Preparation method of phase change energy storage paraffin microcapsule with multiple layers of capsule shells

• Main Authors: PENG CHUHE, LIAO YANFANG, MO YOUBIN, YU HUIQUN, ZHOU HAI
• Format: Patent
• Language: English
• Published: 13.01.2016
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DYES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a preparation method of a phase change energy storage paraffin microcapsule with multiple layers of capsule shells. The method comprises the following steps: 1, mixing a trimesoyl chloride active monomer with phase change paraffin, heating to form an oil phase liquid, adding the oil phase liquid to an aqueous emulsifier solution having a same temperature with the oil phase liquid, and adding an aqueous solution of an m-phenylenediamine cross-linking agent while stirring to prepare an oil-in-water emulsion; 2, continuously stirring the above paraffin microcapsule emulsion in a heat insulation state, adjusting the pH value of the paraffin microcapsule emulsion to be greater than 8.0 in the stirring process, centrifuging after the stirring ends, and washing with water; and 3, adding the above paraffin microcapsule with the inner layer capsule shell of polyamide to a trihydroxymethyl aminomethane-HCl buffer solution containing 4-(2-aminoethyl)-1,2-resorcinol, dipping while continuously stirring at room temperature, separating, washing with water, and drying. The energy storage paraffin microcapsule can prevent leakage of capsule core paraffin in the phase change process, has good endophilicity with water, and is in favor of transferring heat.