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Organic phase change energy storage material based on inorganic material casing packaging and preparation method thereof

A technology of energy storage materials and inorganic materials, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of restricting the use of phase change energy storage materials, reducing heat storage performance, affecting heat storage performance, etc. Effects of thermal stability and thermal conductivity, small volume change of phase transition, and low preparation cost

Inactive Publication Date: 2014-07-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most inorganic phase change energy storage materials are corrosive, and have disadvantages such as supercooling and phase separation during the phase change process, which affect their heat storage performance; while organic phase change energy storage materials are not only less corrosive, but also in There are almost no disadvantages such as phase separation during the phase change process, and it has the advantages of stable chemical properties and low price.
However, organic phase change energy storage materials have disadvantages such as low thermal conductivity, which reduces their thermal storage performance.
In addition, since the phase change energy storage material becomes liquid when it absorbs heat and melts, it needs container packaging, which also limits the application occasions of the phase change energy storage material

Method used

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  • Organic phase change energy storage material based on inorganic material casing packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of organic phase change energy storage material paraffin emulsion

[0030] Add 20 grams of paraffin organic phase-change energy storage material, 150 milliliters of distilled water and 3 grams of sodium lauryl sulfate into a beaker, stir the mixed solution at 800 rpm for 60 minutes, and control the temperature at 70°C . An organic phase change energy storage material paraffin emulsion was prepared.

[0031] (2) Preparation of inorganic silica sol solution

[0032] 15 grams of methyltriethoxysilane, 15 grams of absolute ethanol and 25 grams of distilled water were added to another beaker, and a little hydrochloric acid was added to the beaker to adjust the pH value of the mixture to 2-3. The mixture was stirred at 50°C for 30 minutes at a rotational speed of rpm. A micro-encapsulation precursor inorganic silica sol solution was prepared.

[0033] (3) Preparation of organic phase change energy storage materials with microencapsulation of inorgani...

Embodiment 2

[0038] (1) Preparation of organic phase change energy storage material paraffin emulsion

[0039] Add 17 grams of paraffin organic phase-change energy storage material, 120 milliliters of distilled water and 2.5 grams of sodium lauryl sulfate into a beaker, stir the mixed solution at 800 rpm for 60 minutes, and control the temperature at 75°C . An organic phase change energy storage material paraffin emulsion was prepared.

[0040] (2) Preparation of inorganic silica sol solution

[0041] 20 grams of methyltriethoxysilane, 20 grams of absolute ethanol and 30 grams of distilled water were added to another beaker, and a little hydrochloric acid was added to the beaker to adjust the pH value of the mixture to 2-3. The mixture was stirred at 55°C for 30 minutes at a rotational speed of rpm. A micro-encapsulation precursor inorganic silica sol solution was prepared.

[0042] (3) Preparation of organic phase change energy storage materials with microencapsulation of inorga...

Embodiment 3

[0047] (1) Preparation of organic phase change energy storage material paraffin emulsion

[0048] Add 15 grams of paraffin organic phase-change energy storage material, 100 milliliters of distilled water and 2 grams of sodium lauryl sulfate into a beaker, stir the mixed solution at 800 rpm for 60 minutes, and control the temperature at 80°C . An organic phase change energy storage material paraffin emulsion was prepared.

[0049] (2) Preparation of inorganic silica sol solution

[0050] 25 grams of methyltriethoxysilane, 25 grams of absolute ethanol and 40 grams of distilled water were added to another beaker, and a little hydrochloric acid was added to the beaker to adjust the pH value of the mixture to 2-3. The mixture was stirred at 60°C for 30 minutes at a rotational speed of rpm. A micro-encapsulation precursor inorganic silica sol solution was prepared.

[0051] (3) Preparation of organic phase change energy storage materials with microencapsulation of inorgani...

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Abstract

The invention discloses an organic phase change energy storage material encapsulated based on an inorganic material shell, which encapsulates the outside of the paraffin organic phase change energy storage material with an inorganic silicon dioxide shell material. The invention also discloses a preparation method of the organic phase-change energy storage material encapsulated based on the inorganic material shell. The invention adopts the inorganic material shell to microencapsulate the organic phase change energy storage material, which can suppress the flammability of the organic phase change energy storage material, and at the same time can block the mutual influence between the organic phase change energy storage material and the external environment.

Description

technical field [0001] The invention belongs to the field of phase-change energy storage materials, and in particular relates to an organic phase-change energy storage material encapsulated by an inorganic material shell and a preparation method thereof. Background technique [0002] Phase change energy storage materials absorb heat from the environment during the phase change process, and release heat to the environment when needed, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in the fields of solar heat utilization and heat recovery. [0003] A phase change energy storage material is a material that absorbs heat when it melts and releases heat when it condenses. At present, the commonly used phase change energy storage materials mainly include inorganic substances and organic substances. Most inorganic phase change energy storage materials are corrosive, and have disadvant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
Inventor 方贵银单锋曹磊陈智李辉
Owner NANJING UNIV
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