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Preparation method of novel solid-solid phase change energy storage material

A phase change energy storage material, a new technology, applied in the field of phase change energy storage material preparation, can solve the problem of high phase change enthalpy, and achieve the effect of meeting the application requirements

Active Publication Date: 2021-03-19
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of a novel solid-solid phase change energy storage material, which solves the problem of high phase change enthalpy of polyurethane solid-solid phase change energy storage materials in the prior art

Method used

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  • Preparation method of novel solid-solid phase change energy storage material

Examples

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Effect test

Embodiment 1

[0032] A method for preparing a novel solid-solid phase change energy storage material, specifically implemented according to the following steps:

[0033] Step 1, add an appropriate amount of polyether polyol into the reactor, and dehydrate under vacuum at 110°C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, polyethylene glycol and The compounding mass ratio of polytetrahydrofuran ether glycol is 9:1; the molecular weight of polyethylene glycol is 2000, and the molecular weight of polytetrahydrofuran ether glycol is 2000;

[0034] Step 2, lower the temperature of the reactor to 50°C, add an appropriate amount of diisocyanate, keep it warm for 1 hour, then raise the temperature to 80°C, keep it warm for 3 hours, and obtain a polyurethane prepolymer;

[0035] Among them, the diisocyanate is isophorone diisocyanate; the molar ratio of diisocyanate to polyether polyol is 1.3:1;

[0036] Step 3, add an appropr...

Embodiment 2

[0040] A method for preparing a novel solid-solid phase change energy storage material, specifically implemented according to the following steps:

[0041] Step 1, add an appropriate amount of polyether polyol into the reactor, and dehydrate under vacuum at 110°C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, polyethylene glycol and The compounding mass ratio of polytetrahydrofuran ether glycol is 1:1; the molecular weight of polyethylene glycol is 2000, and the molecular weight of polytetrahydrofuran ether glycol is 2000;

[0042] Step 2, lower the temperature of the reactor to 50°C, add an appropriate amount of diisocyanate, keep it warm for 1 hour, then raise the temperature to 80°C, keep it warm for 2 hours, and obtain a polyurethane prepolymer;

[0043] Among them, the diisocyanate is isophorone diisocyanate; the molar ratio of diisocyanate to polyether polyol is 2:1;

[0044] Step 3, add an appropria...

Embodiment 3

[0048] A method for preparing a novel solid-solid phase change energy storage material, specifically implemented according to the following steps:

[0049] Step 1, add an appropriate amount of polyether polyol into the reactor, and dehydrate under vacuum at 110°C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, polyethylene glycol and The compounding mass ratio of polytetrahydrofuran ether glycol is 6:1; the molecular weight of polyethylene glycol is 2000, and the molecular weight of polytetrahydrofuran ether glycol is 2000;

[0050] Step 2, lower the temperature of the reactor to 50°C, add an appropriate amount of diisocyanate, keep the temperature for 1 hour, then raise the temperature to 80°C, keep the temperature for 2.5 hours, and obtain the polyurethane prepolymer;

[0051] Among them, the diisocyanate is isophorone diisocyanate; the molar ratio of diisocyanate to polyether polyol is 2:1;

[0052] Step...

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Abstract

The invention discloses a preparation method of a novel solid-solid phase change energy storage material, which comprises the following steps: adding a proper amount of polyether polyol into a reactor, and carrying out high-temperature vacuumizing dehydration treatment; cooling the temperature of the reactor to 50 DEG C, adding a proper amount of diisocyanate, carrying out a thermal insulation reaction for 1 h, conducting heating to 80 DEG C, and carrying out a thermal insulation reaction for 2-3 h to obtain a polyurethane prepolymer; adding a proper amount of micromolecular chain extender into the reactor for chain extension, and carrying out heat preservation reaction at 80 DEG C for 2 hours; and cooling the reactor to room temperature, adding water, and conducting uniform emulsifying toobtain the novel solid-solid phase change energy storage material. According to the preparation method of the novel solid-solid phase change energy storage material, the problem of high phase changeenthalpy of a polyurethane solid-solid phase change energy storage material in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of preparation of phase change energy storage materials, in particular to a preparation method of a novel solid-solid phase change energy storage material. Background technique [0002] Clothing made of phase-change energy storage materials can keep the human body in a comfortable temperature environment through the unique thermal insulation properties of phase-change materials when absorbing and releasing heat. When the temperature rises, the phase change material undergoes a crystallization-melting phase transition and absorbs heat; when the temperature decreases, the phase change material undergoes a melting-crystallization phase transition, releasing heat, and the temperature is adjusted through the absorption and release of energy. [0003] At present, microencapsulated phase change materials are widely used in the field of temperature-adjusting textiles. Phase change material microcapsules have many a...

Claims

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Application Information

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IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/32C09K5/02
CPCC08G18/12C08G18/6677C08G18/4833C08G18/4854C08G18/4808C08G18/3206C09K5/02Y02E60/14
Inventor 陆少锋师文钊徐成书谢艳王海珠展雄威
Owner XI'AN POLYTECHNIC UNIVERSITY
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