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Inorganic hydrous salt phase change microcapsule energy-storage material and preparing method

A technology of phase-change microcapsules and inorganic hydrated salts, which is applied in the directions of heat exchange materials, chemical instruments and methods, can solve the problems of difficult to obtain dry powder products, process difficulties, etc., and achieves improvement of supercooling and phase separation phenomenon, Improve heat transfer efficiency and good sealing effect

Inactive Publication Date: 2016-12-14
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of inorganic hydrated salt phase change microcapsule energy storage material and preparation method, solve the aqueous solution microcapsule of current water-in-oil (W / O) type emulsion, there are many technical difficulties, it is difficult to obtain dry Problems with powder products

Method used

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  • Inorganic hydrous salt phase change microcapsule energy-storage material and preparing method
  • Inorganic hydrous salt phase change microcapsule energy-storage material and preparing method
  • Inorganic hydrous salt phase change microcapsule energy-storage material and preparing method

Examples

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Embodiment 1

[0036] (1) Take 5g magnesium sulfate heptahydrate, mix with a certain amount of deionized water to form a saturated solution, add 0.15g of sodium lauryl sulfate and ultrasonically disperse it in an ultrasonic cell pulverizer for 30 minutes, then place it at 35 ℃ in a constant temperature water bath with magnetic stirring at a stirring rate of 600 rpm for 30 minutes to obtain a uniform core material emulsion (A);

[0037] (2) Weigh 3g of polystyrene, polystyrene is added in 50mL of methylene chloride, and then the mixture is continuously stirred for 1 hour with a stirring rate of 600rpm in a magnetic stirrer, so that polystyrene is completely dissolved in dichloromethane In methyl chloride, obtain transparent polystyrene prepolymer solution (B);

[0038] (3) Add the core material emulsion (A) dropwise to the polystyrene prepolymer solution (B). During the dropwise addition, the solution (B) is kept in a constant temperature water bath at 35°C and at a stirring rate of 800rpm U...

Embodiment 2

[0040] (1) Weigh 10g of sodium thiosulfate pentahydrate, mix with a certain amount of deionized water to form a saturated solution, add 0.1g of sodium dodecylbenzenesulfonate, and ultrasonically disperse in an ultrasonic cell pulverizer for 30 minutes , and then magnetically stirred it for 40 minutes at a stirring rate of 600 rpm in a constant temperature water bath at 35° C. to obtain a uniform core material emulsion (A);

[0041] (2) take by weighing the polystyrene of 3g, polystyrene is added in the carbon tetrachloride of 50mL, then the mixture is continuously stirred for 1.5 hours with the stirring rate of 600rpm in the magnetic stirrer, polystyrene is completely dissolved in Carbon tetrachloride, obtains transparent polystyrene prepolymer solution (B);

[0042] (3) Add the core material emulsion (A) dropwise to the polystyrene prepolymer solution (B), and during the dropping process, the solution (B) is kept in a constant temperature water bath at 40°C, and at a stirring...

Embodiment 3

[0044] (1) Weigh 8g of sodium acetate trihydrate, and mix a certain amount of deionized water to form a saturated solution (A);

[0045] (2) Weigh 3g of polystyrene, polystyrene is added in 50mL of methylene chloride, and then the mixture is continuously stirred for 1 hour with a stirring rate of 600rpm in a magnetic stirrer, so that polystyrene is completely dissolved in dichloromethane In methyl chloride, obtain transparent polystyrene prepolymer solution (B);

[0046] (3) Add the saturated solution (A) dropwise to the polystyrene prepolymer solution (B), and during the dropwise addition, the solution (B) remains in a 35°C constant temperature water bath, and at a stirring rate of 600rpm until The core material emulsion (A) was added dropwise completely, and then 0.1 g of sodium lauryl sulfate was added to the mixed solution, and ultrasonically dispersed in an ultrasonic cell pulverizer for 30 minutes, and then it was placed in a constant temperature water bath at 35°C at 60...

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Abstract

The invention relates to a preparing method of an inorganic hydrous salt phase change microcapsule energy-storage material and belongs to preparing methods of energy-storage materials. The energy-storage material comprises a core material and a wall material, wherein the core material is prepared from one or more of calcium chloride hexahydrate, sodium sulfate decahydrate, sodium thiosulfate pentahydrate, disodium hydrogen phosphate dodecahydrate, sodium acetate trihydrate and sodium carbonate decahydrate inorganic hydrous salt, and the wall material is prepared from one or more of polystyrene, polymethyl methacrylate, poly(ethyl acrylate), polyurethane, cellulose acetate butyrate (CAB) and a diphenylmethane diisocyanate polymer, the core material accounts for 30-80% of the microcapsule energy-storage material by mass, and the wall material is prepared from the polymer and accounts for 20-70% of the microcapsule energy-storage material by mass. The phase change point of the obtained phase change microcapsule energy-storage material ranges from 20 DEG C to 90 DEG C, and the particle size ranges from 1 micrometer to 100 micrometers. The phase change microcapsule energy-storage material prepared with the method is high in encapsulation rate, good in sealing performance, large in phase change latent heat value, simple in preparing method and large in industrial application prospect.

Description

technical field [0001] The invention relates to an energy storage material and a preparation method, in particular to an inorganic hydrate salt phase change microcapsule energy storage material and a preparation method. Background technique [0002] With the rapid development of world economy and industry, energy shortage is becoming more and more serious. Especially after the first energy crisis in 1971, people began to pay attention to the research of renewable and sustainable green energy. At the same time, phase change energy storage technology has gradually attracted attention. Phase change energy storage technology uses the characteristic that phase change materials can absorb and release a large amount of latent heat of phase change during the phase change process, so as to realize energy storage, transportation and use, and solve the problem of energy mismatch in time and space , improve the utilization rate of energy. Phase change energy storage materials are wide...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 饶中浩刘臣臻张轩
Owner CHINA UNIV OF MINING & TECH
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