摘要
研究了3种沉淀剂对合成SiO_(2)基复合相变微胶囊的形貌特征和相变储热性能的影响。通过红外光谱仪(FT-IR)、X射线衍射仪、导热系数测定仪等对SiO_(2)基复合相变微胶囊的组成、结构和导热性能进行分析。结果表明,正十八烷与SiO_(2)壳材仅是物理结合,两者并未发生化学反应;当沉淀剂为盐酸时所制备的SiO_(2)基复合相变微胶囊分散性良好,包覆率和储能效率可达69%,导热系数提高近50%。SiO_(2)基复合相变微胶囊对锂离子电池组热管理测试结果表明,微胶囊能有效控制电池组的表面温度,且温度波动范围小。
The effects of three kinds of precipitant on the morphology and heat storage properties of SiO_(2)based composite microcapsules are studied.The composition,structure and thermal conductivity of SiO_(2)composite phase change microcapsules are analyzed through infrared spectrometer FT-IR,X-ray diffractometer,thermal conductivity tester and other characterization methods.Results show there is physical combination only between noctadecane and SiO_(2)shell,without chemical reaction happening.SiO_(2)composite phase change microcapsules prepared with hydrochloric acid as the precipitator have good dispersion performance,both their coating rate and energy storage efficiency can reach 69%,and the thermal conductivity can be increased by nearly 50%.Thermal management test for Li-ion battery with SiO_(2)-based composite phase change microcapsules shows that the microcapsules can effectively control the surface temperature of the battery pack,and the temperature fluctuation range is small.
作者
谭俊华
朱德伟
孙葳喆
蔚畅
薛利杰
TAN Jun-hua;ZHU De-wei;SUN Wei-zhe;WEI Chang;XUE Li-jie(Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)
出处
《现代化工》
CAS
CSCD
北大核心
2024年第12期166-170,共5页
Modern Chemical Industry
基金
2022年和2023年国家级大学生创新创业项目(GK2022235,GK2023009)。
关键词
沉淀剂
SiO_(2)基复合相变微胶囊
相变储热性能
热管理
precipitant
SiO_(2)composite phase change microcapsules
phase change energy storage property
thermal management
