界面聚合法制备微胶囊相变材料及其调温机理的研究
发布时间：2018-01-18 14:46
本文关键词：界面聚合法制备微胶囊相变材料及其调温机理的研究 出处：《西安建筑科技大学》2010年硕士论文 论文类型：学位论文
【摘要】：近年来,随着建筑能耗的逐渐增加,人们对建筑节能的要求越来越高。而将相变材料应用到建筑围护构件中能够起到很好的节能效果。因此,如何将相变材料进行改性从而能够很好的应用于建筑围护构件中成为主要的研究方向。 本文首先介绍了制备微胶囊相变材料的各种方法,并从中选取了界面聚合法作为制备微胶囊相变材料的方法。 其次,选取了合适的囊芯和壁材分别制备出了单层壁材和复合壁材的微胶囊相变材料,对制备过程中的各项参数进行了研究。同时采用扫描电镜、红外光谱、DSC曲线和TG曲线对所制备出的微胶囊相变材料的性能进行了表征。另外,通过比较单层壁材和复合壁材微胶囊的性能,结果表明复合壁材微胶囊相变材料颗粒规则且不透明,包裹密实、囊芯相变石蜡不容易流出；其对相变石蜡发生固—液相变时阻滞作用更好,其可耐温度可达到150℃左右。 最后分析研究了微胶囊相变材料作用机理,以及通过评价微胶囊相变材料在夹芯复合墙体中的节能效果,结果表明在建筑围护构件中应用微胶囊相变材料具有很好的节能效果。
[Abstract]:In recent years, with the gradual increase of building energy consumption, people have higher and higher requirements for building energy saving. Therefore, the application of phase change materials in building envelope components can play a very good energy-saving effect. How to modify the phase change material is the main research direction. In this paper, various methods of preparing microencapsulated phase change materials are introduced, and the interfacial polymerization method is selected as the preparation method of microencapsulated phase change materials. Secondly, the microencapsulated phase change materials of single layer wall material and composite wall material were prepared by selecting suitable capsule core and wall material, and the parameters in the preparation process were studied. At the same time, scanning electron microscope and infrared spectrum were used. DSC curves and TG curves were used to characterize the properties of the microencapsulated phase change materials. In addition, the properties of single-layer wall materials and composite wall materials microcapsules were compared. The results showed that the microencapsulated phase change materials of composite wall materials were regular, opaque, tightly wrapped, and the phase change paraffin in the core was not easy to flow out. Its resistance to phase change paraffin (PCP) is better than that of phase change paraffin (PCP), and its temperature resistance can reach about 150 鈩，
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