Method for preparing phase-changing fiber having core-shell beaded structure

A phase-change fiber and core-shell beading technology, which is applied in fiber processing, conjugated synthetic polymer rayon, textiles, and papermaking, can solve the problems of phase-change fibers such as flammability, poor coating, and low energy storage density , to achieve the effects of increasing energy storage density, improving cladding, and reducing preparation steps

Inactive Publication Date: 2016-10-26
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a beaded phase change fiber with a core-shell microsphere structure coated with a flame-retardant phenolic resin in view of the shortcomings of the existing phase change fiber, such as flammability, poor coating, and low energy storage density. Preparation

Method used

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  • Method for preparing phase-changing fiber having core-shell beaded structure

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Experimental program
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Effect test

Embodiment 1

[0023] A preparation method of a phase-change fiber with a core-shell beaded structure, specifically comprising the following steps:

[0024] (1) Dissolve thermoplastic phenolic resin (5g) and polyethylene glycol formal (10g) in methanol (100g), stir at room temperature for 10min to form a uniform solution, and pour it into a syringe connected to the spinning scalp;

[0025] (2) Use n-tetradecane as a phase change material and pour it into a syringe connected to the core layer of the spinning head;

[0026] (3) Connect the coaxial electrospinning device, set the injection rates of the core layer phase change material and the skin layer resin solution to 0.01mL / h and 0.3mL / h respectively, and the distance between the tip of the spinning head and the substrate to be 8cm , the voltage between the two is 5KV, the experimental environment temperature is set to 20°C, and the phase change primary fiber is obtained on the rotating receiving device;

[0027] (4) In hydrochloric acid a...

Embodiment 2

[0030] A preparation method of a phase-change fiber with a core-shell beaded structure, specifically comprising the following steps:

[0031] (1) Dissolve thermoplastic phenolic resin (60g) and polyethylene glycol formal (20g) in methanol (100g), stir at room temperature for 10min to form a uniform solution, and pour it into a syringe connected to the spinning scalp;

[0032] (2) Use n-hexadecane and n-docosane mixed at a weight ratio of 1:1 as a phase change material, and pour it into a syringe connected to the core layer of the spinning head;

[0033] (3) Connect the coaxial electrospinning device, set the injection rates of the core layer phase change material and the skin layer resin solution to 2mL / h and 6mL / h, respectively, and the distance between the tip of the spinning head and the substrate to be 40cm. The voltage between them is 30KV, the experimental environment temperature is set to 30°C, and the phase change primary fibers are obtained on the rotating receiving d...

Embodiment 3

[0038] A preparation method of a phase-change fiber with a core-shell beaded structure, specifically comprising the following steps:

[0039] (1) Dissolve thermoplastic phenolic resin (20g) and polyethylene glycol formal (15g) in methanol (100g), stir at room temperature for 10min to form a uniform solution, and pour it into a syringe connected to the spinning scalp;

[0040] (2) Using Na 2 SO 4 The aqueous solution is used as a phase change material and poured into a syringe connected to the core layer of the spinning head;

[0041] (3) Connect the coaxial electrospinning device, set the injection rates of the core layer phase change material and the skin layer resin solution to 1mL / h and 2mL / h, respectively, and the distance between the tip of the spinning head and the substrate to be 20cm. The voltage between them is 20KV, the experimental environment temperature is set at 25°C, and the phase change primary fibers are obtained on the rotating receiving device;

[0042] (...

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Abstract

The invention discloses a method for preparing phase-changing fiber having a core-shell beaded structure. The method includes: dissolving phenolic resin and polymer component in an organic solvent to form a resin solution, and putting the resin solution in an injector connected to a spinning head skin layer; putting a lower temperature phase changing material in an injector connected to a spinning head core layer; acquiring phase-changing nascent fiber on a rotation or flat plate receiving device; and putting the obtained phase-changing nascent fiber in a curing solution to be cured, and washing and drying the cured phase-changing nascent fiber to obtain the phase-changing fiber having the core-shell beaded structure. The beaded phase-changing fiber having a special structure is prepared through a single-step coaxial electrostatic spinning method, and the preparation steps of the phase-changing fiber are reduced; the connected core-shell structure is obtained through the coaxial electrostatic spinning method, secondary load can be reduced, the energy density of the phase-changing fiber is improved, and the efficacy of the phase-changing fiber can be improved; and skin and core beads prepared by the electrostatic spinning method can coat the phase-changing material well, and the coating performance of the phase-changing fiber can be improved.

Description

technical field [0001] The invention belongs to the field of preparation of special fibers, and in particular relates to a preparation method of a phase change fiber with a core-shell bead structure, which is a bead with a flame-retardant polymer as a shell and a low-temperature phase-change material as a core, and is connected by inter-bead fibers. Background technique [0002] Phase change fiber is a kind of flexible intelligent temperature-regulating fiber with controllable energy obtained by using the energy storage characteristics of phase change materials. At present, it has broad application prospects in many fields such as building materials, aviation, textiles, agriculture, and medical treatment. Among them, low-temperature phase change materials have become the phase change materials that have attracted the most attention from researchers because of their good heat storage performance, wide melting temperature, high latent heat of phase change, non-toxic and non-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/34D01D5/00D01F8/16
CPCD01D5/0046D01D5/0069D01D5/0076D01D5/0092D01D5/34D01F8/16
Inventor 杨凯焦明立曹健刁泉秦琦余木火王诤任东雪宋慧娟
Owner ZHONGYUAN ENGINEERING COLLEGE
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