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Preparation method of inorganic material-coated phase change microcapsule, product prepared thereby and application of product

A technology of phase change microcapsules and inorganic materials, applied in the field of energy storage materials, can solve the problems of limited application and difficult realization of phase change microcapsules

Active Publication Date: 2017-11-24
中科世宇(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of production capacity, it is still difficult to prepare large quantities of phase-change microcapsules coated with inorganic materials; moreover, the amount of phase-change materials coated with inorganic materials in the existing reports is much lower than that of The amount of phase change material coated in organic material-coated phase change microcapsules; these defects seriously limit its application in actual production

Method used

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  • Preparation method of inorganic material-coated phase change microcapsule, product prepared thereby and application of product
  • Preparation method of inorganic material-coated phase change microcapsule, product prepared thereby and application of product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Take 10 g of tetrabutyl titanate, 2 g of aminopropyltrimethoxysilane and 1 g of phenyltrimethoxysilane and add them into 30 g of molten n-octadecane, and mix them thoroughly to form a dispersed phase. Get 2.5g of sodium lauryl sulfate and add it to 50g of water as the continuous phase, and use the concentration of 2mol / L hydrochloric acid to adjust the pH of the continuous phase to 2.5. The dispersed phase was added to the continuous phase, and emulsified by ultrasound. The emulsification time was 30 minutes, and the frequency of the ultrasound was 10000 Hz. The obtained emulsion was transferred to a three-necked flask, and reacted at 70° C. for 12 hours under mechanical stirring. The phase change microcapsule dry powder is obtained through separation, washing and further drying.

[0064] The scanning electron micrographs of the phase-change microcapsules coated with inorganic materials prepared in this example are as follows: figure 1 shown. from figure 1 It can be ...

Embodiment 2

[0068] Take 6g of tetraethyl orthosilicate, 0.5g of glycidyltrimethoxysilane and 0.5g of phenyltriethoxysilane and add them into 30g of molten octadecane, and mix them thoroughly as the dispersed phase. Add 1g of Tween 80 to 50g of water as the continuous phase. Add the dispersed phase to the continuous phase, use a high-speed shear emulsifier to emulsify at 10,000 rpm for 10 min, transfer the obtained emulsion to a three-necked flask, and react at 70°C for 12 hours under mechanical stirring. The phase change microcapsule dry powder is obtained through separation, washing and further drying.

[0069] In the phase-change microcapsules coated with inorganic materials prepared in this example, the mass percentage of the core material in the phase-change microcapsules is 83%; the mass percentage of the wall material in the phase-change microcapsules is 17%; the phase transition temperature of the phase change microcapsules coated with inorganic materials is 20°C; the latent heat ...

Embodiment 3

[0071] Take 10 g of ethyl orthosilicate, 0.5 g of aminopropyltrimethoxysilane and 0.5 g of n-octyltriethoxysilane and add them into 30 g of molten octadecane, and mix them thoroughly as the dispersed phase. Add 1g of Tween 80 to 50g of water as the continuous phase. Add the dispersed phase to the continuous phase, use a high-speed shear emulsifier to emulsify at 10,000 rpm for 10 min, transfer the obtained emulsion to a three-necked flask, and react at 70°C for 12 hours under mechanical stirring. The phase change microcapsule dry powder is obtained through separation, washing and further drying.

[0072] In the phase-change microcapsules coated with inorganic materials prepared in this embodiment, the mass percentage of the core material in the phase-change microcapsules is 85%; the mass percentage of the wall material in the phase-change microcapsules is 15%; the phase transition temperature of the phase change microcapsules coated with the inorganic material is 28°C; the la...

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Abstract

The invention discloses a preparation method of an inorganic material-coated phase change microcapsule, a product prepared thereby and an application of the product. The inorganic material-coated phase change microcapsule is obtained in one step through sol-gel reaction on an emulsion interface. No toxic substance is generated in the preparation process of the inorganic material-coated phase change microcapsule and the preparation process is green and environmentally friendly; the phase change and energy storage microcapsule prepared through the preparation method is high in coating rate and low in breakage rate, the supercooling degree of the sol-liquid phase change material is effectively reduced, the obtained phase change material is free of a volatile gas and safe in use, and the application range is expanded; the preparation method is simple in process and low in cost, the used raw materials are cheap and available and industrialization is easy to implement; and the phase change and energy storage microcapsule can be widely applied to the fields, such as spinning, building energy conservation, thermal management of electronic components and waste heat recovery.

Description

technical field [0001] The invention belongs to the technical field of energy storage materials, and in particular relates to a preparation method of a phase-change microcapsule coated with an inorganic material, a product and an application thereof. Background technique [0002] With the continuous improvement of people's living standards, the shortage of non-renewable energy is becoming more and more serious. In recent years, in order to reduce energy consumption and further achieve the purpose of energy saving and energy storage, researchers have invested a lot of time, manpower and material resources. In the research of phase change energy storage technology, the development of phase change energy storage materials is the most concerned. The application of room temperature phase change materials in building energy saving can effectively reduce indoor temperature fluctuations and reduce energy consumption. [0003] Phase-change energy storage materials (hereinafter refe...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 杨振忠纪旭阳梁福鑫
Owner 中科世宇(北京)科技有限公司
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