Capric acid-myristic acid eutectic mixture/diatomite form-stable phase change energy(FSPCM) storage materials were prepared by using vacuum impregnation method.Capric acid was mixed with myristic acid to prepare binary fatty acid eutectic,which was selected as energy storage element material and diatomite was selected as supporting material.The structure,microstructure,thermal properties and thermal stability of FSPCM were characterized by infrared spectroscope,scanning electronic microscope,differential sc...