通过非热带碳纤维增强复合材料塑造热传输和温度分布
Flora Lebeda1,2, Martin Demleitner3, Annalena Pongratz3
1Department of Chemistry, Physical Chemistry I, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.
ACS omega
|September 23, 2024
概括
具有异型热特性的新型复合材料为电子系统提供了对热流的精确控制. 这使得有针对性的散热或阻塞成为可能,这对于应对电动汽车的热挑战至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 复合材料 复合材料 复合材料
背景情况:
- 车辆的电气化需要先进的热管理解决方案.
- 电子系统中的过热需要新的散热策略.
- 热性异型材料提供定向热传输能力.
研究的目的:
- 调查用于控制热传输的异型层级材料的使用.
- 为了证明在复合材料中量身定制热流的能力.
- 探索异构性方向对散热的影响.
主要方法:
- 在聚合物矩阵中用单向对齐的碳纤维制造层层材料.
- 温度梯度的应用,以评估异性热导.
- 热流的可视化使用红外 (IR) 热像.
- 组装异型层状磁盘成复合结构.
主要成果:
- 层层材料中的热传输是由它们的异构性质决定的.
- 复合材料由异型组件构成,可以精确控制宏观热流.
- 选择性热流引导是通过将异构相对于温度梯度进行定向来实现的.
- 影响热传输的关键因素包括异构性比,组件排列和定位.
结论:
- 开发了一种用于局部控制复合材料热流的新概念.
- 材料可以被设计为散热或阻断热传输.
- 拟议的方法可扩展到2D和3D复合结构,以实现多功能热管理.
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