Preparation and properties of ion crosslinked paraffin-based enhanced thermal conductivity phase change materials
Paraffin(PA)was grafted and self-emulsified to obtain PA emulsion.The grafted products were dispersed in the emulsion layer in the form of emulsion particles.The internal locking and riveting of thermal conductivity materials were formed by the spatial distribution of emulsion particles and the ion crosslinking between emulsion particles at room temperature.The PA based enhanced thermal conductivity phase change material PA@Cu was prepared by adding Cu powder and impregnated with quantitative PA for 20 min at 80℃to obtain PA@Cu-PA,whose elemental structure,apparent morphology,phase change enthalpy,thermal conductivity and thermal stability were studied.The results show that the thermal conductivity and crystallization enthalpy of PA@Cu-PA are 0.468 W/(m·K)and-133.27 J/g respectively.There is no obvious leakage at 85℃,its thermal decomposition temperature is 384.5℃,representing excellent performance in energy storage and thermal stability.
万方数据
维普
