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Crystallization-controllable shaped epoxy phase change material and preparation method thereof

A phase change material and crystallization technology, applied in heat exchange materials, chemical instruments and methods, reagents, etc., can solve the problems of energy supply and demand time and place mismatch, energy release waste, etc. Simple, cheap and readily available ingredients

Pending Publication Date: 2022-02-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Shape-fixed phase-change materials can solve the mismatch between energy supply and demand time and place, and shape-setting can prevent the leakage of phase-change materials, making the volume of the material easy to control and expand its application range, but sometimes the release of energy during the cooling process will cause waste, so it is particularly important to have a crystallization-controlled shape-changing material that can be heated at the desired time to release the stored energy

Method used

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  • Crystallization-controllable shaped epoxy phase change material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Put 0.5g each of polyethyleneimine and glycerol glycidyl ether into a round bottom flask, add 10ml N,N-dimethylformamide to it, put the flask in an oil bath at 80°C and continue to stir the reaction 5h.

[0023] (2) After the reaction is complete, put 4 g of erythritol into the flask, and stir for another 0.5 h in an oil bath at 80°C until the mixture is uniform.

[0024] (3) Pour the product obtained in (2) into a petri dish preheated in an oven at 110° C. for 1 h, and then put the petri dish in an oven at 100° C. for 4.5 h until the solvent is completely dried.

[0025] (4) Put the filter paper in a petri dish and put the product obtained in (3) on the filter paper, then put the petri dish in an oven at 125°C for leakage test, replace the filter paper every 1 hour until there is no trace of liquid on the filter paper , that is, a controlled-crystallization-shaped epoxy phase-change material is obtained.

[0026] The controllable crystallized epoxy phase change m...

Embodiment 2

[0028] (1) Put polyethyleneimine 0.6 and ethylene glycol diglycidyl ether 0.4g into a round bottom flask, add 10ml of N,N-dimethylformamide to it, put the flask in an oil bath at 80°C and keep stirring Reaction 5h.

[0029] (2) After the reaction is complete, put 9 g of mannitol into the flask, and stir for another 0.5 h in an oil bath at 80°C until the mixture is uniform.

[0030] (3) Pour the product obtained in (2) into a petri dish preheated in an oven at 110° C. for 2 hours, and then put the petri dish in an oven at 110° C. for 4 hours to dry until the solvent is completely dried.

[0031] (4) Put the filter paper in a petri dish and put the product obtained in (3) on the filter paper, then place the petri dish in an oven at 195°C for a leak test, and replace the filter paper every 1 hour until there is no trace of liquid on the filter paper , that is, a controlled-crystallization-shaped epoxy phase-change material is obtained.

[0032] The controllable crystallized epo...

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Abstract

The invention discloses a crystallization-controllable shaped epoxy phase change material and a preparation method thereof. According to the method, sugar alcohol is used as a phase-change material, a polymer and an epoxy resin reactant are used as supporting carriers, and the material is synthesized through a solvent method. The crystallization-controllable shaped epoxy phase-change material synthesized by the method can prevent leakage during phase change of sugar alcohol, wherein the crystal state is controllable, and the purpose of releasing stored energy within a specific required time can be achieved; in addition, the enthalpy value of the sugar alcohol is high, and the phase-change latent heat of the material is large, so that the prepared material has great application prospect.

Description

technical field [0001] The invention relates to a shape-setting epoxy phase-change material and a preparation method thereof, in particular to a controllable crystallization shape-setting epoxy phase-change material and a preparation method thereof. Background technique [0002] At present, with the development of society, energy consumption is increasing day by day. Solving energy problems is the main task of the current society. One is the development of new energy and the other is to reduce the waste of energy to achieve the purpose of saving energy. [0003] Shape-fixed phase-change materials can solve the mismatch between energy supply and demand time and place, and shape-setting can prevent the leakage of phase-change materials, making the volume of the material easy to control and expand its application range, but sometimes the release of energy during the cooling process will cause Therefore, it is particularly important to have a crystallized and controllable shape-...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08K5/053C08G81/00C09K5/06
CPCC08K5/053C08G81/00C09K5/063C08L87/005Y02P20/141
Inventor 史全柴思瑀
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI