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Dendritic organic nano composite phase change thermal storage material and preparation method thereof

A phase change heat storage material and nanocomposite technology, which is applied in the field of organic nanocomposite phase change heat storage materials and their preparation, can solve the problems of poor compatibility of polymer matrix and achieve good compatibility, high heat exchange efficiency, The effect of high energy storage density

Inactive Publication Date: 2012-10-10
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the nanophase-change energy-storage capsule powder reported by Zhang Dong et al. (CN200810202404, a preparation method and application of phase-change energy-storage nanocapsule powder) of Tongji University has high energy storage efficiency, but it is not compatible with polymer The compatibility of the matrix is ​​poor and needs further improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 1 mol of ethylenediamine and 2 mol of methanol into a three-neck flask equipped with a magnetic stirrer, reflux condenser and thermometer, and stir for 40 minutes at 30°C to completely dissolve the ethylenediamine.

[0031] Add 6mol methyl acrylate and 0.2mol Na 2 SO 4 10H 2 O, after reacting at 80°C for 24h, transfer the reaction mixture into a separatory funnel, let it stand for 1h, separate the lower layer liquid, and wash the lower layer liquid with methanol. Residual methanol was removed by vacuum distillation at 80°C and a pressure of 150 Pa.

[0032] Dissolve the distilled product in 100 mL of acetone, place it in a refrigerator at 0°C for 20 hours to crystallize, filter under negative pressure, and dry to obtain white crystals, which are 0.5-generation dendritic organic nanocomposite phase-change heat storage materials.

[0033] Add 1 mol of 0.5 generation phase change heat storage material to a three-neck flask equipped with a magnetic stirrer, reflux co...

Embodiment 2

[0041] Add 1 mol of ethylenediamine and 3 mol of methanol into a three-neck flask equipped with a magnetic stirrer, a reflux condenser and a thermometer, and stir for 30 minutes at 40°C to completely dissolve 7-diamine.

[0042] Add 7mol methyl acrylate and 0.3mol pentaerythritol, react at 70°C for 30h, transfer the reaction mixture into a separatory funnel, let it stand for 2h, separate the lower layer liquid, and wash the lower layer liquid with methanol. Residual methanol was removed by vacuum distillation at 85°C and a pressure of 120 Pa.

[0043] Dissolve the distilled product in 120 mL of acetone, place it in a refrigerator at 5°C for 15 hours to crystallize, filter under negative pressure, and dry to obtain white crystals, which are 0.5-generation dendritic organic nanocomposite phase-change heat storage materials.

[0044] Add 1 mol of the 0.5-generation phase-change heat storage material into a three-neck flask equipped with a magnetic stirrer, a reflux condenser and ...

Embodiment 3

[0052] Add 1 mol of ethylenediamine and 4 mol of methanol into a three-neck flask equipped with a magnetic stirrer, a reflux condenser and a thermometer, and stir for 20 minutes at 50°C to completely dissolve the ethylenediamine.

[0053] Add 8mol methyl acrylate and 0.4mol paraffin, react at 60°C for 36h, transfer the reaction mixture into a separatory funnel, let it stand for 3h, separate the lower layer liquid, and wash the lower layer liquid with methanol. Residual methanol was removed by vacuum distillation at 90° C. and a pressure of 100 Pa.

[0054] Dissolve the distilled product in 150mL of acetone, place it in a refrigerator at 10°C for crystallization for 10 hours, filter under negative pressure, and dry to obtain white crystals, which are 0.5-generation dendritic organic nanocomposite phase-change heat storage materials.

[0055] Add 1 mol of the 0.5-generation phase-change heat storage material into a three-neck flask equipped with a magnetic stirrer, a reflux cond...

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Abstract

The invention provides a dendritic organic nano composite phase change thermal storage material and a preparation method thereof. The preparation method comprises the following steps of: (1) adding mixed solution of ethylenediamine and methanol into methyl acrylate and a phase change material, reacting, standing, collecting lower-layer liquid, crystallizing, and collecting crystals; (2) adding a product in the step (1) into ethylenediamine and the phase change material, reacting, standing, collecting lower-layer liquid, crystallizing, and collecting crystals; (3) adding a product in the step (2) into the methyl acrylate and the phase change material, reacting, standing, collecting lower-layer liquid, crystallizing, and collecting crystals; and (4) adding a product in the step (3) into theethylenediamine and the phase change material, reacting, standing, collecting lower-layer liquid, crystallizing, and collecting crystals to obtain the dendritic organic nano composite phase change thermal storage material. The dendritic organic nano composite phase change thermal storage material has high energy storage density, constant temperature control, and obvious energy-saving effect, is well compatible with a polymer matrix, and has important significance for multiple fields such as aerospace and the like.

Description

technical field [0001] The invention relates to an organic nanocomposite phase change heat storage material and a preparation method thereof. Background technique [0002] With the increasingly prominent energy and environmental issues, energy conservation and emission reduction has attracted the attention of the international community. Effective use of energy and energy storage are important means to achieve energy conservation and emission reduction. [0003] Phase change energy storage technology uses the latent heat of phase change of materials to realize energy absorption, storage and release, and has become one of the research hotspots in the field of effective energy utilization and energy saving. Since the 1960s, researchers from various countries have conducted in-depth research on the theory and application of solid-liquid phase change energy storage. Phase change energy storage materials refer to materials that can exchange energy with the external environment (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/00C09K5/06
Inventor 王锦成陈思浩郭燕徐楠徐善中
Owner SHANGHAI UNIV OF ENG SCI
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