摘要
目的研究不同质量比的Mg Cl2·6H2O和Mg(NO3)2·6H2O的混合水合盐作为储热相变材料的热物性能。方法制备不同混合质量比的Mg Cl2·6H2O和Mg(NO3)2·6H2O,用温度记录仪测其步冷曲线,得到相变温度和过冷度,再用高低温交变箱测试长期循环性能,最后用DSC对相变材料循环前后的相变潜热进行测试比较。结果质量比为5∶5的Mg Cl2·6H2O和Mg(NO3)2·6H2O的混合水合盐相变材料表现出良好的热物性,具有相变温度适合、过冷度小、相变潜热大和长期循环性能稳定等特点,可以作为潜在的储热相变材料。
To study the thermal properties of different mass ratios of Mg Cl2·6H2O and Mg（NO3）2·6H2O hydrated salt mixtures as phase change materials for thermal insulation packaging. Samples of Mg Cl2·6H2O and Mg（NO3）2·6H2O mixture were prepared with different mass ratios, and the cooling curves were measured to discover melting points and super cooling degrees by means of temperature logger. Then the hydrated salt mixtures were put into the high and low temperature alternating chamber to observe the thermal durability. The changes of latent heat were measured by DSC. It turned out that the mass ratio of 5∶5 was a potential phase change material for heat storage, with suitable temperature, no super-cooling,relatively big latent heat and stable cyclic performance.
出处
《包装工程》
CAS
CSCD
北大核心
2015年第1期65-69,共5页
Packaging Engineering
关键词
储热
相变材料
热物性
混合水合盐
heat storage
phase change material
thermal properties
hydrated salt mixture
