplements that have been applied in MREs include zinc oxide and stearic acid as activators, sulfenamide (CZ) as an accelerator, sulfur as a crosslinking agent, and mercaptobenzothiazole. [49,97,117,[158][159][160][161][162][163][164][165][166][167][168] The concentration of each supplement influences the quality of the matrix; for example, excessive plasticizer will lead the rubber to become soft, and, hence, unable to sustain a load. [98] Synthetic rubber-based MREs received more attention than the natural rubber MREs since they have higher resistance to oil, better aging, and weathering as well as resilience over a wide temperature range.…”

“…In addition, an increment in the plasticizer content influences the magneto-induced modulus and MR effect. The latest work considering particle movement during the pre-structure process was conducted by Ge et al [159] A rosin glycerin ester was introduced to the natural rubber to synthesize the MRE, which had a high MR effect and low loss factor. Due to the occurrence of the rosin glycerin ester with good adherence property, the viscosity of the rubber compound declined, and, therefore, the attraction of the iron particles in the matrix during the magnetization process was easy.…”

Performance of magnetorheological elastomer based green epoxidized natural rubber/sucrose acetate isobutyrate hybrid matrix

“…Having field-dependent modulus and damping properties, MREs have a broad range of possible applications such as vibration absorbers [2][3][4][5][6] sensing devices [7] and morphing structure [8]. The MR effect, which calculated from the storage modulus, is usually adopted to evaluate the MRE performance [9]. The hardness of the matrix has a significant influence on the MR effect [10].…”

“…Lokander and Stenberg [8] have found that utilization of plasticizer in MREs enhanced the shear storage modulus. The introduction of plasticizer to the elastomeric materials be able to act as a lubricant and hence can raise the mobility of magnetic particles in the matrix and at the same time modify magnetic particles properties [9]. Therefore, in this study, sucrose acetate isobutyrate (SAIB) is utilized in the MREs preparation process to alter the viscosity of the ENR.…”

Experimental Investigation on the Field-Dependent Properties of Magnetorheological Elastomer with Circular Honeycomb Holes

“…Simultaneously, it is well known that the compromise between mechanical properties and MR effects of existing MRE materials limits their engineering applications in which suitable quasi-static and dynamic mechanics performances are coordinately demanded. In order to develop high-performance MRE, many researchers and investigators improved formula, raw material selection, as well as manufacturing process (Hu et al, 2005;Böse, 2007;Chen et al, 2007;Li et al, 2008;Ge et al, 2013). However, a few academics have studied the approaches of altering exterior structure of MRE to improve the mechanical performance of MRE.…”