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Embedded type phase-change energy storage microcapsule with enhanced heat conduction and preparation method of microcapsule

A technology of phase change energy storage and microcapsules, which is applied in the direction of microcapsule preparation, preparation of microspheres, chemical instruments and methods, etc., can solve the problems of preparation methods that are harmful to health and environmental protection, thermal conductivity and stability of phase change energy storage microcapsules. Advanced problems, to achieve good heat conduction, improve heat conduction performance, structure and performance stability

Active Publication Date: 2015-07-29
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provide a phase-change energy storage microcapsule and its preparation method to solve the problem that the existing phase-change energy storage microcapsules have low thermal conductivity and stability, and the preparation method is harmful to health. and environmental technical issues

Method used

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  • Embedded type phase-change energy storage microcapsule with enhanced heat conduction and preparation method of microcapsule
  • Embedded type phase-change energy storage microcapsule with enhanced heat conduction and preparation method of microcapsule
  • Embedded type phase-change energy storage microcapsule with enhanced heat conduction and preparation method of microcapsule

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preparation example Construction

[0031] Correspondingly, the embodiment of the present invention also provides a preparation method of the phase-change energy storage microcapsules of the above-mentioned invention embodiment. The preparation method of the phase change energy storage microcapsules of the embodiment of the present invention is as follows: image 3 As shown, it includes the following steps:

[0032] Step S01. Preparation of an oil phase mixture containing flake graphite: mixing the oil-soluble phase change material, diisocyanate monomer and flake graphite with a melting point of 10-70°C at a temperature above the melting point of the oil-soluble phase change material, Obtain an oil phase mixture;

[0033] Step S02. The oil phase mixture is formulated into an emulsion: the oil phase mixture is mixed with an aqueous solution of an anionic emulsifier and then emulsified at a temperature above the melting point of the oil-soluble phase change material to obtain an emulsion;

[0034] Step S03. Adding organ...

Embodiment 1

[0053] A phase change energy storage microcapsule and a preparation method thereof. The phase change energy storage microcapsule has a structure such as figure 1 , 2 As shown, it includes a microcapsule shell and a phase change composite core material arranged in the microcapsule shell. Wherein, the phase change composite core material includes an oil-soluble organic phase change material with a melting point of 10-70°C and flake graphite doped in the oil-soluble organic phase change material; the microcapsule shell is doped with flakes Graphite polyurea compound.

[0054] The preparation method of phase change energy storage microcapsules is as follows:

[0055] S11 first add 7g of phase-change energy storage wax with melting point of 28℃, 3g of isophorone diisocyanate and 0.1g of 800 mesh flake graphite in a 50ml beaker, heat to 40-60℃, magnetically stir until it is evenly mixed, and ultrasonically disperse for 30 Minutes, as the oil phase for standby.

[0056] S12 Add 1.5g of st...

Embodiment 2

[0061] A phase change energy storage microcapsule and a preparation method thereof. The phase change energy storage microcapsule has a structure such as figure 1 , 2 As shown, the structure is the same as the phase change energy storage microcapsule in Example 1.

[0062] The preparation method of phase change energy storage microcapsules is as follows:

[0063] S21 firstly add 7g of phase change energy storage wax with melting point of 28℃, 3g of toluene diisocyanate and 0.3g of 800 mesh flake graphite in a 50ml beaker. The temperature is raised to 40-60℃, magnetically stirred until it is uniformly mixed, and ultrasonic dispersion is used for 30 minutes. The oil phase is reserved.

[0064] S22 Add 1.5g of sodium dodecylbenzene sulfonate and 50ml of deionized water in a 100ml beaker, mix well, add the oil phase mixture of step S21, and disperse at 5000r / min for 20 minutes at 50°C to obtain a water packet Oil emulsion.

[0065] S23 transfer the emulsion of step S22 into a 250ml three-...

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Abstract

The invention discloses a phase-change energy storage microcapsule and a preparation method thereof. The phase-change energy storage microcapsule comprises a microcapsule shell and a phase-change compound core material arranged in the microcapsule shell, wherein the phase-change compound core material comprises an oil-soluble organic phase-change material with the melting point being 10-70 DEG C and flake graphite doped in the oil-soluble organic phase-change material; the microcapsule shell is a polyurea compound doped with flake graphite. The preparation method of the phase-change energy storage microcapsule comprises the following steps: an oil phase mixture containing flake graphite is prepared; an emulsion is prepared from the oil phase mixture; an organic amine monomer is added to the emulsion for a polymerization reaction; and the like. The phase-change energy storage microcapsule has high mechanical properties, good heat conduction and good phase-change energy storage effect. The preparation method of the phase-change energy storage microcapsule has the advantages of high efficiency and easiness in process control, so that the prepared phase-change energy storage microcapsule has stable structure and performance.

Description

Technical field [0001] The invention belongs to the technical field of phase change energy storage materials, and particularly relates to a phase change energy storage microcapsule and a preparation method thereof. Background technique [0002] The technology of using the latent heat of phase change material to store thermal energy has the advantages of high energy storage density, similar heat storage and release process, and easy control of the process. It can improve energy efficiency and realize intelligent temperature control function. It has been used in microclimate regulation And to improve the comfort of the human body shows a wide range of application prospects. In order to overcome the problems of phase change material leakage, corrosivity, and poor long-term use stability, domestic and foreign generally use microcapsule technology to encapsulate phase change materials into energy microspheres, thereby preparing composite shaped phase change materials. The process is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06B01J13/16
Inventor 陈大柱刑锋欧阳星徐枫媛张翮陈雪飞汤皎宁
Owner SHENZHEN UNIV
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