超弹性防火气凝通过微气泡工程辅助的双模板通过等级结构的超弹性防火气凝
Xiaoyang Yu1, Huan Li1, Ning Kang1
1State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 19, 2025
概括
这项研究使用双模板方法开发了超弹性,超轻的气凝,用于优质的绝热. 这些先进的气凝为可持续建筑应用提供了增强的阻燃性和自我修复能力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可持续工程 可持续工程
背景情况:
- 无机气凝表现出脆性和不良的加工能力.
- 有机气凝面临着高的生产成本和有限的弹性回收.
- 先进的热管理需要具有超弹性和超低导热性的材料.
研究的目的:
- 制造超轻,超弹性气凝,具有层级的多孔性.
- 为了提高隔热,阻燃性和机械性能.
- 为可持续应用开发可扩展和具有成本效益的生产方法.
主要方法:
- 采用双模板 (冰和泡) 策略进行分层的孔隙制造.
- 通过对宏观孔进行修改的"特萨里方法"来设计微气泡.
- 使用凝 (Ge) 和聚乙烯醇 (PVA) 结合盐的冷干燥.
主要成果:
- 实现了具有特殊弹性和超低导热率的超轻型气凝.
- 证明了阻燃性,减少了54%的峰值热释放率,并实现了自灭行为.
- 展示了快速的水辅助自我愈合,闭环可回收利用性和生物降解性.
结论:
- 开发的气凝为节能建筑中的先进热管理提供了有前途的解决方案.
- 双模板方法可以实现可扩展的生产,低原材料成本.
- 这些可持续的防火气凝适用于多功能应用.
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