摘要
以月桂酸-癸酸复合二元酸作为PCM,以膨胀珍珠岩、膨胀蛭石和膨胀石墨3种多孔颗粒作为封装载体,用真空吸附-熔融浸渍法制备了3种多孔相变储能颗粒。通过SEM观测多孔颗粒吸附PCM前后的形貌,并用TG-DSC测试多孔相变储能颗粒的相变温度和相变潜热。结果表明,3种多孔相变储能颗粒的相变温度均在人体舒适度范围内;多孔颗粒的微观结构与PCM吸附量存在直接关系;经受150次冷热循环后,多孔相变储能颗粒的相变温度和相变潜热均比较稳定。
In this article,with lauric-capfic acid composite as PCM,expanded perlite, expanded vermiculite and expanded graphite three porous particles as enclosed carrier, three kinds of phase change energy storage granule were prepared by vacuum adsorption and melt impregnation method. Morphology of porous particles before and after the adsorption of PCM was observed through SEM. Phase change temperature and latent heat of energy storage granule were tested by TG-DSC. The results showed that,three kinds of phase change energy storage granule all fall in human comfort temperature range;PCM adsorption quantity and microstructure of porous particle exists direct correlation;after 150 times thermal cycles,phase change temperature and latent heat of phase change energy storage granule were stable.
出处
《新型建筑材料》
2012年第10期85-87,90,共4页
New Building Materials
基金
江苏省高校自然科学基础研究项目(08KJD560001)
关键词
多孔颗粒
相变储能
真空吸附
熔融浸渍
蓄热性能
porous particles
phase change energy storage
vacuum adsorption
melt impregnation
heat preservation performance
