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Preparation method of helically oriented nanofiber array

A nanofiber array and nanofiber technology, which is applied in fiber processing, filament/wire forming, textiles and papermaking, etc., can solve the problems of low efficiency and complex preparation methods of nanofiber arrays, and achieve simple equipment, high-efficiency preparation, and simplified The effect of the preparation process

Active Publication Date: 2019-05-31
南京贝耳时代科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at this stage, the preparation of helically oriented nanofiber arrays is usually complicated and inefficient.

Method used

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  • Preparation method of helically oriented nanofiber array
  • Preparation method of helically oriented nanofiber array
  • Preparation method of helically oriented nanofiber array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) At room temperature, mix dimethylformamide (DMF) and tetrahydrofuran (THF) at a mass ratio of 1:1 as a solvent, and then add polyurethane (PU) particles into the solvent to make the mass fraction 20%-30% , and then stirred with an electromagnetic stirrer for 2 hours to obtain a spinning solution;

[0034] (2) Ground the two electrodes, connect the rear end of the spinning nozzle to the injection pump through a catheter, connect the conductive part of the spinning nozzle to the high-voltage DC power supply 7, and adjust the high-voltage DC power supply to about 10-12KV;

[0035] (3) Adjust the syringe pump to feed the spinning solution at a speed of 0.2-0.8ml / h. The solution is charged at the spinning nozzle and moves to the other electrode along the electric field line. At the same time, the solvent continues to volatilize in the air, causing the solute Cured to obtain charged nanofibers. When the nanofiber moves to the electrode, the electrode in contact with the ...

Embodiment 2

[0039] (1) At room temperature, mix dimethylformamide (DMF) and tetrahydrofuran (THF) at a mass ratio of 1:1 as a solvent, and then add polylactic-co-glycolic acid (PLGA) particles into the solvent to make the mass fraction 20%-30%, then stirred with an electromagnetic stirrer for 2 hours to obtain a spinning solution;

[0040](2) Ground the two electrodes, connect the rear end of the spinning nozzle to the injection pump through a catheter, connect the conductive part of the spinning nozzle to the high-voltage DC power supply 7, and adjust the high-voltage DC power supply to about 10-12KV;

[0041] (3) Adjust the syringe pump to feed the spinning solution at a speed of 0.2-0.8ml / h. The solution is charged at the spinning nozzle and moves to the other electrode along the electric field line. At the same time, the solvent continues to volatilize in the air, causing the solute Cured to obtain charged nanofibers. When the nanofiber moves to the electrode, the electrode in contac...

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Abstract

The invention discloses a preparation method of spiral type oriented nano fiber arrays. According to the preparation method, an electrostatic spinning device sprays a polymer solution, by combining with feeding of the angle of a special spin receiving device, preparation of the spiral type oriented nano fiber arrays is achieved. The preparation method is automatic and efficient; only little polymer solution is used, and the material cost is low; by adjusting the feeding quantity and feeding interval of tooth-disk-shaped receiving base materials, the orientation and density of each layer of the orientated nano fiber array can be freely controlled; through adjustment of solution parameters and operation parameters, the diameter of the nano fiber can be controlled more accurately.

Description

technical field [0001] The invention relates to the field of electrospinning, in particular to a method for preparing a specific orientation nanofiber array. Background technique [0002] In recent years, with the development of human society, people have higher and higher requirements for material performance. With the development of the international situation, how to develop ultra-thin, high-strength and high-performance protective materials to further improve the protection ability of the human body has become a severe challenge and an important topic in the military research of various countries. In recent years, the biomimetic research on crustacea stomatopods has provided an important means to develop high-strength materials. The grazing limbs of crustacea stomatopods have a spiral-oriented microstructure, which has excellent properties such as high strength and fracture resistance, and can crush hard objects such as shells. At the same time, nanofiber composite mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00
CPCD01D5/0061D01D5/0076
Inventor 陈东陈然孙泽勇孔琳琳
Owner 南京贝耳时代科技有限公司
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