高潜热和可回收的相变材料用于光热电转换
Xiaohui Zeng1, Silong Chen1, Yansheng Liao1
1State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
ACS applied materials & interfaces
|April 28, 2025
概括
研究人员通过将聚乙烯糖醇 (PEG) 与动态聚氨网络相结合,开发了高潜热和可回收相变材料 (RPCM). 这些材料具有可调节的性能,并为先进的热管理应用提供了出色的可回收性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 有机相变材料 (PCM) 在平衡可回收性和高潜热方面面临着挑战.
- 现有的PCM通常在网络组成,可回收性和热能储能能力之间进行权衡.
- 在先进的热管理中,开发具有高潜在热量和优良可回收性材料至关重要.
研究的目的:
- 开发高潜热和可回收的相变材料 (RPCM),以提高性能.
- 研究线性聚乙烯甘醇 (PEG) 多元仪和动态共价交联聚氨网络的集成.
- 探索开发的RPCM的潜热,可回收性,机械性能和光热能力的可调性.
主要方法:
- 使用半互穿透的聚合物网络结构合成的RPCM,包括线性PEG多元体和动态二硫化物交联聚氨.
- 通过变化的PEG重量分数和分子重量来表征潜热.
- 通过测量激活能量和评估机械性能 (应力和应变) 来评估可回收性.
- 纳入聚多巴胺颗粒以创建光热RPCM.
主要成果:
- 实现了可调节的潜热在54.7~145.0 J/g之间.
- 由于动态二硫化物键,证明了优良的可回收/可再加工性,激活能量在81.23125.84 kJ/mol之间.
- 获得可调节的机械性能 (应力:10.7214.04 MPa,应变:7.40266.22%),具有高的热可靠性和稳定性.
- 通过结合聚多巴胺颗粒,开发出高效的光热RPCM.
结论:
- 新型RPCM有效地克服了潜热和可回收性之间的权衡.
- 可调节性质和优良的可回收性使这些材料适合先进的热管理系统.
- 在热管理系统和光热电发生器中展示了潜在的应用,突出了其高效的热管理和光热转换能力.
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