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Energy storage material of solid - solid phase change in opal / polyurethane type, and preparation method

A phase-change energy storage material, opal technology, applied in the field of opal/polyurethane solid-solid phase-change energy storage materials and its preparation, can solve the problems of short life, volatile, unstable performance of polyols, etc., and achieve low cost , Improve the crystallization performance, the effect of low price

Inactive Publication Date: 2007-05-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also certain disadvantages. When the temperature rises, the performance of polyols is very unstable and volatile, so after many thermal cycles, the phase change system will gradually decompose and become invalid, and the service life is short

Method used

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  • Energy storage material of solid - solid phase change in opal / polyurethane type, and preparation method
  • Energy storage material of solid - solid phase change in opal / polyurethane type, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of polyethylene glycol (M=2000) / TDI prepolymer

[0027] Weigh 0.01mol of TDI and dissolve it in 10ml of acetone solvent, add it to a three-necked flask, add an appropriate amount of catalyst dropwise, stir evenly, add 0.1g of opal micropowder, 2 Add 30 ml of PEG acetone solution containing 0.005 mol molecular weight of 2000 under gas protection, stir for 10 minutes, heat to reflux, and react for 3 hours to obtain an activated sample.

[0028] (2) Preparation of polyethylene glycol (M=2000) / TDI / glycerol / opal solid-solid phase change material

[0029] Weigh 0.01mol of glycerol and dissolve it in 10ml of acetone solvent, add it to a three-necked bottle, add an appropriate amount of catalyst dropwise, stir evenly, wait until the dropwise addition is completed, 2 Heating to reflux under gas protection, and reacting for 3 hours, put the obtained product into a vacuum oven to dry the solvent to obtain a solid-solid phase transition material.

Embodiment 2

[0031] (1) Preparation of polyethylene glycol (M=5000) / TDI prepolymer

[0032] Weigh 0.01mol of TDI and dissolve it in 10ml of acetone solvent, add it to a three-necked flask, add an appropriate amount of catalyst dropwise, stir evenly, add 0.1g of opal micropowder, 2 Add 30 ml of PEG acetone solution containing 0.005 mol molecular weight 5000 under gas protection, stir for 10 minutes, heat to reflux, and react for 3 hours to obtain an activated sample.

[0033] (2) Preparation of polyethylene glycol (M=5000) / TDI / glycerol / opal solid-solid phase change material

[0034] Weigh 0.01mol of glycerol and dissolve it in 10ml of acetone solvent, add it to a three-necked bottle, add an appropriate amount of catalyst dropwise, stir evenly, wait until the dropwise addition is completed, 2 Heating to reflux under gas protection, and reacting for 3 hours, put the obtained product into a vacuum oven to dry the solvent to obtain a solid-solid phase transition material.

Embodiment 3

[0036] (1) Preparation of polyethylene glycol (M=10000) / TDI prepolymer

[0037] Weigh 0.01mol of TDI and dissolve it in 10ml of acetone solvent, add it to a three-necked flask, add an appropriate amount of catalyst dropwise, stir evenly, add 0.1g of opal micropowder, 2 Add 30ml of PEG acetone solution containing 0.005mol molecular weight 10,000 under gas protection, stir for 10 minutes, heat to reflux, and react for 3 hours to obtain an activated sample.

[0038] (2) Preparation of polyethylene glycol (M=10000) / TDI / glycerol / opal solid-solid phase change material

[0039] Weigh 0.01mol of glycerol and dissolve it in 10ml of acetone solvent, add it to a three-necked bottle, add an appropriate amount of catalyst dropwise, stir evenly, wait until the dropwise addition is completed, 2 Heating to reflux under gas protection, and reacting for 3 hours, put the obtained product into a vacuum oven to dry the solvent to obtain a solid-solid phase transition material.

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Abstract

This invention relates to a method for preparing opal / polyurethane solid-solid phase transition energy-storage material. The molecular structure of the material is shown in formula I, where, poly (ethylene glycol) is the soft segment, while aliphatic and aromatic isocyanate, and trihydroxyl substance are the hard segments. The method comprises: (1) preparing prepolymer of poly (ethylene glycol) with terminal groups activated by isocyanate groups; (2) preparing opal / polyurethane solid-solid phase transition energy-storage material. The method has such advantages as low raw material cost, no toxicity of the product, and simple process. The addition of natural nanomaterial (opal) can increase the phase transition enthalpy value and heat response rate of the material, and can reduce the cost. The opal / polyurethane solid-solid phase transition energy-storage material can effectively save energy, and has potential applications in such fields as agriculture, energy resources, textile, construction and electronics.

Description

technical field [0001] The invention belongs to a solid-solid phase change material with energy storage function and a preparation method thereof. It specifically relates to an opal / polyurethane solid-solid phase change energy storage material and a preparation method thereof. Background technique [0002] In the era when information, energy, and materials are the three pillar industries, energy storage materials have received more and more attention. Phase change energy storage and phase change materials (phase change material, PCM) are one of the hotspots in the development and research of energy utilization and material science at home and abroad in recent years. At present, the most widely used are solid-liquid phase change materials and solid-solid phase change materials. [0003] The solid-liquid phase change material will appear in a liquid state during the phase change process, so a container is required to separate the phase change ...

Claims

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Application Information

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IPC IPC(8): C09K5/02C08L75/04C08K3/34C08G18/76C08G18/48C08G18/10
Inventor 顾晓华西鹏沈新元高屹陈必成纪贤炎何卉伦
Owner DONGHUA UNIV
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