Preparation method of metal organic framework coated phase-change material microcapsule

A metal-organic framework and phase-change material technology, applied in the field of nanocomposite phase-change material preparation, can solve problems to be improved, and achieve the effects of short cycle, mild reaction conditions, and prevention of leakage

Inactive Publication Date: 2014-04-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the phase change material is greatly adsorbed on the surface of

Method used

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  • Preparation method of metal organic framework coated phase-change material microcapsule
  • Preparation method of metal organic framework coated phase-change material microcapsule
  • Preparation method of metal organic framework coated phase-change material microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0024] 1) Prepare 4 mL of copper sulfate solution with a concentration of 0.75 mol / L at room temperature, add 0.04 mol / L 1,3-propylenediamine solution, then let stand at room temperature for 2 hours, filter and wash, and dry at 60°C for 12 hours After obtaining the basic copper sulfate microspheres of yolk / shell structure;

[0025] 2) Disperse 0.003 mol of core-shell structure basic copper sulfate microspheres in 4 mL of ethanol and water mixed solution (the molar ratio of ethanol and water is 1:1), add 2 mL of 0.2 mol / L polyethylene glycol Alcohol 2000 aqueous solution, stirred for 2 h, then added 3 mL of ethanol solution with a concentration of 0.05 mol / L trimesic acid under stirring condition, reacted at room temperature for 1 h, filtered and washed, dried at 40 °C for 12 h to obtain metal The organic framework coats the phase change material microcapsules.

[0026] The SEM images of the obtained yolk / shell structure basic copper sulfate microspheres and metal-organic fram...

Embodiment example 2

[0028] 1) Prepare 4 mL of copper sulfate solution with a concentration of 0.75 mol / L at room temperature, add 0.004 mol / L 1,3-propylenediamine solution, then let stand at room temperature for 2 h, filter and wash, and dry at 60 °C After 12 h, basic copper sulfate microspheres with hollow structure were obtained;

[0029] 2) Disperse 0.003 mol of hollow structure basic copper sulfate microspheres in 4 mL of ethanol and water mixed solution (the molar ratio of ethanol and water is 1:1), add 2 mL of 0.2 mol / L polyethylene glycol 4000 aqueous solution, stirred for 2 hours, then added 3 mL of ethanol solution with a concentration of 0.05 mol / L trimesic acid under stirring conditions, reacted at room temperature for 1 hour, filtered and washed, and dried at 40 °C for 12 hours to obtain metal organic frameworks Coated phase change material microcapsules.

Embodiment example 3

[0031] 1) Prepare 4 mL of copper sulfate solution with a concentration of 0.75 mol / L at room temperature, add 0.04 mol / L of 1,3-propylenediamine solution, then stand at room temperature for 2 h, filter and wash, and dry at 60 °C Obtain the basic copper sulfate microsphere of yolk / shell structure after 12 h;

[0032] 2) Disperse 0.003 mol of core-shell structure basic copper sulfate microspheres in a mixed solution of 4 mL of ethanol and water (the molar ratio of ethanol and water is 1:1), add 2 mL of 0.5 mol / L carbonic acid decahydrate Sodium aqueous solution, stirred for 2 hours, then added 3 mL of ethanol solution with a concentration of 0.05 mol / L trimesic acid under stirring conditions, reacted at room temperature for 1 hour, filtered and washed, and dried at 40 °C for 12 hours to obtain metal organic frameworks Coated phase change material microcapsules.

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Abstract

The invention relates to a preparation method of a metal organic framework coated phase-change material microcapsule. The method comprises the steps that a basic copper sulfate microsphere in a hollow structure or a yolk/shell structure is prepared; a shell layer of the basic copper sulfate microsphere is assembled by nano sheets; a gap is formed between every two nano sheets; a phase-change material can enter the microsphere through the gaps of the shell layer of the basic copper sulfate microsphere; the shell layer is converted into a metal organic framework material in situ; a dense metal organic framework material shell layer is formed; the phase-change material is encapsulated and dried; and then the metal organic framework coated phase-change material microcapsule is prepared. The method has the advantages that 1) a novel metal organic framework coated phase-change material microcapsule is developed; 2) the prepared metal organic framework coated phase-change material microcapsule can effectively avoid leakage, corrosion and the like, and improve the heat conductivity of a composite; and 3) the method is mild in reaction condition, simple in technology and short in period, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanocomposite phase change materials, in particular to a preparation method of metal organic framework-coated phase change material microcapsules. Background technique [0002] With the increasingly tense energy and resources, the development of efficient energy storage and utilization technologies has become one of the most effective ways to alleviate the energy crisis and improve energy utilization efficiency. Phase change materials can undergo phase change within a certain temperature range and absorb or release a large amount of latent heat, becoming one of the most effective energy storage materials. Electronic devices and other fields have been widely used. [0003] The most widely used phase change materials are solid-liquid phase change materials, which have the advantages of high energy storage density, approximately constant temperature during the energy storage process, small vo...

Claims

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Application Information

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IPC IPC(8): B01J13/02C09K5/06
CPCY02P20/141
Inventor 王戈高鸿毅阿南栾奕马倩倩金召奎彭超豪杨穆
Owner UNIV OF SCI & TECH BEIJING
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