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Graphene alloy composite phase change material as well as preparation method and application thereof

A technology of composite phase change materials and olefin alloys, applied in heat exchange materials, chemical instruments and methods, sustainable manufacturing/processing, etc., can solve problems such as thermal conductivity that have not been reported, and facilitate promotion and industrialized large-scale production , the overall thermal conductivity is excellent, and the process is simple

Active Publication Date: 2022-01-28
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in the prior art, more attention is paid to how to use the generally recognized basic characteristics of graphene, which has excellent thermal conductivity, to add it to phase change materials to improve the overall thermal conductivity of phase change materials, but how to improve The thermal conductivity between graphene layers has not been reported

Method used

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  • Graphene alloy composite phase change material as well as preparation method and application thereof
  • Graphene alloy composite phase change material as well as preparation method and application thereof
  • Graphene alloy composite phase change material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dissolve 6.538 parts of mixed metal powder containing zinc powder (also containing 1.308 parts of indium, bismuth, tin metal powder mixed at a mass ratio of 1:1:1) and 0.03 mol of ethyl chloride in a mixed solvent of ether and tetrahydrofuran In a dry and airtight environment, the reaction was carried out, and the solvent was removed to obtain a mixture containing diethylzinc.

[0041] Add 150 parts of graphene oxide into water and ultrasonically disperse for 30 minutes. Then add the aforementioned diethylzinc-containing mixture to the dispersion, then heat to 100°C and stir for 4 hours. After the reaction is complete, add 15 parts of vitamin C and continue stirring for 3 hours at 75°C. After the reaction is completed, use toluene Washed three times, and then dried to constant weight in a vacuum oven at 80°C to obtain a graphene mixture modified with diethylzinc.

[0042] Weigh 11 parts of the graphene mixture containing diethylzinc modification and heat and melt to fo...

Embodiment 2

[0044] Dissolve 6.538 parts of mixed metal powder of zinc powder (also containing 1.308 parts of indium, bismuth, tin metal powder mixed in a mass ratio of 1:1:1) and 0.03 mol of ethyl chloride in a mixed solvent of ether and tetrahydrofuran , react in a dry and airtight environment, remove the solvent, and obtain a mixture containing diethylzinc.

[0045] Weigh 150 parts of graphene oxide into water, and ultrasonically disperse for 30 minutes. Then add the aforementioned diethylzinc-containing mixture to the dispersion, then heat to 100°C and stir for 4 hours. After the reaction is complete, add 15 parts of vitamin C and continue stirring for 3 hours at 75°C. After the reaction is completed, use toluene Washed three times, and then dried to constant weight in a vacuum oven at 80°C to obtain a graphene mixture modified with diethylzinc.

[0046] Weigh 8 parts of the graphene mixture containing diethylzinc modification and heat and melt to form a mixed melt, while heating and ...

Embodiment 3

[0048] Dissolve 6.538 parts of zinc powder (excess zinc powder) and 0.03 mol of ethyl chloride in a mixed solvent of ether and tetrahydrofuran, react in a dry and airtight environment, remove the solvent, and obtain a mixture of diethyl zinc.

[0049] Add 150 parts of graphene oxide into water and ultrasonically disperse for 30 minutes. Then add the aforementioned diethylzinc-containing mixture to the dispersion, then heat to 100°C and stir for 4 hours. After the reaction is complete, add 15 parts of vitamin C and continue stirring for 3 hours at 75°C. After the reaction is completed, use toluene Washed three times, and then dried to constant weight in a vacuum oven at 80°C to obtain a graphene mixture modified with diethylzinc.

[0050] Weigh 11 parts of the graphene mixture containing diethylzinc modification and heat and melt to form a mixed melt, while heating and melting 89 parts of paraffin to form liquid paraffin, then add the liquid paraffin to the mixed melt and stir ...

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Abstract

The invention discloses a graphene alloy composite phase change material as well as a preparation method and application thereof, an organic metal compound is adopted to modify graphene, the internal heat conductivity coefficient between graphene layers is greatly improved, and meanwhile, liquid metal with a very high heat conductivity coefficient is used for dopping, and the graphene alloy is compounded with a phase change matrix material to obtain the novel graphene alloy composite phase change material. The anisotropic heat-conducting property of the graphene is greatly improved by the organic metal modified graphene, and the heat-conducting property of the composite phase change material is further improved.

Description

technical field [0001] The invention relates to a phase change material and a preparation method thereof, in particular to a graphene alloy composite phase change material, a preparation method and an application thereof, and belongs to the technical field of phase change heat storage materials. Background technique [0002] Phase-change heat storage materials (PCMs) are an important class of materials for storing sensible and latent heat, which contribute to the efficient utilization and conservation of energy. Latent heat storage has greater energy storage density than sensible heat storage, and the temperature difference between storing and releasing heat is smaller. It has a wide range of applications, such as construction, electronics, biomedicine, textiles, and automotive industries. One of the main problems of phase change materials at this stage is the low thermal conductivity of the material itself. To solve this problem, a common solution is to add a high thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063Y02P20/10Y02E60/14
Inventor 许福邓敏达丁燕怀杨才千
Owner XIANGTAN UNIV
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