摘要
采用混合烧结工艺将相变材料KF-KCl和陶瓷材料Si O2进行复合,并添加聚乙烯醇作为黏结剂、B2O3作为烧结助剂,成功制备出一种陶瓷基复合结构储热材料。通过试验,确定了复合材料的烧结程序以及最佳的烧结温度。XRD分析表明,由KF-KCl/Si O2构成的复合结构储热材料各物质之间具有良好的化学相容性;TG-DSC分析表明,复合材料在591.7℃时出现吸热峰,相变潜热是157.4 J/g。该复合材料具有储热密度高、无需容器盛装等特点,可以实现高温储热。
A KF-KCl based composite phase change material has been successfully fabricated using power sintering method with Si O2 as matrix, vinyl alcohol as binder and B2O3 as sintering additive. The formulation and the optimal sintering temperature are obtained through experiments. XRD analyses indicate a good chemical compatibility of the system. TG-DSC analyses show an endothermic peak at 591.7 ℃ with a latent heat of 157.4 J^-1·g. The results demonstrate that the composite PCM has a high energy density with potential for high temperature thermal storage without using a container.
出处
《储能科学与技术》
CAS
2015年第6期616-621,共6页
Energy Storage Science and Technology
基金
国家科技支撑计划(2012BAA05B05)
湖北省科技支撑计划(2013BAA093)项目
关键词
相变材料
无机盐
陶瓷
高温储热
phase change material
inorganic salt
ceramic
high temperature thermal storage
