Preparation of capric acid/halloysite nanotube composite as form-stable phase change material for thermal energy storage
Preparation of capric acid/halloysite nanotube composite as form-stable phase change material for thermal energy storage
复制标题
癸酸/埃洛石纳米管复合材料作为形态稳定的相变蓄热材料的制备
DOI：
10.1016/j.solmat.2011.05.024
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发表时间：
2011-10-01
影响因子：
6.9
通讯作者：
Liu, Jindun
中科院分区：
文献类型：
--
作者：
Mei, Dandan;Zhang, Bing;Liu, Jindun
通过将癸酸（CA）吸收到埃洛石纳米管（HNT）中，制备了一种新型形状稳定的复合材料作为热能存储相变材料（PCM）。采用 TEM、FT-IR 和 DSC 分析技术对复合 PCM 进行了表征。该复合材料可含有高达 60 wt% 的癸酸，并在经过 50 次熔融冷冻循环后完美保持其原始形状，没有任何 CA 泄漏。通过DSC测定复合材料(CA/HNT:60/40wt%)的熔融温度和潜热为29.34℃和75.52J/g。复合材料中添加石墨(G)可改善蓄热性能，与不含石墨的复合材料相比，蓄热率和释放率分别提高1.8倍和1.7倍。由于其对CA的吸附量高、储热能力高、热稳定性好、成本低、制备方法简单等优点，该复合材料可被认为是一种经济高效的潜热储存材料，可在不久的将来应用于太阳能储存、建筑节能和农业温室等实际应用。 (C) 2011 Elsevier B.V. 保留所有权利。
A novel form-stable composite as phase change material (PCM) for thermal energy storage was prepared by absorbing capric acid (CA) into halloysite nanotube (HNT). The composite PCM was characterized by TEM, FT-IR and DSC analysis techniques. The composite can contain capric acid as high as 60 wt% and maintain its original shape perfectly without any CA leakage after subjected to 50 melt-freeze cycles. The melting temperature and latent heat of composite (CA/HNT: 60/40 wt%) were determined as 29.34 degrees C and 75.52 J/g by DSC. Graphite (G) was added into the composite to improve thermal storage performance and the thermal storage and release rates were increased by 1.8 times and 1.7 times compared with the composite without graphite, respectively. Due to its high adsorption capacity of CA, high heat storage capacity, good thermal stability, low cost and simple preparation method, the composite can be considered as cost-effective latent heat storage material for practical applications such as solar energy storage, building energy conservation and agricultural greenhouse in the near future. (C) 2011 Elsevier B.V. All rights reserved.