Synthetic method of phase change material polytetramethylene glycol amine aldehyde condensation crosslinking copolymer

A technology of polybutylene glycol amine aldehyde, phase change energy storage material, applied in heat exchange materials, chemical instruments and methods, chemical industry and other directions, can solve problems such as easy leakage, reduction of crystallization enthalpy, reduction of phase change enthalpy, etc. , to achieve the effect of low condition requirements, simple process and few reaction steps

Inactive Publication Date: 2014-07-23
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the literature that has been consulted so far, the use of chemical methods to prepare solid-solid phase change materials often has the following disadvantages: (1) The enthalpy of phase change is greatly reduced, or (2) The reaction steps are complicated and difficult to industrialize
The former method has limited amount of adsorbed polyethylene glycol and is easy to leak, less energy storage, and insignificant temperature adjustment; the latter method has a complicated production process, and the newly formed chemical bonds affect the crystallization of polyethylene glycol, reducing its Crystallization enthalpy
[0004] And because polyethylene glycol is very soluble in water, also soluble in common organic solvents such as benzene, toluene, methylene chloride, ethanol, it is difficult to adopt the usual method to its microencapsulation, making the application of polyethylene glycol Development is very limited

Method used

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  • Synthetic method of phase change material polytetramethylene glycol amine aldehyde condensation crosslinking copolymer
  • Synthetic method of phase change material polytetramethylene glycol amine aldehyde condensation crosslinking copolymer

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The quality of each raw material component that prepares polytetramethylene glycol 4000-acetaldehyde-syrylenetriamine cross-linked copolymer is as follows:

[0022] Polytetramethylene glycol 4000 40g

[0023] Triamine 5g

[0024] Acetaldehyde solution (w%>40%) 10g

[0025] The synthetic method of polytetramethylene glycol 4000-acetaldehyde-sylene triamine condensation cross-linked copolymer is as follows:

[0026] (1) Add 40g of polytetramethylene glycol 4000, 10g of acetaldehyde solution, and 5g of pyrenetriamine into 100g of water, stir slowly until completely dissolved, at a temperature of 50°C, add acetic acid dropwise to adjust the pH to 6, and react for 180min;

[0027] (2) Put the polytetramethylene glycol 4000-acetaldehyde-symylene triamine condensation cross-linked copolymer precursor mixed solution obtained in (1) in a thermostat at 100°C until the water is completely removed, and about 46g of polytetramethylene glycol can be obtained. Butylene Glycol 4000-...

Embodiment 2

[0032] Prepare the quality of each raw material component of polytetramethylene glycol 10000-acetaldehyde-phenylenediamine cross-linked copolymer as follows:

[0033] Polytetramethylene glycol 10000 40g

[0034] Phenylenediamine 5g

[0035] Acetaldehyde solution (w%>40%) 10g

[0036] The synthetic method of polytetramethylene glycol 10000-acetaldehyde-phenylenediamine condensation cross-linked copolymer is as follows:

[0037] (1) Add 40g of polytetramethylene glycol 10000, 10g of acetaldehyde solution, and 5g of phenylenediamine into 100g of water, stir slowly until completely dissolved, at a temperature of 50°C, add acetic acid dropwise to adjust the pH to 4, and react for 180min;

[0038] (2) Put the polytetramethylene glycol 10000-acetaldehyde-phenylenediamine condensation cross-linked copolymer precursor mixed solution obtained in (1) in a thermostat at 120°C until the water is completely removed, and about 46g of polytetramethylene glycol can be obtained Diol 10000-acet...

Embodiment 3

[0043] Prepare the quality of each raw material component of polytetramethylene glycol 2000-acetaldehyde-butylene diamine cross-linked copolymer as follows:

[0044] Polytetramethylene glycol 2000 50g

[0045] Butylenediamine 5g

[0046] Acetaldehyde solution (w%>40%) 10g

[0047] The synthetic method of polytetramethylene glycol 2000-acetaldehyde-butylene diamine condensation cross-linked copolymer is as follows:

[0048] (1) Add 50g of polytetramethylene glycol 2000, 10g of acetaldehyde solution, and 5g of butanediamine into 130g of water, stir slowly until completely dissolved, at a temperature of 50°C, add acetic acid dropwise to adjust the pH to 5, and react for 180 minutes;

[0049] (2) Put the polytetramethylene glycol 2000-acetaldehyde-butylene diamine condensation cross-linked copolymer precursor mixed solution obtained in (1) in a thermostat at 100°C until the water is completely removed, and about 56g of polytetramethylene glycol can be obtained Diol 2000-acetald...

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Abstract

The invention discloses a synthetic method of a phase change material polytetramethylene glycol amine aldehyde condensation crosslinking copolymer. The synthetic method comprises the following steps: by adopting a method of combining an alcohol aldehyde condensation reaction and an ammonium aldehyde condensation reaction and taking polytetramethylene glycol as a phase change function material, an amine compound and an aldehyde compound as a crosslinking agent, controlling a certain temperature and power of hydrogen in a water medium for a chemical reaction; carrying out a co-condensation reaction on an alcoholic hydroxyl group, an amino and a carbonyl group to form a novel chemical bond; and removing water to synthesize the crosslinking copolymer. During reaction, polytetramethylene glycol in different use levels is taken as the phase change function material to synthesize the crosslinking copolymer with different enthalpies of phase change and different phase change temperatures. The synthetic method is simple in process, high in yield and free from byproducts. The synthesized crosslinking copolymer inhibits free movement of a polytetramethylene glycol molecular chain and has the characteristics of indissolvableness and insolubility, so that the crosslinking copolymer becomes a solid-solid phase change material in true sense and can be widely applied to energy storage and insulation in the fields of solar energy collection, load shifting of power supply, waste heat recovery, buildings, cloth, electronic equipment and the like.

Description

technical field [0001] The invention belongs to a synthesis method of a polytetramethylene glycol amine aldehyde condensation cross-linked copolymer that can be used as an energy storage heat preservation phase change material, and particularly relates to the co-condensation reaction of aldol condensation reaction and amine aldehyde condensation reaction, and polybutylene glycol The invention discloses a method for synthesizing cross-linked copolymers in which diol is a phase-change functional material. Background technique [0002] The application of phase change materials in energy storage and heat preservation has attracted more and more people's attention and application. Organic polymer phase change materials for energy storage have the advantages of high phase change enthalpy, phase change temperature close to room temperature, abundant sources, non-toxic and pollution-free, no phase separation, and low supercooling, which can meet the actual needs of solar energy util...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G16/06C09K5/02
CPCY02P20/10
Inventor 汪树军李彦山梁文章刘红研孟凡宾高耘马焕庆郑万刚
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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