Preparation and property of tetradecanol microcapsule incorporated with nano-TiO2 in the shell
Zhu Yangqian ,Wang Haiping
Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, School of Chemical and Environmental Engineering,Jianghan University,Wuhan 430056
Abstract: The phase change microcapsules containing tetradecanol were prepared by in-situ polymerization with melamine-urea-formaldehyde resin modified with nano titanium dioxide (nano-TiO2) as the wall materials.Various methods were used to characterize the as-prepared microcapsules so as to investigate the effect of the amount of nano-TiO2 and emulsifier concentration on performance of microcapsules,including infrared spectroscopy,laser particle size analyzer,scanning electron microscopy,differential scanning calorimetry and thermogravimetric analysis.The results indicated that the mean diameter of capsules fell in the range of 58.2~83.6μm,which was influenced greatly by the concentration of emulsifier.The microcapsules modified by less than 5wt% nano-TiO2 presented smooth and spherical morphology.The latent heat,core content and thermal stability of modified microcapsules were firstly increased and then decreased with the addition of nano-TiO2 increasing.When the mass fraction of nano-TiO2 was 3wt%,the melting latent heat was up to 151.5J/g and the core content was 69.9%.The thermostability was evidently increased.
朱阳倩,汪海平. 壁材掺杂纳米TiO2的正十四醇相变微胶囊的制备及性能研究[J]. 化工新型材料, 2019, 47(3): 134-137.
Zhu Yangqian ,Wang Haiping. Preparation and property of tetradecanol microcapsule incorporated with nano-TiO2 in the shell. New Chemical Materials, 2019, 47(3): 134-137.
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