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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 preparations, preparation of microspheres, chemical instruments and methods, etc., can solve problems such as poor temperature resistance, leakage, and inability to adapt to high-temperature environments, and prevent flow and seepage leaky effect

Active Publication Date: 2021-03-23
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase change point of the prepared phase change microcapsule composite material is between 20 and 90°C, and the particle size is 1 to 100 μm; the temperature resistance of the phase change microcapsule energy storage material is poor, and due to the liquid phase The random flow of inorganic hydrated salts is likely to cause leakage, and this kind of organic hydrated salt phase change microcapsule energy storage material has poor temperature resistance and cannot adapt to the requirements of high temperature environments

Method used

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  • Phase change energy storage microcapsules and preparation method thereof
  • Phase change energy storage microcapsules and preparation method thereof
  • Phase change energy storage microcapsules and preparation method thereof

Examples

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Embodiment 1

[0027] The method for preparing phase change energy storage microcapsules comprises the following steps:

[0028] 1) Preparation of the core material emulsion: first mix attapulgite and paraffin to obtain a composite phase change material, the specific preparation process of the composite phase change material includes: A, firstly ultrasonically oscillates the attapulgite to disperse evenly, and then in ultrasonic stirring Add the molten paraffin drop by drop to the attapulgite to obtain the mixture under certain conditions; B. After the dropwise addition, oscillate the mixture ultrasonically for 45 minutes; C. Put it in a vacuum environment at 65°C and keep it warm for 12 hours.

[0029] Then add deionized water to the composite phase change material to make a saturated solution of the composite phase change material, the mixing mass ratio of the composite phase change material and deionized water is 1:1, and finally add an emulsifier to the composite phase change material sat...

Embodiment 2

[0036] The method for preparing phase change energy storage microcapsules comprises the following steps:

[0037] 1) Preparation of core material emulsion: firstly, porous silicon dioxide and octadecane are mixed to obtain a composite phase change material, and the specific preparation process of the composite phase change material includes: A, first ultrasonic vibration makes the porous silicon dioxide uniformly dispersed, and then Under the condition of ultrasonic stirring, molten octadecane was added dropwise to the porous silica to obtain a mixture; B. After the addition, the mixture was ultrasonically oscillated for 15 minutes; C. Placed in a vacuum environment at 55° C. for 13 hours.

[0038]Add deionized water to composite phase change material again to make composite phase change material saturated solution, the mixing mass ratio of composite phase change material and deionized water is 2:7, finally add emulsifier in composite phase change material saturated solution: ...

Embodiment 3

[0045] The method for preparing phase change energy storage microcapsules comprises the following steps:

[0046] 1) Preparation of the core material emulsion: first, diatomite and lauric acid are mixed to obtain a composite phase-change material. The specific preparation process of the composite phase-change material includes: A. First, ultrasonic vibration is used to disperse the diatomite evenly, and then ultrasonic stirring Add molten lauric acid drop by drop to diatomaceous earth under certain conditions to obtain a mixture; B. After the addition, ultrasonically oscillate the mixture for 35 minutes; C. Put it in a vacuum environment at 63°C and keep it warm for 14 hours.

[0047] Then add deionized water to the composite phase change material to make a saturated solution of the composite phase change material, the mixing mass ratio of the composite phase change material and deionized water is 1:2, and finally add an emulsifier to the composite phase change material saturat...

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Abstract

The invention relates to the field of phase change energy-storage materials and particularly relates to a phase change energy-storage microcapsule and a preparation method thereof. The phase change energy-storage microcapsule designed by the invention comprises a core material and a wall material. The wall material is a high molecular polymer. The core material is a composite phase change materialprepared by vacuum fusing and adsorbing the phase change material into inorganic powder. The method for preparing the phase change energy-storage microcapsule comprises the following steps: 1) preparing a core material emulsion; 2) preparing a wall material solution; and 3) dropwise adding the core material emulsion into the wall material solution and stirring the mixture till an organic solventis fully volatilized, and then performing suction filtration, washing and drying successively to obtain the powdery phase change energy-storage microcapsule. The phase change energy-storage microcapsule provided by the invention not only has a relatively great phase change potential heat value and relatively good sealing property, but also has a double temperature-resistant protecting property.

Description

technical field [0001] The invention relates to the field of phase change energy storage materials, in particular to a phase change energy storage microcapsule and a preparation method thereof. Background technique [0002] With the development of the global economy, people have begun to pay attention to the research of renewable and sustainable green energy, so the phase change energy storage technology with temperature-regulated energy storage has gradually attracted people's attention. The research focus of phase change energy storage technology lies in the development and research of phase change energy storage materials. The energy storage and energy release are realized by the phase change energy storage materials absorbing and releasing heat during the phase change process. The phase change methods of phase change energy storage materials mainly include solid-solid phase change and solid-liquid phase change, which are divided into inorganic phase change materials and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B01J13/12
Inventor 赵青华王栋牛应买梅涛毛秦岑罗宇
Owner WUHAN TEXTILE UNIV
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