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Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method

A technology of composite phase change and phase change energy storage materials, which is applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., to achieve the effect of simple preparation method, stable performance and good dispersibility

Inactive Publication Date: 2016-08-17
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a graphene oxide dispersed composite phase-change energy storage microcapsule, which is formed by repeated wrapping with the adsorption carrier diatomite as the core. The phase change material is the traction body, and the graphene oxide is the outer protective film. In this way, repeated microcapsule production forms a cyclic system, which solves the problem of leakage of the phase change material itself, and the product has excellent dispersibility. an effective way

Method used

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  • Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method
  • Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method
  • Graphene oxide disperse composite phase-change energy storage microcapsules and preparation method

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Embodiment 1

[0034] 4. (1) Weigh 20g of modified diatomite, add 125ml of absolute ethanol as a dispersant, and disperse on the mixer for 20-30 minutes; then weigh 12-15g of binary phase change material, and add Use 125ml of absolute ethanol as a dispersant, disperse on a stirrer for 40-60 minutes; (2) Weigh 0.5g of graphene and use 250ml of deionized water to supercharge for 2h under ultrasonic waves, and then use a centrifuge to obtain bright yellow The solution is a graphene solution; (3) Finally, the diatomite dispersion, the phase change material dispersion and the graphene solution are mixed to form a mixed solvent of absolute ethanol and deionized water at a ratio of 1:1, and at 70 Evaporate and stir in constant temperature water at ℃, after the deionized water and absolute ethanol are evaporated, dry at room temperature, and grind to prepare graphene-dispersed composite phase-change energy storage microcapsules.

[0035] The mass percentage of graphene oxide is 1.5%, and the adsorpt...

Embodiment 2

[0040] 4. (1) Weigh 20g of modified diatomite, add 125ml of absolute ethanol as a dispersant, and disperse on the mixer for 20-30 minutes; then weigh 12-15g of binary phase change material, and add Use 125ml of absolute ethanol as a dispersant, disperse on a stirrer for 40-60 minutes; (2) Weigh 1g of graphene and use 250ml of deionized water to supercharge for 2h under ultrasonic waves, and then centrifuge in a centrifuge to obtain a bright yellow solution It is a graphene solution; (3) Finally, the diatomite dispersion, phase change material dispersion and graphene solution are mixed to form a mixed solvent of absolute ethanol and deionized water at 1:1, and heated at 70°C Evaporate and stir in a constant temperature water area, after the deionized water and absolute ethanol evaporate, dry at room temperature, and grind to prepare graphene-dispersed composite phase-change energy storage microcapsules.

[0041] The mass percentage of graphene oxide is 3%, and the adsorption ra...

Embodiment 3

[0046] 4. (1) Weigh 20g of modified diatomite, add 125ml of absolute ethanol as a dispersant, and disperse on the mixer for 20-30 minutes; then weigh 12-15g of binary phase change material, and add 125ml of absolute ethanol as a dispersant, disperse on a stirrer for 40-60 minutes; (2) Weigh 2g of graphene and use 250ml of deionized water to supercharge for 2h under ultrasonic waves, and then centrifuge in a centrifuge to obtain a bright yellow solution It is a graphene solution; (3) Finally, the diatomite dispersion, phase change material dispersion and graphene solution are mixed to form a mixed solvent of absolute ethanol and deionized water at 1:1, and heated at 70°C Evaporate and stir in a constant temperature water area, after the deionized water and absolute ethanol evaporate, dry at room temperature, and grind to prepare graphene-dispersed composite phase-change energy storage microcapsules.

[0047] The mass percentage of graphene oxide is 5.8%, and the adsorption rate...

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Abstract

The invention provides graphene oxide disperse composite phase-change energy storage microcapsules and a preparation method. By wrapping a composite phase-change energy storage material with graphene oxide, a novel circular system is formed by repeated wrapping for microcapsule preparation, wherein a carrier kieselguhr serves as a core, a phase change material serves as a tractor, and graphene oxide serves as an outer-layer protection film. The problem of leakage is solved, and the product has good dispersity, stability and no toxicity or corrosivity and avoids environmental impact caused by the leakage of the phase change material; and meanwhile, the problem of practical application obstruction caused by difficulty in dispersion is also solved. The product has dark black color and is in a powder state.

Description

[0001] Technical field: [0002] The invention discloses a graphene oxide dispersed composite phase change energy storage microcapsule, which has good dispersibility, a phase change temperature in line with the comfortable range for human living, high latent heat of phase change and effectively solves the problem of leakage of composite phase change materials. At the same time, a preparation method thereof is provided, which belongs to the technical field of phase change energy storage. Background technique: [0003] The research of phase change energy storage materials is very important for making full use of solar energy and improving the comfortable environment for human living. Although phase change energy storage materials have been extremely hotly studied by many experts and scholars in recent years, and have made unprecedented progress, it is indeed long and difficult to further study the practical application performance and better thermal properties of phase chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06B01J13/02
CPCC09K5/063B01J13/02
Inventor 肖力光胡洪亮宋双
Owner JILIN JIANZHU UNIVERSITY