大连工业大学学报2012，Vol.31Issue(1)：60-63,4.
硬脂酸-月桂酸二元复合相变材料
Binary multiple stearic acid/lauric acid phase change material
摘要
Abstract
With stearic acid (SA), lauric acid (LA) as raw materials, the binary of fatty acids phase change materials were prepared by melt blending. Phase change temperature and latent heat of the SA/SA PCM were characterized using differential scanning calorimetry (DSC). The structure, crystalline morphology, and thermal insulation properties of the SA/LA PCM were investigated using fourier transformation infrared spectroscope (FTIR), polarizing optical microscopy (POM), and temperature-recording instrument. The FTIR and POM results showed that SA and LA was combininged by intermolecular forces, and SA/LA PCM was formed eutectic structure, moreover, the radius of crystal reduced with decrement of the SA/LA ratio. The DSC results indicated that SA/LA PCM had high latent heat storage capacity of more than 200 J/g. With the reducing SA/LA ratio, crystallization temperature reduced first and then increased, showing the performance characteristics of eutectic mixture. Cooling curves of SA/LA PCM showed that with the reducing SA/LA ratio, the platform temperature reduced first and then increased, and when the SA/LA was equal to 1/2, the temperature platform appeared at 30. 9 ℃ , the soaking time was continued for about 25 min twice as long as that of pure SA or LA.关键词
硬脂酸/月桂酸/相变材料/步冷曲线Key words
stearic acid/ lauric acid/ phase change materials/ cooling curve分类
化学化工引用本文复制引用
郭静,相恒学,徐德增,王倩倩..硬脂酸-月桂酸二元复合相变材料[J].大连工业大学学报,2012,31(1):60-63,4.基金项目
辽宁省教育厅重点实验室项目(LS2010010) （LS2010010）
纤维材料改性国家重点实验室开放课题(V201106). （V201106）
