Phase-change energy-storage ultra-fine composite fiber and preparation method and application thereof

A technology of ultra-fine composite fiber and phase change energy storage, which is applied in the fields of fiber treatment, fiber chemical characteristics, chemical instruments and methods, etc., and can solve the problem of not reflecting the superiority of solid-solid phase change materials and the grafting rate of phase change materials Low temperature, poor thermal conductivity and other issues, to achieve excellent temperature regulation performance, reliable production process, and low cost

Inactive Publication Date: 2007-02-07
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the polyol is heated above the solid-solid phase transition temperature, it changes from a crystalline state to a plastic crystal, and the plastic crystal has a large vapor pressure and is easy to sublimate, so it still needs to be packaged in a container when used, and it is airtight Pressure vessels, which do not reflect the superiority of solid-solid phase change materials
The patent application number is "200510035527.9", and the invention title is "a nano-c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix acetone and N,N-dimethylacetamide at a mass ratio of 2:1, add cellulose acetate (CA, number average molecular weight 29000, acetyl substitution degree 2.5) to prepare a solution with a mass fraction of 15%, and then Add polyethylene glycol-4000 (PEG-4000, mass ratio CA: PEG-4000 = 1: 1), mechanically stir evenly to form a mixed spinning solution, put it into a liquid storage tank with a spinneret and pass through Spinning by high-voltage electrospinning method to obtain ultra-fine fibers. The ambient temperature during spinning is 25°C, the relative humidity is 65%, the electrospinning voltage is 12kV, the distance between the spinneret and the collecting plate is 15cm, and the injection flow rate of the spinning solution is 0.5mL / h.

[0029] Then the obtained microfiber is immersed in the ether solution containing 25.0% of 1,6-hexamethylene diisocyanate in mass fraction, and 0.1% of dibutyltin dilaurate is added in the mass fraction, at room temperature (25°C, the ...

Embodiment 2

[0032] Mix acetone and N,N-dimethylacetamide at a mass ratio of 5:1, add cellulose acetate (CA, number average molecular weight 29000, acetyl substitution degree 2.5) to prepare a solution with a mass fraction of 20%, and then Add polyethylene glycol-10000 (PEG-10000, mass ratio CA: PEG-10000 = 9: 1), mechanically stir evenly to form a mixed spinning solution, put it into a liquid storage tank with a spinneret and pass Spinning by high-voltage electrospinning method to obtain ultra-fine fibers. The ambient temperature during spinning is 20°C, the relative humidity is 85%, the electrospinning voltage is 8kV, the distance between the spinneret and the collecting plate is 10em, and the injection flow rate of the spinning solution is 3.0mL / h.

[0033] Then immerse the obtained microfiber in a toluene solution containing adipic acid with a mass fraction of 40.0%, add dibutyltin dilaurate with a mass fraction of 0.6%, react at room temperature for 2.5h, take it out and wash it with de...

Embodiment 3

[0036] Mix acetone and N,N-dimethylacetamide at a mass ratio of 3:1, add cellulose acetate (CA, number average molecular weight 29000, acetyl substitution degree 2.5) to prepare a solution with a mass fraction of 12%, and then Add polyethylene glycol-20000 (PEG-20000, mass ratio CA: PEG-20000 = 3: 2), mechanically stir evenly to form a mixed spinning solution, put it into a liquid storage tank with a spinneret and pass Spinning by high-voltage electrospinning method to obtain ultra-fine fibers. The ambient temperature during spinning is 35°C, the relative humidity is 55%, the electrospinning voltage is 35kV, the distance between the spinneret and the collecting plate is 25em, and the injection flow rate of the spinning solution is 6.5mL / h.

[0037] Then the obtained microfibers were immersed in an acetic anhydride solution with a mass fraction of 100%, irradiated with a 250W ultraviolet lamp for 1.5h, washed 3 times with deionized water after taking it out, and dried in a vacu...

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Abstract

The invention relates to a phase-variable energy storage ultra-fine composite fiber, relative production and application, wherein said fiber can be formed by polymer carrier and phase-variable material in different quality ratio; said phase-variable material is distributed inside the fiber or on the surface of fiber; the phase-variable material on the surface of fiber is crosslinked to the polymer carrier via crosslinker, to be fixed on the surface, to obtain the phase-variable energy-storage ultra-fine composite fiber. The invention can keep the shape of fiber before and after phase change, without phase separation. And it has low cost, simple production and reliable process, to be used in biological and medical material, etc.

Description

technical field [0001] The invention relates to a phase-change energy-storage ultrafine composite fiber, in particular to a shape-fixed phase-change energy-storage ultrafine composite fiber with a polymer as a carrier, a preparation method and application thereof. Background technique [0002] Phase change materials have the characteristics of high heat storage density and approximately isothermal heat storage and release process, which can achieve the purpose of energy storage and release and adjust the mismatch between energy supply and demand. It is one of the widely used energy storage materials at present. According to the phase change process, phase change materials are generally divided into solid-solid phase change, solid-liquid phase change, solid-gas phase change and liquid-gas phase change. Because the latter two generate a large amount of gas during the phase change process, the volume change of the phase change material is large, and al...

Claims

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Application Information

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IPC IPC(8): D01F2/10D06M13/192D06M13/395A61L31/12C09K3/00
Inventor 陈长中王林格黄勇
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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