Magnetic field induced thermal conductive networks in silicone rubber composites with a low fraction of hybrid filler

2015 ◽  
pp. 2615-2618
Author(s):  
Shengli Pang ◽  
Dongsheng Xie ◽  
Xiangqian Shen ◽  
Lin Zhu ◽  
Tiezheng Pan
Keyword(s):  
Magnetic Field ◽  
Silicone Rubber ◽  
Rubber Composites ◽  
Hybrid Filler

Preparation and Thermal Conductivity of Nickel Fiber (Powder)/Silicone Rubber Composites Induced by Magnetic Field

2014 ◽  
Vol 22 (5) ◽  
pp. 453-458
Author(s):  
Dongsheng Xie ◽  
Xianfeng Meng ◽  
Jie Ma ◽  
Lin Zhu ◽  
Xiangqian Shen
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Silicone Rubber ◽  
Rubber Composites

Thermal Conducting Silicone Rubber Composites Filled with Aligned Nickel Nanoparticles Induced by Magnetic Field

2014 ◽  
Vol 488-489 ◽  
pp. 40-43
Author(s):  
Jie Ma ◽  
Zhou Wang ◽  
Mao Xiang Jing ◽  
Xiang Qian Shen
Keyword(s):  
Magnetic Field ◽  
Thermal Diffusivity ◽  
Silicone Rubber ◽  
Nickel Nanoparticles ◽  
Relative Dielectric Constant ◽  
Laser Flash ◽  
Ni Nanoparticles ◽  
Rubber Composites ◽  
Conducting Networks ◽  
Thermal Conducting

Thermal conducting silicone rubber composites filled with aligned nickel (Ni) nanoparticles induced by magnetic field were prepared by the solution mixing process. The structure, thermal, dielectric and magnetic properties of the silicone rubber composites were investigated by optical microscopy, laser flash thermal diffusivity analyzer, LCR digital meter and vibrating sample magnetometer. The results show that with the induction of magnetic field, Ni nanoparticles aligned form thermal conducting networks resulting in increase of the thermal diffusivity and relative dielectric constant of the silicone rubber composites.

Modelling and experimental characterisation of a compressional adaptive magnetorheological elastomer isolator

2021 ◽  
pp. 107754632110253
Author(s):  
Emiliano Rustighi ◽  
Diego F Ledezma-Ramirez ◽  
Pablo E Tapia-Gonzalez ◽  
Neil Ferguson ◽  
Azrul Zakaria
Keyword(s):  
Magnetic Field ◽  
Silicone Rubber ◽  
Magnetic Interaction ◽  
Iron Particle ◽  
Material Model ◽  
Rubber Matrix ◽  
Magnetorheological Elastomer ◽  
Volume Percentage ◽  
Shock Absorbers ◽  
Percent Concentration

This article proposes a simple physical-based model to describe and predict the performance of axially compressed magnetorheological elastomer cylinders used as vibration and shock absorbers. The model describes the magnetorheological elastomer macroscopic stiffness changes because of an externally applied magnetic field from a microscopic composite cell of silicone rubber and carbonyl iron particle. Despite neglecting the material hyperelasticity, anisotropy and adjacent magnetic interaction, the model describes effectively the effect of the magnetic field on the macroscopic modulus of elasticity. The changes in the mechanical properties with the induced magnetic field are measured on samples of different particle concentration based on volume percentage, that is, 10 and 30 percent concentration of iron particles in a silicone rubber matrix. The manufacturing process of the samples is detailed, as well as the experimental validation of the effective stiffness change under a magnetic field in terms of transmissibility and mobility testing. However, the prediction seems to be limited by the linear elastic material model. Predictions and measurements are compared, showing that the model is capable of predicting the tunability of the dynamic/shock absorber and that the proposed devices have a possible application in the reduction of mechanical vibrations.

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