Investigation on variable shear modulus of magnetorheological elastomer based on natural rubber due to change of fabrication design

2012 ◽  
Vol 53 (5) ◽  
pp. 992-1000 ◽  
Author(s):  
Ji-Hyun Yoon ◽  
In-Hyung Yang ◽  
Un-Chang Jeong ◽  
Kyung-Ho Chung ◽  
Jung-Youn Lee ◽  
...  
Keyword(s):  
Shear Modulus ◽  
Natural Rubber ◽  
Magnetorheological Elastomer ◽  
Variable Shear

Magnetic-field-dependent shear modulus of a magnetorheological elastomer based on natural rubber

2013 ◽  
Vol 62 (2) ◽  
pp. 220-228 ◽  
Author(s):  
In-Hyung Yang ◽  
Ji-Hyun Yoon ◽  
Jae-Eun Jeong ◽  
Un-Chang Jeong ◽  
Jin-Su Kim ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Shear Modulus ◽  
Natural Rubber ◽  
Magnetorheological Elastomer ◽  
Field Dependent

Curing and swelling kinetics of new magnetorheological elastomer based on natural rubber/waste natural rubber gloves composites

2018 ◽  
Vol 51 (7-8) ◽  
pp. 583-602
Author(s):  
Nabil Hayeemasae ◽  
Hanafi Ismail
Keyword(s):  
Natural Rubber ◽  
Material Properties ◽  
Swelling Kinetics ◽  
Curing Process ◽  
Magnetorheological Elastomer ◽  
Rubber Composites ◽  
Rubber Waste ◽  
New Type ◽  
Kinetics Of ◽  
Single Filler

This article proposes a new type of magnetorheological elastomer (MRE) based on natural rubber (NR) and waste natural rubber gloves (wNRg) blends. The material properties of the MRE samples were investigated with specific focus on the curing and swelling kinetics. Two different series were prepared; the first used carbonyl iron (CI) as the single filler in the MRE, whereas the second hybridized CI with carbon black (CB) to prepare an MRE resistant to solvents. The results show that most properties depend strongly on the nature of both fillers. The higher thermal conductivity of the CI caused a substantial decrease in both the scorch and curing times and the activation energy in the curing process. Based on the diffusion study, a higher volume of fillers in the rubber composites resulted in a greater area of blockage and restricted the penetration of the solvent tested throughout the composites, irrespective of whether CI alone or in combination with CB was used in the composites.

The Study of Magnetorheological Elastomer Based on Natural Rubber (NR)/Polybutadiene Rubber (BR) Hybrid Matrix: Experimental and Numerical Simulation

2019 ◽  
Author(s):  
Xincheng Song ◽  
Wenju Wang ◽  
Fufeng Yang ◽  
Guoping Wang ◽  
Xiaoting Rui
Keyword(s):  
Numerical Simulation ◽  
Natural Rubber ◽  
Smart Materials ◽  
Magnetic Particles ◽  
Mixing Time ◽  
Homogeneous System ◽  
Thermomechanical Analysis ◽  
Magnetorheological Elastomer ◽  
Hybrid Matrix ◽  
Polybutadiene Rubber

Abstract Magnetorheological elastomer (MRE) is a new kind of smart materials whose mechanical properties can be controlled under external magnetic field and it is mainly consist of matrix materials and magnetic particles. In this work, the natural rubber (NR)/polybutadiene rubber (BR) hybrid matrix based MRE were prepared and the compatibility of NR and BR were studied. The hybrid matrix was prepared by physical mixing method. The characterization results showed that the BR had excellent compatibility with NR. The measurement result using rheological showed that the MR effect can be increased to 44.19% by adding of BR. The dynamic thermomechanical analysis showed that the hybrid matrix formed a homogeneous system when the ratio of BR and NR is 1/9 and 3/7. The particles was mixed with matrix using physical technology. The process of mixing was analyzed by numerical simulation. The simulation result showed that the increase of diameter of particles would increase the temperature and velocity of matrix in mixing. The particles was distributed evenly at enough mixing time and the mixing time was decreased with the diameter of particles.

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