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Inorganic hydrous salt phase change energy storage microcapsule and preparation method thereof

An inorganic hydrated salt and phase change energy storage technology, which is applied in the direction of microcapsule preparation, microsphere preparation, energy storage, etc., can solve the problems of limiting the application of phase change energy storage materials, supercooled phase separation, etc., and overcome the phase separation phenomenon , reduce the degree of supercooling, good compactness effect

Inactive Publication Date: 2012-09-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two serious problems of supercooling and phase separation, which limit its application as a phase change energy storage material.

Method used

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  • Inorganic hydrous salt phase change energy storage microcapsule and preparation method thereof
  • Inorganic hydrous salt phase change energy storage microcapsule and preparation method thereof
  • Inorganic hydrous salt phase change energy storage microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh 15g Na with weighing paper 2 HPO 4 12H 2 O and 4.5g of deionized water were placed in a 100ml beaker, and heated in a constant temperature water bath at 37°C to achieve the first step of dehydration until all crystals of disodium hydrogen phosphate dodecahydrate melted and became liquid. Subsequently, 0.375 g of Span80 and 50 ml of organic solvent toluene were added, mixed uniformly under stirring and placed in an ultrasonic cell pulverizer for physical dispersion for 30 minutes to form an emulsion.

[0045] (2) Measure 12.5ml methyl methacrylate, 2.25ml ethyl acrylate and other solutions, 0.003g sodium polyacrylate, 0.0072g stearic acid, 0.0036g dibenzoyl peroxide, mix with 50mL volatile organic solvent acetone in a 100ml beaker, and physically dispersed in an ultrasonic cell pulverizer for 20 minutes to form a mixed solution.

[0046] (3) Put the emulsion obtained in step (1) into a 250ml round-bottomed three-neck flask, place it in an intelligent tempera...

Embodiment 2

[0050] (1) Weigh 15g Na with weighing paper 2 HPO 4 12H 2 0 and 3g of deionized water are contained in a 100ml beaker, and heated in a constant temperature water bath at 40°C to realize the first step of dehydration until all crystals of disodium hydrogen phosphate dodecahydrate melt and become liquid. Then 0.1875g of Span80 and 45ml of organic solvent carbon tetrachloride were added, mixed evenly under stirring and placed in an ultrasonic cell pulverizer for physical dispersion for 40 minutes to form an emulsion.

[0051] (2) Measure 15ml of methyl methacrylate, 2.7ml of ethyl acrylate and other solutions, 0.00225g of sodium polyacrylate, 0.006g of stearic acid, 0.003g of dibenzoyl peroxide, and mix them with 55mL of volatile organic solvent chloroform 100ml beaker, and physically dispersed in an ultrasonic cell pulverizer for 30 minutes to form a mixed solution.

[0052](3) Put the emulsion obtained in step (1) into a 250ml round-bottomed three-neck flask, place it in an ...

Embodiment 3

[0056] (1) Weigh 15g Na with weighing paper 2 HPO 4 12H 2 0 and 4g of deionized water were placed in a 100ml beaker, and heated in a constant temperature water bath at 37°C to achieve the first step of dehydration until all crystals of disodium hydrogen phosphate dodecahydrate melted and became liquid. Subsequently, 0.3 g of Span80 and 50 ml of organic solvent toluene were added, mixed uniformly under stirring and placed in an ultrasonic cell pulverizer for physical dispersion for 20 minutes to form an emulsion.

[0057] (2) Measure 7.5ml methyl methacrylate, 1.35ml ethyl acrylate and other solutions, 0.0015g sodium polyacrylate, 0.0036g stearic acid, 0.003g dibenzoyl peroxide, mix with 50mL volatile organic solvent acetone in a 100ml beaker, and physically dispersed in an ultrasonic cell pulverizer for 20 minutes to form a mixed solution.

[0058] (3) Put the emulsion obtained in step (1) into a 250ml round-bottomed three-neck flask, place it in an intelligent temperature-...

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Abstract

The invention discloses an inorganic hydrous salt phase change energy storage microcapsule and a preparation method thereof. According to the microcapsule, an inorganic hydrous salt phase change material serves as a core material, and a high polymer serves as a capsule wall material. By means of a selection of an appropriate organic solvent, a surface active agent serves as a supplement, polymer monomer materials of the core material and the capsule wall material form an evenly dispersed mixed solution under the ultrasonication action, by means of an addition of functional additives of an initiating agent, a lubricating agent, a stabilizing agent, and a retarder and the like, under the reaction condition, the polymer monomers are subjected to suspension polymerization and solidification in the mixed solution, and then the core material is coated by the polymer monomers to form a phase change energy storage microcapsule. The preparation method is simple in operation and low in equipment requirements, the preparation method range of an inorganic core microcapsule is effectively widened, and by means of the sealing form of the microcapsule, the problems of the supercool and the phase separation of the hydrous salt phase change material are solved.

Description

technical field [0001] The invention relates to an inorganic hydrated salt phase change energy storage microcapsule and a preparation method thereof. Specifically, the method of suspension polymerization-solvent volatilization is used to coat the inorganic hydrated salt phase change material (core material) in the polymer shell material (capsule material) to form the inorganic hydrated salt phase change energy storage microcapsule. Background technique [0002] Phase change materials (Phase Change Materials, PCMs) are substances that can undergo a phase change at a specific phase change temperature or a phase change temperature range, and absorb or release a large amount of phase change latent heat along with the phase change process, so Can be used for heat or cold storage. By the beginning of the 21st century, PCMs have been widely used in aerospace aircraft, new fighter jets, radar systems, solar thermal energy storage, building energy conservation, waste heat recovery, ...

Claims

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Application Information

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IPC IPC(8): C09K5/06B01J13/14
CPCY02E70/30
Inventor 黄金王婷玉祝盼盼
Owner GUANGDONG UNIV OF TECH
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