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对于聚氨磁性弹性体的粒子移动性和宏观磁体学效应

Rio Urano¹, Kaito Watanabe¹, Kejun Chen¹

¹Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan. tetsu@eng.niigata-u.ac.jp.

|May 23, 2024

概括

磁性弹性体中的交联密度和可塑剂度会影响颗粒的移动性和磁石学效应. 更高的交叉连接限制了颗粒的运动,而更高的塑化剂度则增强了它,影响了材料的特性.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
磁极地质学磁极地质学

背景情况:

聚氨磁性弹性体表现出基于其组成的调节性质.
了解粒子流动性对于优化磁石学效应至关重要.

研究的目的:

研究聚氨磁性弹性体中的粒子移动性和磁体学效应之间的关系.
确定交叉连接密度和可塑化剂度如何影响磁粒子运动和材料反应.

主要方法:

合成的聚氨磁性弹性体,具有不同的交联密度和可塑化剂度.
将碳酸铁颗粒纳入弹性体矩阵.
在0mT和500mT测量储存模块,并确定了临界磁场.

主要成果:

交叉连接密度的增加使存储模块在0mT上升,在500mT下降,同时增加了临界磁场.
增加的塑化剂度使存储模块在0mT下降,在500mT上增加,同时降低了关键磁场.
磁石学效应与0mT的存储模量和临界磁场相缩放,表明宏观弹性和微观粒子移动性之间的相关性.

结论:

交联密度和增塑剂度显著控制了聚氨磁性弹性体中的粒子移动性.
临界磁场作为微观粒子移动性的指标,与宏观弹性特性直接相关.

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