核心调节的帕拉芬-奇托桑相变微囊用于恒温建筑
Biao Wen1, Linghao Tian1, Dongyun Wei1
1Tianjin Key Laboratory of Advanced Functional Porous Materials, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
Journal of colloid and interface science
|June 8, 2024
概括
在酸盐中微封装的相变材料 (PCM) 为建筑物提供稳定的热能存储. 这些微囊可以防止泄漏,提高建筑应用中的能源效率和热舒适度.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续能源 可持续能源
背景情况:
- 换相材料 (PCM) 对于热能存储至关重要,可节能和精确的热控制.
- 建筑物中的应用旨在提高舒适度和降低能源消耗,但PCM泄漏仍然是一个重大挑战.
- 开发稳定,微封装的PCM是克服这些局限性的关键.
研究的目的:
- 为了合成和表征新型相变材料 (PCM) 微囊,使用可控制的核心数量,使用和交联酸盐.
- 评估单核 (S-PCM) 和多核 (M-PCM) 微囊的热性能和稳定性.
- 评估结合这些微囊的石膏复合材料的温度调节性能.
主要方法:
- 在交叉连接的基托外中封装的基于的PCM的合成.
- 通过调整合成条件来制备单核 (S-PCM) 和多核 (M-PCM) 微囊.
- 用嵌入微囊的石膏复合材料块 (GSCM,GMCM) 的制造.
- 评估热性质 (隐性热) 和热调节效应.
主要成果:
- 成功合成了S-PCM和M-PCM,其潜在热量分别为61.4mJ/mg和50.1mJ/mg.
- 证明了出色的稳定性,并且没有从微囊中泄漏.
- 与纯石膏相比,石膏复合材料块 (GSCM) 的表面温度显著降低了5-10°C.
结论:
- 交叉链接的奇托桑微封装有效地防止了基于的PCM的泄漏.
- 开发的S-PCM和M-PCM显示出有前途的热能储能能力.
- 这些微封装PCM适用于建筑材料的热调节,在电子和冷链行业有潜在的应用.
更多相关视频
12:07Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
Published on: April 16, 2018
13.4K
08:59A Freeze-Thawing Method to Prepare Chitosan-Polyvinyl alcohol Hydrogels Without Crosslinking Agents and Diflunisal Release Studies
Published on: January 14, 2020
17.5K
相关概念视频
Membrane Fluidity
152.0K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
152.0K
Phase Transitions: Melting and Freezing
12.4K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
12.4K
