一种可塑造的基于木材的相变材料,具有增强的机械性能和热效率,用于智能建筑
Ya Zhou1, Yingfeng Zuo1, Yuhang Ma1
1School of Materials and Energy, Central South University of Forestry and Technology, Changsha, Hunan, 410004, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 25, 2025
概括
一种基于木材的新型形态稳定相变复合材料 (DWTP) 提供了卓越的热能储存和机械强度. 这种可持续材料可以防止泄漏,并在50个周期内保持性能,从而推进智能建筑的热管理.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
- 智能建筑智能建筑
背景情况:
- 固体-液体相变材料 (PCM) 对于智能建筑中的热管理至关重要.
- 现有的PCM面临诸如液体泄漏和机械完整性差等挑战.
- 开发强大高效的PCM对于节能至关重要.
研究的目的:
- 开发一种具有增强热和机械性能的新型木形稳定相变复合材料 (DWTP).
- 解决传统PCM的局限性,特别是泄漏和机械降解.
- 评估用于热管理应用的DWTP的性能.
主要方法:
- 通过聚乙烯糖醇的自组装和现场矿化来制造DWTP.
- 通过键对多尺度网络结构的描述.
- 评估热性能 (热量),机械强度,热稳定性和循环性能.
- 在户外热管理测试中进行评估.
主要成果:
- 该DWTP表现出94.73Jg-1的高度和134.42MPa的特殊抗拉强度.
- 该材料表现出了显著的承载能力 (110倍重量),在相位过渡温度以上没有变形或泄漏.
- 优良的热稳定性,在50个热冷周期后97.3%的性能保留.
- 户外测试显示,在50°C环境温度下,环境下温度的最大降低为14.1°C.
结论:
- 开发的DWTP为先进的热能存储提供了有前途的解决方案,具有卓越的机械稳定性和防泄漏.
- 这种生物质衍生材料代表了建筑物可持续热管理解决方案的重大进展.
- 由于DWTP的高性能和耐用性,它被认为是智能环境中节能下一代材料.
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