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Solid-solid phase-change energy-storage material and preparation method thereof

A phase change energy storage material and compound technology, applied in the field of intelligent polymer materials, can solve the problems of affecting heat storage effect, difficult recovery, long heat transfer time, etc., and achieve high overall phase change enthalpy and good thermal stability , the effect of high phase change enthalpy

Inactive Publication Date: 2007-09-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affect the heat storage effect, the constant temperature time of the material is short
At the same time, due to the large distance between each grafted phase change material, the distance between the materials forming the phase change monomer is relatively long, and the connection points between the phase change materials are relatively small, resulting in a relatively long time for heat transfer
Moreover, its preparation process is complicated, and the solvent system used is expensive and difficult to recycle, resulting in a relatively high cost of the material.

Method used

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  • Solid-solid phase-change energy-storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] 1. Preparation of benzaldehyde glycerol acetal-TDI prepolymer

[0050] Use 1 mole of benzaldehyde glyceryl acetal and 3 moles of 2,4 toluene diisocyanate (TDI) in 50 milliliters of acetone solvent, under the protection of nitrogen, the temperature is 45 ° C, and the reaction time is 2 hours to generate benzaldehyde glyceryl acetal- Prepolymer of TDI.

[0051] 2. Preparation of benzaldehyde glycerol acetal-TDI-mPEG trimer

[0052] Use 1 mole of benzaldehyde glyceryl acetal-TDI and 1 mole of polyethylene glycol monomethyl ether (mPEG) with a molecular weight of 2,000 in 50 ml of acetone solvent, under the protection of nitrogen, the temperature is 40 ° C, the reaction time is 5 hours, and dry After that, benzaldehyde glycerol acetal-TDI-mPEG trimer is obtained.

[0053] 3. Hydrolysis of benzaldehyde glycerol acetal-TDI-mPEG trimer

[0054] Put the above 1 mole of benzaldehyde glycerol acetal-TDI-mPEG trimer into a round-bottomed flask in a hydrochloric acid solution wi...

Embodiment 2

[0058] 1. Preparation of Glycerol Methylal-IPDI Prepolymer

[0059] Use 1 mole of glycerol formal and 3 moles of isophorone diisocyanate (IPDI) in 50 ml of acetone solvent, under the protection of nitrogen, the temperature is 45 ° C, and the reaction time is 2 hours to generate glycerol formal-IPDI prepolymer.

[0060] 2. Preparation of Glycerol Methylal-IPDI-mPEG Trimer

[0061] Use 1 mole of glycerol formal-IPDI and 1 mole of polyethylene glycol monomethyl ether (mPEG) with a molecular weight of 5,000 in 60 ml of acetone solvent, under the protection of nitrogen, the temperature is 50 ° C, the reaction time is 5 hours, after drying That is, glycerol formal-IPDI-mPEG trimer was obtained.

[0062] 3. Hydrolysis of Glycerol Methylal-IPDI-mPEG Trimer

[0063] Put the above 1 mole of glycerol formal-IPDI-mPEG trimer into a round-bottomed flask in a hydrochloric acid solution with pH=4 at room temperature, stir for 3 hours for hydrolysis, and dry to obtain solid powder Glycero...

Embodiment 3

[0067] 1. Preparation of benzaldehyde glycerol acetal-MDI prepolymer

[0068] Use 1 mole of benzaldehyde glyceryl acetal and 3 moles of 4,4-diphenylmethane diisocyanate (MDI) in 50 ml of acetone solvent, under the protection of nitrogen, the temperature is 45 ° C, react for 2 hours to generate benzaldehyde glyceryl Aldehyde-MDI prepolymer.

[0069] 2. Preparation of benzaldehyde glycerol acetal-MDI-mPEG trimer

[0070] Use 1 mole of benzaldehyde glyceryl acetal-MDI and 1 mole of polyethylene glycol monomethyl ether (mPEG) with a molecular weight of 2,000 in 50 ml of acetone solvent, under the protection of nitrogen, the temperature is 45 ° C, the reaction time is 3.5 hours, and dry Afterwards, benzaldehyde glycerol acetal-MDI-mPEG trimer is obtained.

[0071] 3. Hydrolysis of benzaldehyde glycerol acetal-MDI-mPEG trimer

[0072] Put the above 1 mole of benzaldehyde glycerol acetal-MDI-mPEG trimer into a round-bottomed flask in a hydrochloric acid solution with pH=4 at room ...

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Abstract

The invention relates to a solid-solid phase-change energy-storage material in macromolecule material field and preparing method thereof. The preparing method of the phase-change energy-storage material includes steps: forming branched chain macromolecule monomer of the material by small molecule of N, M and R; synthesizing structural unit of polymer with main side chain structure from the branched chain macromolecule monomer and small molecular of R', M, N and E by method of graft copolymerization; forming the three-dimensional high-density comb shaped solid-solid phase-change energy-storage material from 1-59 structural unit(s); wherein N is trihydroxy compound, M is diisocyanate compound, R is polyethylene glycol compound, R' is low polymer of glycol compound, and E is aromatic diamines compound. Advantages of the prepared solid-solid phase-change energy-storage material are: controlled high phase-change enthalpy value, fitting temperature for phase-change, good heat stability, non-flowing quality, good machine-shaping property, simple preparing process, reusable solvent, and low cost.

Description

technical field [0001] The invention relates to a solid-solid phase change energy storage material and a preparation method thereof in the field of intelligent polymer materials. In particular, it relates to a solid-solid phase change energy storage material with a high-density comb graft copolymer structure and a preparation method thereof. As an intelligent material for energy storage and temperature control, the solid-solid phase change energy storage material is mainly used in fields such as agriculture, energy, textiles, construction, electronics, aerospace, and outer space. technical background [0002] With the rapid development of contemporary high-tech industry and information industry, the human demand for energy is increasing, and energy storage materials are also receiving more and more attention. Phase change material (PCM) has become one of the hotspots in the development and research of energy utilization and material science at home and abroad in recent year...

Claims

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Application Information

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IPC IPC(8): C09K5/02
Inventor 顾晓华西鹏刘朝晖沈新元高屹
Owner DONGHUA UNIV
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