Composite phase change energy storage microcapsules and preparation method thereof

A phase-change energy storage and microcapsule technology, which is applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problems of phase-change energy storage microcapsules thermal conductivity, low stability, preparation method hazards to health and Environmental protection and other issues, to achieve good heat conduction, improve heat conduction performance, and improve efficiency

Active Publication Date: 2019-01-08
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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  • Composite phase change energy storage microcapsules and preparation method thereof
  • Composite phase change energy storage microcapsules and preparation method thereof
  • Composite phase change energy storage microcapsules and preparation method thereof

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preparation example Construction

[0030] 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: figure 1 As shown, it includes the following steps:

[0031] Step S01. Preparation of an oil phase mixture containing carbon nanotubes: mixing an oil-soluble phase change material with a melting point of 10-70° C., a diisocyanate monomer, and carbon nanotubes at a temperature above the melting point of the oil-soluble phase change material Process to obtain the oil phase mixture;

[0032] 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;

[0033]Step S03. Addin...

Embodiment 1

[0052] A phase change energy storage microcapsule and a preparation method thereof, the structure of the phase change energy storage microcapsule is as follows figure 2 As shown, it includes a microcapsule shell 1 and a phase change composite core material 2 arranged in the microcapsule shell 1 . Wherein, the phase-change composite core material 2 includes an oil-soluble organic phase-change material with a melting point of 10-70° C. and carbon nanotubes 3 doped in the oil-soluble organic phase-change material; the microcapsule shell 1 is Polyurea compound doped with carbon nanotubes 3 .

[0053] The preparation method of phase change energy storage microcapsules is as follows:

[0054] S11 First, add 7g of n-octadecane, 3g of isophorone diisocyanate and 0.1g of aminated multi-walled carbon nanotubes (length ~ 50μm) into a 50ml beaker, heat up to 40-60°C, magnetically stir until evenly mixed, and ultrasonically Disperse for 30 minutes and set aside as the oil phase.

[005...

Embodiment 2

[0060] A phase change energy storage microcapsule and a preparation method thereof, the structure of the phase change energy storage microcapsule is as follows figure 2 As shown, its structure is the same as the phase change energy storage microcapsule in Example 1.

[0061] The preparation method of phase change energy storage microcapsules is as follows:

[0062] S21 First, add 7g of n-octadecane, 3g of toluene diisocyanate and 0.3g of short multi-walled carbon nanotubes (length<2μm) into a 50ml beaker, heat up to 40-60°C, stir magnetically until evenly mixed, and disperse by ultrasonic for 30 minutes. Reserve as an oil phase.

[0063] S22 Add 1.5g of sodium dodecylbenzene sulfonate and 50ml of deionized water into a 100ml beaker, mix well, add the oil phase mixture in step S21, and disperse at 50°C for 20 minutes at a speed of 5000r / min to obtain a water package oil emulsion.

[0064] S23 Transfer the emulsion in step S22 into a 250ml three-necked flask, keep the temper...

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Abstract

A phase-change energy-storage microcapsule and a preparing method thereof are disclosed. The microcapsule comprises a microcapsule shell and a phase-change composite core material disposed in the microcapsule shell, wherein the phase-change composite core material comprises an oil-soluble organic phase-change material having a melting point of 10-70 DEG C and carbon nano-tubes doped in the oil-soluble organic phase-change material, and the microcapsule shell is a polyurea compound doped with carbon nano-tubes. The preparing method includes: a step of preparing an oil phase mixture containing the carbon nano-tubes, a step of preparing the oil phase mixture into an emulsion, a step of adding an organic amine monomer into the emulsion to perform polymerization, and other steps. The microcapsule is high in mechanical performance, good in heat conduction performance, and good in phase-change energy-storage effects. The preparing method is high in efficiency and easily controllable in process, so that the prepared microcapsule is stable in 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): C09K5/06B01J13/14
Inventor 陈大柱刑锋陈艳欧阳星徐素真叶星汤皎宁
Owner SHENZHEN UNIV
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