粒子矩阵界面相互作用对基于电解铁颗粒的弹性体粘弹性质的影响
Nupur Rathod1, Dipal Patel2, Kinnari Parekh3
1Dr K C Patel Research & Development Centre, Charotar University of Science &Technology, CHARUSAT- campus, Changa, 388421, Gujarat, India.
Scientific reports
|September 30, 2025
概括
将油脂添加到磁修复性弹性体 (MREs) 中可以减少粒子-矩阵相互作用,但可以增强粒子-粒子相互作用. 这提高了结构的稳定性,并将磁石学效应提高了30%.
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
- 类风病学 类风病学 类风病学
背景情况:
- 磁性弹性体 (MRE) 是智能材料,其性能因磁场的影响而发生变化.
- 了解粒子-矩阵界面相互作用对于优化MRE性能至关重要.
- 作为添加剂的油脂可以修改这些接口特性.
研究的目的:
- 为了研究油脂添加剂对MRE中的粒子矩阵界面相互作用的影响.
- 分析改变的接口对粘弹性和磁体学 (MR) 效应的影响.
- 为了将接口变化与结构稳定性和性能相关联.
主要方法:
- 带有和没有油脂的MRE合成 (MRE25G和MRE25).
- 使用交叉链密度 (CLD) 测量和电子显微镜进行表征.
- 在不同磁场下进行风湿学测试 (储存模量G',损失模量G',临界应变幅度).
- 对磁化曲线,凝聚性能量和爬行恢复行为的分析.
主要成果:
- 添加油脂减少了粒子矩阵相互作用,降低了G'和G'的值.
- 在零磁场下,MRE25G的凝聚能和结构稳定性增加.
- 在MRE25G中,由于粒子与粒子相互作用的增加,磁观学效应 (MR) 增强了30%.
- 麦克斯韦粘度在MRE25G中较高,表明流动行为发生了变化.
结论:
- 油脂添加剂显著改变了MREs的界面动力学,减少了粒子-矩阵摩擦.
- 由于油脂增强了粒子与粒子的相互作用,从而提高了结构稳定性和更强的MR效应.
- 接口相互作用在零场属性中起着关键作用,并对MRE中的场诱导效应做出了重大贡献.
关键词:
交叉连接密度 交叉连接密度电解质是铁颗粒的电解质.接口互动 接口互动磁性粘性弹性磁性粘性弹性磁铁修复性弹性体 (MRE) 是一种磁铁修复性弹性体.磁力测量 (Magnetorheometry) 是一种用于测量磁场的方法.更多相关视频
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