摘要
针对固液相变储能材料在相变过程中液体发生泄漏而缩短其使用寿命,甚至造成安全隐患问题,实验研究常压下自发浸渗法制备了一种低相变温度、高潜热的尾矿陶粒/正壬醛酰腙复合材料,通过红外光谱、紫外可见漫反射光谱、XRD和对N2吸脱附实验对复合材料进行了表征,测试了复合材料的热稳定性和相变储能稳定性。红外光谱和紫外可见漫反射光谱结果表明,尾矿陶粒与正壬醛酰腙之间作用力是氢键;XRD测试和N2吸脱附实验显示,在形成复合材料过程中,正壬醛酰腙钻入到了尾矿陶粒的孔结构中;TG和DSC测试结果表明,形成复合材料后热稳定性增强,在100次升温和降温循环试验后,复合材料的熔化潜热仅降低了1.10%,凝固潜热增加了0.40%,说明复合材料具有良好的循环稳定性和热稳定性。
In response to the problem of liquid leakage during the phase change process of solid-liquid phase change energy storage materials,which can shorten their service life and even cause safety hazards,a low phase change temperature with high latent heat tailing ceramic particle/n-nonaldehyde hydrazone composite material was prepared by atmospheric pressure spontaneous infiltration method.The composite material was characterized by infrared spectroscopy,UV-vis spectroscopy,XRD,and N2 adsorption and desorption experiments,and its thermal stability and phase change energy storage stability were investigated.The results of the infrared spectroscopy and UV-vis spectroscopy indicate that the interaction force between tailing ceramic particles and n-nonaldehyde hydrazone is hydrogen bonding;XRD testing and N2 adsorption desorption experiments show that during the formation of composite materials,n-nonaldehyde hydrazone can penetrate into the pore structure of tailing ceramic particles;TG and DSC test results indicate that the thermal stability of the composite material is enhanced after composite material formed.After 100 cycles of heating and cooling,the latent heat of melting of the composite material only decreased by 1.10%,while the latent heat of solidification increased by 0.40%,which indicate that the composite material has good cycling stability and thermal stability.
作者
陈凤英
郭嘉鑫
赵岩
庞凯鑫
赵威
姜钰伟
胡广志
陈启军
CHEN Fengying;GUO Jiaxin;ZHAO Yan;PANG Kaixin;ZHAO Wei;JIANG Yuwei;HU Guangzhi;CHEN Qijun(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shaanxi Engineering Research Center for Mineral Resources Clean&Efficient Conversion and New Materials,Shangluo University,Shangluo,Shaanxi 726000,China;Institute for Ecological Research and Pollution Control of Plateau Lakes,School of Ecology and Environmental Science,Yunnan University,Kunming,Yunnan 650504,China;Xinyang Vocational College of Art,Xinyang,Henan 464000,China)
出处
《井冈山大学学报（自然科学版）》
2024年第5期24-29,共6页
Journal of Jinggangshan University (Natural Science)
基金
国家自然科学基金项目(21677171)
陕西省大学生创新创业训练计划项目(S202311396074)
商洛学院科学技术研究项目(21CK02)。
关键词
尾矿陶粒
正壬醛酰腙
复合材料
相变储能
熔化潜热
凝固潜热
tailing ceramic particles
n-nonaldehyde hydrazone
composite materials
phase change energy storage
melting latent heat
latent heat of solidification
作者简介
通信作者:胡广志(1982-),男,安徽淮南人,研究员,博士,博士生导师,主要从事新能源催化材料研究(E-mail:guangzhihu@ynu.edu.cn)。
