Phase-change energy-storage material nanocapsule and preparation method thereof
A technology of phase-change energy storage materials and nanocapsules, which is applied in the field of capsules of phase-change energy storage materials and its preparation, can solve the problems of irregular shape of nanocapsules, insufficient emulsion stability, unfavorable practical application, etc., and achieve convenient large-scale Effects of batch preparation, high heat storage/release efficiency, and regular morphology
Active Publication Date: 2015-03-25
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Abstract
The invention discloses a phase-change energy-storage material nanocapsule and a preparation method thereof and particularly relates to a phase-change energy-storage material capsule using an inorganic material as a shell layer and a preparation method of the capsule. By dispersing an oil phase formed by mixing the phase-change energy-storage material and tetraethyl orthosilicate in an aqueous phase formed by water and ethanol in a shape of nanoscale droplets, carrying out hydrolysis-condensation reaction on tetraethyl orthosilicate in the presence of a basic catalyst, and forming a silicon oxide shell layer on the surface of each of oil phase droplet to coat the phase-change energy-storage material, thus obtaining the phase-change energy-storage material nanocapsule of which the particle size is less than 1mu m. The nanocapsule has the advantages of uniform particle size distribution, large surface area and high enthalpy of phase change. The preparation method is simple and feasible, is high in preparation yield and is conductive to prepration of the phase-change energy-storage material having high heat storage/release efficiency in a large scale.
Application Domain
Heat-exchange elementsMicroballoon preparation +1
Technology Topic
Tetraethyl orthosilicateNanocapsules +15
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