| abstract |
The invention discloses hybridization wall material nano-capsules made of a phase change energy storage material and a preparation method of the hybridization wall material nano-capsules. The preparation method specifically comprises the steps of mixing the phase change energy storage material, an alkoxy silane type compound, a vinyl monomer and an initiator to form an oil phase, adding a water phase and an emulsifier, emulsifying, then ultrasonically homogenizing to form miniemulsion, introducing nitrogen to remove oxygen, adding a basic catalyst, and stirring to react under a condition of closing or continuously introducing nitrogen for protection, thus obtaining a mixture of phase change energy storage material nano-capsules and the water phase; filtering the mixture, washing by deionized water, and drying, thus obtaining a powdery product. The product is regular in shape, has a particle size less than 1 mu. m, and is great in specific surface area, high in heat storage/release efficiency, high in enthalpy of phase change and heat stability, and capable of tolerating more than 1000 times of a core material melting-crystallization process; the product can be combined with multiple inorganic materials and organic polymers to prepare a thermoregulation composite material, and is good in compatibility and little in influence to mechanical property. |