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OALib Journal期刊
ISSN: 2333-9721
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储能墙板用癸酸-硬脂酸/膨胀珍珠岩定型复合相变材料的制备与表征
DOI: doi:10.3969/j.issn.1671-7627.2012.06.010, PP. 48-53
Keywords: 储能墙板,二元癸酸-硬脂酸共晶混合物,膨胀珍珠岩,真空吸附法
Abstract:
采用真空吸附法将液态的癸酸-硬脂酸(ca-sa)二元共晶相变材料封装入多孔膨胀珍珠岩(ep)中,制备颗粒定型复合相变材料ca-sa/ep,并以石膏为无机基体研制储能墙板。采用傅里叶红外光谱仪(ft-ir)、扫描电子显微镜(sem)、差示扫描量热仪(dsc)、多路温度测试仪和热扩散系数测试仪表征材料的性能。结果表明:以质量比4:1的ca-sa二元共晶相变材料在ep复合相变材料中的最佳吸附质量分数为75%,且在ep的多孔网络结构中均匀分布,复合过程中ca-sa二元共晶相变材料与ep间不发生化学反应,没有新产物形成;ca-sa/ep颗粒定型复合相变材料的相变温度和相变潜热分别为20.7℃和120.4j/g,500次热循环后,颗粒定型复合相变材料的热性能基本不变。
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