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Shape-stabilized phase-change composite material capable of efficiently utilizing solar energy and preparation method thereof

A technology of composite materials and shape-fixed phase change, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of low sunlight utilization rate and difficulty in effectively using visible light, etc., and achieve good composite effect, stable structure, and preparation The effect of simple method

Inactive Publication Date: 2015-11-11
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest defect of these reported shape-changing composite materials in terms of solar energy utilization is that it is difficult to effectively utilize visible light (visible light accounts for ~44% of solar energy), that is, it is difficult to efficiently convert visible light in sunlight into thermal storage. up, resulting in lower utilization of sunlight

Method used

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  • Shape-stabilized phase-change composite material capable of efficiently utilizing solar energy and preparation method thereof
  • Shape-stabilized phase-change composite material capable of efficiently utilizing solar energy and preparation method thereof
  • Shape-stabilized phase-change composite material capable of efficiently utilizing solar energy and preparation method thereof

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preparation example Construction

[0039] The preparation method of the shape-fixed phase-change composite material that can efficiently utilize solar energy described in this embodiment includes the following steps:

[0040] (1) Preparation of CuS nanopowder: (a) Weigh 2.00g of sodium sulfide into a 50mL beaker, add 20mL of deionized water, and stir at room temperature until the sodium sulfide is completely dissolved to obtain a sodium sulfide solution; (b) call Get 1.00g copper acetate and 1.46gEDTA and put into 250mL beaker, add 100mL deionized water, stir at room temperature until copper acetate and EDTA are all dissolved, obtain the solution of Cu-EDTA complex; (c) then stir under room temperature The two solutions were mixed slowly, and after mixing, they were stirred in a constant temperature water bath at 40°C for 5 hours. °C in a constant temperature drying oven to obtain CuS nanopowder.

[0041] (2) Preparation of paraffin-SiO 2 -CuS shape-changing composite material: Weigh 4.00g of paraffin, 1.50g ...

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Abstract

The invention provides a shape-stabilized phase-change composite material capable of efficiently utilizing solar energy. The composite material comprises an inorganic carrier propping material, an organic phase-change thermal storage material and a photothermal conversion nano-material, wherein the inorganic carrier propping material are filled with the organic phase-change thermal storage material and the photothermal conversion nano-material. The invention further provides a method for preparing the shape-stabilized phase-change composite material capable of efficiently utilizing solar energy. The method comprises the following steps: (1) preparing CuS nano-powder; and (2) preparing a paraffin-SiO2-CuS shape-stabilized phase-change composite material. The shape-stabilized phase-change composite material has the characteristics of relatively high thermal storage capacity and stable shape in the phase-change process, has a remarkable photothermal conversion capability, can be used for more effectively converting sunlight into thermal energy and storing the thermal energy, and is capable of providing a new approach to effective utilization of solar energy. The composite material prepared by adopting the method has the advantages of good dispersibility of components, excellent compounding effect and stable material structure.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, and in particular relates to a shape-fixed phase-change composite material capable of efficiently utilizing solar energy and a preparation method thereof. Background technique [0002] As a new energy-saving energy storage material, phase change materials have become a research hotspot in new materials and renewable energy utilization due to their unique advantages such as energy saving and environmental protection, easy availability of raw materials, and wide application range. Phase change materials store and utilize thermal energy by absorbing or releasing a large amount of latent heat when the material undergoes a phase change. Phase change energy storage materials not only have high energy density, but also use simple devices, small volume, flexible design, convenient use and easy management, and in the process of phase change energy storage, the material is approximately co...

Claims

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Application Information

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IPC IPC(8): C09K5/14
Inventor 李本侠郝勇敢聂士斌张凇铭邵先坤
Owner ANHUI UNIV OF SCI & TECH
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