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Method for preparing high-thermal-conductivity organic phase change energy storage material

A technology of energy storage materials and high thermal conductivity, which is applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of inability to form a thermal conduction network, serious agglomeration phenomenon, and small electrical conductivity, and achieve simple preparation steps and thermal conductivity. Good, dense effect

Inactive Publication Date: 2016-11-09
陈建峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: In view of the stable performance of the common organic phase change materials at present, but there are problems such as small electrical conductivity, low thermal conductivity, and liquid leakage during phase change, carbon nanotubes are used to load organic phase change materials. It can improve its thermal conductivity, but the combination of the two cannot form an effective heat conduction network and the defect of agglomeration is serious. It provides a kind of extraction of erythritol from the waste erythritol production mother liquor as an organic phase change material. A method for compounding carbon nanotubes with fluorine-rich cod and fluorine-containing surfactants, and finally loading erythritol to obtain organic phase-change energy storage materials with high thermal conductivity

Method used

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Examples

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Effect test

example 1

[0020] First, take the discarded erythritol production mother liquor, pass it into a ceramic tank, let it sit for 5 days, remove the precipitated impurities in the lower layer, put the removed mother liquor into a vacuum concentration tank, and concentrate it to the original volume at 1000Pa 1 / 3 of the mother liquor concentrate; then add 2% of its quality erythritol as a seed crystal to the above mother liquor concentrate, stir with a mixer, and add the total volume of the concentrate drop by drop in the process of stirring 5 The % mass concentration is 80% methanol solution. After the dropwise addition, move it into an ice-water bath at 6°C, let it stand for crystallization overnight, and finally use a centrifuge to separate it at a speed of 5000r / min to obtain a precipitate. After natural air drying, erythritol crystals are obtained. Then take 2 cod, manually deboned, cut the fish meat into pieces, put into an iron pot, add deionized water 5 times the total volume of the fish...

example 2

[0023]Firstly, take the discarded erythritol production mother liquor, put it into a ceramic tank, let it settle for 3 days, remove the precipitated impurities in the lower layer, put the removed mother liquor into a vacuum concentration tank, and concentrate it to the original volume at 900Pa 1 / 3 of the mother liquor concentrate; then add 1% of its quality erythritol as a seed crystal to the above mother liquor concentrate, stir with a mixer, and add the total volume of the concentrate drop by drop in the process of stirring 3 The % mass concentration is 80% methanol solution. After the dropwise addition, move it into an ice-water bath at 4°C, let it stand for crystallization overnight, and finally use a centrifuge to separate the precipitate at a speed of 4000r / min. After natural air drying, erythritol crystals are obtained. Then take 1 cod, cut the fish meat into pieces after manual deboning, add deionized water 3 times the total volume of the fish pieces into an iron pot, h...

example 3

[0026] First, take the discarded erythritol production mother liquor, put it into a ceramic tank, let it settle for 4 days, remove the precipitated impurities in the lower layer, put the removed mother liquor into a vacuum concentration tank, and concentrate it to the original volume at 950Pa 1 / 3 of the mother liquor concentrate; then add 1% of its quality erythritol as a seed crystal to the above mother liquor concentrate, stir with a mixer, and add the total volume of the concentrate drop by drop in the process of stirring 4 The % mass concentration is 80% methanol solution. After the dropwise addition, move it into an ice-water bath at 5°C, let it stand for crystallization overnight, and finally use a centrifuge to separate it at a speed of 4500r / min to obtain a precipitate. After natural air drying, erythritol crystals are obtained. Then take 2 cod, cut the fish meat into pieces after manual deboning, add deionized water with 4 times the total volume of the fish pieces in a...

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Abstract

The invention relates to a method for preparing a high-thermal-conductivity organic phase change energy storage material and belongs to the technical field of material preparation. The method comprises the following steps: extracting erythritol from a waste erythritol production mother liquor as an organic phase change material, conducting compound modification on carbon nanotubes by using fluorine-rich cod and a fluorine-containing surfactant, and finally loading erythritol so as to obtain the high-thermal-conductivity organic phase change energy storage material. The thermal conductivity of the prepared high-thermal-conductivity organic phase change energy storage material can reach 8.99 to 9.34 W / m.k, and is good; the high-thermal-conductivity organic phase change energy storage material is high in stability and large in density, and can be widely applied to the fields of building insulation materials and the like; in addition, the waste erythritol production mother liquor is fully used, so that the resource is recycled, the cost is lowered, and the preparation steps are simple.

Description

technical field [0001] The invention relates to a method for preparing an organic phase-change energy storage material with high thermal conductivity, and belongs to the technical field of material preparation. Background technique [0002] As an emerging functional material, phase change energy storage material (PCM) works on the principle of absorbing (or releasing) the latent heat of phase change by using the phase change process of the material to realize the absorption (or release) of energy in the environment. In turn, it can store heat or cool down, so as to achieve the goal of energy storage. A suitable phase change material not only requires the material to have high melting enthalpy, high thermal conductivity and suitable phase change temperature, but also requires the material to meet certain conditions in terms of physical properties, chemical properties and even economic costs: (1) Physical Performance: low undercooling, small density change during phase transi...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 陈建峰薛培龙林茂平
Owner 陈建峰
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