Study On Microencapsulated Phase Change Material Synthesize By Interfacial Polymerization And Energy Storage Mechanism

In recent years, with the gradual increase in building energy consumption, people are increasingly demanding building energy efficiency. And the phase change material can play an excellent energy saving effect in the building exterior-protected construction. Therefore, how to modify phase change materials so as to be used well in the building exterior-protected construction become a major research.This paper introduces microencapsulated phase change material of variety preparation methods and selects interfacial polymerization from them.Second, synthesize the microencapsulated phase change materials of single-wall material and composite-wall material through select the appropriate capsule core and wall materials, study the parameters of the preparation process. At the same time test the microencapsulated phase change material properties by scanning electron microscopy, infrared spectroscopy, DSC curves and TG curves. In addition, compare the single-wall material of microencapsulated phase change material and composite-wall material of microencapsulated phase change material, the results show that the composite wall material of microencapsulated phase change material has opaque rules of spherical particles, compact package, capsule core is not easy to flow out; its phase transition paraffin solid-liquid phase change when a better blocking effect, which can withstand temperatures up to about 150℃.Final analysis of microencapsulated phase change material energy storage mechanism, as well as evaluate microencapsulated phase change material's energy saving effect in cavity wall with insulation, the results show that it has a very good energy saving effect in the building exterior-protected construction.