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Preparation and Performance of n-Dodecane Microencapsulated phase change Cold Storage Materials

Journal of Renewable Materials 2023年第2期11卷 689-705页

作者： Pan Zhang Lingling Xu Xin Shi Zemeng Guo Jiajia Cheng College of Materials Science and Engineering Nanjing Tech UniversityNanjing211816China

Cold chain transportation is currently a hot research *** the traditional refrigeration methods lead to the consumption of large amounts of energy,the search for new energy storage materials is a major *** the present contribution,n-dodecane/PMMA microencapsulated phase change materials were prepared by suspension polymerization for ice-temperature cold chain transportation and their preparation parameters were explored using the encapsulation ratio as optimization *** results show that the n-dodecane-containing microcapsules have a maximum encapsulation ratio of 93.2%when using a core-to-wall ratio of 3:1,5%of emulsifier,30%of crosslinker,and 2000 rpm of emulsification *** phase transition temperature and enthalpy are-2℃and 195.9 kJ/kg,*** microcapsules prepared with the optimized process parameters have good microscopic morphology,high energy storage efficiency,uniform particle size and good thermal stability,making them ideal materials for cold chain transportation.

关键词： phase change microcapsules n-dodecane suspension polymerization cold storage

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Preparation and performance of novel magnetic phase-change-microcapsule-supported Bi_(2)WO_(6)catalyst

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Chinese Chemical Letters 2024年第3期35卷 158-161页

作者： Zhuoni Jiang Zhiqing Ge Shuo Yan Jingjing Shu Mozhen Wang Xuewu Ge Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Southwest University of Science and TechnologyMianyang 621010China

The design and synthesis of novel photocatalyst with self-temperature control function is an important topic in the field of advanced environmental functional *** this work,submicron-sized magnetic phase change microcapsules composed of paraffin core and Fe_(3)O_(4)-loaded silica shell are prepared,on which the Bi_(2)WO_(6)crystals is grown in situ through hydrothermal reaction to obtain novel magnetic phase-change-microcapsule-supported Bi_(2)WO_(6)catalyst(MP@FS/BWO).The MP@FS/BWO has a paraffin encapsulation ratio of 57.1%,and the phase change enthalpy of 105.1 J/g in a temperature range of 50–60℃,which endows the MP@FS/BWO with a certain self-temperature regulation ***@FS/BWO shows excellent catalytic performance in the decomposition of rhodamine B under the simulated sunlight *** the light source is turned off,it still has good catalytic ability by maintaining high temperature due to its temperature control function based on the phase transition *** MP@FS/BWO can be easily recycled by magnetic separation and shows good structural stability and *** work provides a new idea for the development of long-effect and energy-saving outdoor photocatalysts.

关键词： Photocatalyst phase change microcapsules Self-temperature regulation Bismuth tungstate Magnetic separation

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Preparation of phase change Microcapsule and Its Plication in Textiles

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Journal of Donghua University(English Edition) 2010年第3期27卷 419-424页

作者：闵洁寿晨燕 School of Chemistry Chemical Engineering and BiotechnologyDonghua University

phase change microcapsules(PCMs)are prepared with n-hexadecane and n-octadecane as core material,and melamine-formaldehyde resin is used as shell material by in-situ *** scanning calorimetry(DSC)was used to analyze the phase change *** conductivity and maximum heat flux of cotton fabric finished with PCMs before and after being washed were also *** has been found that melting and crystal enthalpy of the PCMs decrease with decreasing the core/shell ratio,while qmax of fabric treated with PCMs decreases and the thermal conductivity *** shows that fabric finished by the PCMs has good temperature conditioning function.

关键词： phase change microcapsules qmax thermal conductivity cotton differential scanning calorimetry(DSC)

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相变蓄能微胶囊的制备

相变蓄能微胶囊的制备

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2006年全国高分子材料科学与工程研讨会

作者：万贤王懿徐军郭宝华王馨张寅平清华大学化学工程系清华大学化学工程系清华大学化学工程系清华大学化学工程系清华大学建筑科学系清华大学建筑科学系

＜正＞热能储存在建筑物集中空调和采暖系统、热电冷联供系统、相变节能建材及构件等方面有重要应用,不仅可缓解能量供求在时间和强度上不匹配的矛盾,而且可缩小相应能源系统的规模,节约初投资。相变材料作为储能载体,已广泛应用于上述... 详细信息

＜正＞热能储存在建筑物集中空调和采暖系统、热电冷联供系统、相变节能建材及构件等方面有重要应用,不仅可缓解能量供求在时间和强度上不匹配的矛盾,而且可缩小相应能源系统的规模,节约初投资。相变材料作为储能载体,已广泛应用于上述领域,而将相变材料封装在胶囊中．再将胶囊混合入流体,形成固液两相功能流体以达到强化对流换热和蓄热蓄能的目的,是当前工程热物理的一个前沿热点。

关键词： phase change microcapsules Paraffin Interfacial Polycondensation

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