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Organic hollow superfine fibre composition and preparation and application thereof

A technology of ultra-fine fiber and composition, which is applied in the manufacture of hollow filaments, fiber chemical characteristics, rayon manufacture, etc., to achieve the effects of convenient preparation, large specific surface area and low price

Inactive Publication Date: 2006-06-28
张爱华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to invent a kind of ultra-fine hollow fiber whose inner diameter is between 15 nanometers and 20 microns and whose outer diameter is between 50 nanometers and 500 microns. Material

Method used

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  • Organic hollow superfine fibre composition and preparation and application thereof
  • Organic hollow superfine fibre composition and preparation and application thereof
  • Organic hollow superfine fibre composition and preparation and application thereof

Examples

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preparation example Construction

[0038] The preparation of the organic hollow microfiber composition is mainly carried out in five ways:

[0039] (1) Through the arc slit spinneret ( image 3 ), double ring spinneret ( Figure 4 ) and double-ring sleeve-shaped spinneret ( Figure 5 ) are directly prepared by jet stream. The jet stream can be charged or uncharged. When the jet stream is charged, its voltage range is between plus and minus 50,000 volts, and the electric field can be a DC positive electric field, a DC negative electric field, or an alternating electric field. The spray pressure applied is between 1 atmosphere and 5000 atmospheres.

[0040] (2) Form a core-shell structure 6b with different fluidization capabilities by chemical reaction on the surface of the prepared ultrafine fiber 6a, and then make the core by controlling one or more conditions in temperature, pressure, solvent, electric field, and magnetic field. The layer ultrafine fibers are fluidized to remove the core layer ultrafine fibe...

Embodiment 1

[0046] Firstly, a 10% chitosan acetic acid solution containing 1% silver-loaded zeolite with a particle size of 50 nanometers was prepared, and then the solution was electrospun through a double-ring nozzle. The outer diameter of the double ring nozzle is 0.8mm and the inner diameter is 0.5mm, and the gap width is 0.12mm. A built-in electrode in the inner and outer tubes of the double-ring nozzle is connected to the positive pole of the DC high-voltage positive power supply. The outer tube is connected to chitosan acetic acid solution, the inner tube is connected to ammonia gas, and the collector is connected to the negative electrode. The distance between the double-ring nozzle and the opposite electrode is 20 cm, a voltage of 15,000 volts is applied between the two electrodes, the flow rate of the outer ring is 1 ml / hour, and the flow rate of the inner ring is 1 ml / min. Outside the double-shaped nozzle, ammonia gas is charged with the same charge at a speed of 5 m / min to tre...

Embodiment 2

[0048] Dissolve polyethylene PET in a mixed solvent of methylene chloride and 1,2,2-trichloroethane at a weight ratio of 1:1 to make a spinning stock solution with a concentration of 10%, and then heat it at 250 degrees, Spinning is carried out through a C-shaped nozzle under the condition of 8MPa. The C-shaped nozzle has an outer diameter of 0.8 mm, an inner diameter of 0.6 mm, a slit width of 0.1 mm, and a gap width of 0.1 mm. After the spinning stock solution is sprayed out from the spinneret hole, it enters the water vapor airflow moving in the same direction at 5 m / s, and the mixed solvent is vaporized instantly to obtain PET hollow ultrafine fibers. The organic medium fiber can be used as a separation membrane for separating pure water.

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Abstract

The invention discloses organic hollow superfine fiber composite preparing and application. It adopts direct weaving or match-plate victim method to manufacture organic hollow superfine fiber with 15 nm-20 nm inside diameter and 50 nm-500 nm outside diameter. It can be applied to separating, protecting, antibacterial, catalyzing, sensing, decorating, structure support, biological consistent, conducting, repairing, and intelligence responding fields, and etc. It can greatly increase the material whole performance and reduce cost. It has the advantages of convenient manufacturing, low cost, and high quality price ratio.

Description

Technical field: [0001] The invention relates to an organic hollow microfiber composition, especially an organic hollow superfine fiber with an inner diameter ranging from 15 nanometers to 20 microns and an outer diameter ranging from 50 nanometers to 500 microns. The organic hollow superfine fiber composition can be directly obtained from a spinneret by adjusting the pressure and viscosity of the solution, and can also be obtained by sacrificing part of the superfine fiber. The organic hollow microfiber composition is applied as a functional material, which can have the functions of separation, protection, antibacterial, catalysis, sensing, decoration, structural support, biocompatibility, storage, controlled release, conductivity, repair, health care, and intelligent response one or more of them. Background technique [0002] At present, with the development of ultrafine materials, especially nanometer-sized materials, the high specific surface area of ​​ultrafine materia...

Claims

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Application Information

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IPC IPC(8): D01D5/24
Inventor 张爱华张继中
Owner 张爱华
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