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Dynamic Properties of Magnetorheological Elastomers Based on Iron Sand and Natural Rubber

机译：基于铁砂和天然橡胶的磁流变弹性体的动力学特性

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In this study, magnetorheological elastomers (MREs) based on iron sand and natural rubber were prepared. The Taguchi method was employed to investigate the effect of a number of factors, namely, the iron sand content, iron sand particle size, and applied magnetic field during curing on the loss tangent (tan ) and energy dissipated during cyclic loading. Tan was measured through dynamic mechanical analysis over a range of frequency (0.01-130 Hz), strain amplitude (0.1-4.5%), and temperature (-100 to 50 degrees C). The energy dissipated was measured with a universal tester under cyclic tensile loading. The data were then statistically analyzed to predict the optimal combination of factors, and finally, experiments were conducted for verification. It was found that the iron sand content had the greatest influence on tan when measured over a range of frequency, and the energy dissipated during hysteresis tests. However, none of the factors showed a significant influence on tan when measured over a range of strain amplitude. Furthermore, the iron sand content and magnetic field were also found to influence the width of the peak in tan as a function of the temperature. The morphological characteristics of the MREs were also examined with scanning electron microscopy. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41506.
机译：在这项研究中，制备了基于铁砂和天然橡胶的磁流变弹性体（MRE）。 Taguchi方法用于研究许多因素，即铁砂含量，铁砂粒度和固化过程中施加的磁场对循环载荷下的损耗角正切（tan）和能量消散的影响。通过动态机械分析，在频率（0.01-130 Hz），应变幅度（0.1-4.5％）和温度（-100至50摄氏度）的范围内测量Tan。用万能测试仪在循环拉伸载荷下测量耗散的能量。然后对数据进行统计分析以预测因素的最佳组合，最后进行实验进行验证。发现在一定频率范围内测量时，铁砂含量对棕褐色的影响最大，并且在磁滞测试过程中耗散了能量。但是，当在一定的应变幅度范围内测量时，没有一个因素显示出对tan的显着影响。此外，还发现铁砂含量和磁场会影响tan峰的宽度随温度的变化。还用扫描电子显微镜检查了MRE的形态特征。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41506。

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