Preparation method of phase change energy storage material

A technology of phase-change energy storage materials and materials, which is applied in the field of preparation of phase-change energy storage materials, can solve the problems of high price and less use alone, and achieve the effect of overcoming supercooling and phase separation, and overcoming the effect of small thermal conductivity

Inactive Publication Date: 2013-04-24
上海焦耳蜡业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cationic emulsifier has the advantage of not being afraid of hard water and acid, but because of its high price, it is rarely used alone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a phase-change energy storage material, comprising the following steps:

[0029] (1) Ratio of materials, the unit is percentage by weight:

[0030] Inorganic salt 3%, emulsifier 20%, co-emulsifier 2%, paraffin 74%, water 1%.

[0031] (2) According to the above weight percentage, take 3% inorganic salt sodium sulfate and add it to 1% tap water, heat to 90°C to obtain an aqueous solution of inorganic salt mixture.

[0032] (3) Mix 20% emulsifier OP10 with 2% co-emulsifier triethanolamine and heat to 120°C.

[0033] (4) Add 74% of No. 25 phase-change paraffin wax produced by Shanghai Joule Wax Industry Co., Ltd. to the mixture of emulsifier and co-emulsifier in step (3), mix well, and then heat to 120°C.

[0034] (5) Slowly add the heated inorganic salt mixture aqueous solution in step (2) to the paraffin phase change material obtained in step (4) at a temperature of 120° C., and stir evenly.

[0035] (6) Cool the emulsion in step (5) to obtain t...

Embodiment 2

[0038] A preparation method of a phase-change energy storage material, comprising the following steps:

[0039] (1) Ratio of materials, the unit is percentage by weight:

[0040] Inorganic salt 50%, emulsifier 2%, co-emulsifier 2%, paraffin 11%, deionized water 35%.

[0041] (2) According to the above weight percentage, take 50% of the inorganic salt sodium acetate and add it to 35% deionized water, and heat it to 98°C to obtain an aqueous solution of the inorganic salt mixture.

[0042] (3) Mix 2% emulsifier MOA9 with 2% co-emulsifier oleic acid and heat to 90°C.

[0043] (4) Add 11% of No. 35 phase-change paraffin wax produced by Shanghai Joule Wax Industry Co., Ltd. to the mixture of emulsifier and co-emulsifier in step (3), mix well, and then heat to 90°C.

[0044] (5) Slowly add the heated inorganic salt mixture aqueous solution in step (2) to the paraffin phase change material obtained in step (4) at a temperature of 90° C., and stir evenly.

[0045] (6) Cool the emul...

Embodiment 3

[0048] A preparation method of a phase-change energy storage material, comprising the following steps:

[0049] (1) Ratio of materials, the unit is percentage by weight:

[0050] Inorganic salt 80%, emulsifier 1%, co-emulsifier 2%, paraffin 3%, tap water 14%.

[0051] (2) Add 40% of the inorganic salt sodium sulfate and 40% of the inorganic salt calcium chloride to 14% tap water according to the above weight percentage, and heat to 100°C to obtain an aqueous solution of the inorganic salt mixture.

[0052] (3) Mix 1% emulsifier TX10 with 2% co-emulsifier stearic acid and heat to 120°C.

[0053] (4) Add 3% of No. 30 phase-change paraffin wax produced by Shanghai Joule Wax Industry Co., Ltd. to the mixture of emulsifier and co-emulsifier in step (3), mix well, and then heat to 120°C.

[0054] (5) Slowly add the heated inorganic salt mixture aqueous solution in step (2) to the material obtained in step (4) at a temperature of 120°C, and stir evenly.

[0055] (6) Cool the emulsio...

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Abstract

The invention relates to a preparation method for a phase change energy storage material in the field chemistry and chemical engineering. The method comprises the following steps: (1) the phase change energy storage material comprises the following materials in percentage by weight: 3-80% of inorganic salt, 2-30% of emulsifying agent, 2-5% of auxiliary emulsifying agent, 3-80% of paraffins and 1-35% of water; (2) adding the inorganic salt in the water, and heating the water to obtain an inorganic salt mixture water solution; (3) mixing and heating the emulsifying agent and the auxiliary emulsifying agent; (4) adding the paraffins to the mixture of the emulsifying agent and the auxiliary emulsifying agent, and heating the mixture; (5) adding the inorganic salt mixture water solution to the paraffins phase change material in the step (4), and uniformly stirring; and (6) cooling the emulsifying liquid in the step (5) so as to obtain the target product. According to the preparation method, the inorganic phase material is compounded with the paraffins by the emulsifying way so as to obtain cross phase change material, and therefore the defects that the inorganic phase change energy storage material is excessively cold and is separated, and the organic phase change material have smaller heat conductivity coefficient, can be solved. The preparation method is applicable to the fields such as the house constant temperature field, the solar water heater field, the heat accumulation and electronic constant temperature field, etc.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a preparation method of a phase-change energy storage material. technical background [0002] Phase-change energy storage materials have been studied in foreign advanced countries as early as the 1960s, but in my country, the research on phase-change energy storage materials was not started until the 1980s. There are many kinds of phase change energy storage materials, which can be divided into solid-solid, solid-liquid, liquid-gas, and solid-gas phase change energy storage materials according to their phase change modes; according to their chemical composition, they can be divided into: inorganic, organic, Composite phase change energy storage materials. [0003] The inorganic phase change energy storage materials mainly include molten salts, crystalline hydrated salts, metals and their alloys, fluorides, activated clay and mineral wool. Among them, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
Inventor 张建雨
Owner 上海焦耳蜡业有限公司
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