-
摘要：近年来，虽然我国建筑规模迅速扩大。但遗憾的是，占全社会能耗20%以上的北方，绝大部分还是采用火力发电和燃煤锅炉，这给环境带来了严重的污染。所以利用微胶囊技术包覆相变材料制得微胶囊相变材料，能很好地解决诸多问题：如当相变材料为液态时具有流动性，不易储存，易污染环境；传热效率慢等，引起人们地广泛关注，成为人们研究的热点。
- 上一篇：北极区域极射赤平投影比的较研究
- 下一篇：Lorenz系统的控制研究
本实验采用原位聚合法，选用壁材为脲醛树脂，芯材为价廉易得的十二醇相变材料，乳化剂为OP-10，分散乳化剂为SMA树脂，合成了微胶囊相变材料。通过改变芯材与壁材的质量比（2:1、3:1、4:1）的实验；改变尿素和三聚氰胺的摩尔比（4:0、3:1、2:2、1:3、0:4）的实验；改变NaCl的质量（分别取芯材的4%、5%、6%）进行实验。同时利用傅立叶变换红外/拉曼光谱仪、扫描电镜对样品性能进行分析和表征。37797
毕业论文关键词：相变材料；微胶囊；原位聚合法；脲醛树脂；十二醇
Influence of various factors on the micro-encapsulated phase change material
Abstract: In recent years，although the scale of China's rapidly expanding construction. Unfortunately，accounting for more than 20% of energy consumption in the north society，the vast majority still use thermal power and coal-fired boilers，which caused serious environmental pollution. So the use of microencapsulation technology covering the phase change material prepared microencapsulated phase change materials，can solve many problems： a fluidity as when the phase change material is liquid，easy to store，easy to pollute the environment；and slow heat transfer efficiency，causing people to attention，become a research focus.
In this study，in-situ polymerization，the choice of wall material is urea-formaldehyde resin，the core material is inexpensive and readily available dodecanol phase change material， emulsifier OP-10，dispersing emulsifier SMA resin，synthetic micro-encapsulated phase change material. By changing the quality of the core material and wall material ratio (2:1，3:1，4:1) test；Changing the molar ratio of urea and melamine (4:0，3: 1，2:2，1:3，0:4) experiments；Change the quality of NaCl (4% were taken of the core material，5%，6%) experiment. While using Fourier transform infrared / Raman spectroscopy，scanning electron microscopy sample performance analysis and characterization.
Keywords: Phase change materials；Microcapsules；Situ polymerization；Urea-formaldehyde resin；Dodecanol
目录
摘要 ii
Abstract ii
目录 iv
1 绪论 1
1.1 选题背景及意义 1
1.2 相变材料 1
1.2.1 概述 1
1.2.2 相变材料的分类[38] 2
1.2.3 相变材料的选择 2
1.3 微胶囊技术的发展 3
1.3.1 概述 3
1.3.2 选择芯材和壁材[1] 3
1.3.3 制备微胶囊的常见方法 4
1.4 微胶囊相变材料的研究进展 5
1.4.1 国外研究进展 5
1.4.2 国内研究进展 5
1.5 本课题主要研究内容 5
1.6 实验方案 6
1.7 实验方法 6
2 十二醇/脲醛微胶囊相变材料的制备 6
2.1 引言[1] 6
2.2 微胶囊相变材料的制备原料及方法的选择 6