化工进展2018，Vol.37Issue(2)：689-693,5.DOI:10.16085/j.issn.1000-6613.2017-0802
正辛酸-肉豆蔻酸低温相变材料的制备和循环性能
Preparation and cyclic properties of low temperature phase change materials of n-caprylic acid and myristic acid
摘要
Abstract
This paper developed a binary organic composite phase change material that is used for pharmaceutical refrigerating transportation system with the phase change temperature of 2—8℃.The material was mixed with a mixture of n-caprylic acid and myristic acid.First two binary eutectic points were determined through the theoretical calculation method to calculate the eutectic mixture ratio,phase transition temperature and latent heat value.Then six different proportion of mixtures around the eutectic point were made.The low melting point temperature of n-caprylic acid and myristic acid was found to be 6.2℃,the sub-cooled temperature by 0.5℃.The mass ratio was found to be 87:13.The phase transition temperature of the composite phase change materials was 7.13℃ and the latent heat of phase change measured by differential scanning calorimeter(DSC)was found to be 146.1J/g .The thermal conductivity of eutectic liquid was measured by Hot Disk and was found to be 0.232 W/(m·K).It was found that the phase transition temperature and latent heat value of the composite phase change materials of n-caprylic acid and myristic acid were 40 times and 80 times more respectively.However,it was found that the phase change temperature and latent heat value were not altered.The results showed that the composite had great potential in the cold storage system,especially in medicine cold storage transportation system.关键词
二元混合物/相变/热力学性质/稳定性Key words
binary mixture/phase change/thermodynamic properties/stability分类
能源科技引用本文复制引用
李玉洋,章学来,徐笑锋,MUNYALO Jotham Muthoka,陈跃,陈启杨..正辛酸-肉豆蔻酸低温相变材料的制备和循环性能[J].化工进展,2018,37(2):689-693,5.基金项目
上海市科委项目(16040501600). （16040501600）
