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Emulsion-based heat storage fiber and preparation method thereof

A heat storage and fiber technology, applied in the chemical characteristics of fibers, cellulose/protein conjugated rayon, wet spinning, etc., can solve the problems of cumbersome preparation process of heat storage fibers, low heat storage efficiency, etc. The effect of high heat storage density and high specific surface area

Active Publication Date: 2022-07-29
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to overcome the cumbersome preparation process of heat storage fibers and the problems of low heat storage efficiency in the prior art

Method used

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  • Emulsion-based heat storage fiber and preparation method thereof
  • Emulsion-based heat storage fiber and preparation method thereof
  • Emulsion-based heat storage fiber and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0038] An emulsion-based heat storage fiber and a preparation method thereof, specifically comprising the following steps:

[0039] (1) Dissolve 0.5g of sodium alginate in 9.5g of water, 0.4g of polyvinyl alcohol in 4.6g of water, and 0.5g of cellulose nanocrystals in 4.5g of water, and stir for 5 minutes at 1500rpm mechanical speed until completely dissolved, An aqueous phase is obtained. Under the condition of maintaining mechanical stirring, 4 g of octadecane was dropped dropwise into the above water phase, and after mixing uniformly, an oil-in-water emulsion was obtained, which was used as a spinning dope.

[0040] (2) Spinning using a wet spinning device, the size of the wet spinning syringe is 50 mL, the needle is a flat head, the diameter of the needle is 0.6 mm, the spinning speed is 500 μL / h, and the coagulation bath is a 5wt% calcium ion solution, Its temperature was 30°C. The collected primary fibers were placed in a calcium ion solution for 20 minutes, solidified...

Embodiment 2

[0042] An emulsion-based heat storage fiber and a preparation method thereof, specifically comprising the following steps:

[0043] (1) Dissolve 0.5g of sodium alginate in 9.5g of water, 0.4g of polyvinyl alcohol in 4.6g of water, and 0.5g of cellulose nanocrystals in 4.5g of water, and stir for 5 minutes at 1500rpm mechanical speed until completely dissolved, An aqueous phase is obtained. Under the condition of maintaining mechanical stirring, 6 g of octadecane was dropped dropwise into the above water phase, and after mixing uniformly, an oil-in-water emulsion was obtained, which was used as the spinning dope.

[0044] (2) Spinning using a wet spinning device, the size of the wet spinning syringe is 50 mL, the needle is a flat head, the diameter of the needle is 0.6 mm, the spinning speed is 500 μL / h, and the coagulation bath is a 5wt% calcium ion solution, Its temperature was 30°C. The collected primary fibers were placed in a calcium ion solution for 20min, solidified co...

Embodiment 3

[0046] An emulsion-based heat storage fiber and a preparation method thereof, specifically comprising the following steps:

[0047] (1) Dissolve 0.5g of sodium alginate in 9.5g of water, 0.4g of polyvinyl alcohol in 4.6g of water, and 0.5g of cellulose nanocrystals in 4.5g of water, and stir for 5 minutes at 1500rpm mechanical speed until completely dissolved, An aqueous phase is obtained. Under the condition of maintaining mechanical stirring, 8 g of octadecane was dropped dropwise into the above water phase, and after mixing uniformly, an oil-in-water emulsion was obtained, which was used as the spinning stock solution.

[0048] (2) Spinning using a wet spinning device, the size of the wet spinning syringe is 50 mL, the needle is a flat head, the diameter of the needle is 0.6 mm, the spinning speed is 500 μL / h, and the coagulation bath is a 5wt% calcium ion solution, Its temperature was 30°C. The collected primary fibers were placed in a calcium ion solution for 20min, sol...

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Abstract

The invention relates to an emulsion-based heat storage fiber and a preparation method thereof, and relates to the technical field of heat storage fibers. The preparation method comprises the following steps: firstly, adding an oil phase into a water phase, and uniformly mixing and stirring to obtain an oil-in-water emulsion; the oil phase is a phase change material; the water phase is a mixed solution of a particle stabilizer, a water-soluble polymer and water; the water-soluble polymer comprises one or more of sodium alginate, polyvinyl alcohol, acrylamide, polyethyleneimine, polyvinyl acetal, polyvinyl methyl ester, polyoxyethylene, polyacrylic acid, polymethylacrylic acid and polyethylene glycol; and extruding the oil-in-water emulsion into a coagulating bath, carrying out wet spinning, and after the reaction is completed, freezing and drying to obtain the emulsion-based heat storage fiber, a calcium ion solution is adopted in the coagulating bath. The heat storage fiber disclosed by the invention has the advantages of high heat storage density, high specific surface area, flexibility, spinnability, stretchability and the like, and has a great application prospect in the field of heat regulation textiles.

Description

technical field [0001] The invention relates to the technical field of heat storage fibers, in particular to an emulsion-based heat storage fiber and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, high-quality, multi-functional textiles have entered people's field of vision. The main purpose of textiles is to isolate people from the surrounding harsh environment, maintain the stability of the body surface microenvironment system, and adapt to the body's thermal law system. . Phase change material (PCM) is a substance capable of solid-liquid or solid-solid state transformation and latent heat storage and release within a specific temperature range due to its significant heat storage capacity accompanied by small volume changes , and the temperature change of each phase is small, and the phase transition process is completely reversible, which has attracted much attention. In recent years, through the applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/18D01F8/10D01F8/02D01F1/10D01D5/06
CPCD01F8/18D01F8/10D01F8/02D01F1/10D01D5/06Y02E60/14
Inventor 张涛赵同庆赵燕
Owner SUZHOU UNIV
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