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Super fine composite terylene fibers storing energy through phase change, and preparation method

A phase change energy storage, polyester fiber technology, applied in fiber chemical characteristics, chemical instruments and methods, rayon manufacturing and other directions, to achieve large specific surface area, excellent mechanical properties and temperature regulation performance, good thermal stability.

Inactive Publication Date: 2007-02-21
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, the preparation of polyester microfibers with phase change heat storage function by electrospinning has not been reported yet.

Method used

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  • Super fine composite terylene fibers storing energy through phase change, and preparation method
  • Super fine composite terylene fibers storing energy through phase change, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, the polyester staple fiber and trifluoroacetic acid are mixed in a mass ratio of 1:5, and then the phase change material stearic acid is added, and the phase change material accounts for 25% of the total mass of the phase change material and the polyester. A uniform mixture is obtained after mechanical stirring Solution; Then the mixed solution is subjected to high-voltage electrostatic field spinning under the conditions of an external environment temperature of 25°C, a relative humidity of 85%, an electrostatic field spinning voltage of 15KV, and a distance between the spinneret and the collecting plate of 10cm, That is to say, the mixed solution is put into a syringe with a spinneret, and the syringe is pushed by the injection pump to make the mixed solution reach the spinneret at a constant rate of injection flow rate of 1 mL / h, and then electrospinning is performed, and the spun is collected by a collecting plate The ultra-fine fibers of the cellulose are vacuum...

Embodiment 2

[0029] First, mix the polyester staple fiber and trifluoroacetic acid at a mass ratio of 1:5, then add the phase change material butanediol distearate, and make the phase change material account for 10% of the total mass of the phase change material and the polyester, and mechanically stir Then a uniform mixed solution is obtained; then the mixed solution is subjected to high pressure under the conditions of an external environment temperature of 22°C, a relative humidity of 65%, an electrostatic field spinning voltage of 20KV, and a distance between the spinneret and the collecting plate of 15cm Electrostatic field spinning is to load the mixed solution into a syringe with a spinneret, and push the syringe through the injection pump to make the mixed solution reach the spinneret at a constant speed with an injection flow rate of 0.2mL / h, and then perform electrospinning. The spun superfine fibers are collected with a collecting plate, and then the residual trifluoroacetic acid is...

Embodiment 3

[0032] First, the polyester staple fiber and trifluoroacetic acid are mixed in a mass ratio of 1:5, and then the phase change material hexanediol distearate is added, and the phase change material accounts for 48% of the total mass of the phase change material and the polyester. Then a uniform mixed solution is obtained; then the mixed solution is subjected to high pressure under the conditions of an external environment temperature of 21°C, a relative humidity of 45%, an electrostatic field spinning voltage of 22KV, and a distance between the spinneret and the collecting plate of 13cm Electrostatic field spinning is to load the mixed solution into a syringe with a spinneret, push the syringe through the injection pump to make the mixed solution reach the spinneret at a constant speed with an injection flow rate of 15mL / h, and then perform electrospinning and use The collecting plate collects the spun ultrafine fibers, and then vacuum drying is used to remove the residual trifluor...

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Abstract

The present invention discloses a phase-transition energy storage superfine composite, polyester fibre and its preparation method. Said phase-transition energy storage superfine composite polyester fibre is made up by using polyester fibre as carrier and using stearic acid and its ester derivative as phase-transition material through a high-voltage static field spinning preparation process. The described phase-transition material is covered in the interior of said polyester fibre base body, in which the described polyester fibre content is 50-95% of total mass, and the described phase-transition material content is 5-50% of total mass. It can be used as functional material and can be extensively used in the field of various materials.

Description

Technical field [0001] The invention relates to the field of phase change materials, in particular to a phase change energy storage superfine composite polyester fiber and a preparation method thereof. Background technique [0002] Phase change material is a widely used energy storage material. With the advent of the energy crisis, the application of phase change materials will become more important. According to the different ways of phase change, the phase change materials actually used are mainly divided into solid-liquid phase change materials and solid-solid phase change materials. [0003] Phase change fiber is a solid-solid phase change material and a new type of intelligent functional material. At present, phase change fibers mainly include the following forms: (1) Phase change materials are filled or injected into hollow fibers. American scientists Vigo and Frost used aqueous solutions of hydrated inorganic salts, polyethylene glycol and polyols t...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F6/62C09K5/02
Inventor 丁恩勇李卫东
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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