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Embedded heat conduction enhanced phase change energy storage microcapsules and preparation method thereof

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, achieve good heat conduction, improve heat conduction performance, and achieve good results

Active Publication Date: 2019-05-10
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 heat conduction enhanced phase change energy storage microcapsules and preparation method thereof
  • Embedded heat conduction enhanced phase change energy storage microcapsules and preparation method thereof
  • Embedded heat conduction enhanced phase change energy storage microcapsules and preparation method thereof

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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 in the above embodiment of the invention. The preparation method of phase change energy storage microcapsules in the embodiment of the present invention is as follows: image 3 As shown, it includes the following steps:

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

[0033] Step S02. Prepare the oil phase mixture into an emulsion: mix the oil phase mixture with an aqueous solution of an anionic emulsifier, and then emulsify at a temperature above the melting point of the oil-soluble phase change material to obtain an emulsion;

[0034]Step S03. Adding an organic amine mon...

Embodiment 1

[0053] A phase change energy storage microcapsule and a preparation method thereof, the structure of the phase change energy storage microcapsule is as follows 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 flake graphite 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 a melting point of 28°C, 3g of isophorone diisocyanate and 0.1g of 800-mesh flake graphite into a 50ml beaker, heat up to 40-60°C, stir magnetically until evenly mixed, and disperse by ultrasonic for 30 minutes, as an oil phase for later use. ...

Embodiment 2

[0061] A phase change energy storage microcapsule and a preparation method thereof, the structure of the phase change energy storage microcapsule is as follows figure 1 , 2 As shown, its 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 First, add 7g of phase-change energy storage wax with a melting point of 28°C, 3g of toluene diisocyanate, and 0.3g of 800-mesh flake graphite into a 50ml beaker, heat up to 40-60°C, stir magnetically until uniform, and disperse ultrasonically for 30 minutes. Reserve the oil phase.

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

[0065] S23 Transfer the emulsion in step S22 into a 250ml three-necked flask, keep the te...

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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, in particular to a phase change energy storage microcapsule and a preparation method thereof. Background technique [0002] The technology of using the phase change latent heat of phase change materials to store thermal energy has the advantages of high energy storage density, approximately isothermal heat storage and discharge process, and easy control of the process, which can improve energy utilization and realize intelligent temperature control functions. It has been used in microclimate regulation It shows broad application prospects in improving human comfort. In order to overcome the problems of phase change material leakage, corrosion, and poor stability in long-term use, at home and abroad, the phase change material is generally encapsulated into energy microspheres by means of microcapsule technology, thereby preparing a composite phase change material with...

Claims

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Application Information

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Patent Type & Authority Patents(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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