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A kind of polyethylene glycol-polycaprolactone phase change fiber and preparation method thereof

A polycaprolactone, polyethylene glycol technology, applied in fiber processing, chemical instruments and methods, conjugated synthetic polymer rayon, etc., can solve the limitation of polyethylene glycol application, difficult polyethylene glycol Effective coating and other issues, to achieve the effect of large latent heat of phase transition, excellent thermal and mechanical properties, and avoidance of bonding

Active Publication Date: 2021-10-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of polyethylene glycol itself, it is difficult to achieve effective coating of polyethylene glycol when polyethylene glycol and polymer materials are coaxially electrospun, which limits the application of polyethylene glycol as a phase change material.

Method used

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  • A kind of polyethylene glycol-polycaprolactone phase change fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 30%;

[0034] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone in the shell solution is 10%;

[0035] (3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spi...

Embodiment 2

[0039] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 50%;

[0040] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone is 10%;

[0041](3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spinning needle with an ou...

Embodiment 3

[0045] (1) Add polyethylene glycol (with a weight average molecular weight of 1000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=1 / 1) and magnetically stir at room temperature until completely dissolved, Ultrasound for 20 minutes to obtain polyethylene glycol spinning solution, the mass concentration of polyethylene glycol is 70%;

[0046] (2) Add polycaprolactone (weight-average molecular weight: 80,000) into a mixed solvent of N,N-dimethylformamide and dichloromethane (v / v=3 / 7) and magnetically stir at room temperature until completely dissolved, Obtain polycaprolactone spinning solution, the mass concentration of polycaprolactone is 10%;

[0047] (3) Take the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, place them in syringes respectively, and fix them on the syringe pump; use an inner diameter of 0.5mm , a coaxial spinning needle with an o...

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Abstract

The invention relates to a polyethylene glycol-polycaprolactone phase-change fiber and a preparation method thereof, belonging to the field of phase-change nanofiber materials. The fiber is a core-shell structure, polyethylene glycol is the core layer, and polycaprolactone is the shell layer, wherein the weight average molecular weight of polyethylene glycol is 1000, and the weight average molecular weight of polycaprolactone is 80000; so The mass fraction of the fiber is 100%, the mass fraction of polyethylene glycol is 21-48%, and the mass fraction of polycaprolactone is 52-79%. The method is obtained by using the polyethylene glycol spinning solution as the inner tube spinning solution and the polycaprolactone spinning solution as the outer tube spinning solution, performing coaxial electrostatic spinning, and removing the solvent. The phase change fiber presents a complete core-shell structure and has the characteristics of the two raw materials at the same time. It has excellent thermal and mechanical properties, can adjust the temperature within a certain range, is environmentally friendly and biodegradable; it can be used in medical Phase change materials and functional textile materials.

Description

technical field [0001] The invention relates to a polyethylene glycol-polycaprolactone phase-change fiber and a preparation method thereof, belonging to the field of phase-change nanofiber materials. Background technique [0002] Developing and manufacturing more efficient and cheaper thermal energy storage technology is a very important option to solve energy problems. Phase-change energy storage materials, that is, phase-change materials, are materials with heat storage and temperature adjustment functions, which are realized by utilizing the characteristics of phase-change media to release or absorb latent heat during the phase change process. The phase change fiber is to add the phase change material to the fiber carrier, in which the fiber carrier acts as a support material to provide mechanical properties, and the phase change material plays the role of thermal energy storage and release. [0003] Polyethylene glycol has shown potential as a phase change material due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/16C09K5/06D01D5/34D01D5/00
CPCC09K5/063D01D5/003D01D5/0069D01D5/0076D01D5/0092D01D5/34D01F8/14D01F8/16
Inventor 张爱英杨家乐王翔冯增国
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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