剪切热量效应增强了用于固态冷却的聚合物复合材料中的弹性热量反应
Shixian Zhang1,2, Yuheng Fu1, Xinxing Nie1
1State Key Laboratory of Silicate Materials for Architectures, and School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China.
Nature communications
|August 2, 2024
概括
研究人员使用聚合物纳米复合材料增强了弹性热量冷却. 添加纳米填充剂增加了,导致高效固态制冷替代品的显著温度变化.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 可持续能源 可持续能源
背景情况:
- 弹性热量冷却为传统制冷提供了一个绿色的替代方案.
- 目前的弹性高热聚合物在和变形方面存在局限性,阻碍了性能.
研究的目的:
- 为了增强聚合物的弹性热效应.
- 开发高性能固态冷却材料和设备.
主要方法:
- 在elastocaloric聚合物中加入无机纳米填充剂.
- 研究通过分子链剪切增强贡献的机制.
- 一个大变形冷却系统的演示.
主要成果:
- 实现了 -18.0 K 的亚亚巴特温度变化.
- 记录了一个异热变化为187.4 J kg-1 K-1.1.
- 演示了56.3%的工作恢复效率的冷却系统.
结论:
- 纳米填充剂的添加显著改善了聚合物中的弹性热量性能.
- 与现有材料相比,开发的聚合物纳米复合材料显示出优越的热量反应.
- 这项研究为先进的弹性热聚合物和固态冷却原型铺平了道路.
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