光致变色储能材料的复合及性能研究

发布时间：2018-02-16 14:29

本文关键词： 相变储能光致变色微胶囊涂层　出处：《天津工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：为了研发光致变色及储能功能的材料,本论文采用原位聚合法,以密胺树脂为壁材,分别包覆固体石蜡、复配石蜡、溶有变色材料的复配石蜡制备微胶囊,然后将光致变色储能微胶囊应用在织物上。实验对相变储能材料、乳化剂种类及用量、剪切时间及速度、芯壁比、甲醛/三聚氰胺摩尔比等工艺进行筛选,分析了不同工艺参数下所得微胶囊样品的外观形貌和储能效果；同时还探讨了光致变色储能微胶囊的合成和变色特点,并通过DSC测试等方法考察其应用性；不同后处理方法和改变微胶囊制备工艺,可以降低微胶囊游离甲醛含量；最后将光致变色储能微胶囊通过水性聚氨酯应用到织物上,以K/S值、色差、静水压等方法对涂层工艺进行探讨。实验结果表明,相变储能材料、乳化剂种类及用量、剪切时间及速度、芯壁比、甲醛/三聚氰胺摩尔比的不同对微胶囊的成囊率、囊芯率、粒径大小及分布、储能效果有影响,此外变色材料的用量对光致变色储能微胶囊变色效果有影响；光致变色储能微胶囊的DSC测试结果显示,该微胶囊相变温度合理,相变潜热较高。后处理法、2次成壳、小粒径乳液、三聚氰胺分批预聚工艺都能有效降低微胶囊游离甲醛含量；预烘温度及时间、焙烘温度及时间、微胶囊用量对涂层织物透湿性、变色效果、储能效果有影响；涂层织物的DSC测试结果显示,该织物的相变温度合理,具有一定的储能效果。
[Abstract]:In order to develop photochromic and energy storage materials, microcapsules were prepared by in-situ polymerization, using melamine resin as wall material, coated with solid paraffin, mixed paraffin, and dissolved in discoloration materials. Then the photochromic energy storage microcapsules were applied to the fabric. The materials of phase change energy storage, the type and amount of emulsifier, the shear time and speed, the ratio of core to wall, the molar ratio of formaldehyde to melamine were screened. The appearance and energy storage effect of the microcapsules obtained under different technological parameters were analyzed, and the synthesis and color change characteristics of photochromic energy storage microcapsules were also discussed, and the application of the microcapsules was investigated by DSC test. The content of free formaldehyde in microcapsules can be reduced by different post-treatment methods and by changing the preparation process of microcapsules. Finally, the photochromic energy storage microcapsules are applied to fabric by waterborne polyurethane, with K / S value, color difference, The coating process was studied by hydrostatic pressure. The results showed that the phase change energy storage material, the type and amount of emulsifier, the shear time and velocity, the ratio of core to wall, the molar ratio of formaldehyde to melamine had different effects on the encapsulation rate and core rate of microcapsules. The size and distribution of particle size, the effect of energy storage, and the amount of photochromic materials have influence on the color change of photochromic energy storage microcapsules, and the DSC test results of photochromic energy storage microcapsules show that the phase change temperature of the microcapsules is reasonable. The latent heat of phase change is relatively high. The post-treatment method can effectively reduce the content of free formaldehyde in microcapsules, pre-baked temperature and time, baking temperature and time, small particle size emulsion and melamine batch prepolymerization process. The results of DSC test showed that the phase change temperature of the coated fabric was reasonable and the effect of energy storage was good.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TB34

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