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高热缓冲和辐射冷却基于藻酸盐的Janus气凝使消防服装的多场景热管理成为可能
Shengnan Ouyang1, Qing Jiang2, Yuhang Wan2
1National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China.
International journal of biological macromolecules
|June 30, 2024
概括
这项研究介绍了一种新的生物基Janus型气凝用于消防服装. 该材料提供被动辐射冷却和热能储存,增强消防员的热舒适性和安全性.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 热管理 热管理
背景情况:
- 消防需要先进的防护装备,以应对极端的高温.
- 现有的用于消防员服装的热管理材料有限.
- 生物基材料为热舒适提供了一个可持续的替代方案.
研究的目的:
- 为消防员服装开发一种新的基于生物的双模式热管理材料.
- 将被动辐射冷却和热能储存集成到一个单一的材料系统中.
- 为了提高消防员在各种操作场景中的热舒适度和安全性.
主要方法:
- 使用藻酸盐,SiO2纳米颗粒和微封装@SiO2.2制造Janus型气凝.
- 集成被动辐射冷却和相变材料 (PCM) 层.
- 评估热性能,包括冷却能力,融热量和热绝缘.
主要成果:
- 詹纳斯型气凝在炎热的一天实现了11.5°C的冷却.
- @SiO2的高融度为127.5J/g,可以有效缓冲温度.
- 气凝证明了超低的热绝缘 (0.042 W/(m·K)) 和延迟燃烧时间在高热流下76.6s.
结论:
- 开发的Janus型气凝是一种有前途的生物基材料,用于先进的消防员服装.
- 双模式系统有效地结合了辐射冷却和热能储存.
- 这一创新为多场景热管理提供了一条途径,以加强消防员的保护.
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