Double-wall structured hollow ultrafine polymer fiber and preparation method thereof

A superfine fiber and polymer technology, which is applied in the manufacture of hollow filaments, conjugated synthetic polymer man-made filaments, and fiber processing. The effect of excellent performance, simple equipment and convenient operation

Inactive Publication Date: 2013-06-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current reports, this method mainly uses single-wall hollow microfibers prepared by binary needles or double-wall hollow microfibers prepared by three-element needles, but both have disadvantages: the single-wall structure is single, The application of fibers is limited; although the ternary needle can produce double-walled hollow fibers, the processing technology of the ternary needle is difficult, the requirements for equipment are high, the operation is complicated, and the stability is poor

Method used

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  • Double-wall structured hollow ultrafine polymer fiber and preparation method thereof
  • Double-wall structured hollow ultrafine polymer fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Preparation of polyarylene sulfide sulfone double-wall hollow microfibers:

[0039] Add 100g of polyarylene sulfide sulfone and 300g of N-methylpyrrolidone into a dissolution kettle equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 100°C, defoam and mature for 10h at a vacuum degree of 0.03MPa, and make an electrospinning shell Solution: Add 0.5g of polyvinyl alcohol and 10g of N-methylpyrrolidone into a dissolution kettle with a stirrer and a thermometer, stir and dissolve at a temperature of 100°C, defoam and age at a vacuum of 0.04MPa for 10h, and make an electrospun inner layer solution. The solution is placed on the receiving device by electrospinning, the diameter of the spinneret of the core layer is 0.3mm, the flow rate is 1ml / h; the diameter of the spinneret of the outer liquid is 0.8mm, the flow rate is 5ml / h, and the rapid Volatilized to obtain polyarylene sulfide sulfone double-walled hollow microfibers (where the s...

Embodiment 2

[0040] Example 2: Preparation of polyarylene sulfide sulfone amide double-wall hollow microfibers:

[0041]Add 200g of polyarylene sulfide sulfone amide and 500g of N-methylpyrrolidone into a dissolution kettle equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 30°C, defoam and mature at a vacuum degree of 0.03MPa for 12h, and make an electrospinning shell solution. Add 0.5g of polyethylene glycol and 10g of deionized water into a dissolution kettle equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 40°C, defoam and age at a vacuum of 0.03MPa for 10h, and prepare an electrospinning inner layer solution . The solution is sprayed onto the receiving device by electrospinning, the diameter of the spinneret of the core layer is 0.6mm, and the flow rate is 2ml / h; the diameter of the spinneret of the outer liquid is 1 mm, and the flow rate is 8ml / h, accompanied by the rapid volatilization of the solvent , Obtained polyaryl...

Embodiment 3

[0042] Example 3: Preparation of polyarylene sulfide sulfone amide double-walled hollow microfibers:

[0043] Add 300g of polyarylene sulfide sulfone amide and 1000g of N,N-dimethylacetamide into a dissolution kettle equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 50°C, defoam and mature at a vacuum of 0.05MPa for 11h, Prepare the shell electrospinning solution; add 10g of polylactic acid and 300g of chloroform into a dissolution kettle equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 50°C, defoam and mature at a vacuum degree of 0.03MPa for 10h, and make an electrospinning solution inner layer solution. The solution is sprayed onto the receiving device by electrospinning, the diameter of the spinneret of the core layer is 0.4 mm, and the flow rate is 3ml / h; the diameter of the spinneret of the outer liquid is 0.9 mm, and the flow rate is 8ml / h. , Obtained polyarylene sulfide sulfone double-wall hollow microfibe...

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Abstract

The invention discloses a double-wall structured hollow ultrafine polymer fiber and a preparation method thereof. The preparation method includes a first step of enabling 100-300 parts of polymers A and 300-1000 parts of solvent A to be added in a dissolving kettle provided with a stirrer and a thermometer, stirring and dissolving the polymers A and the solvent A under temperature of 30-100 DEG C, carrying out defoaming and curing for 10-12 hours at vacuum degree of 0.03-0.05 MPa, and obtaining polymer shell layer spinning solution, a second step of enabling 0.5-100 parts of polymers B and 10-1000 parts of solvent B to be added into the dissolving kettle provided with the stirrer and the thermometer, stirring and dissolving the polymers B and the solvent B under temperature of 30-100 DEG C, carrying out defoaming and curing for 10-12 hours at vacuum degree of 0.03-0.05 MPa, and obtaining polymer core layer spinning solution, a third step of enabling the polymer shell layer spinning solution and the polymer core layer spinning solution to pass through a core layer spinning nozzle and a shell layer spinning nozzle, wherein the inner diameter of the core layer spinning nozzle is 0.3-0.6 mm, and flow rate is 1-8 mm / h, the inner diameter of the shell layer spinning nozzle is 0.8-1.2 mm, and the flow rate is 5-10 mm / h, spinning voltage is 15-25 kilovolts, and finally manufacturing the double-wall structured hollow ultrafine polymer fiber through electrostatic spinning. The polymers A can form the outer layer of a hollow polymer fiber wall, and the polymers B can form the inner layer of the hollow polymer fiber wall.

Description

Technical field: [0001] The invention relates to a hollow ultrafine polymer fiber with a double-wall structure and a preparation method thereof, belonging to the field of preparation of hollow ultrafine polymer fiber materials. Background technique: [0002] Hollow ultrafine polymer fibers have the advantages of light weight, high porosity, and large specific surface area, and are widely used in biomedicine, drug sustained release, sound insulation materials, clothing, and high-efficiency sensors for health care. [0003] Electrospinning is currently the most common method for preparing hollow ultrafine polymer fibers. The methods used in this method mainly include: post-treatment method, single needle emulsion spinning method and coaxial electrospinning method. However, the first two processes have obvious deficiencies, which are mainly reflected in the cumbersome post-treatment process, the imperfect hollow structure of the obtained hollow ultrafine fibers, and the discont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F8/14D01F8/08D01F8/10D01D5/00D01D5/24D01D5/34
Inventor 杨杰卫志美张全超王孝军龙盛如王礼华
Owner SICHUAN UNIV
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