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相关概念视频

Heating and Cooling Curves02:44

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When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
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相关实验视频

Updated: Jun 28, 2025

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
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热色液凝具有可调节的过渡行为,用于智能窗口.

Fuping Chen1, Xuewei Wu1, Guoqiang Lu1

  • 1State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.

ACS applied materials & interfaces
|April 9, 2024
PubMed
概括

使用聚基烯酸 (PHPA) 水凝的智能窗户可以显著减少建筑物的能源使用. 这些热色水凝有效地阻断热量,与标准窗户相比,将室内温度降低15°C.

关键词:
在LCSTT中,LCST是指LCST.基烯酸烯酸的氧烯酸.智能窗口 智能窗口 智能窗口温度调节的温度调节方法热色水凝是一种热色水凝.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 可持续建筑技术 可持续建筑技术
  • 聚合物化学 聚合物化学

背景情况:

  • 快速的城市化和摩天大楼建设导致了气候控制的高能耗.
  • 窗户是热量增加/损失的主要来源,对建筑物的能源使用贡献超过30%.
  • 智能窗户提供了一种解决方案,通过调节光和热传输来降低建筑能耗.

研究的目的:

  • 开发和研究用于智能窗口应用的聚基烯酸 (PHPA) 水凝.
  • 了解PHPA水凝在静态和动态条件下的热转换特性.
  • 评估PHPA水凝在降低室内温度和潜在节能方面的性能.

主要方法:

  • 通过光聚合,合成具有可控制较低临界溶液温度 (LCST) 的PHPA水凝.
  • 在静态和动态 (变化加热/冷却速度) 条件下的过渡温度和速率的研究.
  • 使用充满PHPA水凝的双层玻璃窗进行太阳辐射实验.

主要成果:

  • PHPA水凝显示可控制的LCST,这对于智能窗口的功能至关重要.
  • 由于分子链滞后,PHPA水凝的动态过渡温度随着加热速度的增加而增加.
  • 使用PHPA水凝的窗户在太阳辐射下保持室内温度比普通玻璃窗低15°C.

结论:

  • 对于智能窗户,PHPA水凝显示出出色的热反应和高辐射阻断效率.
  • 可调节的过渡温度和快速的光学响应使PHPA水凝成为节能建筑的有希望的材料.
  • 这项研究证实了PHPA水凝在降低空调能耗方面的巨大潜力.