The transient magnetorheological response of magnetorheological elastomer (MRE) is critical to the control system in its applications. Overlong magnetorheological response time will prolong the control time delay of whole application system, which will lead to the degradation of control accuracy and timeliness, or even bring unwanted results. Therefore, it is particularly important to improve the transient magnetorheological response property of MRE for enhancing control efficiency of system. To this end, this paper synthesized a kind of new magnetic filler particle, carbonyl iron powder (CIP)@FeNi, which possesses Fe–Ni nano-flakes on its surface. Vibrating sample magnetometer test results showed that CIP@FeNi possessed superior magnetization under low magnetic field when compared with CIP. By partially replacement of CIP with CIP@FeNi, new dimorphic MREs were prepared. The influence of CIP@FeNi content on both of the transient magnetorheological response and magnetorheological mechanical properties of MRE were experimentally studied. Results indicated that CIP@FeNi is efficacious for improving the response velocity of MRE. In the rise edge, characteristic response time shows obvious decrease trend with increasing content of CIP@FeNi. In addition, at CIP@FeNi content of 2 vol% and 4 vol%, the doped CIP@FeNi can also enhance the magnetorheological property of MRE. This study provides a novel and effective way to improve the transient magnetorheological response property of MRE, which is of great significance for improving the control efficiency of MRE devices.

磁流变弹性体（MRE）的瞬态磁流变响应对于控制系统的应用至关重要。过长的磁流变响应时间将延长整个应用系统的控制时间延迟，这将导致控制精度和及时性下降，甚至带来不良结果。因此，改善MRE的瞬态磁流变响应特性对提高系统控制效率尤为重要。为此目的，本文合成了一种新型的磁性填料颗粒，羰基铁粉（CIP）@FeNi，其表面具有Fe-Ni纳米薄片。振动样品磁力计测试结果表明，与CIP相比，CIP @ FeNi在低磁场下具有优异的磁化强度。通过用CIP @ FeNi部分替换CIP，制备了新的双态MRE。实验研究了CIP @ FeNi含量对MRE瞬态磁流变响应和磁流变力学性能的影响。结果表明，CIP @ FeNi可有效提高MRE的响应速度。在上升沿，随着CIP @ FeNi含量的增加，特征响应时间呈现出明显的下降趋势。另外，在CIP @ FeNi含量为2vol％和4vol％时，掺杂的CIP @ FeNi还可以增强MRE的磁流变性质。这项研究为改善MRE的瞬态磁流变响应特性提供了一种新颖有效的方法，对于提高MRE器件的控制效率具有重要意义。实验研究了CIP @ FeNi含量对MRE瞬态磁流变响应和磁流变力学性能的影响。结果表明，CIP @ FeNi可有效提高MRE的响应速度。在上升沿，随着CIP @ FeNi含量的增加，特征响应时间呈现出明显的下降趋势。另外，在CIP @ FeNi含量为2vol％和4vol％时，掺杂的CIP @ FeNi还可以增强MRE的磁流变性质。这项研究为改善MRE的瞬态磁流变响应特性提供了一种新颖有效的方法，对于提高MRE器件的控制效率具有重要意义。实验研究了CIP @ FeNi含量对MRE瞬态磁流变响应和磁流变力学性能的影响。结果表明，CIP @ FeNi可有效提高MRE的响应速度。在上升沿，随着CIP @ FeNi含量的增加，特征响应时间呈现出明显的下降趋势。另外，在CIP @ FeNi含量为2vol％和4vol％时，掺杂的CIP @ FeNi还可以增强MRE的磁流变性质。这项研究为改善MRE的瞬态磁流变响应特性提供了一种新颖有效的方法，对于提高MRE器件的控制效率具有重要意义。在上升沿，随着CIP @ FeNi含量的增加，特征响应时间呈现出明显的下降趋势。另外，在CIP @ FeNi含量为2vol％和4vol％时，掺杂的CIP @ FeNi还可以增强MRE的磁流变性质。这项研究为改善MRE的瞬态磁流变响应特性提供了一种新颖有效的方法，对于提高MRE器件的控制效率具有重要意义。在上升沿，随着CIP @ FeNi含量的增加，特征响应时间呈现出明显的下降趋势。另外，在CIP @ FeNi含量为2vol％和4vol％时，掺杂的CIP @ FeNi还可以增强MRE的磁流变性质。这项研究为改善MRE的瞬态磁流变响应特性提供了一种新颖有效的方法，对于提高MRE器件的控制效率具有重要意义。