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Hollow superfine fiber of high-performance polymer and preparation method of hollow superfine fiber

A high-performance polymer, ultra-fine fiber technology, applied in the direction of conjugated synthetic polymer rayon, synthetic polymer rayon chemical post-treatment, fiber treatment, etc., can solve the fiber hollow structure discontinuity, spinning solution – The preparation of emulsion is cumbersome and other problems, to achieve the effect of small environmental dependence, excellent anti-solvent performance, and simple equipment

Active Publication Date: 2014-04-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of the spinning solution-emulsion is relatively cumbersome, and the hollow fiber structure obtained by this method is often discontinuous

Method used

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  • Hollow superfine fiber of high-performance polymer and preparation method of hollow superfine fiber
  • Hollow superfine fiber of high-performance polymer and preparation method of hollow superfine fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: Preparation of polyethersulfone hollow microfibers:

[0044] Add 100g of polyethersulfone, 1g of calcium chloride, and 300g of dimethyl sulfoxide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 60°C, defoam at a vacuum of 0.03MPa, and ripen for 10 hours to produce static spinning shell solution. Add 20g of polyvinyl alcohol and 200g of dimethyl sulfoxide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 90°C, defoam at a vacuum of 0.05MPa, and mature for 12h to prepare a static spinning core layer solution. A coaxial electrospinning device is adopted, wherein the inner diameter of the core spinneret is 0.6mm, the solution flow rate is 8ml / h, the inner diameter of the shell spinneret is 1.2mm, the solution flow rate is 10ml / h, and the static spinning voltage is adjusted to 15kv, Core-shell polyethersulfone microfibers were obtained by electrosp...

Embodiment 2

[0045] Embodiment 2: Preparation of polyarylene sulfide sulfone amide hollow microfiber:

[0046] Add 300 g of polyarylene sulfide sulfone amide, 15 g of sodium chloride, and 1,000 g of N-methylpyrrolidone into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 30°C, defoam at a vacuum of 0.05 MPa, and mature for 12 hours to prepare into a static spinning shell solution. Add 600g of polyethylene glycol, 600g of N-N-dimethylformamide, and 400g of N,N-dimethylacetamide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 30°C, and defoam with a vacuum of 0.03MPa , matured for 10h, and made into a static spinning core layer solution. A coaxial electrospinning device is adopted, wherein the inner diameter of the core spinneret is 0.4mm, the solution flow rate is 3ml / h, the inner diameter of the shell spinneret is 0.9mm, the solution flow rate is 5ml / h, and the static spinning vo...

Embodiment 3

[0047] Embodiment 3: Preparation of polyarylene sulfide sulfone amide hollow microfiber:

[0048] Add 200g of polyarylene sulfide sulfone amide, 15g of calcium chloride, and 900g of N,N-dimethylacetamide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 100°C, and defoam at a vacuum of 0.03MPa , matured for 11h, made of static spinning shell solution. Add 20g of chitosan and 300g of acetic acid into a dissolving device equipped with a stirrer and a thermometer, stir and swell at a temperature of 30°C until dissolved, defoam at a vacuum of 0.04MPa, and mature for 12h to prepare a static spinning core layer solution. A coaxial electrospinning device is adopted, wherein the inner diameter of the core spinneret is 0.4mm, the solution flow rate is 2ml / h, the inner diameter of the shell spinneret is 1.1mm, the solution flow rate is 9ml / h, and the static spinning voltage is adjusted to 25kv, Core-shell polyarylene sulfide sulfo...

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Abstract

The invention discloses hollow superfine fiber of a high-performance polymer and a preparation method of the hollow superfine fiber. The preparation method is characterized by comprising the steps of: adding 100-300 parts by weight of high-performance polymer A, 1-200 parts by weight of additive and 300-1000 parts by weight of solvent A to a dissolving kettle with an agitator and a thermometer, agitating and dissolving the mixture at 300-100 DEG C, and obtaining polymer shell solution by defoaming and curing; adding 0.5-600 parts by weight of polymer B and 10-1000 parts by weight of solvent B to the dissolving kettle with the agitator and the thermometer; agitating and dissolving the mixture at 30-100 DEG C, and obtaining core layer solution by defoaming and curing; putting the shell solution and core layer solution into a coaxial electrospinning device, wherein the inner diameter of a core layer spinning jet is 0.4-0.6mm; the flow rate of the solution is 1-8ml / h; the inner diameter of a shell spinning jet is 0.9-1.2mm; the flow rate of the solution is 5-10ml / h, and the electrospinning pressure is adjusted to 10-35kv. The polymer superfine fiber with a nuclear shell structure is prepared by electrospinning; the matter of a fiber core part is removed, and the hollow superfine fiber of the high-performance polymer is obtained.

Description

Technical field: [0001] The invention relates to a high-performance polymer hollow superfine fiber and a preparation method thereof, belonging to the field of preparation of polymer hollow superfine fiber materials. Background technique: [0002] High-performance polymers refer to a class of polymer materials with excellent performance and many special properties (such as high temperature resistance, radiation resistance, etc.), which can be applied under many harsh conditions. Because of its superior performance, it is widely used in high-tech, military and aerospace industries. [0003] One of the basic forms of the application of these high-performance polymers is to prepare the polymers into fibers, and a major factor affecting the performance of the fibers is the structure of the fibers; different fiber structures often endow the fibers with different properties, making their properties More excellent, more widely used. Therefore, in actual application, the production...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/16D01F8/10D01F8/14D01F8/18D01F1/10D01F11/08D01F11/06D01F11/00D01F6/94D01D5/00D01D5/34D01D1/02
Inventor 杨杰张全超卫志美王孝军龙盛如王礼华
Owner SICHUAN UNIV
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