序列双对齐引入对六角化板块的协同效应,以获得优越的热性能
Yunxia Chen1, Zhiming Gao2, Simon A Hoo1
1Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32611, USA.
Advanced materials (Deerfield Beach, Fla.)
|March 11, 2024
概括
这项研究引入了一种新的顺序双对齐方法,有效地对齐2D血小板,显著提高复合材料的热导率,用于先进的热管理应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 复合材料 复合材料 复合材料
背景情况:
- 在复合材料中对准2D血小板是很困难的,因为它们具有复杂的方向自由.
- 现有的1D材料对齐方法对于2D血小板来说是不够的.
- 在聚合物复合材料中实现高导热性需要有效的填充剂对齐.
研究的目的:
- 开发一个连续的双对齐方法,用于平面对齐2D血小板.
- 为了研究剪切和磁力对血小板对齐的协同作用.
- 为了提高修改的六角化 (mhBN) /环氧复合材料的导热性.
主要方法:
- 使用挤出印刷诱导的剪切力进行初始血小板对齐.
- 采用旋转磁场来诱导一个力对,以进一步平面对齐.
- 在调整过程中,将血小板嵌入到承压支浴中.
主要成果:
- 顺序双对齐方法显著改善了2DmhBN血小板的平面对齐.
- 40重%的热导率mhBN/环氧复合材料比不对齐的复合材料增加了692%.
- 实现了5倍的协同效应,超过了单个对齐方法的综合影响.
- 与以前的记录相比,30%,40%和50%重量的mhBN复合材料的热导率值得到了改善.
结论:
- 顺序双对齐方法对于实现2D填料的高级平面对齐是有效的.
- 这种方法可以显著提高复合材料的导热率.
- 开发的方法适用于制造3D设备,如散热器,与对齐的导电填充物.
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