Preparation and Performance of n-Dodecane Microencapsulated Phase Change Cold Storage Materials  

作　　者：Pan Zhang Lingling Xu Xin Shi Zemeng Guo Jiajia Cheng 

机构地区：[1]College of Materials Science and Engineering,Nanjing Tech University,Nanjing,211816,China

出　　处：《Journal of Renewable Materials》2023年第2期689-705,共17页可再生材料杂志（英文）

基　　金：supported by the National Key Research and Development Program of china(No.2018YFD1101005)and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).

摘　　要：Cold chain transportation is currently a hot research topic.Since the traditional refrigeration methods lead to the consumption of large amounts of energy,the search for new energy storage materials is a major trend.In 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 indicator.The 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 speed.The phase transition temperature and enthalpy are-2℃and 195.9 kJ/kg,respectively.The 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 

分 类 号：TB34[一般工业技术—材料科学与工程]