微胶囊碳纳米管储能材料的制备与表征  

Preparation and characterization of microcapsules energy storage materials with carbon nanotube modified

作　　者：倪卓[1] 白嘉健 曾茵茵 

机构地区：[1]深圳大学化学与化工学院,广东深圳518060

出　　处：《储能科学与技术》2016年第2期215-221,共7页Energy Storage Science and Technology

基　　金：国家自然科学基金项目(51378315);深圳市科学技术研究与发展基金项目(JCYJ20130329114709152)

摘　　要：将碳纳米管加入以硬脂酸丁酯作为囊芯的材料,脲醛树脂作为囊壁材料的原位聚合微胶囊体系,合成具有储热性能的碳纳米管微胶囊材料,研究了微胶囊技术与碳纳米管技术对硬脂酸丁酯相变材料储热性能的影响。采用扫描电镜观察样品表面形貌与分布,傅里叶红外光谱仪对样品进行结构表征,采用差式量热扫描仪对样品进行热性能分析,采用Hotdisk热物性分析测试仪对样品的导热系数进行测量。结果表明,碳纳米管均匀分散在囊芯硬脂酸丁酯中,提高了该材料的相变潜热和导热特性。制成的微胶囊呈球形,完整包覆了硬脂酸丁酯碳纳米管复合材料,提高了相变材料的热稳定性。碳纳米管复合材料的热物性能和储热性能与碳纳米管的分散方法、尺寸和品质,甚至测量方法和仪器有关系,本实验结果对所采用的相变材料和碳纳米管的相关作用进行了研究,提供了这方面的实验数据。In this paper, we report a study on the preparation and characterization of microcapsules containing butyl acrylate（energy storage material） and carbon nanotubes, with urea formaldehyde resin as shell material. An emulsion-solvent evaporation method was used for the production of the capsules. Scanning electron microscope, Fourier infrared spectrometer, differential scanning calorimetry and the hotdisk based thermal conductivity meter were used to characterize the capsules. Effects of the microcapsulation and the addition of carbon nanotubes were investigated on the thermal storage performance. The results showed that the carbon nanotubes were uniformly dispersed in butyl stearate within the core of the capsules, and the latent heat of phase change material and heat c were improved. The microcapsules were spherical, and the stearic acid butyl acrylate were encapsulated completely, providing an improved thermal stability of the phase change materials. It was also found that properties of the capsules were affected by how the carbon nanotubes were dispersed, the size and quality of the carbon nanotubes used, and even the methods and apparatus used for the measurements.

关 键 词：微胶囊 原位聚合法 碳纳米管 硬脂酸丁酯 相变材料 

分 类 号：TQ317[化学工程—高聚物工业]