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Phase change energy storing material having photo-thermal conversion performance and preparation method of same

A technology of phase-change energy storage materials and light-to-heat conversion materials, which is applied in the direction of heat exchange materials, microsphere preparation, chemical instruments and methods, etc., can solve the problems of climate and season influence, low solar radiation energy density, and direct utilization limitations And other issues

Inactive Publication Date: 2018-01-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solar radiation has the disadvantages of low energy density and strong influence of climate and seasons, which limits its direct use.

Method used

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  • Phase change energy storing material having photo-thermal conversion performance and preparation method of same
  • Phase change energy storing material having photo-thermal conversion performance and preparation method of same
  • Phase change energy storing material having photo-thermal conversion performance and preparation method of same

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preparation example Construction

[0090] According to an aspect of the embodiments of the present invention, a phase-change energy storage material I with light-to-heat conversion performance and a preparation method thereof are provided, and the specific steps are as follows:

[0091] (1) Mix the phase change material with an emulsifier and emulsify it at 20-100°C to obtain an emulsion (referred to as core material I), or directly use the phase change material as the inner core (record as core material II);

[0092] (2) Use any one of the following methods (a), (b) and (c) to prepare the shell material and encapsulate the core material I:

[0093] (a) Prepare the organic shell material by any method of in-situ polymerization, interfacial polymerization, suspension polymerization, and complex coacervation: add the solution of the organic polymerization system (referred to as shell solution A) dropwise to the inner core I and keep stirring, the finally obtained shell is an organic material (referred to as shell...

Embodiment 1

[0111] This embodiment provides a phase-change energy storage material with light-to-heat conversion performance, and specifically relates to a phase-change energy storage material I with a light-to-heat conversion material embedded in the shell material B', and its preparation method is as follows:

[0112] (1) Preparation of inner core material I: Weigh 10g of solid paraffin (58-60° C. of melting point) and put it into a three-necked flask and heat and melt it in a water bath at 70° C. (Sodium DodecylSulfate, SDS) was emulsified to obtain an emulsion.

[0113] (2) Prepare shell material B' by sol-gel method and encapsulate inner core material I: mix 20ml tetraethyl orthosilicate, 20ml absolute ethanol, 40ml distilled water and 1ml hydrochloric acid, add 0.1g Ti 4 o 7 Stir the powder for 0.5-1h, then add the mixed solution dropwise into the emulsion obtained in step (1), and continue stirring for 0.5-2h to obtain a shell material of SiO 2 Mosaic Ti 4 o 7 Particle phase ch...

Embodiment 2

[0115] This embodiment provides a phase-change energy storage material with light-to-heat conversion performance, and specifically relates to a phase-change energy storage material I whose inner core material I' contains a light-to-heat conversion material. The preparation method is as follows:

[0116] (1) Preparation of inner core material I': Weigh 10g of solid paraffin (melting point 58-60°C) into a three-necked flask, heat and melt in a water bath at 70°C, emulsify with 150ml of SDS with a mass concentration of 0.3wt%, and obtain Emulsion, add 0.1g Ti 4 o 7 Stir the powder until evenly dispersed in the emulsion.

[0117] (2) Prepare shell material B by sol-gel method and encapsulate inner core material I': mix and stir 20ml tetraethyl orthosilicate, 20ml absolute ethanol, 40ml distilled water and 1ml hydrochloric acid for 0.5-1h, then mix the mixed solution Add dropwise to the above emulsion, continue to stir for 0.5~2h, and the shell material is SiO 2 , the inner core...

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Abstract

The invention provides a phase change energy storing material having photo-thermal conversion performance and a preparation method of same. The phase change energy storing material includes two types,one is a phase change energy storing material (I) of which the inner core and / or the shell contains a photo-thermal conversion material, and the other is a composite shaped phase change energy storing material (II) which contains the photo-thermal conversion material. The phase change energy storing material has excellent photo-thermal conversion performance, can convert solar energy into thermalenergy and stores the thermal energy, and can be applied to the fields such as solar energy utilization, industrial waste heat recovery, energy saving of buildings, heating and air conditioning systems, aerospace, textile fibers, etc.

Description

technical field [0001] The invention belongs to the technical field of phase-change energy storage materials, and in particular relates to a phase-change energy storage material with light-to-heat conversion performance and a preparation method thereof. Background technique [0002] The problem of energy shortage in today's society is becoming more and more serious, and the contradiction between energy supply and demand in time and space is gradually intensified. At the same time, the massive consumption of fossil fuels leads to global warming and the continuous deterioration of the ecological environment. Energy conservation and the development of renewable energy have become the focus of people's attention. . [0003] Thermal Energy Storage is an effective method to solve the problems of energy shortage and uneven distribution in time and space, and it is an effective means to improve energy utilization and protect the environment. Energy storage methods include mechanica...

Claims

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Application Information

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IPC IPC(8): C09K5/06C09K5/14B01J13/22
Inventor 李建强李晓禹张英马晨雨
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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