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A polymer nanocomposite phase change energy storage material for magnetocaloric-photothermal dual drive energy conversion and storage and its preparation method

A phase change energy storage material, energy conversion technology, applied in heat exchange materials, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as liquid leakage, low density, and supercooling

Active Publication Date: 2018-12-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic phase change energy storage materials mainly include crystalline hydrated salts, molten salts, metals (including alloys), crystalline hydrated salts in inorganic phase change energy storage materials are cheap, have large latent heat of phase change, and large electrical conductivity, but there is a thermal cycle After that, the heat storage efficiency continues to decline, supercooling phenomenon and phase separation phenomenon and other problems
Organic phase change energy storage materials mainly include paraffin, fatty acid, ester and polyol, etc. There are many types of these materials and their performance is stable, but they have small conductivity, low density, poor heat storage capacity per unit volume, and leakage during phase change. liquid etc.

Method used

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  • A polymer nanocomposite phase change energy storage material for magnetocaloric-photothermal dual drive energy conversion and storage and its preparation method
  • A polymer nanocomposite phase change energy storage material for magnetocaloric-photothermal dual drive energy conversion and storage and its preparation method
  • A polymer nanocomposite phase change energy storage material for magnetocaloric-photothermal dual drive energy conversion and storage and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] 10mmol FeCl 3 , 0.3g graphene oxide, 70mL diethylene glycol, 10mL ethylene glycol ultrasonication for 4h, then add 50mmol CH 3 COONa, in a 100mL reactor at 200°C for 10h, Fe 3 o 4 / graphene (Fe 3 o 4 / GNS). attached figure 1 for Fe 3 o 4 / GNS SEM and TEM images, it can be seen that Fe 3 o 4 Nanoparticles are embedded on the graphene sheet; add 1# compound to the toluene solution containing 12# compound obtained in step (3), wherein the molar ratio of 12# compound to 1# compound is 1:1, and the temperature is raised to 80°C Reaction 6h, obtains polyurethane organic polymer phase-change energy storage material; By step (5) Fe 3 o 4 / GNS and polyurethane organic polymer phase change energy storage material are mixed at a mass ratio of 3:100 to obtain a polymer nanocomposite phase change energy storage material.

[0089] From the DSC curve of the material (attached figure 2 ) It can be seen that the polyurethane organic polymer phase change energy storage mat...

Embodiment 2-9

[0091] Use 2-9# compound instead of 1# compound in Example 1 to react with 12# compound to obtain the corresponding polymer nanocomposite phase change energy storage material, and other conditions are consistent with Example 1.

Embodiment 10

[0093] 10mmol FeCl 3 , 0.3g graphene oxide, 70mL diethylene glycol, 10mL ethylene glycol ultrasonication for 4h, then add 50mmol CH 3 COONa, in a 100mL reactor at 200°C for 10h, Fe 3 o 4 / graphene (Fe 3 o 4 / GNS); Add 1# compound to the toluene solution containing 13# compound obtained in step (3), wherein the molar ratio of 13# compound to 1# compound is 1:1, heat up to 80°C and react for 10h to obtain polyurethane Organic polymer phase change energy storage material; By step (5) Fe 3 o 4 / GNS and polyurethane organic polymer phase change energy storage material are mixed in a certain proportion to obtain polymer nanocomposite phase change energy storage material.

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Abstract

The invention discloses a magnetic thermal-photothermal double-drive energy conversion and storage polymer nano composite phase-change energy-storage material and a preparation method thereof, and belongs to the technical field of energy conversion and storage. The polymer nano composite phase-change energy-storage material takes nano magnetic based graphene as an energy converter, takes a polyurethane organic polymer as a phase-change material energy-storage device, and achieves conversion and storage of magnetic energy and optical energy. The nano magnetic based graphene is obtained by one-step reduction of a metal ion and graphene oxide through a solvothermal method, and the polyurethane organic polymer is obtained by polymerization of polyethylene glycol and an isocyanate type organic compound. Then, the nano magnetic based graphene and the polyurethane organic polymer are composited and hybridized to finally obtain the polymer nano composite shapely phase-change energy-storage material. The product has the advantages of magnetic thermal-photothermal double-drive energy conversion and storage performance, high thermal conductivity coefficient, large energy storage density and good shape fixing performance, and has wide application prospects in the field of energy conversion and storage.

Description

technical field [0001] The invention relates to a polymer nanocomposite phase change energy storage material for energy conversion and storage of magnetothermal-photothermal dual drive and a preparation method thereof, which belongs to the technical field of polymer materials. Background technique [0002] The development of industrialization has brought fossil energy to a crisis of depletion and also brought serious environmental pollution. The development of new energy and the improvement of energy efficiency have become the primary tasks of contemporary scientists. Since solar energy is the most important renewable and non-polluting energy source, capturing and converting solar energy into thermal energy has become a hot spot in the field of energy research. At the same time, the conversion of magnetic energy into thermal energy is also an important energy conversion method, which has a wide range of applications in energy systems such as magnetic refrigeration, magnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C09K5/063
Inventor 唐炳涛王文涛具本植张淑芬
Owner DALIAN UNIV OF TECH
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