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Composite heat storage material and preparation method thereof

A composite heat storage material and technology of heat storage materials, applied in the field of composite heat storage materials and their preparation, can solve the problems of complex preparation process of composite heat storage materials, shorten the preparation cycle, improve low thermal conductivity, and reduce production costs Effect

Active Publication Date: 2015-09-16
SUZHOU YUNSHU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved is: in order to solve the complex problem of the preparation process of the composite heat storage material, improve a composite heat storage material and its preparation method, the composite heat storage material has good application performance, and the preparation process is simple and suitable for Practical applications of composite energy storage materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing a composite heat storage material, comprising the following steps:

[0019] 1) Mix carbon nanotubes, nickel foam, organic sepiolite, alumina and strontium oxide at a mass ratio of 2:2:1:0.1:0.2, add an appropriate amount of water, and place in a microwave reactor at a reaction temperature of 110~℃, the reaction time is 15min;

[0020] 2) Step 1) After the reaction is completed, perform suction filtration, wash, and dry at 60°C for 8 hours;

[0021] 3) Add the dried powder in step 2) into the molten polyethylene glycol heat storage material, keep the mass fraction of the heat storage material in the mixture at 20wt%, stir at 70°C for 3 hours, and obtain a composite heat storage material after cooling Material.

[0022] The thermal conductivity of the obtained composite heat storage material is 63W / (m·k), and the latent heat of phase change is 97.5J / g.

Embodiment 2

[0024] A method for preparing a composite heat storage material, comprising the following steps:

[0025] 1) Mix carbon nanotubes, nickel foam, organic sepiolite, alumina and strontium oxide at a mass ratio of 3:4:4:1:1.5, add an appropriate amount of water, and place in a microwave reactor at a reaction temperature of 180°C, the reaction time is 30min;

[0026] 2) Step 1) After the reaction is completed, perform suction filtration, wash, and dry at 60°C for 8 hours;

[0027] 3) Add the dried powder in step 2) into the molten trimethylolethane heat storage material, keep the mass fraction of the heat storage material in the mixture at 40wt%, stir at 70°C for 3 hours, and obtain a compound after cooling Heat storage material.

[0028] The thermal conductivity of the obtained composite heat storage material is 71W / (m·k), and the latent heat of phase change is 86.9J / g.

Embodiment 3

[0030] A method for preparing a composite heat storage material, comprising the following steps:

[0031] 1) Mix carbon nanotubes, nickel foam, organic sepiolite, alumina and strontium oxide at a mass ratio of 3:2:4:0.5:0.5, add an appropriate amount of water, and place in a microwave reactor at a reaction temperature of 150℃, the reaction time is 20min;

[0032] 2) Step 1) After the reaction is completed, perform suction filtration, wash, and dry at 60°C for 8 hours;

[0033] 3) Add the dried powder in step 2) into the molten neopentyl glycol heat storage material, keep the mass fraction of the heat storage material in the mixture at 30wt%, stir at 70°C for 3 hours, and obtain a composite heat storage material after cooling Material.

[0034] The thermal conductivity of the obtained composite heat storage material is 68W / (m·k), and the latent heat of phase change is 93.7J / g.

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Abstract

The invention discloses a composite heat storage material and a preparation method thereof. The composite heat storage material comprises a carbon nano tube, foamed nickel, organic sepiolite, alumina, strontia and a heat storage material. The composite heat storage material is an organic composite material. According to the preparation method, a microwave heating method is combined with a stirring mixing method and is an efficient preparation method, so that the preparation period can be shortened, and the production efficiency can be improved; furthermore, the preparation method is simple and applicable to actual application.

Description

technical field [0001] The invention relates to the field of materials, in particular to a composite heat storage material and a preparation method thereof. Background technique [0002] Heat storage technology is to balance the uncoordinated relationship between energy supply and energy consumption in many energy utilization systems, and to avoid unreasonable energy utilization and a large amount of energy waste. Heat storage technology in a broad sense includes heat storage technology and cold storage technology, among which heat storage technology includes sensible heat storage and phase change heat storage. Sensible heat storage is to use the specific heat capacity of the material itself to store / release heat energy, while phase change heat storage is to store / release heat energy by using the absorption / exothermic energy conversion method when the phase change material PCM (phase change materials) undergoes a phase change . [0003] Phase-change heat storage materials...

Claims

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Application Information

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IPC IPC(8): C09K5/14
CPCC09K5/10C09K5/14
Inventor 戴晓宸
Owner SUZHOU YUNSHU NEW MATERIAL TECH
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