增强多功能相变材料的导热性:从随机填充器到粘性系统中的定向网络
Wanwan Li1, Tong Yang1, Jiaxin Shi1
1School of Physics and New Energy & School of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China.
iScience
|December 4, 2025
概括
研究人员开发了一种新型复合材料,以改善高粘度相变材料的热传递. 这一策略创造了连续的热通道,提高了热导率,以获得更好的储能和热管理应用.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 在粘性多功能相变材料 (MPCMs) 中提高导热性是很困难的,因为填充剂分散性差,路径不连续.
- 传统方法在高粘度系统中难以浸,限制了热增强.
研究的目的:
- 在高粘度能源材料中构建面向导热网络的可通用策略.
- 克服接口问题和粘度限制,以改善热管理.
主要方法:
- 采用了一种序列组装策略,重新配置了高粘度烯块共聚合物 (OBC) 系统的微结构.
- 一个分层 (PA@CA) /OBC复合体被构建,以创建完整的,面向的导热网络.
主要成果:
- 优化的复合材料实现了>10 W m-1 K-1的平面内导热率.
- 证明了增强的垂直导电性和增加的辐射导电性从5.36到12.64W m-1 K-1 .
- 该复合材料作为离子电池的异构相变热管理器,在3C放电时将峰值温度降低16.3°C.
结论:
- 该研究解决了MPCM中粘度有限的热增强的挑战.
- 开发的战略为先进的热管理和储能解决方案提供了途径.
- 层次化的复合材料设计使高粘度能源材料的有针对性的热管理成为可能.
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