Preparation method of supermolecule gel-based composite phase change material

A technology of composite phase change materials and supramolecular gels, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor compatibility between phase change substrates and phase change core materials, and facilitate large-scale production, Solve the problem of leakage, the effect of mild conditions

Inactive Publication Date: 2015-09-09
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, based on the advantages of the above-mentioned supramolecular gel, a new type of supramolecular gel-based composite phase change material is developed, which can effectively prevent the leakage and corrosion of the phase change core material, and solve the problem of phase change substrates with the help of its special structure that is easy to control. Disadvantages of poor compatibility with phase change core materials

Method used

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  • Preparation method of supermolecule gel-based composite phase change material
  • Preparation method of supermolecule gel-based composite phase change material

Examples

Experimental program
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Effect test

Embodiment example 1

[0026] (1) Weigh 2mmol of chromium nitrate and 2mmol of trimesic acid into a 50mL beaker, add 20mL of ethanol to it, stir until completely dissolved, cover the surface of the beaker with a parafilm, and place at 80°C React in an oven for 4 hours, remove the parafilm on the beaker, and dry the beaker in a vacuum oven at 40°C for 24 hours to obtain a Cr-BTC-Gel supramolecular gel substrate.

[0027] (2) Add 0.9 g of octadecanoic acid (SA) to 50 mL of ethanol solvent, place it in an oil bath at 70°C, and stir thoroughly for 2.5 hours until the octadecanoic acid is completely dissolved. After obtaining a clear solution, add 0.1 g The Cr-BTC-Gel supramolecular gel base material prepared in the above step (1) was reacted in an oil bath at 70°C for 6h, and then transferred to an oven at 60°C for drying for 24h to obtain the SACr-BTC-Gel composite phase change material.

[0028] The prepared SACr-BTC-Gel composite phase change material was characterized by scanning electron microscop...

Embodiment example 2

[0030] (1) Weigh 2mmol of chromium nitrate and 2mmol of terephthalic acid into a 50mL beaker, add 20mL of ethanol into it, stir well until completely dissolved, cover the surface of the beaker with a sealing film, and place at 80°C React in an oven for 4 hours, remove the parafilm on the beaker, and dry the beaker in a vacuum oven at 40°C for 24 hours to obtain a Cr-BDC-Gel supramolecular gel substrate.

[0031] (2) Add 0.5g of PEG-2000 to 50mL of ethanol solvent, place it in an oil bath at 70°C, and stir thoroughly for 2.5h until PEG-2000 is completely dissolved. After obtaining a clear solution, add 0.1g of the above-mentioned step The Cr-BDC-Gel supramolecular gel substrate prepared in (1) was reacted in an oil bath at 70°C for 6h, and then transferred to an oven at 60°C for 24h to obtain a PEG-2000Cr-BDC-Gel composite phase change material.

Embodiment example 3

[0033] (1) Weigh 1.2mmol of ferric nitrate and 2mmol of 5-aminoisophthalic acid in a 50mL beaker, add 12mL of ethanol and 8mL of N,N-dimethylformamide (DMF), and stir thoroughly After completely dissolving, cover the surface of the beaker with a parafilm, place it in an oven at 90°C for 12 hours, remove the parafilm on the beaker, and dry the beaker in a vacuum oven at 40°C for 24 hours to obtain Fe - ADC-Gel supramolecular gel substrate.

[0034] (2) Add 0.045g of stearic acid into 40mL of ethanol solvent, place it in an oil bath at 80°C, stir fully for 4h until the stearic acid is completely dissolved, and after obtaining a clear solution, add 0.1g of the above step ( The Fe-ADC-Gel supramolecular gel substrate prepared in 1) was reacted in an oil bath at 80°C for 6h, and then transferred to an oven at 60°C for drying for 24h to obtain a stearic acid Fe-ADC-Gel composite phase change material.

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Abstract

The invention discloses a preparation method of a supermolecule gel-based composite phase change material and belongs to the fields of composite materials and composite phase change materials. The preparation method comprises the following steps: preparing a supermolecule gel substrate with a three-dimensional network structure, and regulating the ratio of added raw materials and the three-dimensional network structure of the substrate, so as to well match different types of phase change core materials; dissolving the phase change core materials into water/alcohol to prepare a solution, dispersing the prepared supermolecule gel substrate into the water/alcohol solution of the phase change materials, and drying, so as to obtain the supermolecule gel-based composite phase change material with the shaping superiority. According to the supermolecule gel-based composite phase change material prepared by virtue of the preparation method, the phase change core materials can be effectively immobilized by virtue of a specific network mutual transmission structure of the supermolecule gel substrate, and the leakage problem of the phase change core materials is solved; the developed composite phase change material has relatively good compatibility with the phase change core materials and can be adaptable to different types of the phase change core materials. The preparation method is simple, convenient, feasible, beneficial to large-scale production and wide in application prospect, the process is simple, and conditions are mild.

Description

technical field [0001] The invention belongs to the field of composite phase-change materials, and in particular relates to a preparation method of supramolecular gel-based composite phase-change materials. Background technique [0002] In the context of increasingly scarce energy supply and worsening global climate deterioration, the replacement of traditional energy by new and renewable energy represented by wind energy, solar energy, geothermal energy, and ocean energy has become the only way for sustainable development. However, the distribution of the above-mentioned energy has the characteristics of intermittency, randomness, and volatility. In its energy utilization system, there are mismatches and uneven contradictions between energy supply and demand in terms of time, space, or intensity, resulting in unreasonable and uneven energy utilization. A lot of waste. Energy storage methods mainly include sensible heat, latent heat and chemical reaction heat. Latent heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C08L29/04
Inventor 王戈齐悦栾奕安迪杨明侯俊英范爽彭雄
Owner UNIV OF SCI & TECH BEIJING
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