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Phase change material composition, phase change material as well as preparation method and application of phase change material

A technology of phase change materials and compositions, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of low heat enthalpy, high degree of supercooling, serious phase separation, etc., and achieve the purpose of suppressing phase separation and supercooling The effect of low temperature and high enthalpy per unit mass

Pending Publication Date: 2021-12-31
FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects of low enthalpy per unit mass, serious phase separation, and large degree of subcooling in phase change materials in the prior art

Method used

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  • Phase change material composition, phase change material as well as preparation method and application of phase change material
  • Phase change material composition, phase change material as well as preparation method and application of phase change material
  • Phase change material composition, phase change material as well as preparation method and application of phase change material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0067] Preparation 1: Preparation of sustained release type nucleation agent S1

[0068] (a) at 60 ° C, 1000 donate sodium hydrogen phosphate was heated to melt 1 h, resulting in 1000 g of hydrogen hydrogen hydrogen phosphate;

[0069] (b) At 60 ° C, 10 g of graphene gel-1 was placed in a vacuum bag, and the aforementioned all molten dodecinite sodium hydrogen phosphate was extracted into a vacuum bag with vacuum pump. In the middle, after 6 h, the excess of the excess of the excess of melting dihydrate sodium hydrogen phosphate 750g (the amount ratio of the amount of the gellers of the graphene gel-1 and the sodium hydrogen phosphate) was 1:25), and the solid was obtained after cooling. Material, at 40 ° C, the solid material was pulverized by a high speed pulverizer, and the pulverization time was not more than 40s each time the average particle diameter of 5 mm was obtained, and the solid material after pulverization was obtained in the ball mill. Mid-ball milling was 30 min to...

preparation example 2

[0070] Preparation 2: Preparation of sustained release type nucleating agent S2

[0071] (a) at 90 ° C, 1000 g of sodium pyrophosphate 10 hydrothermium was heated to melt 0.5 h, resulting in 1000 g of sodium molten pyrophosphate;

[0072] (b) At 90 ° C, 40 g of graphene gas gel-1 was placed in a vacuum bag, and in a vacuum degree of 80Pa, the aforementioned total melt-phosphate was extracted into a vacuum bag with a vacuum pump, after 6 h After the excess melt pyrophosphate is 200g (the amount ratio of graphene gas gel-1 and sodium molten pyrophosphate is 1:20), and the solid material is obtained after cooling, and the solid material is high-speed. The pulverizer is pulverized multiple times to give a sustained release type nucleating agent S2 having an average particle diameter of 5 mm.

preparation example 3

[0073] Preparation 3: Preparation of sustained release type nucleation agent S3

[0074] (a) at 50 ° C, 2000 g of diq.

[0075] (b) At 80 ° C, 60 g of graphene gel-1 was placed in a vacuum bag, and the aforementioned all molten dodechanate sodium hydrogen phosphate was extracted into a vacuum bag with a vacuum pump. In the middle, after 6 h, an excess of the excess of melting dihydrate sodium hydrogen phosphate is 800g (the amount ratio of the dithornate of the graphene gel-1 and the dihydrodoxide), and the solid material is obtained after cooling At 40 ° C, the solid material was subjected to multiple pulverization by a high speed pulverizer to obtain a sustained release type nucleating agent S3 having an average particle diameter of 8 mm.

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Abstract

The invention relates to the technical field of phase change materials, and discloses a phase change material composition, a phase change material and a preparation method and application thereof. The composition contains more than two of the following components which are stored in a mixed manner or independently stored: 90-98 wt% of an inorganic hydrated salt, 1-8 wt% of a slow-release nucleating agent, 0.2-5 wt% of a thickening agent and 0.2-3 wt% of a corrosion inhibitor, wherein the slow-release nucleating agent contains an active component and hydrophilic aerogel wrapping the surface of the active component; in the slow-release nucleating agent, the content mass ratio of the hydrophilic aerogel to the active component is 1:(8-30). Herein, the hydrophilic aerogel is adopted to coat hydrated salt active ingredients to form the slow-release nucleating agent, the slow-release nucleating agent is applied to the phase change material, phase separation of the phase change material can be effectively inhibited, and the phase change material with high enthalpy value per unit mass and low supercooling degree is obtained.

Description

Technical field [0001] The present invention relates to the field of phase change material, and more particularly to a phase change material composition, a phase change material, and a preparation method thereof. Background technique [0002] The inorganic hydrated salt phase variable storage material is used as a new type of energy-saving energy storage material, which can solve the problem of energy time and space, and improve energy utilization. [0003] When the inorganic hydrated salt phase variable storage material is sucking at high temperatures, stores excess heat in the form of latent heat, and when the ambient temperature is lowered, the stored thermal energy is releasing to the environment, reaching the time, automatically regulates the purpose of the ambient temperature, Maintain a relatively stable environmental temperature. Its excellent temperature adjustment and energy storage characteristics have been widely used in many fields such as solar utilization, building...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 吕晟东谢云云
Owner FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD
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