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A kind of preparation method of solid-solid phase change energy storage material

A phase change energy storage material and reactor technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problem of high phase change enthalpy and achieve the effect of ensuring hydrophilicity

Active Publication Date: 2022-08-09
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 solid-solid phase change energy storage materials, 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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  • A kind of preparation method of solid-solid phase change energy storage material

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Effect test

Embodiment 1

[0032] A preparation method of a solid-solid phase change energy storage material, which is specifically implemented according to the following steps:

[0033] In step 1, an appropriate amount of polyether polyol is added to the reactor, and vacuum dehydration is carried out at 110 °C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, and polyethylene glycol and The compound 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, the temperature of the reactor is lowered to 50°C, an appropriate amount of diisocyanate is added, and the reaction is maintained for 1 hour, and then the temperature is raised to 80°C, and the reaction is maintained for 3 hours to obtain a polyurethane prepolymer;

[0035] Among them, the diisocyanate is isophorone diisocyanate; the molar ratio of ...

Embodiment 2

[0040] A preparation method of a solid-solid phase change energy storage material, which is specifically implemented according to the following steps:

[0041] In step 1, an appropriate amount of polyether polyol is added to the reactor, and vacuum dehydration is carried out at 110 °C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, and polyethylene glycol and The compound 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] In step 2, the temperature of the reactor is lowered to 50° C., an appropriate amount of diisocyanate is added, and the reaction is kept for 1 hour, and then the temperature is raised to 80° C., and the reaction is kept for 2 hours to obtain a polyurethane prepolymer;

[0043] Wherein, the diisocyanate is isophorone diisocyanate; the molar ratio of diisocya...

Embodiment 3

[0048] A preparation method of a solid-solid phase change energy storage material, which is specifically implemented according to the following steps:

[0049] In step 1, an appropriate amount of polyether polyol is added to the reactor, and vacuum dehydration is carried out at 110 °C for 2 hours; wherein, the polyether polyol is a compound of polyethylene glycol and polytetrahydrofuran ether glycol, and polyethylene glycol and The compound 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] In step 2, the temperature of the reactor is lowered to 50° C., an appropriate amount of diisocyanate is added, and the reaction is kept for 1 hour, and then the temperature is raised to 80° C., and the reaction is kept for 2.5 hours to obtain a polyurethane prepolymer;

[0051] Wherein, the diisocyanate is isophorone diisocyanate; the molar ratio of diisoc...

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Abstract

The invention discloses a method for preparing a novel solid-solid phase change energy storage material. An appropriate amount of polyether polyol is added into a reactor for high-temperature vacuum dehydration treatment; the temperature of the reactor is lowered to 50° C., an appropriate amount of diol is added Isocyanate, heat preservation reaction for 1 h, then heat up to 80 °C, heat preservation reaction for 2 to 3 hours to obtain polyurethane prepolymer; add an appropriate amount of small molecular chain extender to the reactor for chain extension, and heat the reaction at 80 °C for 2 hours; The temperature is lowered to room temperature, water is added to emulsify uniformly, and a novel solid-solid phase change energy storage material is obtained. The present invention is a preparation method of a novel solid-solid phase change energy storage material, which solves the problem of high phase change enthalpy of the polyurethane solid-solid phase change energy storage material existing in the prior art.

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 solid-solid phase change energy storage material. Background technique [0002] The clothing made of phase change energy storage material can keep the human body in a comfortable temperature environment through the unique thermal insulation performance of the phase change material when absorbing and releasing heat. When the temperature increases, the phase change material undergoes a crystallization-melting phase transition, absorbing heat; when the temperature decreases, the phase change material undergoes a melting-crystallizing phase transition, releasing heat, and adjusting the temperature through energy absorption and release. [0003] At present, microencapsulated phase change materials are mostly used in the field of temperature-regulating textiles. Phase change material microcapsules have many advanta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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