Photo-thermal conversion polyurethane energy storage thin film material and preparing method and thin film thereof

A technology of light-to-heat conversion and thin-film materials, which can be used in heat exchange materials, chemical instruments and methods, etc., and can solve problems such as deformation and leakage.

Inactive Publication Date: 2018-08-31
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light-to-heat conversion polyurethane energy storage film is a polyurethane energy storage film that integrates light harvesting, light-to-heat conversion and thermal energy storage. This film is made of polyethylene glycol, oligomer polyester or polyether binary Alcohol is the soft segment, and dihydroxy dyes, diisocyanates, and small molecule diols are used as the hard segment, wherein the dyes can absorb visible light and perform photothermal conversion, and polyethylene glycol is the phase change energy storage component; Polyurethane film for thermal conversion and thermal energy storage, through covalently bonded dyes and heat storage properties of shaped phase change materials, the film has both light-to-heat conversion and thermal energy storage functions, which can effectively solve the deformation and leakage problems of organic phase change materials , and the synthesis process is relatively simple, and the application is convenient

Method used

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  • Photo-thermal conversion polyurethane energy storage thin film material and preparing method and thin film thereof
  • Photo-thermal conversion polyurethane energy storage thin film material and preparing method and thin film thereof
  • Photo-thermal conversion polyurethane energy storage thin film material and preparing method and thin film thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] Add 10g of polyethylene glycol 2000, 10g of polyester diol PBA2000 and 40mL of N,N-dimethylformamide (DMF) into a four-neck flask, blow in nitrogen, heat to 40-50°C to dissolve, then lower the temperature To 35°C, 5.5 g of 4,4'-diphenylmethane diisocyanate (MDI) dissolved in 40 mL of N,N-dimethylformamide (DMF) was added thereto, and the reaction was kept for 1 to 2 hours. Then add 0.13g of dye B dissolved in 20mL N,N-dimethylformamide (DMF) to the reaction system, where R=H in dye B (see Table 1 for the structure), raise the temperature to 65°C, and react 1~ 2h. Finally, 1.2 g of 1,4-butanediol was added to the system. After the addition, the temperature was raised to 85° C., and the reaction was continued for 2 to 3 hours to obtain a polyurethane solution. Take 10mL of the solution and put it into a 15cm×10cm×1cm polytetrahydrofuran mold, and dry it in a drying oven at 60°C to obtain the light-to-heat conversion polyurethane energy storage film.

Embodiment 2

[0067] The other contents of this embodiment are the same as in Example 1, except that the consumption of polyethylene glycol 6000 is 9.6g, the consumption of PBA2000 is 16.8g, the consumption of dye B is 0.16g, and R=H in dye B (see Table 1).

Embodiment 3

[0069] The other content of this embodiment is the same as that of Example 1, except that the consumption of polyethylene glycol 8000 is 13.6g, the consumption of PBA2000 is 16.6g, the consumption of dye B is 0.16g, and R=H in dye B (for structure see Table 1).

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Abstract

The invention relates to a photo-thermal conversion polyurethane energy storage thin film material and a preparing method and thin film thereof in the field of phase change energy storage materials. The photo-thermal conversion polyurethane energy storage thin film material is prepared from polyethylene glycol, oligomeric polyether or polyester diol, diisocyanate, small molecule diol and a double-hydroxyl dye, wherein the molecular weight of the polyethylene glycol is 2000-20000, the molecular weight of the oligomeric polyether or polyester diol is 500-3000, and the double-hydroxyl dye contains two free active hydroxyl groups and can absorb visible light with the wave length of 380-780 nm. According to the polyurethane thin film, through the heat storage characteristics of dyes and sizingphase change materials input by covalent bonds, the thin film has photo-thermal conversion and heat energy storage functions, and the problems of deformation and leakage of an organic phase change material are solved. The polyurethane thin film is high in phase change enthalpy value, stable in performance, simple in synthesis process and quite wide in application prospect, and the raw materials are easy to obtain.

Description

technical field [0001] The invention relates to the field of phase-change energy storage materials, and more specifically, to a light-to-heat conversion polyurethane energy storage thin film material, a preparation method and the thin film. Background technique [0002] At present, energy shortage is the biggest problem facing society today. The development and utilization of new energy is an important way to solve energy problems. Clean and renewable energy sources such as solar energy, water energy, and tidal energy have received extensive attention. However, these energy sources There are shortcomings such as intermittent, discontinuous, and mismatching, and it cannot provide energy continuously and stably. Therefore, a phase-change energy storage material is needed to achieve continuous energy supply. [0003] The use of thermal energy is the most extensive in all forms of energy utilization, and most of the energy use process meets human production and life through ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08J5/18C09K5/02C09K5/06
CPCC08G18/3206C08G18/3874C08G18/4018C08G18/42C08G18/4833C08G18/6607C08J5/18C08J2375/06C08J2375/08C09K5/02C09K5/063
Inventor 鲍利红曹苏毅
Owner BEIJING INST OF CLOTHING TECH
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