一种用于热能储存的月桂酸杂化膨润土复合相变材料。
A lauric acid-hybridized bentonite composite phase-changing material for thermal energy storage.
作者信息
Liu Songyang, Han Jie, Wang Lunan, Gao Ying, Sun Hai, Li Weilong
机构信息
School of Civil Engineering, Liaoning Shihua University Fushun 113001 China
Liaoning Key Lab of Petro-chemical Special Building Materials, Liaoning Shihua University Fushun 113001 China.
出版信息
RSC Adv. 2020 Jul 8;10(43):25864-25873. doi: 10.1039/c9ra06936d. eCollection 2020 Jul 3.
In this study, a form-stable composite phase-changing material (PCM) was synthesised by a vacuum impregnation method. Natural Na-bentonite and lauric acid (LA) were used as the supporting material and PCM, respectively. In addition, flake graphite (FG) was used for enhancing the thermal conductivity of the form-stable composite PCM, besides for blocking the leakage of the PCM. Notably, with the addition of FG, the period of melting and freezing of the composite PCM decreased to a certain extend. Meanwhile, the heat-transfer characteristic of the composite increased. Moreover, the as-prepared form-stable composite PCM showed good thermal reliability after 200 cycles of thermal-cold treatment and has the potential to be used in thermal energy storage systems.
在本研究中，通过真空浸渍法合成了一种形状稳定的复合相变材料（PCM）。天然钠膨润土和月桂酸（LA）分别用作支撑材料和PCM。此外，片状石墨（FG）除了用于阻止PCM泄漏外，还用于提高形状稳定复合PCM的热导率。值得注意的是，随着FG的加入，复合PCM的熔化和冻结周期在一定程度上缩短。同时，复合材料的传热特性增强。此外，所制备的形状稳定复合PCM在经过200次冷热循环处理后表现出良好的热可靠性，具有在热能存储系统中应用的潜力。
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