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Organic/laminated, layer-chain clay mineral nano composite energy-storage material and its preparing method

A clay mineral and nanocomposite technology, applied in the field of energy storage materials, can solve the problems of low energy storage density and achieve stable energy storage performance, convenient operation, and high phase change enthalpy

Inactive Publication Date: 2006-11-15
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the energy storage density of such energy storage materials is relatively small

Method used

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  • Organic/laminated, layer-chain clay mineral nano composite energy-storage material and its preparing method
  • Organic/laminated, layer-chain clay mineral nano composite energy-storage material and its preparing method
  • Organic/laminated, layer-chain clay mineral nano composite energy-storage material and its preparing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, the layered or layered chain clay mineral is organic montmorillonite, the organic solid-liquid phase change energy storage material is paraffin, and the weight ratio of paraffin in the composite energy storage material is not more than 60%.

[0019] The preparation process is:

[0020] a. Add 14g of paraffin to 10g of organic montmorillonite with a particle size of <76μm, and mix well;

[0021] b. Heat to 80°C to make the paraffin wax melt, and keep stirring in this state to fully mix it until it is completely compounded;

[0022] c. Cool to room temperature to obtain the paraffin / montmorillonite composite energy storage material.

[0023] As shown in Figure 1, comparing the X-ray diffraction patterns of paraffin / montmorillonite composite energy storage materials and organic montmorillonite, it can be seen that after intercalation compounding, the interlayer distance of montmorillonite changes from 19.708 Ȧ to 19.447 Ȧ, which is It shows that the p...

Embodiment 2

[0028] In this embodiment, the organic clay mineral is organic montmorillonite, the organic solid-liquid phase change energy storage material is stearic acid, and the weight ratio of stearic acid in the composite energy storage material is not more than 75%.

[0029] The preparation process is:

[0030] a. Add 25g of stearic acid to 10g of organic montmorillonite with a particle size of <76 μm, and mix well;

[0031] b. Heat to 80°C to make the stearic acid melt, and keep stirring in this state to make it fully mixed until it is completely compounded;

[0032] c. Cool to room temperature to obtain the stearic acid / montmorillonite composite energy storage material.

[0033] X-ray diffraction pattern such as figure 2 shown by figure 2 It can be seen that after intercalation compounding, the interlayer spacing of montmorillonite changes from 19.708 Ȧ to 20.532 Ȧ, which indicates that stearic acid molecules enter the interlayer of montmorillonite, causing the interlayer spacing...

Embodiment 3

[0038] In this embodiment, the organic clay mineral is organic montmorillonite, the organic solid-liquid phase change energy storage material is lauric acid, and the weight ratio of lauric acid in the composite energy storage material is not more than 70%.

[0039] The preparation process is:

[0040] a. Add 24g of lauric acid to 10g of organic montmorillonite with particle size <76μm, and mix well;

[0041] b. Heat to 70°C to make the lauric acid melt, and keep stirring in this state to make it fully mixed until it is completely compounded;

[0042] c. Cool to room temperature to obtain the lauric acid / montmorillonite composite energy storage material.

[0043] Its X-ray diffraction pattern is as image 3 shown, from image 3 It can be seen that after intercalation compounding, the interlayer spacing of montmorillonite changes from 19.708 Ȧ to 17.946 Ȧ, which indicates that lauric acid molecules enter the interlayer of montmorillonite, causing the interlayer spacing to cha...

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Abstract

The organic / layered, layered chain clay mineral nanocomposite energy storage material and its preparation method are characterized in that layered or layered chain clay minerals are used as a matrix, and organic solid-liquid phase change energy storage materials are inserted between the layers. The organic solid-liquid phase change energy storage material exists in the interlayer of clay minerals in nanometer size; its preparation is to use the melting intercalation method to fully mix the layered or layer chain clay minerals with the organic solid-liquid phase change energy storage material, Carry out melt intercalation until complete recombination, and obtain it after cooling. During the phase change process of the composite energy storage material of the present invention, no liquid phase is generated, no container is required, the phase change enthalpy is relatively high, and the energy storage performance is relatively stable. A new type of organic / inorganic nanocomposite energy storage material that combines the sensible heat energy storage performance of chain clay minerals and the filler function.

Description

Technical field: [0001] The invention relates to organic solid-liquid phase change latent heat energy storage materials and layered and layered chain clay mineral sensible heat energy storage materials, especially energy storage materials composed of these two types of materials Background technique: [0002] At present, the organic solid-liquid phase change latent heat energy storage materials widely used at home and abroad include: (1) paraffins; (2) fatty acids; (3) other organic substances. These energy storage materials have the characteristics of high latent heat of fusion, appropriate phase transition temperature, non-toxicity, and low price. However, since this kind of energy storage material has a liquid phase during the phase change process and has a certain degree of fluidity, it needs to be contained in a container when used and the container must be sealed to prevent leakage and corrosion of equipment or pollution of the environment. This shortcoming greatly li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
Inventor 于少明蒋长龙
Owner HEFEI UNIV OF TECH
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