二维手风琴状棕榈酸/MXene复合相变材料的制备及性能  

Preparation and properties of two-dimensional accordion-like MXene/palmitic acid composite phase change materials

作　　者：孟良晨 闫霆 王凯 汤鑫 潘卫国 MENG Liangchen;YAN Ting;WANG Kai;TANG Xin;PAN Weiguo(College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Key Laboratory of Clean Power Generation and Environmental Protection Technology in Mechanical Industry,Shanghai 200090,China)

机构地区：[1]上海电力大学能源与机械工程学院,上海200090 [2]机械工业清洁发电环保技术重点实验室,上海200090

出　　处：《精细化工》2023年第6期1264-1271,1318,共9页Fine Chemicals

基　　金：上海市科委科技攻关项目(18DZ1202502,21DZ1207203)。

摘　　要：以二维过渡金属碳化物、氮化物和/或碳氮化物(MXene)为支撑骨架,以棕榈酸(PA)为相变材料,通过熔融共混法制备MXene复合材料(PA/MXene),并对不同Mxene质量分数的PA/MXene进行了结构表征和热性能分析。结果表明,与纯PA相比,MXene质量分数为20%的PA/MXene(记为PA/MXene-20%)吸光范围从200.0~263.2 nm拓展到200.0~679.3 nm,热分解温度提高了13%,导热能力可增加200.0%,光热转换效率达到84.5%,可实现太阳能光热转换、热能储存的一体化应用。MXene composites(PA/MXene)was prepared by melt blending method with two-dimensional transition metal carbide,nitride and/or carbon nitride(MXene)as support skeleton and palmitic acid(PA)as phase change material.The structure and thermal properties of PA/MXene with different MXene mass fractions were then analyzed.The results showed that compared with those of pure PA,the light absorption range of the PA/MXene with MXene mass fraction of 20%(denoted as PA/MXene-20%)was increased from 200.0~263.2 nm to 200.0~679.3 nm,the degradation temperature was increased by 13%,the thermal conductivity was increased to 200.0%,and the photothermal conversion efficiency reached 84.5%.PA/MXene-20%could realize integrated application of solar photothermal conversion and thermal energy storage.

关 键 词：热能储存 相变材料 棕榈酸 热储存特性 光热转换 功能材料 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB332[动力工程及工程热物理—热能工程]