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Acoustic-thermal energy conversion type composite phase change energy storage material as well as preparation method and application thereof

A composite phase change and energy conversion technology, applied in heat exchange materials, chemical instruments and methods, and other chemical processes, can solve problems such as liquid leakage of phase change materials, achieve improved thermal conductivity, simple synthesis process, and energy storage high efficiency effect

Active Publication Date: 2021-04-30
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, constructing a three-dimensional graphene oxide support network by sol-gel method, coating organic solid-liquid phase change components in situ, and designing and preparing phase change energy storage materials with graphene network structure can solve the problem of liquid leakage of phase change materials. At the same time endow the material with sound-to-heat conversion capability

Method used

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  • Acoustic-thermal energy conversion type composite phase change energy storage material as well as preparation method and application thereof
  • Acoustic-thermal energy conversion type composite phase change energy storage material as well as preparation method and application thereof
  • Acoustic-thermal energy conversion type composite phase change energy storage material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0047] 1. Add 5.0g PEG-6000 and 5.0ml graphene oxide nanosheet dispersion liquid with a concentration of 5.0mg / ml into a 20ml beaker, stir magnetically at 2000r / min for 2h to mix evenly, and obtain PEG-6000 phase change material Mixed system with graphene oxide nanosheet dispersion.

[0048] 2. Under the condition of 2000r / min magnetic stirring, dropwise add a volume of 1ml Fe in the mixed system obtained through step (1). 2+ with Fe 3+ FeCl with a total concentration of 0.5mol / L 2 and FeCl 3 (the molar ratio is 1:2) mixed solution crosslinking agent, metal ions and the carboxyl groups of graphene oxide nanosheets undergo a coordination crosslinking reaction to form a gel, and obtain a graphene oxide composite phase change gel system;

[0049] 3. Add 150 ul of NH with a mass fraction of 40% dropwise to the graphene oxide composite phase change gel system 3 h 2 O, making some metal ions alkalized into Fe with a particle size of 50-100nm 3 o 4 Nanoparticles and Fe with a ...

Embodiment 2

[0058] 1. Add 5.0g PEG-4000, 5.0ml graphene oxide nanosheet dispersion liquid with a concentration of 5.0mg / ml into a 20ml beaker, stir magnetically for 2 hours at a speed of 2000r / min to mix evenly, and obtain PEG-4000 phase change material and Mixed system of graphene oxide nanosheet dispersion.

[0059] 2. Under the condition of 2000r / min magnetic stirring, dropwise add a volume of 1ml Fe in the mixed system obtained through step (1). 2+ with Fe 3+ FeCl with a total concentration of 0.5mol / L 2 and FeCl 3 (the molar ratio is 1:2) mixed solution crosslinking agent, metal ions and the carboxyl groups of graphene oxide nanosheets undergo a coordination crosslinking reaction to form a gel, and obtain a graphene oxide composite phase change gel system;

[0060] 3. Add 150 ul of NH with a mass fraction of 40% dropwise to the graphene oxide composite phase change gel system 3 h 2 O, making some metal ions alkalized into Fe with a particle size of 50-100nm 3 o 4 Nanoparticles...

Embodiment 3

[0062] 1. Add 5.0g PEG-8000 and 5.0ml graphene oxide nanosheet dispersion liquid with a concentration of 5.0mg / ml to a 20ml beaker, stir magnetically at 2000r / min for 2h to mix evenly, and obtain PEG-8000 phase change material and Mixed system of graphene oxide nanosheet dispersion.

[0063] 2. Under the condition of 2000r / min magnetic stirring, dropwise add a volume of 1ml Fe in the mixed system obtained through step (1). 2+ with Fe 3+ FeCl with a total concentration of 0.5mol / L 2 and FeCl 3 (the molar ratio is 1:2) mixed solution cross-linking agent, the metal ion and the carboxyl group of graphene oxide undergo a coordination cross-linking reaction to form a gel, and obtain a graphene oxide composite phase change gel system;

[0064] 3. Add 150 ul of NH with a mass fraction of 40% dropwise to the graphene oxide composite phase change gel system 3 h 2 O, making some metal ions alkalized into Fe with a particle size of 50-100nm 3 o 4 Nanoparticles and Fe with a particl...

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Abstract

The invention relates to an acoustic-thermal energy conversion type composite phase change energy storage material as well as a preparation method and application thereof, and belongs to the field of composite materials. The acoustic-thermal energy conversion type composite phase change energy storage material consists of three-dimensional network frameworks and an organic solid-liquid phase change material filled between the three-dimensional network frameworks, wherein each three-dimensional network framework is of a three-dimensional network structure formed by mutually connecting and constructing graphene oxide nanosheets of which the surfaces are loaded with metal oxide nanoparticles. According to the invention, a three-dimensional network in-situ loaded phase change material is constructed through coordination and complexation of metal ions and carboxyl functional groups on the surfaces of graphene oxide nanosheets by adopting a one-pot method, and then partial metal ions are alkalized and reduced to generate metal oxide nanoparticles, so that construction of the acoustic-thermal converter and compounding of the acoustic-thermal converter and the phase change material are realized. The method has the advantages of simple synthesis process and low energy consumption, and can effectively reduce the production cost.

Description

technical field [0001] The invention relates to an acoustic-thermal energy conversion composite phase-change energy storage material, a preparation method and application thereof, and belongs to the field of composite materials. Background technique [0002] With the development of modern industry, environmental pollution has emerged. Noise pollution is a kind of environmental pollution, which has become a great harm to human beings. It propagates in the form of sound waves in the medium. When it propagates in the solid medium, due to the viscosity of the medium, it causes internal friction between the particles, so that part of the sound energy is converted into heat energy; at the same time, due to the heat conduction of the medium, Heat is exchanged between dense and sparse parts of the medium, resulting in attenuation of sound waves and generation of heat energy. So far, there is little research and development on acoustic-thermal energy conversion materials. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C09K3/00
CPCC09K5/063C09K3/00
Inventor 唐炳涛刘璐张宇昂张淑芬
Owner DALIAN UNIV OF TECH