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A shape-fixed phase-change composite material capable of efficiently utilizing solar energy and a preparation method thereof

A technology of composite materials and shape-fixed phase change, 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: 2018-02-23
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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  • A shape-fixed phase-change composite material capable of efficiently utilizing solar energy and a preparation method thereof
  • A shape-fixed phase-change composite material capable of efficiently utilizing solar energy and a preparation method thereof
  • A shape-fixed phase-change composite material capable of efficiently utilizing solar energy and a 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 of copper acetate and 1.46g of EDTA into a 250mL beaker, add 100mL of deionized water, and stir at room temperature until copper acetate and EDTA are completely dissolved to obtain a solution of the Cu-EDTA complex; (c) then stir at room temperature Slowly mix the two solutions, stir in a 40°C constant temperature water bath for 5 hours after mixing, then let the reaction solution stand to cool to room temperature, and finally collect the black product after repeated washing and centrifugation several times, and collect the collected black pro...

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Abstract

The invention provides a shape-fixed phase-change composite material that can efficiently utilize solar energy, which consists of an inorganic carrier support material, an organic phase-change heat storage material and a light-to-heat conversion nanometer material filled in the inorganic carrier support material. The present invention also provides a method for preparing the above-mentioned shape-fixed phase-change composite material capable of efficiently utilizing solar energy, comprising the following steps: (1) preparing CuS nanopowder, and (2) preparing paraffin-SiO2-CuS shape-set phase-change composite material. The shape-setting phase change composite material of the present invention not only has the characteristics of high heat storage capacity and stable shape during the phase change process, but also has remarkable light-to-heat conversion ability, which can more efficiently convert sunlight into Thermal energy storage provides a new way to achieve efficient use of solar energy. In the composite material obtained by adopting the preparation method of the above-mentioned shape-fixed phase-change composite material of the present invention, each component in the composite material has good dispersibility, good composite effect, and stable structure of the material.

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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Patent Type & Authority Patents(China)
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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