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Preparation method of polyethylene glycol/graphene shaped phase change material

A technology of polyethylene glycol and phase change materials, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of practical application inconvenience, and achieve the effect of being suitable for popularization, simple process and good stability

Active Publication Date: 2019-03-12
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Medium and low temperature solid-liquid phase change materials include paraffin, fatty acids and crystalline hydrated salts, etc., which have liquid phases during the phase change process, which brings inconvenience to practical applications

Method used

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  • Preparation method of polyethylene glycol/graphene shaped phase change material
  • Preparation method of polyethylene glycol/graphene shaped phase change material
  • Preparation method of polyethylene glycol/graphene shaped phase change material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Take polyethylene glycol (PEG) and graphene respectively according to mass percentage; Wherein, the mass percentage of polyethylene glycol (PEG) is 97%, the mass percentage of graphene is 3%, and polyethylene glycol (PEG) PEG10000 is used;

[0048] Add the weighed polyethylene glycol (PEG) and graphene into the constant temperature electric heating mantle, and then raise the temperature of the constant temperature electric heating mantle to 65°C (preferably repeat three times), so that the polyethylene glycol (PEG) in the constant temperature electric heating mantle ) and graphene are completely melted, and polyethylene glycol / graphene melt is obtained after being cooled to room temperature;

[0049] Weigh the coupling agent KH650, and drop the weighed coupling agent KH650 into the polyethylene glycol / graphene melt, wherein the added mass of the coupling agent KH650 is 1 / 2 of the polyethylene glycol / graphene melt quality 0.03%, after being stirred evenly, the precursor...

Embodiment 2

[0053] Take polyethylene glycol (PEG) and graphene respectively according to mass percentage; Wherein, the mass percentage of polyethylene glycol (PEG) is 91%, the mass percentage of graphene is 9%, and polyethylene glycol (PEG) PEG10000 is used;

[0054] Add the weighed polyethylene glycol (PEG) and graphene together into the constant temperature electric heating mantle, then raise the temperature of the constant temperature electric heating mantle to 70°C (preferably repeat three times), so that the polyethylene glycol (PEG) in the constant temperature electric heating mantle ) and graphene are completely melted, and polyethylene glycol / graphene melt is obtained after being cooled to room temperature;

[0055] Weigh the coupling agent KH650, and drop the weighed coupling agent KH650 into the polyethylene glycol / graphene melt, wherein the added mass of the coupling agent KH650 is 1 / 2 of the polyethylene glycol / graphene melt quality 0.04%, to obtain polyethylene glycol / graphe...

Embodiment 3

[0059] Take polyethylene glycol (PEG) and graphene respectively according to mass percentage; Wherein, the mass percentage of polyethylene glycol (PEG) is 96%, the mass percentage of graphene is 4%, and polyethylene glycol (PEG) PEG10000 is used;

[0060] Add the weighed polyethylene glycol (PEG) and graphene into the constant temperature electric heating mantle, then raise the temperature of the constant temperature electric heating mantle to 75°C (preferably repeat three times), so that the polyethylene glycol (PEG) in the constant temperature electric heating mantle ) and graphene are completely melted, and polyethylene glycol / graphene melt is obtained after being cooled to room temperature;

[0061] Weigh the coupling agent KH650, and drop the weighed coupling agent KH650 into the polyethylene glycol / graphene melt, wherein the added mass of the coupling agent KH650 is 1 / 2 of the polyethylene glycol / graphene melt quality 0.05%, to obtain polyethylene glycol / graphene stereo...

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Abstract

The invention discloses a preparation method of a polyethylene glycol / graphene shaped phase-change material, comprises the following steps: mixing weighed polyethylene glycol and graphene and heating to melt, then cooling to room temperature to obtain polyethylene glycol / graphene melt water; adding a coupling agent to the polyethylene glycol / graphene melt water to obtain a precursor A of the polyethylene glycol / graphene shaped phase-change material; placing the precursor A of the polyethylene glycol / grapheneshaped phase-change material into an electrothermal blowing drying box for drying the precursor A of the polyethylene glycol / grapheneshaped phase-change material under a vacuum condition to obtain a precursor B of the polyethylene glycol / grapheneshaped phase-change material; and injecting the precursor B of the polyethylene glycol / grapheneshaped phase-change material into a casting mold to obtain the polyethylene glycol / grapheneshaped phase-change material after casting molding. The preparation method disclosed by the invention takes PEG as the phase-change material and graphene as an adsorbing material, and the prepared shaped phase-change material can solve the problem of leak of material in the process of use.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of phase change materials, and in particular relates to a preparation method of polyethylene glycol / graphene shaped phase change materials. Background technique [0002] Energy is the basis for human survival. With the development of global industry, global energy is increasingly in short supply. Among them, the depletion crisis of mineral energy and environmental pollution have attracted more and more attention. To improve energy utilization and fully develop natural energy, Vigorously developing various energy-saving new technologies is an important part of achieving sustainable social development, and the key to energy conservation lies in reducing energy consumption and strengthening natural clean energy through various energy-saving technologies, and the focus is on the utilization of solar and wind energy. Due to the strong practicality of natural energy supply and demand, the us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 陈立贵付蕾王忠贾仕奎
Owner SHAANXI SCI TECH UNIV
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